Your Personal Catalog Temperature Controllers All our know-how - is now yours

MAKING MODERN LIVING POSSIBLE Your Personal Catalog Temperature Controllers All our know-how - is now yours

Index 3 RAVI 12 RAVK 20 RAVV 28 AFT 06/26/17/27 33 AVTB 41 AVTQ DN15 49 AVTQ DN20 57 FJV 61 STFW/VFG(S) 2 - STFW/AFT/VFG(S) 2 69 XB06 & IHPT 81 AVT / VG(F) 93 AVT / VGS 105 AVT / VGU 113 STM / VGS / AVT - STLS 125 STM /VG(F) / AVT - STLV

Actuators - Temperature RAVI RAVK RAVV

Data sheet Thermostatic actuator RAVI - for 2-way valves RAV-/8 (PN 10), VMT-/8 (PN 10), VMA (PN 16) - for 3-way valves KOVM (PN 10), VMV (PN 16) Description RAVI is self-acting thermostatic actuator primarily for use for temperature control of small hot water cylinders - either storage type cylinders or instantaneous hot water heaters. RAVI can be combined with: - 2-way valves RAV-/8, VMT-/8 and VMA, or - 3-way valves VMV and KOVM. Controller closes on rising temperature. Main data: DN 10-25 k v 0.25-4.0 m 3 /h PN 10 Setting range: 43 65 C Temperature: - Circ. water / glycolic water up to 30%: 2 90 C with KOVM valves 2 120 C with RAV-/8, VMT-/8 and VMV valves 2 130 C with VMA valves Connections: - Internal and external thread Return mounting Ordering Example: Temperature controller, DN 15, k v 1.6, PN 10, setting range 43 65 C, t max 130 C, 2-way valve with ext. thread - 1x RAVI thermostatic actuator, 43 65 C Code No: 013U8008 RAVI thermostatic actuator Picture Setting range Capillary tube length Max. sensor temp. Code No. 1) DIN-tested. Registration number TR 37779 2) Incl. R p ½ sensor stuffing box 43 65 C 2.0 m 70 C 013U8008 1), 2) - 1x VMA DN 15 valve Code No: 065F2034 Option: - 1x Imm. pocket, brass Code No: 013U0290-1x Weld-on tailpieces Code No: 003H6908 DH-SMT/SI VD.52.Q5.02 Danfoss 11/2006 1

Data sheet Thermostatic actuator RAVI Ordering (continuous) Valves Picture Type Version RAV 10/8 DN (mm) 10 1.2 k 1) v Connection PN (m 3 /h) inlet outlet Code No. R p 3 8 R 3 8 013U0012 RAV 15/8 15 1.3 R p ½ R ½ 013U0017 RAV 20/8 20 2.4 R p ¾ R ¾ 013U0022 RAV 25/8 25 2.6 10 R p 1 R 1 013U0027 VMT 15/8 2) 15 1.3 R p ¾ 065F0115 VMT 20/8 2) 20 2.4 R p 1 065F0120 VMT 25/8 2) 2-way 25 2.6 R p 1 ¼ 065F0125 VMA 15 3) 15 VMV 15 3-way KOVM 15 15 0.25 065F2030 0.4 065F2031 0.63 065F2032 G ¾ A 1.0 065F2033 16 1.4 065F2034 2.2 065F2035 15 2.3 Rp ½ Rp ½ 065F0015 VMV 20 20 3.5 Rp ¾ Rp ¾ 065F0020 1) The capacity (k v ) applies with a P-band of 6 C. For other P-bands, see Technical data. 2) For ordering of Cu fittings, see Accessories. 3) For ordering ext. thread taipieces, see Accessories. 0.6 Rp ½ Rp ½ 013U3014 1.5 10 Rp ½ Rp ½ 013U3015 2.0 Rp ½ Rp ½ 013U3020 Accessories for thermostat Picture Type designations Connection Code No. Immersion pocket Housing of sensor stuffing box 1) Code includes housing and gasket of sensor stuffing box Accessories for valves R p ½ M14 x 1 mm, brass 182 mm, without sens. stuff. box R p ½ M18 x 1.5 mm, st. steel 182 mm, with sens. stuff. box 013U0290 003N0196 R ½ x M14 x 1 mm, rubber EPDM Ø 12.6 x 4 x 6 mm 013U8102 1) Picture Type designations For valve Dimensions Code No. Compression fittings 1), 2), 5) Weld-on tailpieces External thread tailpieces VMT 15 VMT 20 Ø 15 1 Ø 16 1 Ø 18 1 Ø 18 1 Ø 22 1 013G4125 013G4126 013G4128 013U0134 013U0135 VMT 25 Ø 28 1 013U0140 VMA 15 Compression fittings 3), 4), 5) KOVM 15 (G ½ A) Con. ext. thread acc. to EN 10226-1 - 003H6908 Ø 12 1 Ø 14 1 Ø 15 1 Ø 16 1 R ½ 003H6902 013G4112 013G4114 013G4115 013G4116 Valve stuffing box 5) RAV/VMT/VMA/VMV/KOVM 065F0006 1) Compression fitting consist of compression ring and union 2) For copper pipe 3) Compression fitting consist of compression ring and nut 4) For steel and copper pipe 5) The products can only be ordered in multiple packing containing 10 pieces each 2 VD.52.Q5.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Thermostatic actuator RAVI Technical data Type RAVI k v (m 3 /h) with a P-band in C of 2 4 6 RAV 10/8 0.70 1.00 1.20 RAV/VMT 15/8 0.70 1.10 1.30 RAV/VMT 20/8 1.00 1.80 2.40 RAV/VMT 25/8 1.20 2.00 2.60 VMA 15 (k vs = 0.25) 0.23 0.24 0.25 Max. pressure PN p 1) (bar) VMA 15 (k vs = 0.4) 0.35 0.38 0.40 5 VMA 15 (k vs = (0.6) 0.53 0.63 0.63 2 16 VMA 15 (k vs = 1.0) 0.60 0.85 1.00 2 VMA 15 (k vs = 1.6) 0.64 1.20 1.40 2 VMA 15 (k vs = 2.5) 1.00 1.55 2.20 1 (bar) VMV 15 (k vs = 2.5) 0.70 1.50 2.30 0.6 16 VMV 20 (k vs = 4.0) 0.90 2.10 3.50 0.5 KOVM 15 (k vs = 0.63) 0.30 0.50 0.60 KOVM 15 (k vs = 1.5) 0.70 1.20 1.50 KOVM 15 (k vs = 2.0) 0.90 1.60 2.00 Test pressure (bar) Max. flow temp. ( C) 10 0.8 16 120 5 25 130 25 120 10 0.8 16 90 Materials RAV/VMT VMA VMV KOVM Valve body Brass DZR Rg 5 Brass Valve cone NBR rubber EPDM EPDM EPDM Spindle - DZR St. steel St. steel 18/8 Temperature sensor Immersion pocket Capillary tube Cu Brass or stainless steel Cu 1) In installations where quiet function is required, the differential pressure across the valve should not exceed 1 bar. Max. adm. temp. at sensor ( C) 70 Application principles The actuator RAVI must be installed in the return pipeline only. Storage cylinder Instantaneous hot water heat exchanger Installation positions Temperature controller The valve body must be installed in the return pipeline with flow in the direction indicated by the cast-in arrow. Temperature sensor The sensor must always be placed warmer than the bellows. The sensor must be installed with its tip pointing upwards. DH-SMT/SI VD.52.Q5.02 Danfoss 11/2006 3

Data sheet Thermostatic actuator RAVI Sizing Example: Temperature control of service hot water Given data: Tank output: 10 kw (8600 kcal/h) Cooling (flow return): 20 C Flow: Differential pressure Δp across valve: 8.6 0.43m 3 20 0.12 bar h Method: Use the water quantity (0.43 m 3 /h) and differential pressure (0.12 bar) to read off the necessary k v -value = 1.25 In this case, sizing is for a P-band of 6 C. In the table of k v -values, look under 6 C and find the valve body having the necessary k v -value. In this case the valve body most suitable is the RAV 15/8 or VMT 15/8 with a k v -value of 1.3. Required: Correct valve size 4 VD.52.Q5.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Thermostatic actuator RAVI Design 1. Handle for temperature setting 2. Setting spring 3. Bellows 4. Valve stuffing box 5. Bottom screw 6. Valve body 7. Valve cone 8. Temperature sensor 9. Sensor stuffing box 10. Housing of sensor stuffing box 11. Gasket of sensor stuffing box 12. Sealing bolt of sensor stuffing box 11 10 12 9 Settings Temperature setting Relation between scale numbers 1-5 and closing temperature. The values given are approximate. DH-SMT/SI VD.52.Q5.02 Danfoss 11/2006 5

Data sheet Thermostatic actuator RAVI Dimensions RAVI-RAV-/8 Type D d L1 (mm) L2 (mm) H1 (mm) Width across flats S1 (mm) S2 (mm) RAVI-RAV 10/8 R p 3 8 R 3 8 59 85 103 22 27 RAVI-RAV 15/8 R p ½ R ½ 66 95 103 27 30 RAVI-RAV 20/8 R p ¾ R ¾ 74 106 103 32 37 RAVI-RAV 25/8 R p 1 R 1 90 125 116 41 46 RAVI-VMT-/8 Type a b L1 (mm) L2 (mm) H1 (mm) S (mm) RAVI-VMT 15/8 Ø 15/ Ø 16/ Ø 18 R ¾ 66 90 103 30 RAVI-VMT 20/8 Ø 18/ Ø 22 R 1 74 101 103 37 RAVI-VMT 25/8 Ø 28 R 1 ¼ 90 120 116 45 RAVI-VMV Type L1 (mm) H1 (mm) H2 (mm) VMV 15 70 35 100 R p ½ VMV 20 80 40 100 R p ¾ D 6 VD.52.Q5.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Thermostatic actuator RAVI Dimensions (continuous) RAVI-VMA KOVM Immersion pockets Weld-on tailpieces External thread tailpieces G Ød L Weight (mm) (mm) (mm) (kg) 15 15 35 0.18 G R L Weight ( ) ( ) (mm) (kg) ¾ ½ 25.5 0.17 DH-SMT/SI VD.52.Q5.02 Danfoss 11/2006 7

Data sheet Thermostatic actuator RAVI 8 VD.52.Q5.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Thermostatic actuator RAVK - for 2-way valves RAV-/8 (PN 10), VMT-/8 (PN 10), VMA (PN 16) - for 3-way valves KOVM (PN 10), VMV (PN 16) Description RAVK can be combined with: - 2-way valves RAV-/8, VMT-/8, VMA, or - 3-way valves VMV and KOVM Controller closes on rising temperature. RAVK 25-65 ºC can be combined with RAV-/8, VMT-/8, VMA and KOVM valves. RAVK 25-45 o C can be combined with VMV DN 15 and DN 20 valves. This combination is used for temperature control in a mixing loop for hot water service. RAVK is self-acting thermostatic actuator primarily for use for temperature control of small hot water cylinders (e.g. storage tanks) or heat exchangers in radiator heating systems. Main data: DN 10-25 k v 0.25-4.0 m 3 /h PN 10 with RAV-/8, VMT-/8 and KOVM valves PN 16 with VMA and VMV valves Setting ranges: 25 45 C with VMV valves 25 65 C with RAV-/8, VMT-/8, VMA, KOVM valves Temperature: - Circ. water / glycolic water up to 30%: 2 90 C with KOVM valves 2 120 C with RAV-/8, VMT-/8 and VMV valves 2 130 C with VMA valves Connections: - Internal and external thread Flow and return mounting Ordering Example: Temperature controller, DN 15, k v 1.6, PN 16, setting range 25 65 C, t max 130 C, 2-way valve with ext. thread - 1x RAVK thermostatic actuator, 25 65 C Code No: 013U8063-1x VMA DN 15 valve Code No: 065F2034 RAVK thermostatic actuator Picture Setting range Capillary length Max. sensor temperature ( C) (m) ( C) 1) To be combined with RAV-/8, VMT-/8, VMA and KOVM 2) To be combined with VMV DN15 and DN20 3) Incl. Rp ½ sensor stuffing box Code No. 3) 25 65 013U8063 2.0 120 1) 25 45 013U8072 2) Option: - 1x Imm. pocket, brass Code No: 017-4370 - 1x Weld-on tailpieces Code No: 003H6908 DH-SMT/SI VD.52.B2.02 Danfoss 11/2006 1

Data sheet Thermostatic actuator RAVK Ordering (continuous) Valves Picture Type Version RAV 10/8 DN (mm) 10 1.2 k 1) v Connection PN (m 3 /h) inlet outlet Code No. R p 3 8 R 3 8 013U0012 RAV 15/8 15 1.5 R p 1 2 R 1 2 013U0017 RAV 20/8 20 2.3 R p 3 4 R 3 4 013U0022 RAV 25/8 25 3.1 10 R p 1 R 1 013U0027 VMT 15/8 2) 15 1.5 G 3 4 A 065F0115 VMT 20/8 2) 20 2.3 G 1 A 065F0120 VMT 25/8 2) 2-way 25 3.1 G 1 1 4 A 065F0125 VMA 15 3) 15 VMV 15 3-way 0.25 065F2030 0.4 065F2031 0.63 065F2032 G ¾ A 1.0 065F2033 16 1.6 065F2034 2.5 065F2035 15 2.5 R p 1 2 R p 1 2 065F0015 VMV 20 20 4.0 R p 3 4 R p 3 4 065F0020 KOVM 15 15 1) Capacity (k v ) is max. value 2) For ordering of Cu fittings, see Accessories. 3) For ordering ext. thread taipieces, see Accessories. 0.63 R p 1 2 R p 1 2 013U3014 1.5 10 R p 1 2 R p 1 2 013U3015 2.0 R p 1 2 R p 1 2 013U3020 Accessories for thermostat Picture Type designations Connection Code No. Immersion pocket R p ½ M14 1mm, brass, Ø 11 112 mm 017-4370 R p ½ M18 1.5mm, stainlees steel, Ø 11 112 mm 017-4369 Housing of sensor stuff. box R ½ x M14 x 1 mm, rubber EPDM Ø 12.6 x 4 x 6 mm 013U8102 1) 1) Code includes housing and gasket of sensor stuffing box Accessories for valves Picture Type designations For valve Dimensions Code No. Compression fittings 1), 2), 5) Weld-on tailpieces External thread tailpieces VMT 15 VMT 20 Ø 15 1 Ø 16 1 Ø 18 1 Ø 18 1 Ø 22 1 013G4125 013G4126 013G4128 013U0134 013U0135 VMT 25 Ø 28 1 013U0140 VMA 15 Compression fittings 3), 4), 5) KOVM 15 (G ½ A) Con. ext. thread acc. to EN 10226-1 - 003H6908 Ø 12 1 Ø 14 1 Ø 15 1 Ø 16 1 R ½ 003H6902 013G4112 013G4114 013G4115 013G4116 Valve stuffing box 5) RAV/VMT/VMA/VMV/KOVM 065F0006 1) Compression fitting consist of compression ring and union 2) For copper pipe 3) Compression fitting consist of compression ring and nut 4) For steel and copper pipe 5) The products can only be ordered in multiple packing containing 10 pieces each 2 VD.52.B2.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Thermostatic actuator RAVK Technical data Type RAVK k v (m 3 /h) at a P-band C of Max. pressure PN Δp 2 4 6 8 10 (bar) (bar) RAV/VMT 10/8 0.35 0.65 0.85 1.0 1.1 RAV/VMT 15/8 0.5 0.75 0.95 1.1 1.2 RAV/VMT 20/8 0.55 1.1 1.6 2 2.2 RAV/VMT 25/8 0.6 1.2 1.8 2.2 2.3 VMA 15 (k vs =0.25) 0.1 0.2 0.2 0.2 0.2 VMA 15 (k vs =0.4) 0.1 0.3 0.3 0.3 0.3 3.0 VMA 15 (k vs =0.63) 0.2 0.5 0.6 0.6 0.6 1.5 16 VMA 15 (k vs =1.0) 0.2 0.5 0.7 0.7 0.7 1.5 VMA 15 (k vs =1.6) 0.2 0.6 0.8 0.8 0.8 1.5 VMA 15 (k vs =2.5) 0.4 0.9 1.3 1.3 1.3 0.5 VMV 15 (k vs =2.5) 0.45 0.9 1.3 1.75 2.2 VMV 20 (k vs =4.0) 0.7 1.4 2.1 2.8 3.6 KOVM 15 (k vs =0.63) 0.3 0.4 0.5 0.6 0.6 KOVM 15 (k vs =1.5) 0.7 0.9 1.2 1.3 1.5 KOVM 15 (k vs =2.0) 0.9 1.3 1.6 1.8 2.0 Test pressure (bar) Max. flow temp. ( C) 10 0.8 16 120 3.0 25 130 16 0.2 25 120 10 0.8 16 90 Materials RAV/VMT VMA VMV KOVM Valve body Brass DZR Rg 5 Brass Valve cone NBR rubber EPDM EPDM EPDM Spindle DZR St. steel St. steel 18/8 Temp. sensor Immersion pocket Capillary tube Cu Brass or stainless steel Cu Max. sensor temp. ( C) 120 Application principles RAVK RAVK Hot water cylinder Heat exchanger in radiator heating system Installation positions Temperature controller The valve body could be installed in the flow or return pipeline with flow in the direction indicated by the cast-in arrow. Temperature sensor The sensor could be installed in any position. DH-SMT/SI VD.52.B2.02 Danfoss 11/2006 3

Data sheet Thermostatic actuator RAVK Sizing Example: Temperature control of service hot water Given data: Tank output: 14 kw (12.000 kcal/h) Cooling (flow return): 20 C Flow: Differential pressure Δp across valve: 12 0.6m 3 h 20 0.12 bar Solution: From water volume (0.6 m 3 /h) and differential pressure (0.12 bar), read off the necessary k v value in diagram = 1.75. In this example, a P-band of 6 C is required. From the kv columns in the table, under 6 C, find the appropriate valve body. Here, the most suitable valve body is RAV 25/8 or VMT 25/8 with a k v value of 1.8. Required: Correct valve size 4 VD.52.B2.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Thermostatic actuator RAVK Design 1. Handle for temperature setting 2. Setting spring 3. Bellows 4. Valve stuffing box 5. Bottom screw 6. Valve body 7. Valve cone 8. Temperature sensor 9. Sensor stuffing box 10. Housing of sensor stuffing box 11. Gasket of sensor stuffing box 12. Sealing bolt of sensor stuffing box 11 10 12 9 Settings Temperature setting Relation between scale numbers 1-5 and closing temperature. The values given are approximate. RAVK 25 65 C with RAV, VMT, VMA and KOVM valves min. 1 2 3 4 5 max. (25 65 C) 25 35 45 55 65 C RAVK 25 45 C with VMV valve min. 1 2 3 4 5 max. (25 45 C) 25 30 35 40 45 C DH-SMT/SI VD.52.B2.02 Danfoss 11/2006 5

Data sheet Thermostatic actuator RAVK Dimensions RAVK-RAV-/8 Type D d (mm) L1 (mm) L2 (mm) H1 (mm) Width across flats S1 S2 RAVK-RAV 10/8 R p 3 8 R 3 8 59 85 103 22 27 RAVK-RAV 15/8 R p ½ R ½ 66 95 103 27 30 RAVK-RAV 20/8 R p ¾ R ¾ 74 106 103 32 37 RAVK-RAV 25/8 R p 1 R 1 90 125 116 41 46 RAVK-VMT-/8 Type a b L1 (mm) L2 (mm) H1 (mm) S RAVK-VMT 15/8 Ø 15/Ø 16/Ø 18 R ¾ 66 90 103 30 RAVK-VMT 20/8 Ø 18/Ø 22 R 1 74 101 103 37 RAVK-VMT 25/8 Ø 28 R 1 ¼ 90 120 116 45 RAVK-VMV Type L1 (mm) H1 (mm) H2 (mm) D VMV 15 70 35 100 R p ½ VMV 20 80 40 100 R p ¾ 6 VD.52.B2.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Thermostatic actuator RAVK Dimensions (continuous) RAVK-VMA KOVM M 14 1 M 18 1.5 Immersion pocket Weld-on tailpieces External thread tailpieces G Ød L Weight (mm) (mm) (mm) (kg) 15 15 35 0.18 G R L Weight ( ) ( ) (mm) (kg) ¾ ½ 25.5 0.17 DH-SMT/SI VD.52.B2.02 Danfoss 11/2006 7

