Expansion valves - 2 of 2

Transcription

1 Expansion valves - 2 of 2 Contents Page Thermostatic expansion valves, type T 2 and TE 2 Introduction... 3 Features... 3 Technical data... 3 Superheat... 3 Ordering: Components with flare flare connection... 4 Flare connections... 4 Components with flare solder connection... 4 Solder adaptor... 5 Orifice assembly with filter... 5 Capacity: R R 407C... 7 R 134a... 8 R 404A / R Design - Function Identification Dimensions and weights Thermostatic expansion valve, type A/AE Introduction Features Standard range Technical data MOP valves Identification Ordering Capacity: R R 134a R 404A/R R 407C R 410A Design / Function Dimensions and weight Thermostatic expansion valve, type B/BE and C/CE Introduction Features Standard range Variant range Technical data MOP valves Identification Ordering: Angleway - R 22, R 134a, R 404A/R Angleway - R 407C, R 410A Capacity: R R 134a R 404A/R R 407C R 410A Design / Function Dimensions and weight ã Danfoss A/S (RC-CM / MWA), RK0YB102 1

2 Expansion valves - 2 of 2 Contents Page Thermostatic expansion valve, type TC Introduction Features Standard range: TCAE TCBE Variant range: TCBE / TCCE Technical data MOP-Valves Identification Ordering: TCAE, straightway TCAE, orifice assembly TCBE, straightway Design / Function Capacity R R 134a R 404A R 407C R R 410A Dimensions and weight Liquid distributor for thermostatic expansion valve, type 69G Introduction Approvals Selection of liquid distributor Capacity Ordering Dimensions and weights RK0YB102 ã Danfoss A/S (RC-CM / MWA),

3 Thermostatic expansion valves, type T 2 and TE 2 Introduction Thermostatic expansion valves regulate the injection of refrigerant liquid into evaporators. Injection is controlled by the refrigerant superheat. Therefore the valves are especially suitable for liquid injection in dry evaporators where the superheat at the evaporator outlet is proportional to the evaporator load. Features Large temperature range Equally applicable to freezing, refrigeration and air conditioning applications. Interchangeable orifice assembly - easier stocking - easy capacity matching - better service. Rated capacities from 0.5 to 15.5 kw (0.15 to 4.5 TR) for R 22 Can be supplied with MOP (Max. Operating Pressure) Protects the compressor motor against excessive evaporating pressure during normal operation. Patented double contact bulb Fast and easy to install. Good temperature transfer from pipe to bulb. Valves for special temperature ranges can be supplied. Technical data Max. temperature Bulb, when valve is installed: 100 C Bulb, element not mounted: 60 C Min. temperature T 2 TE 2: 60 C MOP-points Max. test pressure PT = 36 bar Max. working pressure PS/MWP = 28 bar Refrigerant Range N Range NM Range NL Range B C C C C MOP-point in evaporating temperature t e and evaporating pressure p e +15 C/+60 F 0 C/+32 F -10 C/+15 F -20 C/-4 F R psig/6.9 bar 60 psig/4.0 bar 35 psig/3.5 bar 20 psig/1.5 bar R 407C 95 psig/6.6 bar R 134a 55 psig/5 bar 30 psig/3.1 bar 15 psig/2.1 bar R 404A/R psig/9.3 bar 75 psig/6.2 bar 50 psig/4.4 bar 30 psig/3.1 bar Superheat SS = static superheat OS = opening superheat SH = SS + OS = total superheat Q nom = rated capacity Q max = maximum capacity Static superheat SS can be adjusted with setting spindle. The standard superheat setting SS is 5 K for valves without MOP and 4 K for valves with MOP. The opening superheat OS is 6 K from when opening begins to where the valve gives its rated capacity Q nom. Example Static superheat Opening superheat Total superheat SS = 5 K OS = 6 K SH = = 11 K ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AX102 3