Data sheet Thermostatic actuator RAVK 8 VD.52.B2.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Thermostatic actuator RAVV - for 2-way valves RAV-/8 (PN 10), VMT-/8 (PN 10), VMA (PN 16) Description RAVV can be combined with 2-way valves RAV- /8, VMT-/8 or VMA 15. Controller closes on rising temperature. There is a special version with a section of the capillary tube coiled up to function as minimum temperature sensor. This version can be used to control air heating coils. RAVV is self-acting thermostatic actuator primarily for use for temperature control in small hot water cylinders and to control flow temperatures in central heating systems. Main data: DN 10-25 k v 0.4-1.6 m 3 /h PN 10 with RAV-/8 and VMT-/8 valves PN 16 with VMA valves Setting ranges: 10 38 C / 27 57 C / 40 70 C Temperature: - Circ. water / glycolic water up to 30%: 2 120 C with RAV-/8 and VMT-/8 valves 2 130 C with VMA valves Connections: - Internal and external thread Flow mounting Ordering Example: Temperature controller, DN 15, k v 1.6, PN 16, setting range 27 57 C, t max 130 C, 2-way valve with ext. thread - 1x RAVV thermostatic actuator, 27-57 C Code No: 013U1252-1x VMA DN 15 valve Code No: 065F2034 Option: - 1x Imm. pocket, brass Code No: 017-4370 - 1x Weld-on tailpieces Code No: 003H6908 RAVV thermostatic actuator Picture Setting range Capillary tube lenght Max. sensor temperature Code No. ( C) (m) ( C) 1) 10 38 1-5 013U1255 10 38 5.0 2) 013U1253 120 27 57 1-5 013U1252 1) Incl. R p ½ sensor stuffing box 2) Effektive lenght including minimum temperature sensor Valves Picture Type 40 70 1-5 013U1251 DN (mm) k v 1) (m 3 /h) RAV 10/8 10 1.1 PN inlet Connection outlet Code No. R p 3 8 3) R 3 8 3) 013U0012 RAV 15/8 15 1.2 R p 1 2 3) R 1 2 3) 013U0017 RAV 20/8 20 1.5 R p 3 4 3) R 3 4 3) 013U0022 RAV 25/8 25 1.6 10 R p 1 3) R 1 3) 013U0027 VMT 15/8 2) 15 1.2 G 3 4 A 4) G 3 4 A 4) 065F0115 VMT 20/8 2) 20 1.5 G 1 A 4) G 1 A 4) 065F0120 VMT 25/8 2) 25 1.6 G 1 1 4 A 4) G 1 1 4 A 4) 065F0125 VMA 15 5) 15 1) The capacity (k v ) applies to a P-band of 6 C. Other P-band, see Technical data. 2) For ordering of Cu fittings, see Accessories. 3) According to ISO 7/1 4) According to ISO 228/1 5) For ordering ext. thread tailpieces, see Accessories. 0.4 065F2031 0.6 065F2032 0.8 16 G 3 4 A 4) G 3 4 A 4) 065F2033 1.1 065F2034 1.7 065F2035 DH-SMT/SI VD.52.O6.02 Danfoss 11/2006 1

Data sheet Thermostatic actuator RAVV Ordering (continuous) Accessories for thermostat Picture Type designations Connection Code No. R Immersion pocket p ½ M14 1mm, brass, Ø 11 112 mm 017-4370 R p ½ M18 1.5mm, stainlees steel, Ø 11 112 mm 017-4369 Sensor stuffing box R ½ x M14 x 1 mm, rubber EPDM Ø 12.6 x 2.5 x 6 mm 013U0292 1) 1) Code includes housing, gasket, 4 washers and sealing bolt Accessories for valves Picture Type designations For valve Dimensions Code No. Compression fittings 1), 2), 3) Weld-on tailpieces External thread tailpieces VMT 15 VMT 20 Ø 15 1 Ø 16 1 Ø 18 1 Ø 18 1 Ø 22 1 013G4125 013G4126 013G4128 013U0134 013U0135 VMT 25 Ø 28 1 013U0140 VMA 15 Con. ext. thread acc. to EN 10226-1 - 003H6908 R ½ 003H6902 Valve stuffing box 3) RAV/VMT/VMA 065F0006 1) Compression fitting consist of compression ring and union 2) For copper pipe 3) The products can only be ordered in multiple packing containing 10 pieces each Technical data Type RAVVk V (m 3 /h) for a P-band in C of Max. working pressure Max. diff. pressure Max. test pressure Max. flow temp. 2 4 6 8 10 12 (bar) (bar) (bar) ( C) RAV 10/8 0.6 0.8 1.1 1.2 1.3 1.4 RAV or VMT 15/8 0.6 0.9 1.2 1.3 1.5 1.6 RAV or VMT 20/8 0.7 1.2 1.5 1.8 2.1 2.3 10 0.8 16 120 RAV or VMT 25/8 0.7 1.2 1.6 2.0 2.3 2.6 VMA 15 (k VS = 0.4) 0.2 0.3 0.4 5 1) VMA 15 (k VS = 0.63) 0.3 0.5 0.6 VMA 15 (k VS = 1.0) 0.4 0.7 0.8 16 2 1) 25 130 VMA 15 (k VS = 1.6) 0.4 0.8 1.1 VMA 15 (k VS = 2.5) 0.7 1.2 1.7 1 1) Materials RAV/VMT VMA Valve body Brass DZR Valve cone NBR rubber EPDM Spindle - DZR Temperature sensor Immersion pocket Capillary tube Cu Brass or stainless steel Cu 1) In installations requiring a low-noise function the differential pressure is not to exceed 1 bar. 2 VD.52.O6.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Thermostatic actuator RAVV Application principles The actuator RAVV must be installed in the flow pipeline only. Hot water cylinder Air heating coil Installation positions Temperature controller The valve body must be installed in the flow pipeline with the flow in the direction indicated by the cast-in arrow. The flow temperature must be min. 15 C higher than the set closing temperature. Temperature sensor The sensor must be installed in position from horizontal to vercally down. The sensor must always be placed in a pocket when the temperature is to be measured directly in a medium. DH-SMT/SI VD.52.O6.02 Danfoss 11/2006 3

Data sheet Thermostatic actuator RAVV Sizing Example: Temperature control for hot water service Given data: Load: 14 kw (12.000 kcal/h) Cooling (flow - return): 20 C Flow volume: Differential pressure Δp across the valve: 12 0.6m 3 h 20 0.12 bar Required: Correct valve size Method: From the flow volume (0.6 m 3 /h) and the differential pressure (0.12 bar) read off the necessary k V -value in the diagram = 1.75 In this example, a P-band of 6 C is required. From the k V -columns in the table, under 6 C, find the appropriate valve body. Here, the most suitable valve body is RAV 25/8 or VMT 25/8 with a k V -value of 1.6. 4 VD.52.O6.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Thermostatic actuator RAVV Design 1. Handle for temperature setting 2. Setting spring 3. Bellows 4. Valve stuffing box 5. Bottom screw 6. Valve body 7. Valve cone 8. Temperature sensor 9. Sensor stuffing box 10. Housing of sensor stuffing box 11. Gasket of sensor stuffing box 12. Sealing bolt of sensor stuffing box 12 10 11 9 Settings Temperature setting Relation between scale numbers 1-5 and closing temperature. The values given are approximate. DH-SMT/SI VD.52.O6.02 Danfoss 11/2006 5

Data sheet Thermostatic actuator RAVV Dimensions Ø55 R1 2 100 L 3 L 4 78 L 5 H 1 H 2 S 1 S 2 d L d 2 L 2 Ø9.5 RAVV-RAV-/8 d d 2 Width across flats DN L L 2 L 3 L 4 L 5 H 1 H ISO 7/1 2 S 1 S 2 (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) 10 R p 3 8 R 3 8 59 85 26 52 22 45 93 22 27 15 R p ½ R ½ 66 95 29 58 26 45 93 27 30 20 R p ¾ R ¾ 74 106 34 66 29 45 93 32 37 25 R p 1 R 1 90 125 40 75 34 58 106 41 46 RAVV-VMT-/8 DN 15 20 a b L 1 L 2 H 1 Width across flats mm ISO 228/1 (mm) (mm) (mm) S (mm) Ø 15 Ø 16 Ø 18 Ø 18 Ø 22 G ¾ A 66 90 93 30 G 1 A 74 101 93 37 25 Ø 28 G 1¼ A 90 120 106 45 RAVV-VMA a L L1 L2 S DN ISO 228/1 (mm) (mm) (mm) (mm) 15 G ¾ A 65 131 139 27 6 VD.52.O6.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Thermostatic actuator RAVV Dimensions (continuous) M 14 1 M 18 1.5 Immersion pocket Weld-on tailpieces External thread tailpieces G Ød L Weight (mm) (mm) (mm) (kg) 15 15 35 0.18 G R L Weight ( ) ( ) (mm) (kg) ¾ ½ 25.5 0.17 DH-SMT/SI VD.52.O6.02 Danfoss 11/2006 7

Data sheet Thermostatic actuator RAVV 8 VD.52.O6.02 Danfoss 11/2006 DH-SMT/SI

Temperature Controllers AFT 06/26/17/27 AVTB AVTQ DN15 AVTQ DN20 FJV STFW/VFG(S) 2 - STFW/AFT/VFG(S) 2 XB06 & IHPT AVT / VG(F) AVT / VGS AVT / VGU STM / VGS / AVT - STLS STM /VG(F) / AVT - STLV

8 9 7 10 6 11 5 12 =10 C 8 9 7 10 6 11 5 12 =10 C 8 9 7 10 6 11 12 8 9 7 10 6 11 12 Data sheet AFT 06, AFT 26, AFT 17, AFT 27 Thermostats Description / Application 5 =10 C 5 =10 C AFT 06 AFT 26 AFT 17 AFT 27 The thermostats operate according to the liquid expansion principle. For the AFT 06, AFT 17 designs, the setpoint adjuster is directly fitted to the actuator; for the AFT 17, AFT 27 designs, it is delivered separately. There are two sensor designs with different time constants. Temperature control of domestic hot water systems with storage tanks and restriction of the return flow temperature in district heating transfer station are the main fields of application. Technical data (thermostats, valves): Nominal diameter: DN 15-125 Nominal pressure: PN 16, 25, 40 Type of connection: flange Medium: circulation water, waterglycol mixtures, steam Medium temp.: -20 to 350 C Flow and return mounting Type-tested according to DIN 3440-TR in connection with the following valves: VFG 2, VFG 21, VFGS 2, VFG 33 and VFG 34. Combinations: temperature controller, safety temperature monitor, safety temperature limiter, see page 3, 4. Ordering Thermostat AFT *) acc. to DIN 3440 Type Setpoint Sensor / time Mounting Code No. o C constant * -20 50 065-4390 20 90 Sensor with Setpoint 065-4391 AFT 06 40 110 immersion adjuster at 065-4392 60 130 pocket bronze/ the actuator 065-4393 110 180 120 s 065-4394 -20 50 with immersion 065-4396 AFT 26 AFT 17 AFT 27 20 90 pocket Setpoint 065-4397 40 110 adjuster separate 065-4398 60 130 065-4399 -20 50 Setpoint 065-4400 20 90 adjuster at 065-4401 40 110 Spiral sensor/ the actuator 065-4402 60 130 20 s 065-4403 -20 50 without 065-4404 20 90 immersion Setpoint 065-4405 40 110 pocket adjuster separate 065-4406 60 130 065-4407 SIBC R&D VD.GA.G1.02 Danfoss 08/01 1

Data sheet Thermostats AFT 06, AFT 26, AFT 17, AFT 27 Ordering (continuous) Accessories for thermostat Type designation For thermostat Material Code No. Immersion pocket AFT 06, AFT 26 Stainless steel mat. No. 1.4571 003G1400 Combination piece KF2 003G1398 Technical data Type AFT 06 AFT 26 AFT 17 AFT 27 Setpoint range X s ( o C) -20 50, 20 90, 40 110, 60 130, 60 130 Time constant T 1) (s) 120 (with immersion pocket) 20 Gain K s (mm/ o C) 0.8 Max. adm. temp. at sensor Perm. ambient temperature ( o C) 0-70 at the thermostat Nominal pressure: (PN) 40 sensor, immersion pocket 100 o C above the adjusted setpoint Temperature sensor Smooth sensor Ø24 x 380 Spiral sensor Ø30 x 500 Sensor medium Silicon oil Sensor material Brass, bronze Cu spiral, nickel-plated Immersion pocket material Bronze, nickel-plated No immersion pocket Stainless steel Mat. No. 1.4571 Weight (kg) 3.0 3.5 3.5 3.8 Application examples 2 VD.GA.G1.02 Danfoss 08/01 SIBC R&D

8 9 8 9 7 10 7 10 8 9 7 10 6 11 6 11 5 12 5 12 6 11 =10 C =10 C 5 12 =10 C 7 6 8 5 =10 C 9 10 12 11 Data sheet Thermostats AFT 06, AFT 26, AFT 17, AFT 27 Construction 1 2 3 4 1 Valve body 2 Valve seat 3 Trim 4 Bonnet 5 Sensor 6 Setpoint adjuster 5 6 8 9 7 1 0 6 1 5 1 1 x 10 C AFT 06 / VFG 2 Valve - thermostat combinations Valve type VFG 2 VFU 2 VFGS 2 VFG 33 VFG 21 VFG 34 VFG 25 VFG 35 VFG 36 DN 15-125 15-125 15-125 25-125 Medium Water Steam Water Max. temp. ( o C) 200 (VFG 2) 200 200 200 150 (VFG 21) 350 (with ZF4) 350 (with ZF4) 200 (VFG 25) PN 16, 25, 40 25 Remark NO valve NC valve Steam valve 3-way valve mixing valve diverting valve SIBC R&D VD.GA.G1.02 Danfoss 08/01 3

7 6 8 5 =10 C 9 10 12 11 8 9 7 10 6 11 5 12 =10 C 8 9 7 10 6 11 5 12 =10 C Data sheet Thermostats AFT 06, AFT 26, AFT 17, AFT 27 Combinations AFT.. / STFL / VFG 2 AFT.. / STFW / VFG 2 Dimensions R1 R1 R1 R1 380 280 380 280 500 280 500 280 ø 24 ø 24 ø 30 ø 30 AFT 06 AFT 26 AFT 17 AFT 27 ø22 386 R1 DIN2999 SW36 Note: R1 conic male thread acc. to DIN 2999 Immersion pocket 4 VD.GA.G1.02 Danfoss 08/01 SIBC R&D

Data sheet Temperature controller AVTB (PN 16) Description AVTB is self-acting temperature controller used to control the water temperature in hot water tanks, heat exchangers, oil preheaters, etc. Controller closes on rising temperature. The controller has a control valve, thermostatic actuator and handle for temperature setting. Thermostatic actuator consist of a bellows, capillary tube and sensor. Main data: DN 15, 20, 25 k VS 1.9, 3.4, 5.5 m 3 /h PN 16 Setting range: 0 30 C / 20 60 C / 30 100 C Temperature: - Circulation water / glycolic water up to 30%: -25 +130 C Connections: - Int. thread - Ext. thread (weld-on and ext. thread tailpieces) Flow or return mounting, depending on sensor type. Ordering 1) Complete controller including sensor stuffing box. The immersion pocket is an accessory. 2) Including small sensor Ø 9.5 180. The sensor is to be mounted where the system temperature is warmer than the temperature in the valve housing. Insulaton disk is factory mounted on the controller. 3) Including small sensor Ø 9.5 150. Capillary tube length 2.3 m. 4) Including sensor Ø 18 210; available on request Example: Temperature controller, DN 15, k VS 1.9, PN 16, setting range 30 100 C, t max 130 C, ext. thread - 1 AVTB DN 15 Controller Code No: 003N5141 Option: - 1 Imm. pocket, brass Code No: 013U0290-1 Weld-on taipieces Code No: 003H6908 AVTB Controller Picture DN 15 20 25 Capillary tube length: 2 m. Accessories Setting range ( C) k VS (m 3 /h) Max. sensor temp. ( C) Internal thread Connection ISO 7/1 Code No. 1) External thread Connection ISO 228/1 Code No. 1) 0 30 55 003N2232 4) 003N5101 4) 20 60 1.9 90 R p ½ 003N8229 2) G ¾ A 003N5114 2) 30 100 130 003N8141 3) 003N5141 3) 0 30 55 003N3232 4) 003N5102 4) 20 60 3.4 90 R p ¾ 003N8230 2) G 1 A 003N5115 2) 30 100 130 003N8142 3) 003N5142 3) 0 30 55 003N4232 4) 003N5103 4) 20 60 5.5 90 R p 1 003N8253 2) G 1¼ A 003N5116 2) 30 100 130 003N8143 3) 003N5143 3) Picture Type designations DN Connection Code No. 15 003H6908 Weld-on taipieces 20-003H6909 25 003H6910 External thread taipieces 15 R ½ 003H6902 Con. ext. thread acc. to 20 R ¾ 003H6903 EN 10226-1 25 R 1 003H6904 R p ½ M14 1 mm, brass 182 mm, without sens.stuff. box 013U0290 Immersion pocket R p ½ M18 1,5 mm, st. steel 182 mm, with sens.stuff. box 003N0196 R p ¾ M22 1 mm, brass 220 mm, with sens.stuff. box 003N0050 R p ¾ M22 1 mm, st. steel 220 mm, with sens.stuff. box 003N0192 Insulation disk 1) 003N4022 1) For details see Installation positions section DH-SMT/SI VD.JK.Z2.02 Danfoss 11/2006 1

Data sheet Temperature controller AVTB (PN 16) Ordering (continuous) Service kits Picture Type designation for Code No. Repair set DN 15 003N4006 Two diaphragms, two O-rings, one rubber cone, DN 20 003N4007 one tube of grease and eight valve cover screws DN 25 003N4008 Thermostatic actuator 0 30 C, sensor Ø 18 210, 2m 003N0075 Thermostatic actuator 20 60 C, sensor Ø 9.5 180, 2m 003N0130 Thermostatic actuator 30 100 C, sensor Ø 9.5 150, 2.3m 003N0131 Housing of sensor stuffing box, R ½ M14 1 mm, rubber EPDM Ø 12.6 4 6 mm 013U8102 1) 1) For thermostatic actuators 20... 60 C and 30... 100 C; code includes housing and gasket of sensor stuffing box Technical data Nominal diameter DN 15 20 25 k VS value m 3 /h 1.9 3.4 5.5 Cavitation factor z 0.4 Nominal pressure PN 16 Max. differential pressure bar 10 Medium Circulation water / glycolic water up to 30% Medium ph Min. 7, max. 10 Medium temperature o C -25 +130 Connections valve Internal and external thread tailpieces Weld-on and external thread Materials Valve body internal thread MS 58, hot-pressed, DIN 17660, W.No. 2.0402, CuZn40Pb2 external thread Dezincing-free brass, BS 2872/CZ132 Valve seat Cr Ni steel, DIN 17440, W.No. 1.4301 Valve cone NBR-rubber Spindle Dezincing-free brass, BS 2872/CZ132 Other metal parts Dezincing-free brass, BS 2874/CZ132 Diaphragms, O-rings EPDM-rubber Temperature sensor Copper 0 30 o C R 152 A, C2H4F2 Sensor charge 20 60 o C Butane R600, C4H10 30 100 o C Carbon dioxide, CO2 Application principle Slow control system, setting range 30 100 C Fast control system, setting range 0 30 C/20 60 C 2 VD.JK.Z2.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Temperature controller AVTB (PN 16) Installation positions Temperature controller The controller can be installed in any position, with flow in the direction of the cast-in arrow. AVTB 20 60 must always be installed in the return line (sensor warmer than valve). If AVTB 20 60 has been installed in the return line from a service water heat exchanger (where for certain periods the return temperature approaches the sensor temperature) the installation of insulation disk is recommended (003N4022). Insulation disk is factory mounted on the product. Temperature sensor AVTB 0 30 and 30 100 can be installed either in flow or in return line. With AVTB 30 100, if temperature variations of more than 20 C occur at the valve, insulation disk (003N4022) must be installed between thermostatic actuator and valve body. Sensor Ø 18 210 mm 2) Sensor Ø 9.5 180 mm 1) Sensor Ø 9.5 150 mm 2) (AVTB 0 30 C) (AVTB 20 60 C) (AVTB 30 100 C) 1) The sensor is to be mounted where the system temperature is warmer than the temperature in the valve body 2) The sensor can be mounted where the system temperature is either warmer or colder than the temperature in the valve body Sizing DH-SMT/SI VD.JK.Z2.02 Danfoss 11/2006 3

Data sheet Temperature controller AVTB (PN 16) Sizing (continuous) Example Hot water temperature control in hot water tanks. Primary medium: Water Given: Load: 31 kw (26500 kcal/h) Primary temperature drop Δt: 20 K Differential pressure Δp across the valve: 1.7 bar Max. hot water temperature: 55 C Water volume Q: Required: The correct valve size Q 1.3 k v 1.0 m p 1.7 3 h 31 0.86 3 1.3m h 20 Temperature range and P-band Calculated k v value is 1 m 3 /h. From this value on the k V scale in the AVTB diagram, take a line horizontally to intersect the columns for recommended sizing range. Select the smallest possible valve, here an AVTB 15. A temperature range of 30 100 C can be assumed as suitable for this example. The P-band (X P ) and final temperature range can also be read from the AVTB diagram. The required closing temperature can be read from the scale for the valve selected. However, there are two temperature ranges that meet the requirement for a closing temperature of 55 C. X P is 9 K for the range 30 100 C, which means that the controller will yield the calculated capacity at a sensor temperature of 55 C minus 9 K = 46 C. For the range 20 60 C X P = 4 K. This means that the controller will yield the calculated capacity at 55 C minus 4 K = 51 C. To ensure the most stable control an AVTB 15 with a range 30 100 C should be chosen. The water in the hot water tank will reach the closing temperature (55 C) only when there has been no hot water demand for some time. Note: The values stated are mean values AVTB 0 30 C AVTB 30 100 C AVTB 20 60 C AVTB diagram to determine valve size, temperature range and proportional band (X P ). 4 VD.JK.Z2.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Temperature controller AVTB (PN 16) Design 1. Handle for temperature setting 2. Spring housing 3. Setting spring 4. O-ring 5. Diaphragm 6. Spindle 7. Valve body 8. Valve cone 9. Bellows 10. Bellows stop 11. Pressure stem 12. Temperature sensor 15 13. Sensor stuffing box 14. Housing of sensor stuffing box 13 14 15. Gasket of sensor stuffing box 16. Sealing bolt of sensor stuffing box 16 Settings Temperature setting Relation between scale numbers 1-5 and the closing temperature. The values given are approximate. Scale setting 1 2 3 4 5 C losing temperature (0 30 C) 0 3 15 23 30 C (20 60 C) 20 35 50 60 70 (30 100 C) 30 35 55 75 95 120 DH-SMT/SI VD.JK.Z2.02 Danfoss 11/2006 5

Data sheet Temperature controller AVTB (PN 16) Dimensions AVTB with internal thread AVTB with external thread Type H 1 mm H 2 mm L mm L 1 mm L2 mm L3 mm L4 mm a ISO 7/1 (int. thread) b ISO 228/1 (ext. thread) AVTB 15 217 133 72 14 141 149 75 R p ½ G ¾A AVTB 20 217 133 90 16 154 164 80 R p ¾ G 1A AVTB 25 227 138 95 19 168 167 83 R p 1 G 1¼A Immersion pockets Sensor stuffing box Weld-on tailpieces External thread tailpieces G Ød L Weight (mm) (mm) (mm) (kg) 15 15 35 0.18 20 20 40 0.26 25 27 40 0.38 G R L Weight ( ) ( ) (mm) (kg) ¾ ½ 25.5 0.17 1 ¾ 27.5 0.27 1 ¼ 1 32.5 0.45 6 VD.JK.Z2.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Temperature controller AVTB (PN 16) DH-SMT/SI VD.JK.Z2.02 Danfoss 11/2006 7

Data sheet Temperature controller AVTB (PN 16) 8 VD.JK.Z2.02 Danfoss 11/2006 DH-SMT/SI

Data sheet Flow-compensated temperature controller AVTQ DN 15 Description AVTQ prevents high temperatures in the heat exchanger when no hot water is tapped by rapidly shutting off the heat supply (e.g. hot district heating water). AVTQ can be used with most plate heat exchangers. However, the heat exchanger manufacturer should be contacted to ensure that the chosen heat exchanger has been approved for use with the AVTQ. Pressure-controlled opening/closing on start/stop tapping. Infinite adjustment of operating temperature. AVTQ controller consist of a thermostatic actuator, diaphragm element, main valve and pilot valve. Thermostatic actuator with diaphragm element and main valve are installed on the district heating (primary) side. The diaphragm element is, via impulse tubes, connected to the pilot valve on the domestic hot water (secondary) side. AVTQ is a self-acting flow-compensated temperature controller primarily for use in district heating systems with plate heat exchangers for instantaneous hot water production. It closes on rising sensor temperature. It has permanent no-load (idle) temperature setting on about 40 C which is offset by a pilot valve using flow-compensation principle during tapping. Tapping temperature can be set individually. Main data: DN 15 k VS 1.6 PN 16 - Main valve PN10 - Diaphragm element and pilot valve Suitable for domestic hot water (DHW) production in range of 45... 60 C Permanent no-load (idle) temperature (approx. 40 C) Temperature (primary): - Circulation water / glycolic water up to 30%: 2 100 C Connections: - Ext. thread (weld-on and thread tailpieces) Return mounting Ordering AVTQ controller Example: Flow-compensated temperature controller, DN 15, k VS 1.6, PN 16, setting range 45 60 C, t max 100 C, ext. thread Picture DN k vs Connection (mm) (m 3 /h) Main valve ISO 228/1 Pilot valve ISO 228/1 15 1.6 G ¾ A G 1 A (DN 20) Code No.* 003L7015-1 AVTQ controller, 45 60 C Code No: 003L7015 Option: - 1 Weld-on tailpieces Code No: 003H6908 * Controller incl. gland and compression fittings for mounting on Ø6 0.8 mm copper impulse tube. Accessories Picture Type designation DN Connection Code No. Weld-on tailpieces External thread tailpieces 15 Conical ext. thread acc. to EN 10226-1 003H6908 R ½ 003H6902 DH-SMT/SI VD.LJ.A1.02 Danfoss 10/2006 1

Data sheet Flow-compensated temperature controller AVTQ DN 15 Ordering (continuous) Service kits Picture Type designation Code No. Gasket for diaphragm housing 003L3154 Thermostatic actuator incl. sensor stuffing box 003L7100 Compression fittings for Ø6 mm copper tube (4 ferrules and 4 nuts) 003L7101 Pilot valve excl. compression fittings 003L7108 Main valve incl. complete valve insert 003L7109 Diaphragm element excl. compression fittings 003L7111 Sensor stuffing box incl. gasket 003L7120 Technical data Nominal diameter DN 15 k VS value m 3 /h 1.6 Control ratio 100 : 1 Cavitation factor z 0.6 Leakage acc. to standard IEC 534 < 0.05 % 4) Nominal pressure Max. differential pressure 6 bar Max. closing pressure 12 Medium Materials Temperature controller Diaphragm housing stuffing box Sensor Pilot valve Valve body RG5, DIN 1705, W.no. 2.1096.01 Valve insert and valve cone Dezincification resistant brass BS 2874 Valve seat, pressure relief cylinder CrNi steel, DIN 17440, W.no. 1.4404 Valve spindle CrNi steel, DIN 17440, W.no. 1.4435 Valve plate, O-ring, diaphragm EPDM Diaphragm housing CrNi steel, DIN 17440, W.no. 1.4435 Diaphragm plate CrNi steel, DIN 17440, W.no. 1.4436 Diaphragm spindle Dezincification resistant brass BS 2874 Housing Dezincification resistant brass BS 2874 Spindle CrNi steel, DIN 17440, W.no. 1.4401 Sensor Copper Sensor stuffing box Dezincification resistant brass BS 2874 Gasket EPDM Charge Carbon dioxide (CO 2 ) Valve body Dezincification resistant brass BS 2872 Valve base Dezincification resistant brass BS 2874 Valve spindle CrNi steel, DIN 17440, W.no. 1.4401 Setting spring CrNi steel, DIN 17440, W.no. 1.4568 Cone, spring retainer PPS-plastic O-ring EPDM 1) Valid for primary side (main valve) 2) Valid for secondary side (pilot valve and diaphragm element) 3) In case of domestic hot water (secondary side) ph lower than 7 -> the hardness of the water must be larger than the sulphate element HCO3 1 SO4 4) at T idle nom. + 10 C PN 16 1) 10 2) Medium ph Min. 7, max. 10 1),2),3) Medium temperature Connections C valve tailpieces Circulation water / glycolic water up to 30% 1) Domestic hot water (chlorine (cl) content max. 200 ppm) 2) 2 100 1) 2 90 2) Ext. thread Setting range Xs C 45 60 Time constant T acc. to EN 14597 s 4 Max. adm. temperature at sensor C 130 Max. water velocity around the sensor m/s 1.5 Capillary tube length m 1 Weld-on and external thread 2 VD.LJ.A1.02 Danfoss 10/2006 DH-SMT/SI

Data sheet Flow-compensated temperature controller AVTQ DN 15 Application principle The controller AVTQ must be installed in the return pipeline only. When domestic hot water (DHW) is tapped, flow through the pilot valve creates a pressure drop (force in the diaphragm housing) which is used to increase the temperature level from no-load (idle) to set tapping temperature. This temperature increase causes the main valve to open for flow on the district heating side and close when the temperature level again falls to the no-load operating level. No-load operation prevents the district heating line becoming cold. Tapping temperature can be set individually. Design 1. Thermostatic actuator with sensor stuffing box 2. Pressure spindle 3. Diaphragm housing stuffing box 4. Nut 5. Diaphragm housing 6. Diaphragm spindle 7. Control diaphragm 8. Compression connection for impulse tube 9. Intermediate ring 10. Nameplate 11. Main spring 12. Damping + teflon ring 13. Valve spindle 14. Valve insert 15. Pressure relief cylinder 16. Valve body (main valve) 17. Handle for temperature setting 18. Spindle 19. Valve base 20. Spring retainer 21. Setting spring 22. Pressure equalizing hole 23. Valve cone 24. Valve body (pilot valve) 25. Compression connection for impulse tube 26. Sealing bolt of sensor stuffing box 27. Gasket of sensor stuffing box 28. Housing of sensor stuffing box DH-SMT/SI VD.LJ.A1.02 Danfoss 10/2006 3

Data sheet Flow-compensated temperature controller AVTQ DN 15 Installation One-way heat exchanger Two-way heat exchanger Three-way heat exchanger Fig. 3 AVTQ can be used with most types of plate heat exchangers. The AVTQ manufacturer should be contacted to ensure: - that the AVTQ is approved for use with the chosen heat exchanger - the correct material selection when connection the heat exchangers - the correct connection of one pass plate heat exchangers; layer distribution might occur, i.e. reduced comfort The system functions optimal when the sensor is installed right inside the heat exchanger (see page 3). However, the sensor head should be placed approx. 5 mm from the plate which divides the primary and the secondary side of the exchanger. If the sensor head is placed too close to the dividing plate, the sensor might measure the temperature of the plate and not the temperature of the medium. For correct noload operation, thermal flow should be avoided since hot water rises and increases the no-load consumption. Note: water velocity around the sensor must be in accordance with the requirements for copper tube. The temperature controller (main valve): - must be installed in the return pipeline on the district heating (primary) side of the heat exchanger - the diaphragm element can be turned in any position in relation to the valve body so that impulse tube can be connected in the required direction The pilot valve: - must only be installed in the flow pipeline on the secondary side of the heat exchanger - in systems where it cannot be excluded that drinking water is contaminated with fine dust from time to time, it is recommended not to mount the pilot valve with the impulse tube connections downwards (fig.2) to avoid dirt ingress in the impulse tubes and diaphragm housing The sensor can be installed in any position (fig.1) It is strongly recommended that: - the primary and secondary sides of the heat exchanger should be flushed through before the heating system is used the first time. In addition the (+) and ( ) side of the diaphragm should be vented. - dirt strainers with a mesh size of max. 0.6mm should be installed in both, the cold tap water pipeline ahead of the pilot valve and in the flow pipeline from the district heating network. Fig. 1 Fig. 2 4 VD.LJ.A1.02 Danfoss 10/2006 DH-SMT/SI

Data sheet Flow-compensated temperature controller AVTQ DN 15 Sizing Example Given data: T 1 = 65 C T 3 = 50 C T 4 = 10 C Q 2 = 0.3, 0.6, 0.9 m 3 /h (300, 600, 900 l/h) T 1 - District heating water flow temperature T 3 - Hot water temperature T 4 - Cold water temperature Q 2 - Hot water service flow Primary Secondary District heating flow line Hot water District heating return line Cold water Fig. 4 The maximum heating power P max is calculated according to formula: Q2 x T2 Q2 x T3 T 0.86 0.86 900 x 50 10 42 kw 0.86 4 pmax p max Based on max. heating power heat exchanger could be selected. Information about the cooling across the primary side of heat exchanger can be acquired either by contacting the manufacturer of the heat exchanger or by using the manufacturer s dimensioning diagram. Chosen AVTQ main valve has k vs 1.6 m 3 /h and therefore is big enough. Values for flows of 300 and 600 l/h are calculated on the same way and entered in the table. Tab.1 W (kw) Secondary flow Q 2 (l/h) Primary flow Q 1 (l/h) k v (m 3 /h) Cooling T 1 ( C) 14 300 280 0.39 43 28 600 600 0.85 40 42 900 925 1.31 39 In the example chosen cooling on primary side (ΔT 1 ) is 43 C, 40 C or 39 C, the differential pressure across the AVTQ main valve (Δp v ) is 0.5 bar. The primary flow Q 1 can be calculated according to formula: P Q x 0.86 T max 1 1 Q 1 925 l / h Using the above data, the needed capacity of the main valve (k v ) can be calculated: k v k v = 1.31 m 3 /h v 42 x 0.86 39 3 Q1 m / h 0.925 p bar 0. 5 DH-SMT/SI VD.LJ.A1.02 Danfoss 10/2006 5

Data sheet Flow-compensated temperature controller AVTQ DN 15 Sizing (continuous) The pressure drop across the pilot valve can be read from the diagram below Pressure drop (Δp pilot ) across pilot valve as a function of the setting value and secondary flow 6 VD.LJ.A1.02 Danfoss 10/2006 DH-SMT/SI

Data sheet Flow-compensated temperature controller AVTQ DN 15 Setting The AVTQ controller can be used with plate heat exchangers of up to 75 kw. As a result of the flow compensation principle an actual dimensioning of the valve is unnecessary, because the valve will always adjust around the required temperature without regard to the flow. Typical settings: This means that if the controller is set to 50 C (this is done at 75% of max. tapping flow to obtain optimum control), then this temperature will be maintained whether or not the actual flow is 120 l/h, 900 l/h or more. Between 120 l/h and 900 l/h the temperature will vary approx. 4 C. Minimum: Designation Application values Pilot valve setting Flow temperature, primary Tp = 65 C Differential pressure across the AVTQ main valve p = 0.5 bar Hot water temperature, secondary Ts (hot) = 50 C 3.0 Cold water temperature, secondary Ts (cold) = 10 C Secondary flow Qs = 750 l/h Maximum: Designation Application values Pilot valve setting Flow temperature, primary Tp = 100 C Differential pressure across the AVTQ main valve p = 6.0 bar Hot water temperature, secondary Ts (hot) = 50 C 2.0 Cold water temperature, secondary Ts (cold) = 10 C Secondary flow Qs = 750 l/h The values mentioned above are reference values and therefore corrections of pilot valve settings might be necessary in order to obtain the required temperature. Other approx. setting values: Tapping temperature = 50 C Tapping flow = 750 l/h T primary p (bar) 0.5 1.0 3.0 6.0 65 C 3.0 2.5 2.5 2.5 80 C 2.75 2.5 2.25 2.25 100 C 2.5 2.5 2.25 2.0 DH-SMT/SI VD.LJ.A1.02 Danfoss 10/2006 7

Data sheet Flow-compensated temperature controller AVTQ DN 15 Dimensions R 1/2 DN (mm) L 1 (mm) L 2 (mm) L 3 (mm) a ISO 228/1 b ISO 228/1 Weight (kg) 15 65 25.5 35 G ¾ A G ¾ A 3.57 8 VD.LJ.A1.02 Danfoss 10/2006 DH-SMT/SI

Data sheet Flow-compensated temperature controller AVTQ DN 20 Description AVTQ prevents high temperatures in the heat exchanger when no hot water is tapped by rapidly shutting off the heat supply (e.g. hot district heating water). AVTQ can be used with most plate heat exchangers. However, the heat exchanger manufacturer should be contacted to ensure that the chosen heat exchanger has been approved for use with the AVTQ. Pressure-controlled opening/closing on start/stop tapping. Infinite adjustment of operating temperature. AVTQ controller consist of a thermostatic actuator, diaphragm element, main valve and pilot valve. Thermostatic actuator with diaphragm element and main valve are installed on the district heating (primary) side. The diaphragm element is, via impulse tubes, connected to the pilot valve on the domestic hot water (secondary) side. AVTQ is a self-acting flow-compensated temperature controller primarily for use in district heating systems with plate heat exchangers for instantaneous hot water production. It closes on rising sensor temperature. It has permanent no-load (idle) temperature setting on about 35 C which is offset by a pilot valve using flow-compensation principle during tapping. Tapping temperature can be set individually. Main data: DN 20 k VS 3.2 PN 16 - Main valve PN10 - Diaphragm element and pilot valve Suitable for domestic hot water (DHW) production in range of 45... 60 C Permanent no-load (idle) temperature (approx. 35 C) Temperature (primary): - Circulation water / glycolic water up to 30%: 2 100 C Connections: - Ext. thread (weld-on and thread tailpieces) Return mounting Ordering Example: Flow-compensated temperature controller, DN 20, k VS 3.2, PN 16, setting range 45 60 C, t max 100 C, ext. thread AVTQ controller Picture DN (mm) k vs (m 3 /h) Connection Main valve ISO 228/1 Pilot valve ISO 228/1 Code No.* 20 3.2 G 1 A G 1 A 003L7020-1 AVTQ controller, 45 60 C Code No: 003L7020 Option: - 1 Weld-on tailpieces Code No: 003H6909 * Controller incl. gland and compression fittings for mounting on Ø6 0.8 mm copper impulse tube. Accessories Picture Type designation DN Connection Code No. Weld-on tailpieces External thread tailpieces 20 Conical ext. thread acc. to EN 10226-1 003H6909 R ¾ 003H6903 DH-SMT/SI VD.LJ.B1.02 Danfoss 10/2006 1

Data sheet Flow-compensated temperature controller AVTQ DN 20 Ordering (continuous) Service kits Picture Type designation Code No. Gasket for diaphragm housing 003L3154 Thermostatic actuator incl. sensor stuffing box 003L7100 Compression fittings for Ø6 mm copper tube (4 ferrules and 4 nuts) 003L7101 Main valve incl. complete valve insert 003L7107 Pilot valve excl. compression fittings 003L7108 Diaphragm element excl. compression fittings 003L7111 Sensor stuffing box incl. gasket 003L7120 Technical data 1) Valid for primary side (main valve) 2) Valid for secondary side (pilot valve and diaphragm element) 3) In case of domestic hot water (secondary side) ph lower than 7 -> the hardness of the water must be larger than the sulphate element HCO3 1 SO4 4) at T idle nom. + 10 C Nominal diameter DN 20 k VS value m 3 /h 3.2 Control ratio 100 : 1 Cavitation factor z 0.6 Leakage acc. to standard IEC 534 < 0.05 % 4) Nominal pressure Max. differential pressure Materials Temperature controller Diaphragm housing stuffing box Sensor Pilot valve PN 16 1) 10 2) Min. differential pressure bar 0.2 Max. closing pressure 12 Min. tapping flow l/h 200 Medium Medium ph Min. 7, max. 10 1),2),3) Medium temperature Connections C valve tailpieces Valve body RG5, DIN 1705, W.no. 2.1096.01 Valve insert and valve cone Dezincification resistant brass BS 2874 Valve seat, pressure relief cylinder CrNi steel, DIN 17440, W.no. 1.4404 Valve spindle CrNi steel, DIN 17440, W.no. 1.4435 Valve plate, O-ring, diaphragm EPDM Diaphragm housing CrNi steel, DIN 17440, W.no. 1.4435 Diaphragm plate CrNi steel, DIN 17440, W.no. 1.4436 Diaphragm spindle Dezincification resistant brass BS 2874 Housing Dezincification resistant brass BS 2874 Spindle CrNi steel, DIN 17440, W.no. 1.4401 Sensor Copper Sensor stuffing box Dezincification resistant brass BS 2874 Gasket EPDM Charge Carbon dioxide (CO 2 ) Valve body Dezincification resistant brass BS 2872 Valve base Dezincification resistant brass BS 2874 Valve spindle CrNi steel, DIN 17440, W.no. 1.4401 Setting spring CrNi steel, DIN 17440, W.no. 1.4568 Cone, spring retainer PPS-plastic O-ring EPDM 4 Circulation water / glycolic water up to 30% 1) Domestic hot water (chlorine (cl) content max. 200 ppm) 2) 2 100 1) 2 90 2) Ext. thread Setting range Xs C 45 60 Time constant T acc. to EN 14597 s 4 Max. adm. temperature at sensor C 130 Max. water velocity around the sensor m/s 1.5 Capillary tube length m 1 Weld-on and external thread 2 VD.LJ.B1.02 Danfoss 10/2006 DH-SMT/SI

Data sheet Flow-compensated temperature controller AVTQ DN 20 Application principle The controller AVTQ must be installed in the return pipeline only. When domestic hot water (DHW) is tapped, flow through the pilot valve creates a pressure drop (force in the diaphragm housing) which is used to increase the temperature level from no-load (idle) to set tapping temperature. This temperature increase causes the main valve to open for flow on the district heating side and close when the temperature level again falls to the no-load operating level. No-load operation prevents the district heating line becoming cold. Tapping temperature can be set individually. Design 1. Thermostatic actuator with sensor stuffing box 2. Pressure spindle 3. Diaphragm housing stuffing box 4. Nut 5. Diaphragm housing 6. Diaphragm spindle 7. Control diaphragm 8. Compression connection for impulse tube 9. Intermediate ring 10. Nameplate 11. Main spring 12. Damping + teflon ring 13. Valve spindle 14. Valve insert 15. Pressure relief cylinder 16. Valve body (main valve) 17. Handle for temperature setting 18. Spindle 19. Valve base 20. Spring retainer 21. Setting spring 22. Pressure equalizing hole 23. Valve cone 24. Valve body (pilot valve) 25. Compression connection for impulse tube 26. Sealing bolt of sensor stuffing box 27. Gasket of sensor stuffing box 28. Housing of sensor stuffing box DH-SMT/SI VD.LJ.B1.02 Danfoss 10/2006 3

Data sheet Flow-compensated temperature controller AVTQ DN 20 Installation One-way heat exchanger Two-way heat exchanger Three-way heat exchanger Fig. 3 AVTQ can be used with most types of plate heat exchangers. The AVTQ manufacturer should be contacted to ensure: - that the AVTQ is approved for use with the chosen heat exchanger - the correct material selection when connection the heat exchangers - the correct connection of one pass plate heat exchangers; layer distribution might occur, i.e. reduced comfort The system functions optimal when the sensor is installed right inside the heat exchanger (see page 3). However, the sensor head should be placed approx. 5 mm from the plate which divides the primary and the secondary side of the exchanger. If the sensor head is placed too close to the dividing plate, the sensor might measure the temperature of the plate and not the temperature of the medium. For correct noload operation, thermal flow should be avoided since hot water rises and increases the no-load consumption. Note: water velocity around the sensor must be in accordance with the requirements for copper tube. The temperature controller (main valve): - must be installed in the return pipeline on the district heating (primary) side of the heat exchanger - the diaphragm element can be turned in any position in relation to the valve body so that impulse tube can be connected in the required direction The pilot valve: - must only be installed in the flow pipeline on the secondary side of the heat exchanger - in systems where it cannot be excluded that drinking water is contaminated with fine dust from time to time, it is recommended not to mount the pilot valve with the impulse tube connections downwards (fig.2) to avoid dirt ingress in the impulse tubes and diaphragm housing The sensor can be installed in any position (fig.1) It is strongly recommended that: - the primary and secondary sides of the heat exchanger should be flushed through before the heating system is used the first time. In addition the (+) and ( ) side of the diaphragm should be vented. - dirt strainers with a mesh size of max. 0.6mm should be installed in both, the cold tap water pipeline ahead of the pilot valve and in the flow pipeline from the district heating network. Fig. 1 Fig. 2 4 VD.LJ.B1.02 Danfoss 10/2006 DH-SMT/SI

Data sheet Flow-compensated temperature controller AVTQ DN 20 Sizing Example Given data: T 1 = 65 C T 3 = 50 C T 4 = 10 C Q 2 = 0.3, 0.6, 0.9 m 3 /h (300, 600, 900 l/h) T 1 - District heating water flow temperature T 3 - Hot water temperature T 4 - Cold water temperature Q 2 - Hot water service flow Primary Secondary District heating flow line Hot water District heating return line Cold water Fig. 4 The maximum heating power P max is calculated according to formula: Q2 x T2 Q2 x T3 T 0.86 0.86 900 x 50 10 42 kw 0.86 4 pmax p max Based on max. heating power heat exchanger could be selected. Information about the cooling across the primary side of heat exchanger can be acquired either by contacting the manufacturer of the heat exchanger or by using the manufacturer s dimensioning diagram. In the example chosen cooling on primary side (ΔT 1 ) is 43 C, 40 C or 39 C, the differential pressure across the AVTQ main valve (Δp v ) is 0.2 bar. Chosen AVTQ main valve has k vs 3.2 m 3 /h and therefore is big enough. Values for flows of 300 and 600 l/h are calculated on the same way and entered in the table. Tab.1 W (kw) Secondary flow Q 2 (l/h) Primary flow Q 1 (l/h) k v (m 3 /h) Cooling T 1 ( C) 14 300 280 0.63 43 28 600 600 1.34 40 42 900 925 2.07 39 They can be plotted on the diagram overleaf (fig. 5) and connected. The temperature variation can be read from the diagram as the difference between the temperature lines intersected by the curve The primary flow Q 1 can be calculated according to formula: P Q x 0.86 T max 1 1 Q 1 925 l / h Using the above data, the needed capacity of the main valve (k v ) can be calculated: k v k v = 2.07 m 3 /h v 42 x 0.86 39 3 Q1 m / h 0.925 p bar 0. 2 DH-SMT/SI VD.LJ.B1.02 Danfoss 10/2006 5

Data sheet Flow-compensated temperature controller AVTQ DN 20 Sizing (continuous) Fig. 5 In the example shown, the temperature will fall 2 C when the hot water service flow rises from 300 l/h to 600 l/h and fall a further 2 C when the flow rises from 600 l/h to 900 l/h. When moving to the right in the diagram, the temperature will increase by 2 C per line. When moving to the left in the diagram, the temperature will drop 2 C per line. 6 VD.LJ.B1.02 Danfoss 10/2006 DH-SMT/SI

Data sheet Flow-compensated temperature controller AVTQ DN 20 Sizing (continuous) The pressure drop across the pilot valve can be read from the diagram below. Fig. 6 Pressure drop (Δp pilot ) across pilot valve as a function of the setting value and secondary flow Setting The AVTQ valve can be used with plate heat exchangers of up to 150 kw. As a result of the flow compensation principle an actual dimensioning of the valve is unnecessary, because the valve will always adjust around the required temperature without regard to the flow. This means that if the valve is set to 50 C (this is done at 75% of max. tapping flow to obtain optimum control), then this temperature will be maintained whether or not the actual flow is 300 l/h, 900 l/h or more. Between 300 l/h and 900 l/h the temperature will vary approx. 4 C. Typical settings: Minimum: Designation Application values Pilot valve setting Flow temperature, primary Tp = 65 C Differential pressure across the AVTQ main valve p = 0.2 bar Hot water temperature, secondary Ts (hot) = 50 C 4.0 Cold water temperature, secondary Ts (cold) = 10 C Secondary flow Qs = 800 l/h Maximum: Designation Application values Pilot valve setting Flow temperature, primary Tp = 100 C Differential pressure across the AVTQ main valve p = 4.0 bar Hot water temperature, secondary Ts (hot) = 50 C 2.5 Cold water temperature, secondary Ts (cold) = 10 C Secondary flow Qs = 800 l/h The values mentioned above are reference values and therefore corrections of pilot valve settings might be necessary in order to obtain the required temperature. Other approx. setting values: Tapping temperature = 50 C Tapping flow = 800 l/h T primary p (bar) 0.5 1.0 3.0 6.0 65 C 3.0 2.5 2.5 2.5 80 C 2.75 2.5 2.25 2.25 100 C 2.5 2.5 2.25 2.0 DH-SMT/SI VD.LJ.B1.02 Danfoss 10/2006 7

Data sheet Flow-compensated temperature controller AVTQ DN 20 Dimensions R 3/4 DN (mm) L 1 (mm) L 2 (mm) L 3 (mm) a ISO 228/1 b ISO 228/1 Weight (kg) 20 70 27.5 40 G 1 A G 1 A 3.59 8 VD.LJ.B1.02 Danfoss 10/2006 DH-SMT/SI

Data sheet Return temperature limiter FJV (PN 16) Description The FJV ensures that return water is cooled to required temperature before it flows back to the district heating plant. Controller closes on rising temperature. The controller has a control valve, thermostatic actuator and handle for temperature setting. Thermostatic actuator consist of a bellows only. For block and district heating systems. FJV is self-acting temperature controller used to control: - return water temperature from hot water tanks in direct connected district heating systems - return water temperature in district heating systems with mixing loop. Main data: DN 15, 20, 25 k vs 1.9, 3.4, 5.5 m 3 /h PN 16 Setting range: 20 60 C Temperature: - Circulation water / glycolic water up to 30%: 2 130 C Connections: - Int. thread - Ext. thread (weld-on and ext. thread tailpieces) Ordering Example: Return temperature limiter, DN 15, k vs 1.9, PN 16, setting range 20 60 C, t max 130 C, ext. thread - 1x FJV DN 15 controller Code No: 003N5117 FJV Controller Picture DN 15 Setting range ( C) k vs (m 3 /h) Internal thread Connection ISO 7/1 Code No. External thread Connection ISO 228/1 Code No. 1.9 R p ½ 003N2250 G ¾ A 003N5117 20 20 60 C 3.4 R p ¾ 003N3250 G 1 A 003N5118 25 5.5 R p 1 003N4250 G 1¼ A 003N5119 Option: - 1x Weld-on taipieces Code No: 003H6908 Accessories Picture Type designation DN Code No. 15 003H6908 Weld-on taipieces 20 003H6909 25 003H6910 15 R ½ 003H6902 External thread taipieces 20 R ¾ 003H6903 25 R 1 003H6904 Service kits Picture Type designation for Code No. Repair set DN 15 003N4006 Two diaphragms, two O-rings, one rubber cone, one tube of grease DN 20 003N4007 and eight valve cover screws DN 25 003N4008 Thermostatic actuator 20 60 C 003N0084 DH-SMT/SI VD.54.H4.02 Danfoss 08/2006 1

Data sheet Return temperature limiter FJV (PN 16) Technical data Nominal diameter DN 15 20 25 k vs value m 3 /h 1.9 3.4 5.5 Nominal pressure PN 16 Max. differential pressure bar 10 Medium Circulation water / glycolic water up to 30% Medium ph Min. 7, max. 10 Medium temperature -25 +130 o C Materials Valve body internal thread MS 58, hot-pressed, DIN 17660, W.No. 2.0401, CuZn40Pb3 external thread Dezincing-free brass, BS 2872/CZ132 Valve seat Cr Ni steel, DIN 17440, W.No. 1.4301 Valve cone NBR-rubber Spindle Dezincing-free brass, BS 2874/CZ132 Diaphragms, O-rings EPDM-rubber Application principle FJV FJV Installation positions Temperature controller 1. FJV must be installed immediately behind the hot water tank. 2. If central control of return water temperature is required (in district heating systems with mixing loop), FJV must be positioned so that return water temperature from hot water tank does not affect the element. The controller must be installed in return line, as shown under Application principle section. It can be installed in any position, with flow in the direction of the cast-in arrow. Pipe connection from system and tank to FJV must not be insulated because it must be allowed to give off heat. Installation and service are described in detail in the instructions, which is supplied with the controller. Separate instructions are available. 2 VD.54.H4.02 Danfoss 08/2006 DH-SMT/SI

Data sheet Return temperature limiter FJV (PN 16) Sizing Capacity diagram, P band ~ 16 K. Control capacity Q is given for different differential pressures Δp. Ex.1 Ex.3 Ex.2 Example no. 1 Water volume : 1.0 m 3 /h (0.28 l/s) Differential pressure: 0.05 bar (0.5 m mpv) k v = 4.5 -> k vs = 5.5 Valve selection: FJV 25 Example no. 2 Water volume: 0.5 m 3 /h (0.14 l/s) Differential pressure: 0.15 bar (1.5 m mpv) k v = 1.3 -> k vs = 1.9 Valve selection: FJV 15 Example no. 3 Water volume: 0.6 m 3 /h (0.17 l/s) Differential pressure: 0.04 bar (0.4 m mpv) k v = 3.0 -> k vs = 3.4 Valve selection: FJV 20 Design 1. Handle for temperature setting 2. Spring housing 3. Setting spring 4. Spindle guide 5. O-ring 6. Valve cover 7. Diaphragm 8. Valve cone 9. Bellows stop 10. Thermostatic actuator 11. Bellows DH-SMT/SI VD.54.H4.02 Danfoss 08/2006 3

Data sheet Return temperature limiter FJV (PN 16) Settings Temperature setting FJV have numbered neutral scale. The drawing shows the relation between scale numbers and return water temperature. Values given are indicative only. Scale setting Closing temperature Dimensions FJV with internal thread FJV with external thread Type H 1 mm H 2 mm L mm L2 mm L3 mm L4 mm a ISO 7/1 (int. thread) b ISO 228/1 (ext. thread) FJV 15 71 133 72 141 149 75 R p ½ G ¾A FJV 20 71 133 90 154 164 80 R p ¾ G 1A FJV 25 76 138 95 168 167 83 R p 1 G 1¼A 4 VD.54.H4.02 Danfoss 08/2006 DH-SMT/SI

Max. Anzug der Über 100 Data sheet STFW / VFG(S) 2, STFW / AFT / VFG(S) 2 Temperature controller with safety temperature monitor Description / Application STFW / VFG(S) 2 STFW / AFT / VFG(S) 2 The controllers STFW / VFG(S) 2 and STFW / AFT / VFG 2 are used for temperature control and temperature monitoring of drinking water and heating systems. Nominal diameter DN 15-125 Nominal pressure PN 16, 25, 40 Flow medium Circulation water Medium temperature: 5-350 o C Type of connection Flange - Type-tested acc. to DIN 3440 - District heating systems acc. to DIN 4747 - Heating systems acc. to DIN 4751 and DIN 4752 - Water heating systems for drinking and industrial waters acc. to DIN 4753 Ordering Example 1: Safety temperature monitor STFW / VFG 2, DN 25, PN 25, limit range 10-75 o C: - 1x STFW thermostat Code no: 065-4408 - 1x VFG 2 DN 25 valve Code no: 065B2403 Example 2: Temperature controller with safety temperature monitor STFW / AFT / VFG 2, DN 25, PN 25, limit range 10-75 o C, setpoint range 20-90 o C: - 1x STFW thermostat Code no: 065-4408 - 1x AFT 06 thermostat Code no: 065-4135 - 1x VFG 2 DN 25 valve Code no: 065B2403-1x KF2 comb. piece Code no: 003G1398 Parts will be delivered separatly. Note: * only with extension piece ZF4 (see accessories) and only PN 25, 40; PN 16 t max. = 300 o C VFG 2 (Cone: metal / metal sealing) DN k vs t max. Code No. mm m 3 /h o C PN 16 PN 25 PN 40 15 4.0 200 065B2388 065B2401 065B2411 20 6.3 200 065B2389 065B2402 065B2412 25 8.0 200 065B2390 065B2403 065B2413 32 16 200 065B2391 065B2404 065B2414 40 20 200 065B2392 065B2405 065B2415 50 32 200 065B2393 065B2406 065B2416 65 50 200 065B2394 065B2407 065B2417 80 80 200 065B2395 065B2408 065B2418 100 125 200 065B2396 065B2409 065B2419 125 160 200 065B2397 065B2410 065B2420 VFGS 2 (for steam) DN k vs t max. Code No. mm m 3 /h o C PN 16 PN 25 PN 40 15 4.0 350* 065B2430 065B2443 065B2453 20 6.3 350* 065B2431 065B2444 065B2454 25 8.0 350* 065B2432 065B2445 065B2455 32 16 350* 065B2433 065B2446 065B2456 40 20 350* 065B2434 065B2447 065B2457 50 32 350* 065B2435 065B2448 065B2458 65 50 350* 065B2436 065B2449 065B2459 80 80 350* 065B2437 065B2450 065B2460 100 125 350* 065B2438 065B2451 065B2461 125 160 350* 065B2439 065B2452 065B2462 SIBC R&D VD.GA.Q1.02 Danfoss 12/01 1

8 9 7 10 6 11 5 12 =10 C 8 9 7 10 6 11 5 12 =10 C Max. Anzug der Über 100 Data sheet Temp. controller with safety temperature monitor STFW/VFG(S), STFW/AFT/VFG(S) Ordering (continuous) 1) conic male thread DIN 2999 Safety thermostat STFW Limit range o C Temperature sensor with bronze Code No. immersion pocket, length, connect. 10 75 065-4408 30 95 386 mm, R 1 1) 065-4409 40 110 065-4410 *) acc. to DIN 3440 Thermostat AFT Type Setpoint Sensor / time Mounting Code No. o C constant * -20 50 065-4390 20 90 Sensor with Setpoint 065-4391 AFT 06 40 110 immersion adjuster at 065-4392 60 130 pocket bronze/ the actuator 065-4393 110 180 120 s 065-4394 -20 50 with immersion 065-4396 AFT 26 AFT 17 AFT 27 20 90 pocket Setpoint 065-4397 40 110 adjuster separate 065-4398 60 130 065-4399 -20 50 Setpoint 065-4400 20 90 adjuster at 065-4401 40 110 Spiral sensor/ the actuator 065-4402 60 130 20 s 065-4403 -20 50 without 065-4404 20 90 immersion Setpoint 065-4405 40 110 pocket adjuster separate 065-4406 60 130 065-4407 Accessories Type Note Code No. Immersion For thermostat AFT 06, AFT 26 003G1400 pocket (Stainless steel mat. No. 1.4571) Comb. piece For temperatures up to 200 o C 003G1398 KF2 Valve stem For temperatures 200 to 350 o C 003G1394 extension ZF4 Valve stem For temperatures up to 200 o C 003G1393 extension with position indicator ZF6 Flowdivider Flowdivider DN 15, 20 065B2775 for VFGS 2 Flowdivider DN 25, 32 065B2776 (noise reduction) Flowdivider DN 40, 50 065B2777 Flowdivider DN 65, 80 065B2778 Flowdivider DN 100, 125 065B2779 Remark: Above pressure 14 bar and in combination with thermostats use ZF6 extension piece. 2 VD.GA.Q1.02 Danfoss 12/01 SIBC R&D

Data sheet Temp. controller with safety temperature monitor STFW/VFG(S), STFW/AFT/VFG(S) Technical data Valves VFG 2, VFGS 2 Nominal diameter (DN) 15 20 25 32 40 50 65 80 100 125 k vs value (m 3 /h) 4 6.3 8 16 20 32 50 80 125 160 z value acc. to VDMA 24 422 0.6 0.6 0.6 0.55 0.55 0.5 0.5 0.45 0.4 0.35 p max.* (bar) PN 16 16 16 16 16 16 16 16 16 15 15 PN 25, 40 20 20 20 20 20 20 20 20 15 15 Nominal pressure PN 16, 25 or 40, flanges to DIN 2501 Flow medium VFG 2 Water for heating, district heating and cooling systems VFGS 2 Steam Pressure balance Stainless steel bellows, mat. No.1.4571 PN 16 Grey cast iron EN-GJL-250 (GG-25) Valve body material PN 25 Ductile iron EN-GJS-400 (GGG-40.3) PN 25 / PN 40 Cast steel GP240GH (GS-C 25) Cone material VFG 2 Stainless steel, mat. No. 1.4404 VFGS 2 Stainless steel, mat. No. 1.4021 Seat material Stainless steel, mat. No. 1.4021 * above 14 bar use of extension piece ZF4, ZF6 or combination piece KF2 is necessary. Thermostat STFW Limit range X s ( o C) 10 75, 30 95, 45 95 Time constant T (s) max. 120 acc. to DIN 3440 Gain K R (mm/ o C 0.6 Max. adm. temp. at sensor ( o C) 100 o C above maximum setpoint Nominal pressure sensor (PN) 40 Connection pipe length (m) 5 Temperature sensor material Copper / brass Immersion pocket material Bronze, nickel-plated Stainless steel mat. No. 1.4571 Approx. weight (kg) 3.5 Thermostats AFT Type AFT 06 AFT 26 AFT 17 AFT 27 Setpoint range X s ( o C) -20 50, 20 90, 40 110, 60 130, 60 130 Time constant T 1) (s) 120 (with immersion pocket) 20 Gain K s (mm/ o C) 0.8 Max. adm. temp. at sensor Perm. ambient temperature ( o C) 0-70 at the thermostat Nominal pressure: (PN) 40 sensor, immersion pocket Connection pipe length (m) 5 100 o C above the adjusted setpoint Temperature sensor Smooth sensor Ø24 x 380 Spiral sensor Ø30 x 500 Sensor medium Silicon oil Sensor material Brass, bronze Cu spiral, nickel-plated Immersion pocket material Bronze, nickel-plated No immersion pocket Stainless steel Mat. No. 1.4571 Weight (kg) 3.0 3.5 3.5 3.8 SIBC R&D VD.GA.Q1.02 Danfoss 12/01 3

Max. Anzug der über Data sheet Temp. controller with safety temperature monitor STFW/VFG(S), STFW/AFT/VFG(S) Construction 1 2 4 5 3 6 7 8 1 Valve VFG(S) 2 2 Valve plug 3 Valve seat 4 Trim 5 Bellow 6 Thermostat 7 Setpoint adjuster 8 Safety spring 9 Temperature sensor 9 Mode of Operation The controllers are proportional controllers and the valves are pressure-balanced. Safety Temperature Monitor (STW) Function STW When reaching the set limit temperature at the temperature sensor (9), the safety temperature monitor interrupts energy supply by closing the valve (1). As soon as the temperature at the temperature sensor drops, the valve is opening automatically. The limit temperature is adjusted at the setpoint adjuster (7) with temperature scale. The setpoint adjuster can be sealed. Extended Safety STW If there is a leakage in the area of the temperature sensor, the connection pipe, or the thermostat, the valve is closed by a pressure spring in the safety thermostat. Physical Function Principle STW The safety thermostat operates in accordance with the liquid expansion principle. The temperature sensor, the connection pipe, and the working element are filled with liquid. As the temperature at the temperature sensor rises, the liquid expands, the working stem of the thermostat is pressed out and the valve VFG(S) 2 is closed. Temperature Controller (TR) Function TR The temperature of a medium is controlled by the temperature controller (TR) in accordance with the adjusted setpoint. The setpoint is adjusted by turning the setpoint adjuster. The setpoint adjuster may be sealed. Physical Function Principle The thermostat operates in accordance with the liquid expansion principle. Temperature sensor, impulse tubes and thermostats are filled with liquid. As soon as the temperature at the temperature sensor risers the liquid expands. The stem of the thermostat is extended and the valve VFG(S) 2 is closed. 4 VD.GA.Q1.02 Danfoss 12/01 SIBC R&D

Data sheet Temp. controller with safety temperature monitor STFW/VFG(S), STFW/AFT/VFG(S) Mounting A strainer must be installed in front of the controller: Nom. diameter DN 15-25 DN 32-65 DN 80-125 Mesh size strainer 0.5 mm 0.8 mm 1.25 The controller may be installed in any position. The sensor must be immersed into the medium by its full length. Select the location of installation in such a way that the highest temperature of the medium is measured directly and without any delay. The setpoint adjusters of the thermostats STFW, AFT may be sealed. For temperatures higher than 120 C, the safety temperature monitor must be secured with a seal. Application example System with temperature controller and safety temperature monitor SIBC R&D VD.GA.Q1.02 Danfoss 12/01 5

Max. Anzug der Über 100 7 6 5 8 =10 C 9 10 11 12 Max. Anzug der Über 100 7 6 8 9 5 =10 C 10 12 11 Data sheet Temp. controller with safety temperature monitor STFW/VFG(S), STFW/AFT/VFG(S) Dimensions L SW36 R1 R1 R1 R1 386 280 386 280 500 280 500 280 386 DIN 2999 R1 386 H 230 ø24 STFW STFW / VFG(S) 2 ø 24 ø 24 ø 30 ø 30 AFT 06 AFT 26 AFT 17 AFT 27 120 180 70 Comb. piece KF2 Valve stem extension ZF4 Valve stem extension ZF 6 DN 15 20 25 32 40 50 65 80 100 125 L (mm) 130 150 160 180 200 230 290 310 350 400 H (mm) 442 442 468 468 470 470 505 505 610 610 6 VD.GA.Q1.02 Danfoss 12/01 SIBC R&D

Data sheet Temp. controller with safety temperature monitor STFW/VFG(S), STFW/AFT/VFG(S) SIBC R&D VD.GA.Q1.02 Danfoss 12/01 7

Data sheet Temp. controller with safety temperature monitor STFW/VFG(S), STFW/AFT/VFG(S) 8 VD.GA.Q1.02 Danfoss 12/01 SIBC R&D

Data sheet Brazed heat exchanger XB06 & Flow-compensated temperature controller IHPT (PN16) Description XB06 The XB is a brazed plate heat exchanger designed for use with district heating systems (i.e. air conditioning, heating, domestic hot water). XB brazed plate heat exchangers are made with several differently sized heat exchange plates. The IHPT is flow-compensated temperature controller with p controller built in developed to control instantaneous heating of domestic hot water by means of heat exchanger. Innovative design enables simple, fast and reliable connection to heat exchanger and most important production of ultra compact and user friendly stations for heating of domestic hot water service. The capacity of controllers fully covers the needs of domestic hot water for flats, one family houses or dwellings and can be mounted to district heating network directly, to a block of heating systems or central located boiler system in a dwelling house. DH-SMT/SI VD.KV.A6.02 Danfoss 04/2012 IHPT The controller is connected to primary heating system as well as cold water system. To avoid risk of leaking from one media to the other the controller is equipped with double sealing. Between both sealings there is a bore to the outside of the valve. In case of leakage from one sealing the media can escape through the bore. Typical system conditions District heating systems with varying supply temperature plus high and varying differential pressure and where a high comfort idle temperature is requested. Idle controller is integrated. Controllers have VA approval. Main data: DN 15 kvs 2.4, 3.0 m3/h PN 16 Setting range: 45... 65 C (see Setting range section) Temperature: Circulation water 2... 120 oc Connections: - Union nut 1

Data sheet XB06 & IHPT (PN 16) Ordering IHPT Controller Picture Example 1: Flow-compensated temperature controller with p controller built in (NO), DN 15, kvs 2.4, PN 16, setting range 45... 65 C, union nut connection - 1 IHPT DN 15 controller Code No: 003L3813 Option: - 1 Housing of sensor stuffing box Code No: 013U8102 1) 2) 3) Setting range 3) ( C) Connection 1) 45 65 Union nut 2.4 15 3.0 Code No. 2) 003L3813 003L3815 to heat exchanger Controller is delivered with thermostatic actuator with standard sensor and M14 sensor stuffing box (housing of sensor stuffing box is not delivered, it is available as an accessory) see Setting range section XB06 & IHPT Example 2: Flow-compensated temperature controller with p controller built in (NO), DN 15, kvs 2.4, PN 16, setting range 45... 65 C, union nut connection & brazed heat exchanger XB06 with 26 plates - 1 Combination DN 15 Code No: 003L3900 kvs (m3/h) DN Picture Type DN kvs Setting range 3) (m3/h) ( C) 15 1) 3) XB 06H-1-36 003L3900 003L3901 003L3902 003L3903 003L3904 003L3905 45 65 3.0 2) XB 06H-1-30 Combination Code No. 2) 2.4 IHPT 1) Heat exchanger type XB 06H-1-26 Controller is delivered with standard sensor and Rp ½ sensor stuffing box incl. housing of sensor stuffing box Code number includes one IHPT and one heat exchanger see Setting range section IHPT & XB06 (II) Picture Type DN kvs Setting range 3) (m3/h) ( C) Heat exchanger type XB 06H-1-16 003L3920 2.4 IHPT 1) 15 45 65 003L3921 3.0 1) 2) 3) Controller is delivered with standard sensor and Rp ½ sensor stuffing box incl. housing of sensor stuffing box Code number includes one IHPT and two heat exchangers see Setting range section Accessories 1) Ser vice kits Type designations Code No. Type designations Code No. Housing of sensor stuffing box 1) 013U8102 Thermostatic actuator with universal sensor 003L3832 Thermostatic actuator with standard sensor 003L3833 Code includes housing and gasket of sensor stuffing box; R ½ M14 1 mm, rubber EPDM Ø 12.6 4 6 mm 1) 2 XB 06H-1-26 Combination Code No. 2) VD.KV.A6.02 Danfoss 04/2012 1) For details see Installation positions section; sensor is delivered with M14 sensor stuffing box DH-SMT/SI

Data sheet XB06 & IHPT (PN 16) Technical data * Nominal diameter * Data for XB06 see relevant Data sheet kvs value of thermostatic controller (kvs,tc) DN 15 2.4 3.0 m3/h kvs value of built in p controller (kvs,dp ) Controlled p on thermostatic controller ( p TC) 5.0 0.16 bar Min. flow rate on primary side (Q1,min) 70 Max. flow rate on primary side (Q1,max) 100 1000 l/h 1200 Min. flow rate on secondary side (Q2,min) 120 Max. rec. flow rate on secondary side (Q2,max) 1400 4) Nominal pressure 16 3) PN Max. differential pressure on primary side 6.0 bar Max. rec. differential pressure on secondary side 1.0 Circulation water / glycolic water up to 30% 1) Medium Domestic hot water (chlorine (cl) content max. 200 ppm) 2) Medium ph Min. 7, max. 10 3) Medium temperature 2... 120 Setting range 45 65 ºC Idle temperature Tset 8 C Max. adm. temperature at sensor 120 Capillary tube length m 0.6 Materials 1) 2) 3) 4) Housings CuZn36Pb2As (CW 602N) Cone and diaphragm support MPPE (Noryl) Main spindle Stainless steel, mat. No. 1.4404 Diaphragm, O-rings EPDM Temperature sensor Copper, mat. No. 2.0090 Valid for primary side Valid for secondary side On primary and secondary side at diff. pressure on secondary side (Δp2 ) 1 bar Classification according to VDI 6003 Type Wash basin 1) Showers 2) IHPT III III 1) 2) Tapping rate changing in steps of 6-12-6 l/min. Tapping rate changing in steps of 9-12-9 l/min. The min. required differential pressure across primary side of the controller is calculated from the formula: Q Δp PRIM,min = PRIM,max k VS,DP Measured for constant supply temperature of 75 C and system differential pressure of 0.5 bar. Secondary side 2 2 + Δp TC = 0.8 + 0.16 2 In graph pressure drop on secondary side in relation to the secondary flow can be seen. * TC - thermostatic controller Quick suggestion: If the max. flow rate on primary side is below 1 m3/h (1000 l/h) always choose kvs = 2.4 m3/h and if it is higher then choose kvs = 3.0 m3/h. DH-SMT/SI VD.KV.A6.02 Danfoss 04/2012 3

Data sheet XB06 & IHPT (PN 16) Setting range Temperature setting depends on application parameters. Values given are approximate. Application scheme Functions Flow-compensated temperature controller with differential pressure controller built in (NO) Typical system conditions District heating systems with varying supply temperature plus high and varying differential pressure and where a high comfort idle temperature is requested. IHPT TC DP QC Idle control alternatives Idle controller is built in. Application principle 4 VD.KV.A6.02 Danfoss 04/2012 DH-SMT/SI

Data sheet XB06 & IHPT (PN 16) Installation positions Temperature controller Controller must be mounted on cold side of heat exchanger (district heating outlet and domestic hot water inlet side). Temperature sensor The standard and universal sensors could be installed in any position. IHPT controller is delivered with standard sensor. Universal sensor should be used when controller might reach sensor temperature. Standard sensor The sensor must always be placed warmer than the controller. Universal sensor There is no limitation regarding sensor / controller temperature relation. Warning: If there might be possibility that controller housing reaches the sensor temperature then universal sensor is strongly recommended. Sizing Example Instantaneous domestic hot water production requires primary flow of 800 l/h. Minimum system differential pressure is 0.8 bar. Select controller acc. to technical data, page 3, with the smallest possible kvs value considering available flow ranges: Given data: QPRIM, max = 0.8 m3/h (800 l/h) Δpsyst, min = 0.8 bar (80 kpa) Δpexchanger = 0.1 bar (10 kpa) The other relevant data for this controller are: kvs, DP = 5.0 m3/h Δp TC = 0.16 bar (16 kpa) The total (available) pressure loss across the primary side of the controller is: The min. required differential pressure across primary side of the selected controller is calculated from the formula: kvs, TC = 2.4 m3/h ΔpPRIM,A = Δpsyst,min - Δpexchanger = 0.8-0.1 Q Δp PRIM,min PRIM,max k VS,DP ΔpPRIM,A = 0.7 bar (70 kpa) Possible pipe pressure losses in tubes, shut-off fittings, heatmeters, etc. are not included. 2 2 Δp TC 0.8 0.16 5 ΔpPRIM,min = 0.19 bar (19 kpa) ΔpPRIM,A > ΔpPRIM,min 0.7 bar > 0.19 bar ΔpPRIM, MIN Δpsyst,min IHPT TC DP Δpexchanger ΔpTC QC DH-SMT/SI VD.KV.A6.02 Danfoss 04/2012 5

Data sheet XB06 & IHPT (PN 16) Design 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. Secondary side cone (QC) Moving seat Main body O-ring Differential pressure cone (DP) Main spindle Primary side cone (TC) Stuffing box Thermostat Handle for temperature setting Secondary side body Circulation connection plug (3/8 ) Temperature sensor Idle controller connection plug (1/4 ) Differential pressure moving seat Washer of sensor stuffing box Gasket of sensor stuffing box Sealing bolt of sensor stuffing box Primary side body Housing of sensor stuffing box Function The controller has three main functions that can be mounted in the controller based on application demands: QC Proportional flow controller TC Thermostatic controller DP Differential pressure controller TC DP QC To minimise the risk of calcium deposits on cold water side and sensitivity to high temperatures the controller is mounted on cold side of heat exchanger (district heating outlet and domestic hot water inlet side). In standard applications at standard conditions with Danfoss heat exchanger XB 06 primary return temperature is below 30 C. 6 VD.KV.A6.02 Danfoss 04/2012 DH-SMT/SI

Data sheet XB06 & IHPT (PN 16) Function (continuous) Flow-compensated temperature controller IHPT with integrated differential pressure controller Flow-compensated temperature controller IHPT with integrated differential pressure controller When tapping starts, cold water flows into secondary side of controller ① passes the secondary side cone (QC) ②, leaves the controller ③ and enters the heat exchanger. The pressure drop generated on the orifice is transferred to the diaphragm ④ which transfers the force to the spring ⑫. This results in moving of the main spindle ⑤ to the right which opens the primary side cone ⑥. The opening results in primary flow entering into controller ⑦, passing integrated differential pressure controller (DP) ⑧, primary side cone (TC) ⑥ and leaving controller ⑨. The temperature sensor ⑩, mounted to the secondary hot water side is sensing the temperature. If the temperature is deviating from setting temperature the thermostatic element ⑬ will move (open/close) primary side cone ⑥ until desired temperature is reached. Not to influence on tapping flow from thermostatic adjustments the spring ⑫ is mounted between main spindle ⑤ and diaphragm which can be compressed when needed. DH-SMT/SI VD.KV.A6.02 Danfoss 04/2012 When no load (no flow on secondary side) the controller mantains constant temperature in the heat exchanger few degrees below adjusted temperature. The differential pressure controller ⑧ controls the pressure over control valve and therefore enables 100 % authority of the controller in all conditions. By rotating the handle for temperature setting ⑬ the temperature of tapping flow can be adjusted. Domestic hot water circulation ⑪ connections are placed directly on the controller and therefore minimize the costs for mounting and optimize space for the piping. 7

Data sheet XB06 & IHPT (PN 16) Settings Temperature setting Temperature setting is adjusted with handle for temperature setting. By turning it in (+) direction the setting is increased, by turning it in (-) direction the setting is decreased. Mounting specifics Connections to heat exchanger Connections to standard threaded heat exchanger connections, which have distance between them 45 mm are done with union nuts. In order to cover the tolerances of heat exchanger production special union nuts were developed which can tolerate dimensions of 45 ± 1.5 mm. In this case standard fittings should be used on hot side of heat exchanger. 8 VD.KV.A6.02 Danfoss 04/2012 Connections to pipes For connecting controller to the station ¾ connections are used. DH-SMT/SI

Data sheet XB06 & IHPT (PN 16) Dimensions DH-SMT/SI VD.KV.A6.02 Danfoss 04/2012 9

Data sheet XB06 & IHPT (PN 16) 10 VD.KV.A6.02 Danfoss 04/2012 DH-SMT/SI

Data sheet XB06 & IHPT (PN 16) 11 VD.KV.A6.02 Danfoss 04/2012 DH-SMT/SI

Data sheet XB06 & IHPT (PN 16) 12 VD.KV.A6.02 Produced by Danfoss A/S 04/2012

Data sheet Temperature controller for heating (PN 25) AVT / VG - external thread AVT / VGF - flange Description AVT / VG AVT / VGF The AVT / VG(F) controller is a self-acting proportional temperature controller developed primarily for domestic hot water (DHW) production: - Hot water tanks - Storage charge systems - Instantaneous domestic hot water production (AVT 255 mm version) It can be used in mixing loops and room heating systems as well. Controller closes on rising temperature. The controller has a control valve VG(F), thermostatic actuator and handle for temperature setting. Thermostatic actuator consist of bellows, capillary tube and sensor. The temperature controller is type-tested according to EN 14597 and can be used in combinations with safety temperature monitors STM and safety temperature limiters STL. Main data: DN 15-50 k VS 0,4-25 m 3 /h PN 25 Setting ranges: 10 40 C / 20 70 C / 40 90 C / 60 110 C and 10 45 C / 35 70 C / 60 100 C / 85 125 C Temperature: - Circ. water / glycolic water up to 30 %: 2 150 C Connections: - Ext. thread (weld-on, thread and flange tailpieces) - Flange Flow and return mounting. Ordering VG, VGF valve Example: Temperature controller, DN 15; k VS 1,6; PN 25; setting range 40 90 C; T max 150 C; ext. thread - 1 VG DN 15 valve Code No: 065B0772-1 AVT thermostatic actuator, 40 90 C Code No: 065-0598 Option: - 1 Weld-on tailpieces Code No: 003H6908 Picture DN k VS (mm) (m 3 /h) Connection Code No. 0,4 065B0770 1,0 065B0771 15 1,6 G ¾ A 065B0772 2,5 065B0773 4,0 Cylindrical external thread acc. to 065B0774 20 6,3 ISO 228 / 1 G 1 A 065B0775 25 8,0 G 1¼ A 065B0776 32 12,5 G 1¾ A 065B0777 40 16 G 2 A 065B0778 50 20 G 2½ A 065B0779 15 4,0 065B0780 20 6,3 065B0781 25 8,0 065B0782 Flanges PN 25, acc. to EN 1092-2 32 12,5 065B0783 40 20 065B0784 50 25 065B0785 DEN-SMT/SI VD.JK.A3.02 Danfoss 04/2013 1

Data sheet Temperature controller AVT / VG(F) (PN 25) Ordering (continuous) AVT thermostatic actuator Picture 1) conic male thread EN 10226 2) without immersion pocket For valves DN 15-25 DN 32-50 DN 15-50 Setting range ( C) 10 +40 Temperature sensor with brass immersion pocket, length, connection Code No. 065-0596 20 70 065-0597 170 mm, R ½ 1) 40 90 065-0598 60 110 065-0599 10 +40 065-0600 20 70 065-0601 210 mm, R ¾ 1) 40 90 065-0602 60 110 065-0603 10 45 065-0604 35 70 065-0605 60 100 1) 2) 255 mm, R ¾ 065-0606 85 125 065-0607 Accessories for valves Picture Type designation DN Connection Code No. 15 003H6908 20 003H6909 Weld-on tailpieces 25 003H6910-32 003H6911 40 003H6912 50 003H6913 15 R ½ 003H6902 20 R ¾ 003H6903 External thread tailpieces 25 Conical ext. thread acc. to EN R 1 003H6904 32 10226-1 R 1¼ 003H6905 40 R 1½ 065F6061 50 R 2 065F6062 15 003H6915 Flange tailpieces 20 Flanges PN 25, acc. to EN 1092-2 003H6916 25 003H6917 Accessories for thermostats Picture Type designation PN For valves Material Code No. Immersion pocket 25 DN 15-25 Brass 065-4414 1) Stainless steel, mat. No. 1.4571 065-4415 1) DN 32-50 Brass 065-4416 1) Stainless steel, mat. No. 1.4435 065-4417 1) Combination piece K2 003H6855 Combination piece K3 003H6856 1) Not for AVT thermostatic actuator code numbers: 065-0604, 065-0605, 065-0606, 065-0607 Service kits Picture Type designation DN (mm) k VS (m 3 /h) Code No. 0,4 003H6869 1,0 003H6870 15 1,6 003H6871 Valve insert 2,5 003H6872 4,0 003H6873 20 6,3 003H6874 25 8,0 003H6875 32 / 40 / 50 125 / 16 / 20 / 25 003H6876 for sensors Code No. Housing of sensor stuffing box AVT R ½ 065-4420 AVT R ¾ 065-4421 2 VD.JK.A3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT / VG(F) (PN 25) Technical data Valves Nominal diameter DN 15 20 25 32 40 50 k VS value m 3 /h 0,4 1,0 1,6 2,5 4,0 6,3 8 12.5 16 / 20 1) 20 / 25 1) Stroke mm 3 5 10 Control ratio > 1:50 Control characteristic Cavitation factor z 0,6 0,55 0,5 Leakage acc. to standard IEC 534 % of k VS 0,02 0,05 Nominal pressure PN 25 Max. differential pressure bar 20 16 linear Medium Circulation water / glycolic water up to 30% Medium ph Min. 7, max. 10 Medium temperature C 2 150 Connections Materials Valve body valve tailpieces thread External thread - Flange Weld-on and external thread Flange - Red bronze CuSn5ZnPb (Rg5) Ductile iron EN-GJS-400-18-LT (GGG 40.3) flange - Ductile iron EN-GJS-400-18-LT (GGG 40.3) Valve seat Stainless steel, mat. No. 1.4571 Valve cone Sealing Dezincing free brass CuZn36Pb2As EPDM Pressure relieve system Piston 1) Flange valve body Thermostatic actuator Setting range X s C 10 40 / 20 70 / 40 90 / 60 110 10 45 / 35 70 / 60 100 / 85 125 Time constant T acc. to EN 14597 s max. 50 (170 mm, 210 mm), max. 30 (255 mm) Gain K s mm / K 0,2 (170 mm), 0,3 (210 mm), 0,7 (255 mm) Max. adm. temperature at sensor 50 C above maximum setpoint Max. amb. temperature at sensor C 0 70 Nominal pressure sensor Nominal pressure immersion pocket Capillary tube length Materials Temperature sensor PN 25 5 m (170 mm, 210 mm), 4 m (255 mm) Cooper Ms design Brass, nickel-plated Immersion pocket 1) Stainless steel design Mat. No. 1.4571 (170 mm), mat. No. 1.4435 (210 mm) Handle for temp. setting Scale carrier 1) for sensor 170 and 210 mm Polyamide, glass fiber-reinforced Polyamide Application principles DEN-SMT/SI VD.JK.A3.02 Danfoss 04/2013 3

Data sheet Temperature controller AVT / VG(F) (PN 25) Combinations Example: Temperature controller with safety temperature monitor, DN 15; k VS 1,6; PN 25; setting range 40 90 C; T max 150 C; ext. thread - 1 VG DN 15 valve Code No: 065B0772-1 AVT thermostatic actuator, 40 90 C Code No: 065-0598 - 1 STM thermostat, 30 110 C Code No: 065-0608 - 1 K2 combination piece Code No: 003H6855 Products will be delivereed separatly Note: For safety temperature monitor STM / VG(F) data and safety temperature limiter STLV data see relevant data sheet. AVT / VG - temperature controller AVT / AVT / VG - two temperature controllers STM / AVT / VG - temperature controller with safety temperature monitor STM / AVT / AVT / VG - two temperature controllers with safety temperature monitor Installation positions Temperature controller Temperature controller AVT / VG(F) can be installed in any position. 4 VD.JK.A3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT / VG(F) (PN 25) Installation positions (continuous) Temperature sensor The place of installation must be chosen in a way that the temperature of the medium is directly taken without any delay. Avoid overheating of temperature sensor. The temperature sensor must be immersed into the medium in its full length. Temperature sensors 170 mm R ½ and 210 mm R ¾ - The temperature sensor may be installed in any position. Temperature sensor 255 mm R ¾ - The temperature sensor must be installed as shown on the picture. Pressure temperature diagram EN-GJS-400-18-LT (GGG 40.3) PN 25 CuSn5ZnPb (Rg5) PN 25 working area Maximum allowed operating pressure as a function of medium temperature (according to EN 1092-2 and EN 1092-3). DEN-SMT/SI VD.JK.A3.02 Danfoss 04/2013 5

Data sheet Temperature controller AVT / VG(F) (PN 25) Valve sizing Given data: P max = 14 kw t = 20 K p v = 0,15 bar P max - heating power (kw) t -temperature difference (K) p v - differential pressure across the valve Maximum flow Q max (m 3 /h) through the valve is calculated according to formula: P max 0, 8 6 14 0,86 Qmax t 20 Q max = 0,6 m 3 /h k v value is calculated according to formula: Qmax 0, 6 k v p 0, 1 5 V k v = 1,5 m 3 /h Chosen k VS = 1,6 m 3 /h or read from the sizing diagram by taking a line through Q scale (0,6 m 3 /h) and p v scale (0,15 bar) to intersect k v -scale at 1,5 m 3 /h Chosen k VS = 1,6 m 3 /h Solution: The example selects 1) ext. thread valve VG DN 15, k VS value 1,6 or 2) flange valve VGF DN 15, k VS value 1,6 6 VD.JK.A3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT / VG(F) (PN 25) Design 1. Valve VG(F) 2. Valve insert 3. Pressure relieved valve cone 4. Valve stem 5. Union nut 6. Thermostatic actuator AVT 7. Thermostat stem 8. Bellows 9. Setting spring for temperature control 10. Handle for temperature setting, prepared for sealing 11. Scale carrier 12. Capillary tube 13. Flexible protected pipe (only at AVT 255 mm) 14. Temperature sensor 15. Immersion pocket 16. Sensor stuffing box 17. Housing of sensor stuffing box AVT 255 AVT 170 AVT 210 Function Medium temperature changes cause pressure changes in temperature sensor. Resulting pressure is being transferred through the capillary tube to the bellows. Bellows moves thermostat stem and opens or closes the valve. By increasing of medium temperature valve cone moves towards the seat (valve closes), by decreasing of medium temperature valve cone moves away from the seat (valve opens). Handle for temperature setting can be sealed. Settings Temperature setting Temperature setting is being done by the adjustment of the setting spring for temperature control. The adjustment can be done by means of handle for temperature setting and/or temperature indicators. Adjustment diagram Temperature setting Relation between scale numbers 1-5 and closing temperature. Note: The values given are approximate AVT Thermostat... 170 mm, 210 mm AVT Thermostat... 255 mm DEN-SMT/SI VD.JK.A3.02 Danfoss 04/2013 7

Data sheet Temperature controller AVT / VG(F) (PN 25) Dimensions L 1 L H 2 H H H 1 H 2 H 3 L L L H 2 H 1 H H 1 H 2 H 2 H H 150 Ø 76 AVT DN L L 1 H H 1 H 2 H 3 mm 15 65 130 180 229 34 47 20 70 150 180 229 34 52 25 75 160 180 229 37 57 32 100 180 221 221 62 70 40 110 200 221 221 62 75 50 130 230 221 221 62 82 Note: other flange dimensions - see table for tailpieces Type Weight sensor 170 mm 1,3 sensor 210 mm kg 1,5 sensor 255 mm 1,6 L H 1 H 1 VG DN 15-25 VG DN 32-50 VGF DN 15-25 VGF DN 32-50 VG DN L H H1 H2 Weight (kg) mm 15 65 80 34 46 0,7 20 70 80 34 46 0,8 25 75 83 37 46 0,9 32 100 151 63 88 3,0 40 110 151 63 88 3,1 50 130 151 63 88 3,8 VGF DN L H H1 H2 Weight (kg) mm 15 130 144 48 96 3,3 20 150 149 53 96 4,1 25 160 154 58 96 4,7 32 180 158 70 88 7,5 40 200 163 75 88 9,0 50 230 171 83 88 11,1 Note: other flange dimensions - see table for tailpieces 8 VD.JK.A3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT / VG(F) (PN 25) Dimensions (continuous) L 1 d 2 L 3 L 2 SW 25 (R ½) SW 27 (R ¾) M 20 1 (R ½) M 22 1 (R ¾) d R k DN R 1) SW d L 1 2) L 2 L 3 k d 2 n mm 15 1/2 32 (G 3/4A) 21 130 131 139 65 14 4 20 3/4 41 (G 1A) 26 150 144 154 75 14 4 25 1 50 (G 11/4A) 33 160 160 159 85 14 4 32 11/4 63 (G 1¾A) 42-177 184 100 18 4 40 1 1/2 70 (G 2A) 47-195 204 110 18 4 50 2 82 (G 2½A) 60-252 234 125 18 4 1) Conical ext. thread acc. to EN 10226-1 2) Flanges PN 25, acc. to EN 1092-2 Ø 16 Ø 19 Ø 16 Ø 9,5 Ø 12 174 170 223 215 266 SW 17 M14 1 6 SW 22 R ½ SW 22 M22 1 10 SW 27 R ¾ SW 22 R ¾ AVT 170 AVT 170 Immersion pocket AVT 210 AVT 210 Immersion pocket AVT 255 85 108 R ½; R ¾ 26 (R ½) 30 (R ¾) 109 109 Housing of sensor stuffing box Combination piece K2 Combination piece K3 DEN-SMT/SI VD.JK.A3.02 Danfoss 04/2013 9

Data sheet Temperature controller AVT / VG(F) (PN 25) 10 VD.JK.A3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT / VG(F) (PN 25) DEN-SMT/SI VD.JK.A3.02 Danfoss 04/2013 11

Data sheet Temperature controller AVT / VG(F) (PN 25) 12 VD.JK.A3.02 Produced by Danfoss A/S 04/2013

Data sheet Temperature controller for steam (PN 25) AVT / VGS - external thread Description The controller has a control valve VGS, thermostatic actuator and handle for temperature setting. Thermostatic actuator consist of bellows, capillary tube and sensor. The temperature controller is type-tested according to EN 14597 and can be used in combinations with safety temperature monitors STM and safety temperature limiters STL. The AVT / VGS controller is a self-acting proportional temperature controller developed primarily for steam or hot water applications for temperatures up to 200 C. Controller closes on rising temperature. Main data: DN 15-25 k VS 1,0-6,3 m 3 /h PN 25 Setting ranges: 10 40 C/20 70 C/40 90 C/60 110 C and 10 45 C/35 70 C/60 100 C/85 125 C Temperature: - Steam/circ. water/glycolic water up to 30 %: 2 200 C Connections: - Ext. thread (weld-on, thread and flange tailpieces) - Flow and return mounting. Ordering Example: Temperature controller for steam, DN 15; k VS 1,6; PN 25; setting range 40 90 C; T max 200 C; ext. thread - 1 VGS DN 15 valve Code No: 065B0787-1 AVT thermostatic actuator, 40 90 C Code No: 065-0602 VGS Valve 1) Picture DN k VS Connection Code No. (mm) (m 3 /h) 1,0 065B0786 15 1,6 G ¾ A 065B0787 Cylindrical external thread acc. to 3,2 065B0788 ISO 228/1 20 4,5 G 1 A 065B0789 25 6,3 G 1¼ A 065B0790 1) Adapter M34 M45 for connection to AVT thermostat is factory assembled on the valve. (info: Adapter M34 M30 for connection to AMV(E) electrical actuators is part of the valve delivery too.) Option: - 1 Weld-on tailpieces Code No: 003H6908 The valve will be delivered (assembled) together with an adapter M34 M45. AVT Thermostatic actuator Picture For valves DN 15-25 1) conic male thread EN 10226-1 2) without immersion pocket Setting range ( C) 10 +40 Temperature sensor with brass immersion pocket, length, connection Code No. 065-0600 20 70 065-0601 40 90 210 mm, R ¾ 1) 065-0602 60 110 065-0603 10 45 065-0604 35 70 065-0605 60 100 1) 2) 255 mm, R ¾ 065-0606 85 125 065-0607 DEN-SMT/SI VD.JK.C3.02 Danfoss 02/2013 1

Data sheet Temperature controller for steam AVT/VGS (PN 25) Ordering (continuous) Accessories for valves Picture Type designation DN Connection Code No. 15 003H6908 Weld-on tailpieces 20-003H6909 25 003H6910 15 R ½ 003H6902 External thread tailpieces 20 Conical ext. thread acc. to EN 10226-1 R ¾ 003H6903 25 R 1 003H6904 15 003H6915 Flange tailpieces 20 Flanges PN 25, acc. to EN 1092-2 003H6916 Accessories for thermostats 25 003H6917 Picture Type designation PN Material Code No. Brass 065-4416 1) Immersion pocket 25 Stainless steel, mat. No. 1.4435 065-4417 1) Adapter 2) M34 1,5 mm / M45 1,5 mm 003H6927 Combination piece K2 Combination piece K3 003H6855 003H6856 1) Not for AVT thermostatic actuator code numbers: 065-0604, 065-0605, 065-0606, 065-0607 2) Adapter for VGS combinations with thermostatic actuators AVT, temperature monitors STM and temperature limiters STL Service kits Picture Type designation for valves DN k VS Code No. Valve body extension with stuffing box Housing of sensor stuffing box 15 3,2 20 4,5 25 6,3 for sensors 003H6877 Code No. AVT R ¾ 065-4421 2 VD.JK.C3.02 Danfoss 02/2013 DEN-SMT/SI

Data sheet Temperature controller for steam AVT/VGS (PN 25) Technical data Valves Nominal diameter DN 15 20 25 k VS value m 3 /h 1,0 1,6 3,2 4,5 6,3 Stroke mm 3 5 Control ratio >1:50 Control characteristic linear Cavitation factor z 0,6 0,55 Leakage acc. to standard IEC 534 % of k VS 0,05 Nominal pressure PN 25 Max. differential pressure bar 10 Medium Steam / Circulation water / glycolic water up to 30 % Medium ph Min. 7, max. 10 Medium temperature C 2 200 Connections valve External thread tailpieces Weld-on, external thread and flange Materials Valve body Red bronze CuSn5ZnPb (Rg5) Valve seat Stainless steel, mat. No. 1.4571 Valve cone Stainless steel, mat. No. 1.4122 Presure relieve system Bellows Thermostatic actuator Setting range X s C 10 40/20 70/40 90/60 110 10 45/35 70/60 100/85 125 Time constant T acc. to EN 14597 s max. 50 (210 mm), max. 30 (255 mm) Gain K s mm/ K 0,3 (210 mm), 0,7 (255 mm) Max. adm. temperature at sensor 50 C above maximum setpoint Max. amb. temperature at thermostat C 0 70 Nominal pressure sensor Nominal pressure immersion pocket Capillary tube length Materials Temperature sensor PN 25 5 m (210 mm), 4 m (255 mm) Cooper Ms design Brass, nickel-plated Immersion pocket 1) Stainless steel design Mat. No. 1.4435 (210 mm) Handle for temp. setting Scale carrier 1) for sensor 210 mm Polyamide, glass fiber-reinforced Polyamide Application principles DEN-SMT/SI VD.JK.C3.02 Danfoss 02/2013 3

Data sheet Temperature controller for steam AVT/VGS (PN 25) Combinations Example: Temperature controller with safety temperature monitor for steam, DN 15, k VS 1,6, PN 25, setting range 40 90 C, T max 200 C, ext. thread - 1 VGS DN 15 valve Code No: 065B0787-1 AVT thermostatic actuator, 40 90 C Code No: 065-0602 - 1 STM thermostat, 30 110 C Code No: 065-0608 - 1 K2 combination piece Code No: 003H6855 Products will be delivered seperatly. Note: For safety temperature monitor STM / VGS data and safety temperature limiter STLS data see relevant data sheet AVT / VGS - temperature controller AVT / AVT / VGS - two temperature controllers STM / AVT / VGS - temperature controller with safety temperature monitor for steam STM / AVT / AVT / VGS - two temperature controllers with safety temperature monitor for steam Installation positions Temperature controller Up to medium temperature of 160 C the controllers AVT / VGS can be installed in any position. For higher temperatures the controllers AVT / VGS have to be installed horizontal and in horizontal pipes with the actuator oriented downwards. 4 VD.JK.C3.02 Danfoss 02/2013 DEN-SMT/SI

Data sheet Temperature controller for steam AVT/VGS (PN 25) Installation positions (continuous) Temperature sensor The place of installation must be chosen in a way that the temperature of the medium is directly taken without any delay. Avoid overheating of temperature sensor. The temperature sensor must be immersed into the medium in its full length. Temperature sensor 210 mm R¾ : - The temperature sensor may be installed in any position. Temperature sensor 255 mm R¾ : - The temperature sensor must be installed as shown on the picture. Pressure temperature diagram CuSn5ZnPb (Rg5) PN 25 working area Maximum allowed operating pressure as a function of medium temperature (according to EN 1092-3). DEN-SMT/SI VD.JK.C3.02 Danfoss 02/2013 5

Data sheet Temperature controller for steam AVT/VGS (PN 25) Valve sizing Steam valve sizing is based on 40 % drop of the steam pressure across the valve when fully open. At this condition the steam is travelling at or close to its critical velocity (approx. 300 m/s) and throttling would occur over the full valve stroke. If the steam is travelling slower than this, then the first part of the valve stroke would merely increase the velocity of the steam without reducing the volumetric flow. 6 VD.JK.C3.02 Danfoss 02/2013 DEN-SMT/SI

Data sheet Temperature controller for steam AVT/VGS (PN 25) Valve sizing (continuous) 1. For saturated steam Given data: Flow rate: 70 kg/h Absolute inlet pressure: 5 bar (500 kpa) Remark: For this example follow dashed line The absolute inlet pressure is 500 kpa. Critical pressure drop (40 % of 500 kpa) is 200 kpa. Locate the diagonal line corresponding to the pressure drop of 200 kpa (line A-A). Read the absolute inlet pressure on the lower left hand scale (point B), and draw a horizontal line across until it meets the pressure drop diagonal A-A at point C. From this point C extend a vertical line upwards until it meets the horizontal line representing the steam flow of 70 kg/h from point D. The intersection of this is point E. The nearest diagonal k VS line above this is line F-F with a k VS of 1,6. If the ideal valve size is not available the next largest size should be selected to ensure design flow. The pressure drop through valve at the flow rate is found by the intersection of the 70 kg/h line with F-F (point E ) and dropping a vertical line downwards; this actually hits the horizontal line for 500 kpa absolute inlet pressure (point E ) at a pressure drop diagonal of 90 kpa. This is only 18 % of the pressure drop accross the valve and the control quality will not be good until the valve has partially closed. As with all steam valves this compromise is necessary since the next smaller valve would not pass the required flow (maximum flow would be about 60 kg/h; point P). The maximum flow for the same inlet pressure is found by extending the vertical line (C-E) through point E until it crosses the k VS 1,6 line F-F (point G) and reading off the flow (90 kg/h). 2. For superheated steam Given data: Flow rate: 170 kg/h Absolute inlet pressure: 5 bar (500 kpa) Steam temperature: 190 C Remark: For this example follow dotted line The procedure for superheated steam is much the same as for saturated steam, but uses a different flow scale which slightly elevates the readings according to the degree of superheat. As before, the diagonal critical pressure drop line A-A is located at 40 % of 500 kpa (200 kpa). The horizontal inlet pressure line through point B is now extended to the left to read off the corresponding saturated steam temperature at point H (150 C). The difference between the saturated steam temperature and the superheated steam temperature is 190 C 150 C = 40 C (see point J). The superheated steam flow 170 kg/h is found on the upper right hand scale (point K). From here the diagonal line is followed down until it meets a vertical line from the steam temperature elevation (40 C, point J) at point L. As before, the horizontal line through point B is drawn to cut line A-A at point C. The point where the vertical line from point C meets the horizontal line from point L is the operating point (point M). This horizontal line, L-M, is the corrected flow line. The nearest diagonal line above this is line N-N with a k VS 3,2. A vertical line dropped from the intersection of L-M line with line N-N (point M ) intersects the 500 kpa absolute inlet pressure line (point M ) at a pressure drop diagonal of about 150 kpa. This is about 30 % of the pressure drop accross the valve which will give reasonable control quality (compared to recommended ratio of 40 %). DEN-SMT/SI VD.JK.C3.02 Danfoss 02/2013 7

Data sheet Temperature controller for steam AVT/VGS (PN 25) Design 1. Valve VGS 2. Valve insert 3. Pressure relieved valve cone 4. Valve stem 5. Valve body extension 6. Union nut 7. Thermostatic actuator AVT 8. Thermostat stem 9. Bellows 10. Setting spring for temperature control 11. Handle for temperature setting, prepared for sealing 12. Scale carrier 13. Capillary tube 14. Flexible protected pipe (only at AVT 255 mm) 15. Temperature sensor 16. Immersion pocket 17. Sensor stuffing box 18. Housing of sensor stuffing box AVT 255 AVT 210 Function Medium temperature changes cause pressure changes in temperature sensor. Resulting pressure is being transferred through the capillary tube to the bellows. Bellows moves thermostat stem and opens or closes the valve. By increasing of medium temperature valve cone moves towards the seat (valve closes), by decreasing of medium temperature valve cone moves away from the seat (valve opens). Handle for temperature setting can be sealed. Settings Temperature setting Temperature setting is being done by the adjustment of the setting spring for temperature control. The adjustment can be done by means of handle for temperature setting and/or temperature indicators. Adjustment diagram Temperature setting Relation between scale numbers 1-5 and closing temperature. Note: The values given are approximate AVT Thermostat... 210 mm AVT Thermostat... 255 mm Note: STM Safety temperature monitor (actuator): temperature scale is already written on the product 8 VD.JK.C3.02 Danfoss 02/2013 DEN-SMT/SI

Data sheet Temperature controller for steam AVT/VGS (PN 25) Dimensions L 223 H H 2 Ø 16 Ø 19 Ø 16 10 215 266 H 150 Ø 76 AVT / VGS DN L H H2 mm 15 65 257 34 20 70 257 34 25 75 257 37 VGS DN H (mm) Weight (kg) 15 178 1,3 20 178 1,4 25 178 1,6 AVT Type Weight sensor 210 mm 1,5 kg sensor 255 mm 1,6 SW 22 M22 1 SW 27 R ¾ SW 22 R ¾ AVT 210 AVT 210 Immersion pocket AVT 255 DEN-SMT/SI VD.JK.C3.02 Danfoss 02/2013 9

Data sheet Temperature controller for steam AVT/VGS (PN 25) Dimensions (continuous) L 1 d 2 L 3 L 2 n d R k SW SW SW 45 DN R 1) SW d L 1 2) L 2 L 3 k d 2 n mm 15 1/2 32 (G 3/4A) 21 130 131 139 65 14 4 20 3/4 41 (G 1A) 26 150 144 154 75 14 4 25 1 50 (G 11/4A) 33 160 160 159 85 14 4 1) Conical ext. thread acc. to EN 10226-1 2) Flanges PN 25, acc. to EN 1092-2 SW 27 M22 1 85 108 M34 R ¾ 30 109 109 Housing of sensor stuffing box Combination piece K2 Combination piece K3 M45 Adapter M34 1,5 mm / M45 1,5 mm 10 VD.JK.C3.02 Danfoss 02/2013 DEN-SMT/SI

Data sheet Temperature controller for steam AVT/VGS (PN 25) DEN-SMT/SI VD.JK.C3.02 Danfoss 02/2013 11

Data sheet Temperature controller for steam AVT/VGS (PN 25) 12 VD.JK.C3.02 Produced by Danfoss A/S 02/2013

Data sheet Temperature controller for cooling (NC) (PN 25) AVT / VGU AVT / VGUF - external thread - flange Description AVT / VGUF The AVT / VGU(F) is a self-acting proportional temperature controller developed primarily for cooling applications. Controller opens on rising temperature. The controller has a control valve VGU(F), thermostatic actuator and handle for temperature setting. Thermostatic actuator consist of bellows, capillary tube and sensor. AVT / VGU Main data: DN 15-50 k VS 4,0-25 m 3 /h PN 25 Setting ranges: 10 40 C / 20 70 C / 40 90 C / 60 110 C Temperature: - Circ. water / glycolic water up to 30%: 2 150 C Connections: - Ext. thread (weld-on, thread and flange tailpieces) - Flange Flow and return mounting. Ordering Example: Temperature controller for cooling, DN 15; k VS 4,0; PN 25; setting range 10 40 C; T max 150 C; ext. thread - 1 VGU DN 15 valve Code No: 065B0791-1 AVT thermostatic actuator, 10 40 C Code No: 065-0596 Option: - 1 Weld-on tailpieces Code No: 003H6908 VGU, VGUF valve Picture DN k VS (mm) (m 3 /h) Connection Code No. 15 4,0 G ¾ A 065B0791 20 6,3 G 1 A 065B0792 25 8,0 Cylindrical external thread acc. to G 1¼ A 065B0793 32 12,5 ISO 228/1 G 1¾ A 065B0794 40 16 G 2 A 065B0795 50 20 G 2½ A 065B0796 32 12,5 065B0797 40 20 Flanges PN 25, acc. to EN 1092-2 065B0798 50 25 065B0799 DEN-SMT/SI VD.JK.B3.02 Danfoss 04/2013 1

Data sheet Temperature controller AVT / VGU(F) (PN 25) Ordering (continuous) AVT thermostatic actuator Picture For valves DN 15-25 DN 32-50 DN 15-50 Setting range ( C) 10 +40 Temperature sensor with brass immersion pocket, length, connection Code No. 065-0596 20 70 065-0597 40 90 170 mm, R ½ 1) 065-0598 60 110 065-0599 10 +40 065-0600 20 70 065-0601 40 90 210 mm, R ¾ 1) 065-0602 60 110 065-0603 10 45 1) conic male thread EN 10226 2) without immersion pocket 3) setting range is for aprox. 5-10 C higher as stated (see Adjustment diagram section) 065-0604 35 70 065-0605 60 100 1) 2) 3) 255 mm, R ¾ 065-0606 85 125 065-0607 Accessories for valves Picture Type designation DN Connection Code No. 15 003H6908 20 003H6909 Weld-on tailpieces 25 003H6910-32 003H6911 40 003H6912 50 003H6913 15 R ½ 003H6902 20 R ¾ 003H6903 External thread tailpieces 25 Conical ext. thread acc. to EN R 1 003H6904 32 10226-1 R 1¼ 003H6905 40 R 1½ 065F6061 50 R 2 065F6062 15 003H6915 Flange tailpieces 20 Flanges PN 25, acc. to EN 1092-2 003H6916 25 003H6917 Adapter 1) M45 1,5 mm / M30 1,5 mm 003H6928 1) Adapter for VGU(F) combinations with electrical actuators type AMV(E) 20, 23, 30, 33. Accessories for thermostats Picture Type designation PN For valves Material Code No. Brass 065-4414 1) DN 15-25 Stainless steel, mat. No. 1.4571 065-4415 1) Immersion pocket 25 Brass 065-4416 1) DN 32-50 Stainless steel, mat. No. 1.4435 065-4417 1) 1) Not for AVT thermostatic actuator code number: 065-0604, 065-0605, 065-0606, 065-0607 Service kits Picture Type designation for sensors Code No. Housing of sensor stuffing box AVT R ½ 065-4420 AVT R ¾ 065-4421 2 VD.JK.B3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT / VGU(F) (PN 25) Technical data Valves Nominal diameter DN 15 20 25 32 40 50 k VS value m 3 /h 4,0 6,3 8,0 12,5 20 25 Stroke mm 5 Control ratio >1:50 Control characteristic Cavitation factor z 0,6 0,55 0,5 linear Leakage acc. to standard IEC 534 % of k VS 0,02 0,05 Nominal pressure PN 25 Max. differential pressure bar 20 16 Medium Circulation water / glycolic water up to 30% Medium ph Min. 7, max. 10 Medium temperature C 2 150 Connections Materials Valve body valve External thread External thread and flange tailpieces Weld-on and external thread Flange - Red bronze CuSn5ZnPb (Rg5) Valve seat Stainless steel, mat. No. 1.4571 Valve cone Sealing Pressure relieve system Dezincing free brass CuZn36Pb2As EPDM Piston Ductile iron EN-GJS-400-18-LT (GGG 40.3) Thermostatic actuator Setting range X s C 10 40 / 20 70 / 40 90 / 60 110 10 45 / 35 70 / 60 100 / 85 125 Time constant T acc. to EN 14597 s max. 50 (170 mm, 210 mm), max. 30 (255 mm) Gain K s mm / K 0,2 (170 mm), 0,3 (210 mm), 0,7 (255 mm) Max. adm. temperature at sensor 50 C above maximum setpoint Max. amb. temperature at sensor C 0 70 Nominal pressure sensor Nominal pressure immersion pocket Capillary tube length Materials Temperature sensor PN 25 5 m (170 mm, 210 mm), 4 m (255 mm) Cooper Ms design Brass, nickel-plated Immersion pocket 1) Stainless steel design Mat. No. 1.4571 (170 mm), mat. No. 1.4435 (210 mm) Handle for temp. setting Scale carrier 1) for sensor 170 and 210 mm Polyamide, glass fiber-reinforced Polyamide Application principles DEN-SMT/SI VD.JK.B3.02 Danfoss 04/2013 3

Data sheet Temperature controller AVT / VGU(F) (PN 25) Installation positions Temperature controller Temperature controller AVT / VGU(F) can be installed in any position. Temperature sensor The place of installation must be chosen in a way that the temperature of the medium is directly taken without any delay. Avoid overheating of temperature sensor. The temperature sensor must be immersed into the medium in its full length. Temperature sensors 170 mm R ½ and 210 mm R ¾ - The temperature sensor may be installed in any position. Temperature sensor 255 mm R ¾ - The temperature sensor must be installed as shown on the picture. Pressure temperature diagram EN-GJS-400-18-LT (GGG 40.3) PN 25 CuSn5ZnPb (Rg5) PN 25 working area Maximum allowed operating pressure as a function of medium temperature (according to EN 1092-2 and EN 1092-3). 4 VD.JK.B3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT / VGU(F) (PN 25) Valve sizing Given data: P max = 10 kw t = 6 K p v = 0,15 bar P max - cooling power (kw) t - temperature difference (K) p v - differential pressure across the valve Maximum flow Q max (m 3 /h) through the valve is calculated according to formula: Pmax 0,86 10 0,86 Qmax t 6 Q max = 1,43 m 3 /h k v value is calculated according to formula: Qmax 1,43 kv Δp 0,15 V k v = 3,7 m 3 /h Chosen k VS = 4,0 m 3 /h or read from the sizing diagram by taking a line through Q scale (1,43 m 3 /h) and p v scale (0,15 bar) to intersect k v scale at 3,7 m 3 /h Chosen k VS = 4,0 m 3 /h Solution: The example selects ext. thread valve VGU DN 15, k VS value 4,0. DEN-SMT/SI VD.JK.B3.02 Danfoss 04/2013 5

Data sheet Temperature controller AVT / VGU(F) (PN 25) Design 1. Valve VGU(F) 2. Valve insert 3. Pressure relieved valve cone 4. Valve stem 5. Distance ring 6. Union nut 7. Thermostatic actuator AVT 8. Thermostat stem 9. Bellows 10. Setting spring for temperature control 11. Handle for temperature setting, prepared for sealing 12. Scale carrier 13. Capillary tube 14. Flexible protected pipe (only at AVT 255 mm) 15. Temperature sensor 16. Immersion pocket 17. Sensor stuffing box 18. Housing of sensor stuffing box AVT 255 AVT 170 AVT 210 Function Medium temperature changes cause pressure changes in temperature sensor. Resulting pressure is being transferred through the capillary tube to the bellows. Bellows moves thermostat stem and opens or closes the valve. By increasing of medium temperature valve cone moves away the seat (valve opens by decreasing of medium temperature valve cone moves towards from the seat (valve closes). Handle for temperature setting can be sealed. Settings Temperature setting Temperature setting is being done by the adjustment of the setting spring for temperature control. The adjustment can be done by means of handle for temperature setting and/or temperature indicators. Adjustment diagram Temperature setting Relation between scale numbers 1-5 and closing temperature. Note: The values given are approximate AVT Thermostat... 170 mm, 210 mm AVT Thermostat... 255 mm 6 VD.JK.B3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT / VGU(F) (PN 25) Dimensions L 1 L H H 1 150 H 2 H 3 Ø 76 AVT DN L L 1 H H 1 H 2 H 3 mm 15 65-180 - 34-20 70-180 - 34-25 75-180 - 37-32 - 180-221 - 70 40-200 - 221-75 50-230 - 221-82 Note: other flange dimensions - see table for tailpieces Type Weight sensor 170 mm 1,3 sensor 210 mm kg 1,5 sensor 255 mm 1,6 L L H 2 H H 1 H 2 H 1 H VGU DN VGU DN 15-25 L H H 1 H 2 Weight (kg) mm 15 65 102 34 46 0,7 20 70 102 34 46 0,8 25 75 106 37 46 0,9 VGUF DN VGUF DN 32-50 L H H 1 H 2 Weight (kg) mm 32 180 185 70 88 7,5 40 200 190 75 88 9,0 50 230 197 83 88 11,1 Note: other flange dimensions - see table for tailpieces DEN-SMT/SI VD.JK.B3.02 Danfoss 04/2013 7

Data sheet Temperature controller AVT / VGU(F) (PN 25) Dimensions (continuous) L 1 d 2 L 3 L 2 Ø 9,5 Ø 12 174 170 d R k DN R 1) SW d L 1 2) L 2 L 3 k d 2 n mm 15 1/2 32 (G 3/4A) 21 130 131 139 65 14 4 20 3/4 41 (G 1A) 26 150 144 154 75 14 4 25 1 50 (G 11/4A) 33 160 160 159 85 14 4 32 - - - - - - 100 18 4 40 - - - - - - 110 18 4 50 - - - - - - 125 18 4 1) Conical ext. thread acc. to EN 10226-1 2) Flanges PN 25, acc. to EN 1092-2 Ø 16 Ø 19 Ø 16 223 215 266 SW 17 M14 1 6 SW 22 R ½ SW 22 M22 1 10 SW 27 R ¾ SW 22 R ¾ AVT 170 AVT 170 Immersion pocket AVT 210 AVT 210 Immersion pocket AVT 255 SW 25 (R ½) SW 27 (R ¾) M 20 1 (R ½) M 22 1 (R ¾) R ½; R ¾ 26 (R ½) 30 (R ¾) Housing of sensor stuffing box 8 VD.JK.B3.02 Produced by Danfoss A/S 04/2013

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS for steam (PN 25) Description Controller closes on rising temperature. The controllers are: - Type-tested acc. to EN 14597 and protect against exceeding temperatures: - District heating systems acc. to DIN 4747 - Heating systems acc. to EN 12828 (DIN 4751) and EN 12953-6 (DIN 4752) - Water heating systems for drinking and industrial waters acc. to DIN 4753 STM/VGS and STM/AVT/VGS are self-acting proportional temperature controllers used for temperature control and temperature monitoring primarily in steam or hot water applications for temperatures up to 200 C. VGS - valve with external thread Main data: DN 15-25 k VS 1,0-6,3 m 3 /h PN 25 Setting ranges: - STM monitor: 20 75 C / 40 95 C / 30 110 C - AVT thermostatic actuator: 10 40 C / 20 70 C / 40 90 C / 60 110 C and 10 45 C / 35 70 C / 60 100 C / 85 125 C Temperature: - Steam / circulation water / glycolic water up to 30 %: 2 200 C Connections: - Ext. thread (weld-on, thread and flange tailpieces) Flow and return mounting Ordering Example 1 - STM/VGS controller: Safety temperature monitor for steam; DN 15; k VS 1,6; PN 25; limit range 30 110 C; T max 200 C; ext. thread - 1 VGS DN 15 valve Code No: 065B0787-1 STM monitor, 30 110 C Code No: 065-0608 Option: - 1 Weld-on tailpieces Code No: 003H6908 All products will be delivered separately. The valve VGS will be delivered (assembled) together with an adapter M34 M45. VGS valve 1) Picture DN k VS Connection Code No. (mm) (m 3 /h) 15 1,0 065B0786 1,6 G ¾ A 065B0787 3,2 Cylindrical external thread acc. to ISO 228/1 065B0788 20 4,5 G 1 A 065B0789 25 6,3 G 1¼ A 065B0790 1) Adapter M34 M45 for connection to STM thermostat is factory assembled on the valve. (info: Adapter M34 M30 for connection to AMV(E) electrical actuators is part of the valve delivery too.) STM Safety temperature monitor (actuator) Picture For valves DN 15-50 Limit range ( C) Temperature sensor with brass immersion pocket, length, connection Code No. 30 110 065-0608 20 75 210 mm, R ¾ 1) 065-0609 40 95 065-0610 1) conic male thread EN 10226-1 DEN-SMT/SI VD.JK.F2.02 Danfoss 02/2013 1

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS (PN 25) Ordering (continuous) Example 2 - STM/AVT/VGS controller: Temperature controller with safety temperature monitor for steam; DN 15; k VS 1,6; PN 25; limit range 30 110 C; setting range 40 90 C; T max 200 C; ext. thread - 1 VGS DN 15 valve Code No: 065B0787-1 STM monitor, 30 110 C Code No: 065-0608 - 1 AVT thermostatic actuator, 40 90 C Code No: 065-0598 - 1 K2 combination piece Code No: 003H6855 Option: - 1 Weld-on tailpieces Code No: 003H6908 All products will be delivered separately. The valve VGS will be delivered (assembled) together with an adapter M34 M45. AVT thermostatic actuator Picture For valves DN 15-25 1) conic male thread EN 10226-1 2) without immersion pocket Accessories for valves Setting range ( C) -10 +40 Temperature sensor with brass immersion pocket, length, connection Code No. 065-0600 20 70 065-0601 40 90 210 mm, R ¾ 1) 065-0602 60 110 065-0603 10 45 065-0604 35 70 065-0605 60 100 1) 2) 255 mm, R ¾ 065-0606 85 125 065-0607 Picture Type designation DN Connection Code No. Weld-on tailpieces External thread tailpieces Flange tailpieces 15 003H6908 20-003H6909 25 003H6910 15 R ½ 003H6902 20 Conical ext. thread acc. to EN 10226-1 R ¾ 003H6903 25 R 1 003H6904 15 003H6915 20 Flanges PN 25, acc. to EN 1092-2 003H6916 25 003H6917 Accessories for thermostats Picture Type designation For controllers Material Code No. Immersion pocket PN 25 AVT/VGS Brass 065-4416 1) STM/VGS Stainless steel, mat. No. 1.4435 065-4417 1) Adapter 2) M34 1,5 mm/m45 1,5 mm 003H6927 Combination piece K2 Combination piece K3 1) Not for AVT thermostatic actuator code numbers: 065-0604, 065-0605, 065-0606, 065-0607 2) Adapter for VGS combinations with thermostatic actuator AVT, temperature monitors STM and temperature limiters STL 003H6855 003H6856 Service kits Picture Type designation for valves DN k VS Code No. 15 3,2 Valve body extension with stuffing box 20 4,5 003H6877 25 6,3 Housing of sensor stuffing box for sensors Code No. AVT R ¾ 065-4421 2 VD.JK.F2.02 Danfoss 02/2013 DEN-SMT/SI

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS (PN 25) Technical data VGS valve Nominal diameter DN 15 20 25 k VS value m 3 /h 1,0 1,6 3,2 4,5 6,3 Stroke mm 3 5 Control ratio > 1:50 Control characteristic linear Cavitation factor z 0,6 0,55 Leakage acc. to standard IEC 534 % of k VS 0,05 Nominal pressure PN 25 Max. differential pressure bar 10 Medium Steam/Circulation water/glycolic water up to 30 % Medium ph Min. 7, max. 10 Medium temperature C 2 200 Connections valve External thread tailpieces Weld-on, external thread and flange Materials Valve body Red bronze CuSn5ZnPb (Rg5) Valve seat Stainless steel, mat. No. 1.4571 Valve cone Stainless steel, mat. No. 1.4122 Pressure relieve system Bellows STM Safety temperature monitor (actuator) Limit range X s C 30 110 / 20 75 / 40 95 Time constant T acc. to EN 14597 s max. 100 Gain K s mm/ K 0,3 Max. adm. temperature at sensor 80 C above maximum setpoint Max. amb. temperature at thermostat C 0 70 Nominal pressure sensor Nominal pressure immersion pocket PN 25 Capillary tube length m 5 Materials Temperature sensor Immersion pocket Handle for temp. setting Scale carrier Ms design AVT Thermostatic actuator Setting range X s C Cooper Brass, nickel-plated Stainless steel design mat. No. 1.4435 Polyamide, glass fiber-reinforced Polyamide 10 40 / 20 70 / 40 90 / 60 110 10 45 / 35 70 / 60 100 / 85 125 Time constant T acc. to EN 14597 s max. 50 (210 mm), max. 30 (255 mm) Gain K s mm/ K 0,3 (210 mm); 0,7 (255 mm) Max. adm. temperature at sensor 50 C above maximum setpoint Max. amb. temperature at thermostat C 0 70 Nominal pressure sensor Nominal pressure immersion pocket Capillary tube length Materials Temperature sensor PN 25 5 m (210 mm), 4 m (255 mm) Cooper Ms design Brass, nickel-plated Immersion pocket 1) Stainless steel design Mat. No. 1.4435 (210 mm) Handle for temp. setting Scale carrier 1) for sensor 210 mm Polyamide, glass fiber-reinforced Polyamide DEN-SMT/SI VD.JK.F2.02 Danfoss 02/2013 3

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS (PN 25) Application principles Combinations AVT / VGS - temperature controller STM / VGS - afety temperature monitor STM / AVT / VGS - temperature controller with safety temperature monitor STM / AVT /AVT / VGS - two temperature controllers with safety temperature monitor 4 VD.JK.F2.02 Danfoss 02/2013 DEN-SMT/SI

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS (PN 25) Installation positions Temperature controller and safety temperature monitor Up to medium temperature of 160 C temperature controller AVT/VGS and safety temperature monitor STM/VGS can be installed in any position. For higher temperatures temperature controller AVT/VGS and safety temperature monitor STM/VGS have to be installed horizontal and in horizontal pipes with the actuator oriented downwards. Temperature sensor The place of installation must be chosen in a way that the temperature of the medium is directly taken without any delay. Avoid overheating of temperature sensor. The temperature sensor must be immersed into the medium in its full length. Temperature sensors 170 mm R½ and 210 mm R¾ - The temperature sensor may be installed in any position. Temperature sensor 255 mm R¾ - The temperature sensor must be installed as shown on the picture. Pressure temperature diagram CuSn5ZnPb (Rg5) PN 25 working area Maximum allowed operating pressure as a function of medium temperature (according to EN 1092-3). DEN-SMT/SI VD.JK.F2.02 Danfoss 02/2013 5

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS (PN 25) Valve sizing Steam valve sizing is based on 40 % drop of the steam pressure across the valve when fully open. At this condition the steam is travelling at or close to its critical velocity (approx. 300 m/s) and throttling would occur over the full valve stroke. If the steam is travelling slower than this, then the first part of the valve stroke would merely increase the velocity of the steam without reducing the volumetric flow. 6 VD.JK.F2.02 Danfoss 02/2013 DEN-SMT/SI

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS (PN 25) Valve sizing (continuous) 1. For saturated steam Given data: Flow rate: 70 kg/h Absolute inlet pressure: 5 bar (500 kpa) Remark: For this example follow dashed line The absolute inlet pressure is 500 kpa. Critical pressure drop (40 % of 500 kpa) is 200 kpa. Locate the diagonal line corresponding to the pressure drop of 200 kpa (line A-A). Read the absolute inlet pressure on the lower left hand scale (point B), and draw a horizontal line across until it meets the pressure drop diagonal A-A at point C. From this point C extend a vertical line upwards until it meets the horizontal line representing the steam flow of 70 kg/h from point D. The intersection of this is point E. The nearest diagonal k VS line above this is line F-F with a k VS of 1,6. If the ideal valve size is not available the next largest size should be selected to ensure design flow. The pressure drop through valve at the flow rate is found by the intersection of the 70 kg/h line with F-F (point E ) and dropping a vertical line downwards; this actually hits the horizontal line for 500 kpa absolute inlet pressure (point E ) at a pressure drop diagonal of 90 kpa. This is only 18 % of the pressure drop accross the valve and the control quality will not be good until the valve has partially closed. As with all steam valves this compromise is necessary since the next smaller valve would not pass the required flow (maximum flow would be about 60 kg/h; point P). The maximum flow for the same inlet pressure is found by extending the vertical line (C-E) through point E until it crosses the k VS 1,6 line F-F (point G) and reading off the flow (90 kg/h). 2. For superheated steam Given data: Flow rate: 170 kg/h Absolute inlet pressure: 5 bar (500 kpa) Steam temperature: 190 C Remark: For this example follow dotted line The procedure for superheated steam is much the same as for saturated steam, but uses a different flow scale which slightly elevates the readings according to the degree of superheat. As before, the diagonal critical pressure drop line A-A is located at 40 % of 500 kpa (200 kpa). The horizontal inlet pressure line through point B is now extended to the left to read off the corresponding saturated steam temperature at point H (150 C). The difference between the saturated steam temperature and the superheated steam temperature is 190 C 150 C = 40 C (see point J). The superheated steam flow 170 kg/h is found on the upper right hand scale (point K). From here the diagonal line is followed down until it meets a vertical line from the steam temperature elevation (40 C, point J) at point L. As before, the horizontal line through point B is drawn to cut line A-A at point C. The point where the vertical line from point C meets the horizontal line from point L is the operating point (point M). This horizontal line, L-M, is the corrected flow line. The nearest diagonal line above this is line N-N with a k VS 3,2. A vertical line dropped from the intersection of L-M line with line N-N (point M ) intersects the 500 kpa absolute inlet pressure line (point M ) at a pressure drop diagonal of about 150 kpa. This is about 30 % of the pressure drop accross the valve which will give reasonable control quality (compared to recommended ratio of 40 %). DEN-SMT/SI VD.JK.F2.02 Danfoss 02/2013 7

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS (PN 25) Design STM/VGS 1. Valve VGS 2. Valve insert 3. Pressure relieved valve cone 4. Valve stem 5. Valve body extension 6. Union nut 7. Safety temperature monitor STM 8. Thermostat stem 9. Setting spring for temperature control 10. Handle for limit setting, prepared for sealing 11. Scale carrier 12. Capillary tube 13. Temperature sensor 14. Immersion pocket 15. Safety spring AVT/VGS 1. Valve VGS 2. Valve insert 3. Pressure relieved valve cone 4. Valve stem 5. Valve body extension 6. Union nut 7. Thermostatic actuator AVT 8. Thermostat stem 9. Bellows 10. Setting spring for temperature control 11. Handle for temperature setting, prepared for sealing 12. Scale carrier 13. Capillary tube 14. Flexible protected pipe (only at AVT 255 mm) 15. Temperature sensor 16. Immersion pocket 17. Sensor stuffing box 18. Housing of sensor stuffing box AVT 255 AVT 210 8 VD.JK.F2.02 Danfoss 02/2013 DEN-SMT/SI

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS (PN 25) Function Mode of Operation The safety temperature monitor is proportional temperature controller which controls the temperature and protects the system against exceeding temperatures. The valve cone is soft saled and pressure relieved. Safety Temperature Monitor (STM/VGS) - Function In case the temperature at the temperature sensor exceeds the adjusted set point, safety temperature monitor interrupts energy supply by closing the valve. As soon as the temperature at the temperature sensor drops, the valve opens automatically. Handle for limit setting can be sealed - Extended safety function If there is a leakage in the area of the temperature sensor, the capillary tube, or the thermostat, the valve closes by a spring in the safety thermostat. In this case safety temperature monitor (actuator) must be replaced. - Physical Function Principle The safety temperature monitor operates in accordance with the liquid expansion principle. The temperature sensor, the capillary tube and the bellows are filled with liquid. As the temperature at the temperature sensor rises, the liquid expands, the thermostat stem moves out and closes the valve. Temperature Controller (AVT/VGS) - Function By increasing of medium temperature valve cone moves towards the seat (valve closes), by decreasing of medium temperature valve cone moves away from the seat (valve opens). Handle for temperature setting can be sealed. - Physical Function Principle Medium temperature changes cause pressure changes in temperature sensor. Resulting pressure is being transferred through the capillary tube to the bellows. Bellows moves thermostat stem and opens or closes the valve. Settings Temperature setting (AVT/VGS) Temperature setting is being done by the adjustment of the setting spring for temperature control. The adjustment can be done by means of handle for temperature setting and/or temperature indicators. Limit setting (STM/VGS) Limit setting is being done by the adjustment of the setting spring for temperature control. The adjustment can be done by means of handle for limit setting and/or temperature indicators. Adjustment diagram Temperature setting Relation between scale numbers 1-5 and closing temperature. Note: The values given are approximate AVT Thermostat... 210 mm AVT Thermostat... 255 mm Note: STM Safety temperature monitor (actuator): temperature scale is already written on the product DEN-SMT/SI VD.JK.F2.02 Danfoss 02/2013 9

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS (PN 25) Dimensions L L 150 194 H H 2 H 1 H 2 AVT/VGS STM/VGS DN L H H 1 H 2 (mm) 15 65 257 301 34 20 70 257 301 34 25 75 257 301 37 H Ø 76 Ø 82 VGS AVT STM DN H (mm) Weight (kg) 15 178 1,3 20 178 1,4 25 178 1,6 Weight Type AVT STM sensor 210 mm 1,5 2,6 kg sensor 255 mm 1,6-10 VD.JK.F2.02 Danfoss 02/2013 DEN-SMT/SI

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS (PN 25) Dimensions (continuous) Ø 16 Ø 19 Ø 16 10 223 215 266 SW 22 M22 1 SW 27 R ¾ SW 22 R ¾ AVT 210 / STM AVT 210 / STM Immersion pocket AVT 255 L 1 d 2 L 3 L 2 n d R k SW SW SW 45 DN R 1) SW d L 1 2) L 2 L 3 k d 2 n mm 15 1/2 32 (G 3/4A) 21 130 131 139 65 14 4 20 3/4 41 (G 1A) 26 150 144 154 75 14 4 25 1 50 (G 11/4A) 33 160 160 159 85 14 4 1) Conical ext. thread acc. to EN 10226-1 2) Flanges PN 25, acc. to EN 1092-2 SW 27 M22 1 85 108 M34 R ¾ 30 109 109 Housing of sensor stuffing box Combination piece K2 Combination piece K3 M45 Adapter M34 1,5 mm / M45 1,5 mm DEN-SMT/SI VD.JK.F2.02 Danfoss 02/2013 11

Data sheet Temperature controller AVT with safety temperature monitor STM / VGS (PN 25) 12 VD.JK.F2.02 Produced by Danfoss A/S 02/2013

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN25) Description Controller closes on rising temperature. The controllers are: - Type-tested acc. to EN 14597 and protect against exceeding temperatures: - District heating systems acc. to DIN 4747 - Heating systems acc. to EN 12828 (DIN 4751) and EN 12953-6 (DIN 4752) - Water heating systems for drinking and industrial waters acc. to DIN 4753 STM / VGF STM/VG(F) and STM/AVT/VG(F) are self-acting proportional temperature controllers used for temperature control and temperature monitoring of drinking water, water and water glycol mixtures for heating and district heating systems. VG - valve with external thread VGF - valve with flange Main data: DN 15-50 k VS 0,4-25 m 3 /h PN 25 Setting ranges: - STM monitor: 20 75 C / 40 95 C / 30 110 C - AVT thermostatic actuator: 10 +40 C / 20 70 C / 40 90 C / 60 110 C and 10 45 C / 35 70 C / 60 100 C / 85 125 C Temperature: - Circ. water / glycolic water up to 30%: 2 150 C Connections: - Ext. thread (weld-on, thread and flange tailpieces) - Flange Flow and return mounting Ordering Example 1 - STM / VG(F) controller: Safety temperature monitor; DN 15; k VS 1,6, PN 25; limit range 30 110 C; T max 150 C; ext. thread - 1 VG DN 15 valve Code No: 065B0772-1 STM monitor, 30 110 C Code No: 065-0608 Option: - 1 Weld-on tailpieces Code No: 003H6908 All products will be delivered separately. VG, VGF valve Picture DN k VS (mm) (m 3 /h) Connection Code No. 0,4 065B0770 1,0 065B0771 15 1,6 G ¾ A 065B0772 2,5 065B0773 4,0 Cylindrical external thread acc. to 065B0774 20 6,3 ISO 228/1 G 1 A 065B0775 25 8,0 G 1¼ A 065B0776 32 12,5 G 1¾ A 065B0777 40 16 G 2 A 065B0778 50 20 G 2½ A 065B0779 15 4,0 065B0780 20 6,3 065B0781 25 8,0 065B0782 Flanges PN 25, acc. to EN 1092-2 32 12,5 065B0783 40 20 065B0784 50 25 065B0785 DEN-SMT/SI VD.JK.E3.02 Danfoss 04/2013 1

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN 25) Ordering (continuous) Example 2- STM / AVT / VG(F) controller: Temperature controller with safety temperature monitor; DN 15, k VS 1,6; PN 25; limit range 30 110 C; setting range 40 90 C; T max 150 C; ext. thread STM Safety temperature monitor (actuator) Picture For valves DN 15-50 Limit range ( C) Temperature sensor with brass immersion pocket, length, connection Code No. 30 110 065-0608 20 75 210 mm, R ¾ 1) 065-0609 40 95 065-0610 - 1 VG DN 15 valve Code No: 065B0772-1 STM monitor, 30 110 C Code No: 065-0608 - 1x AVT thermostatic actuator, 40 90 C Code No: 065-0598 - 1 K2 Combination piece Code No: 003H6855 Option: - 1 Weld-on tailpieces Code No: 003H6908 All products will be delivered separately. 1) conic male thread EN 10226-1 AVT Thermostatic actuator Picture 1) conic male thread EN 10226-1 2) without immersion pocket For valves DN 15-25 DN 32-50 DN 15-50 Setting range ( C) 10 +40 Temperature sensor with brass immersion pocket, length, connection Code No. 065-0596 20 70 065-0597 170 mm, R ½ 1) 40 90 065-0598 60 110 065-0599 10 +40 065-0600 20 70 065-0601 210 mm, R ¾ 1) 40 90 065-0602 60 110 065-0603 10 45 065-0604 35 70 065-0605 60 100 1) 2) 255 mm, R ¾ 065-0606 85 125 065-0607 Accessories for valves Picture Type designation DN Connection Code No. 15 003H6908 20 003H6909 Weld-on tailpieces 25 003H6910-32 003H6911 40 003H6912 50 003H6913 15 R ½ 003H6902 20 R ¾ 003H6903 External thread tailpieces 25 Conical ext. thread acc. to R 1 003H6904 32 EN 10226-1 R 1¼ 003H6905 40 R 1½ 065F6061 50 R 2 065F6062 15 003H6915 Flange tailpieces 20 Flanges PN 25, acc. to EN 1092-2 003H6916 25 003H6917 Accessories for thermostats Picture Type designation PN For controllers Material Code No. Immersion pocket 25 Combination piece K2 Combination piece K3 AVT/VG(F) DN 15-25 AVT/VG(F) DN 32-50 STM/VG(F) DN 15-50 1) Not for AVT thermostatic actuator code numbers: 065-0604, 065-0605, 065-0606, 065-0607 Brass 065-4414 1) Stainless steel, mat. No. 1.4571 065-4415 1) Brass 065-4416 1) Stainless steel, mat. No. 1.4435 065-4417 1) 003H6855 003H6856 2 VD.JK.E3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN 25) Ordering (continuous) Service kits Picture Type designation Valve insert Housing of sensor stuffing box DN k VS Code No. (mm) (m 3 /h) 0,4 003H6869 1,0 003H6870 15 1,6 003H6871 2,5 003H6872 4,0 003H6873 20 6,3 003H6874 25 8,0 003H6875 32 / 40 / 50 12,5 / 16 / 20 / 25 003H6876 for sensors AVT R ½ 065-4420 AVT R ¾ 065-4421 Technical data VG, VGF valves Nominal diameter DN 15 20 25 32 40 50 k VS value m 3 /h 0,4 1,0 1,6 2,5 4,0 6,3 8 12,5 16/20 1) 20/25 1) Stroke 3 5 10 Control ratio > 1:50 Control characteristic Cavitation factor z 0,6 0,55 0,5 Leakage acc. to standard IEC 534 % of k VS 0,02 0,05 Nominal pressure PN 25 Max. differential pressure bar 20 16 linear Medium Circulation water / glycolic water up to 30% Medium ph Min. 7, max. 10 Medium temperature C 2 150 Connections Materials Valve body valve tailpieces thread External thread - Flange Weld-on and external thread Flange - Red bronze CuSn5ZnPb (Rg5) Ductile iron EN-GJS-400-18-LT (GGG 40.3) flange - Ductile iron EN-GJS-400-18-LT (GGG 40.3) Valve seat Stainless steel, mat. No. 1.4571 Valve cone Sealing Pressure relieve system 1) Flange valve body Dezincing free brass CuZn36Pb2As EPDM Piston STM Safety temperature monitor (actuator) Limit range X s C 20 75 / 40 95 / 30 110 Time constant T acc. to EN 14597 s max. 100 Gain K s mm/ K 0,3 Max. adm. temperature at sensor 80 C above maximum setpoint Max. amb. temperature at thermostat C 0 70 Nominal pressure sensor Nominal pressure immersion pocket PN 25 Capillary tube length m 5 Materials Temperature sensor Cooper Immersion pocket Ms design Brass, nickel-plated Stainless steel design mat. No. 1.4435 Handle for temp. setting Polyamide, glass fiber-reinforced Scale carrier Polyamide DEN-SMT/SI VD.JK.E3.02 Danfoss 04/2013 3

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN 25) Technical data (continuous) AVT Thermostatic actuator Setting range X s C 10 40 / 20 70 / 40 90 / 60 110 10 45 / 35 70 / 60 100 / 85 125 Time constant T acc. to EN 14597 s max. 50 (170 mm, 210 mm), max. 30 (255 mm) Gain K s mm/ K 0,2 (170 mm); 0,3 (210 mm); 0,7 (255 mm) Max. adm. temperature at sensor 50 C above maximum setpoint Max. amb. temperature at thermostat C 0 70 Nominal pressure sensor Nominal pressure immersion pocket PN 25 Capillary tube length m 5 (170 mm, 210 mm), 4 m (255 mm) Materials Temperature sensor Cooper Immersion pocket 1) Ms design Brass, nickel-plated Stainless steel design Mat. No. 1.4571 (170 mm), mat. No. 1.4435 (210 mm) Handle for temp. setting Scale carrier 1) for sensor 170 and 210 mm Polyamide, glass fiber-reinforced Polyamide Application principles Combinations AVT / VG - temperature controller STM / VG - safety temperature monitor STM / AVT / VG - temperature controller with safety temperature monitor STM / AVT / AVT /VG - two temperature controllers with safety temperature monitor 4 VD.JK.E3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN 25) Installation positions Temperature controller and safety temperature monitor Temperature controller AVT / VG(F) and safety temperature monitor STM / VG(F) can be installed in any position. Temperature sensor The place of installation must be chosen in a way that the temperature of the medium is directly taken without any delay. Avoid overheating of temperature sensor. The temperature sensor must be immersed into the medium in its full length. Temperature sensors 170 mm R ½ and 210 mm R ¾ - The temperature sensor may be installed in any position. Temperature sensor 255 mm R ¾ - The temperature sensor must be installed as shown on the picture. Pressure temperature diagram EN-GJS-400-18-LT (GGG 40.3) PN 25 CuSn5ZnPb (Rg5) PN 25 working area Maximum allowed operating pressure as a function of medium temperature (according to EN 1092-2 and EN 1092-3). DEN-SMT/SI VD.JK.E3.02 Danfoss 04/2013 5

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN 25) Valve sizing Given data: P max = 14 kw t = 20 K p v = 0,15 bar P max - heating power (kw) t -temperature difference (K) p v - differential pressure across the valve Maximum flow Q max (m 3 /h) through the valve is calculated according to formula: P max 0, 8 6 14 0,86 Qmax t 20 Q max = 0,6 m 3 /h k v value is calculated according to formula: Qmax 0, 6 k v p 0, 1 5 V k v = 1,5 m 3 /h Chosen k VS = 1,6 m 3 /h or read from the sizing diagram by taking a line through Q scale (0,6 m 3 /h) and p v scale (0,15 bar) to intersect k v -scale at 1,5 m 3 /h Chosen k vs = 1,6 m 3 /h Solution: The example selects 1) ext. thread valve VG DN 15, k VS value 1,6 or 2) flange valve VGF DN 15, k VS value 1,6 6 VD.JK.E3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN 25) Design STM / VGF 1. Valve VG(F) 2. Valve insert 3. Pressure relieved valve cone 4. Valve stem 5. Union nut 6. Safety temp. monitor STM 7. Thermostat stem 8. Setting spring for temperature control 9. Handle for limit setting, prepared for sealing 10. Scale carrier 11. Capillary tube 12. Temperature sensor 13. Immersion pocket 14. Safety spring AVT / VG(F) 1. Valve VG(F) 2. Valve insert 3. Pressure relieved valve cone 4. Valve stem 5. Union nut 6. Thermostatic actuator AVT 7. Thermostat stem 8. Bellows 9. Setting spring for temperature control 10. Handle for temperature setting, prepared for sealing 11. Scale carrier 12. Capillary tube 13. Flexible protected pipe (only at AVT 255 mm) 14. Temperature sensor 15. Immersion pocket 16. Sensor stuffing box 17. Housing of sensor stuffing box AVT 255 AVT 170 AVT 210 DEN-SMT/SI VD.JK.E3.02 Danfoss 04/2013 7

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN 25) Function Mode of Operation The safety temperature monitor is proportional temperature controller which controls temperature and protects the system against exceeding temperatures. The valve cone is soft sealed and pressure relieved. Safety Temperature Monitor (STM/VG(F)) - Function In case the temperature at the temperature sensor exceeds the adjusted set point, safety temperature monitor interrupts energy supply by closing the valve. As soon as the temperature at the temperature sensor drops, the valve opens automatically. Handle for limit setting can be sealed. - Extended safety function If there is a leakage in the area of the temperature sensor, the capillary tube, or the thermostat, the valve closes by a safety spring in the safety thermostat. In this case safety temperature monitor (actuator) must be replaced. - Physical Function Principle The safety temperature monitor operates in accordance with the liquid expansion principle. The temperature sensor, the capillary tube and the bellows are filled with liquid. As the temperature at the temperature sensor rises, the liquid expands, the thermostat stem moves out and closes the valve. Temperature Controller (AVT/VG(F)) - Function By increasing of medium temperature valve cone moves towards the seat (valve closes), by decreasing of medium temperature valve cone moves away from the seat (valve opens). Handle for temperature setting can be sealed. - Physical Function Principle Medium temperature changes cause pressure changes in temperature sensor. Resulting pressure is being transferred through the capillary tube to the bellows. Bellows moves thermostat stem and opens or closes the valve. Settings Temperature setting (AVT) Temperature setting is being done by the adjustment of the setting spring for temperature control. The adjustment can be done by means of handle for temperature setting and/or temperature indicators. Limit setting (STM / VG(F) Limit setting is being done by the adjustment of the setting spring for temperature control. The adjustment can be done by means of handle for limit setting and/or temperature indicators. Adjustment diagram Temperature setting Relation between scale numbers 1-5 and closing temperature. Note: The values given are approximate AVT Thermostat... 170 mm, 210 mm AVT Thermostat... 255 mm Note: STM Safety temperature monitor (actuator): temperature scale is already written on the product 8 VD.JK.E3.02 Danfoss 04/2013 DEN-SMT/SI

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN 25) Dimensions L 1 L H 1 H 3 H 4 H 5 AVT/VG DN15-50 AVT/VGF DN 15-50 L 1 L H 2 H 4 H 4 150 Ø 76 AVT 194 H 5 Ø 82 STM STM/VG DN15-50 STM/VGF DN15-50 DN L L1 H1 H2 H3 H4 H4 H5 15 65 130 180 224 229 274 34 47 20 70 150 180 224 229 274 34 52 25 75 160 180 224 229 274 37 57 32 100 180 221 266 221 266 62 70 40 110 200 221 266 221 266 62 75 50 130 230 221 266 221 266 62 82 AVT, STM Weight Type AVT STM sensor 170 mm 1,4 - sensor 210 mm kg 1,5 2,6 sensor 255 mm 1,6 - Ø 16 Ø 16 Ø 19 Ø 9,5 Ø 12 174 170 223 215 266 SW 17 M14 1 6 SW 22 R ½ SW 22 M22 1 10 SW 27 R ¾ SW 22 R ¾ AVT 170 AVT 170 Immersion pocket AVT 210 / STM AVT 210 / STM Immersion pocket AVT 255 DEN-SMT/SI VD.JK.E3.02 Danfoss 04/2013 9

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN 25) Dimensions (continuous) L L L L H 1 L 1 d 2 L 3 L 2 d R k H 2 H H 1 H 2 H H 2 H H 2 H 1 H 1 H VG DN 15-25 VG DN 32-50 VGF DN 15-25 VGF DN 32-50 VG DN L H H1 H2 Weight mm (kg) 15 65 80 34 46 0,7 20 70 80 34 46 0,8 25 75 83 37 46 0,9 32 100 151 63 88 3,0 40 110 151 63 88 3,1 50 130 151 63 88 3,8 VGF DN L H H 1 H 2 Weight mm (kg) 15 130 144 48 96 3,3 20 150 149 53 96 4,1 25 160 154 58 96 4,7 32 180 158 70 88 7,5 40 200 163 75 88 9,0 50 230 171 83 88 11,1 Note: other flange dimensions - see table for tailpieces DN R 1) SW d L 1 2) L 2 L 3 k d 2 n mm 15 1/2 32 (G 3/4A) 21 130 131 139 65 14 4 20 3/4 41 (G 1A) 26 150 144 154 75 14 4 25 1 50 (G 11/4A) 33 160 160 159 85 14 4 32 11/4 63 (G 1¾A) 42-177 184 100 18 4 40 1 1/2 70 (G 2A) 47-195 204 110 18 4 50 2 82 (G 2½A) 60-252 234 125 18 4 1) Conical ext. thread acc. to EN 10226-1 2) Flanges PN 25, acc. to EN 1092-2 SW 25 (R ½) SW 27 (R ¾) M 20 1 (R ½) M 22 1 (R ¾) 85 108 R ½; R ¾ 26 (R ½) 30 (R ¾) 109 109 Housing of sensor stuffing box Combination piece K2 Combination piece K3 DEN-SMT/SI VD.JK.E3.02 Danfoss 04/2013 10

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN 25) DEN-SMT/SI VD.JK.E3.02 Danfoss 04/2013 11

Data sheet Temperature controller AVT with safety temperature monitor STM / VG(F) (PN 25) 12 VD.JK.E3.02 Produced by Danfoss A/S 04/2013