4 Thermostatic expansion valves, type T 2 and TE 2 Ordering, components with flare flare connection Thermostatic element with sensor band, without orifice, filter cone, nuts Connection Code no. Pressure Refri- Valve Capillary Inlet equaliz- Range N Range NM Range NL Range B gerant type tube 1 ) ation 1 ) 40 to +10 C 40 to 5 C 40 to 15 C 60 to 25 C Outlet m in. in. mm mm Without MOP With MOP With MOP With MOP Without MOP With MOP R 22 TX 2 Int Z Z Z Z Z Z3228 TEX 2 Ext Z Z Z Z Z Z3229 R 407C TZ 2 Int Z Z3516 TEZ 2 Ext Z Z3517 R 134a TN 2 Int Z Z Z Z3369 TEN 2 Ext Z Z Z Z3370 R 404A/ TS 2 Int Z Z Z Z Z Z3410 R 507 TES 2 Ext Z Z Z Z Z Z ) See the section "Flare connections" Flare connections Connection for copper tubing Reducer for copper tubing with outside diameter with outside diameter Code no. in. mm in. mm L L L L1107 Example A TE 2 thermostatic expansion valve consists of two elements + flare nuts if required: - 1 thermostatic element - 1 orifice assembly and flare nuts When ordering one thermostatic expansion valve, TEX 2 with orifice 01, five code numbers are required: - 1-off thermostatic element, 068Z off orifice assembly 01, off 3 8 in. flare nut, 011L off 1 2 in. flare nut, 011L off 1 4 in. flare nut, 011L1101 Ordering, components with flare solder connection Thermostatic element with sensor band, without orifice, filter cone, nuts Refrigerant R 22 R 407C R 134a R 404A/ R 507 Connection Code no. Pressure Capillary Valve equaliz- tube Inlet Outlet Range N Range NL Range B type ation 1 ) Flare ODF solder -40 to +10 C -40 to -15 C -60 to -25 C m in. / mm in. mm Without MOP MOP +15 C MOP -10 C Without MOP MOP -20 C TX 2 Int Z Z Z Z3319 TX 2 Int Z Z Z Z Z3276 TEX 2 Ext Z Z Z Z3320 TEX 2 Ext Z Z Z Z Z3277 TZ 2 Int Z3229 TZ 2 Int Z Z3514 TEZ 2 Ext Z Z3447 TEZ 2 Ext Z Z3515 TN 2 Int Z Z3387 TN 2 Int Z Z3388 TEN 2 Ext Z Z3389 TEN 2 Ext Z Z3390 TS 2 Int Z Z Z Z Z3420 TS 2 Int Z Z Z Z Z3427 TES 2 Ext Z Z Z Z Z3421 TES 2 Ext Z Z Z Z Z ) TE valves with inch outlet have 1 4 inch pressure equalization. TE valves with mm outlet have 6 mm pressure equalization. 4 Technical leaflet - RD1AX102 ã Danfoss A/S (RC-CM / MWA),

5 Thermostatic expansion valves, type T 2 and TE 2 Solder adaptor Flare connections See previous page. The adaptor is for use with thermostatic expansion valves T 2 and TE 2 with flare solder connections. When the adaptor is fitted correctly it meets the sealing requirements of DIN The adaptor offers the following advantages: The orifice assembly can be replaced. The filter can be cleaned or replaced. Solder adaptor without orifice assembly and filter Connection ODF solder Code no. 1 4 in mm in mm Filter for solder adaptor Description Code no. Filter excl. orifice assembly The standard orifice in T 2 and TE 2 can be used with the solder adaptor when the expansion valve filter is replaced with a separately ordered filter. Only in this way can the sealing requirements of DIN 8964 be fulfilled. Solder adaptor for filter drier (FSA) may not be used in thet 2 inlet. Orifice assembly with filter for solder adaptor Orifice no. Code no. 0X For capacities see the tables above. Orifice assembly with filter The rated capacity is based on: Evaporating temperature t e = +5 C for range N and t e = 30 C for range B Condensing temperature t c = +32 C Refrigerant temperature ahead of valve t l = +28 C Range N: - 40 to +10 C Orifice no. Rated capacity in tons (TR) Rated capacity in kw Code no. R22 R 407C R 134a R404A R22 R 407C R 134a R404A R507 R507 0X Range B: 60 to 25 C Orifice no. Rated capacity in tons (TR) Rated capacity in kw Code no. R22 R404A R22 R404A R507 R507 0X ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AX102 5

6 Capacity Capacity in kw for range N: -40 C to +10 C Valve type Thermostatic expansion valves, type T 2 and TE 2 R 22 Orifice Pressure drop across valve Dp bar Pressure drop across valve Dp bar no Evaporating temperature +10 C Evaporating temperature 0 C TX 2/TEX X TX2/TEX TX2/TEX TX2/TEX TX2/TEX TX2/TEX TX2/TEX TX2/TEX Evaporating temperature -10 C Evaporating temperature -20 C TX 2/TEX X TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX Evaporating temperature -30 C Evaporating temperature -40 C TX 2/TEX X TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX Capacity in kw for range B -60 C to-25 C Valve type Orifice Pressure drop across valve Dp bar Pressure drop across valve Dp bar no Evaporating temperature -25 C Evaporating temperature -30 C TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX Evaporating temperature -40 C Evaporating temperature -50 C TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX Evaporating temperature -60 C TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX TX 2/TEX Correction for subcooling Dt sub The evaporator capacities used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the required evaporator capacity by the correction factor below. Selections can then be made from the tables above. Note: Insufficient subcooling can produce flash gas. Dt u 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K Correction factor Example Refrigerant = R 22 Evaporator capacity Q e = 5 kw Subcooling = 10 K Correction factor from table = 1.06 Corrected capacity = = 4.72 kw 6 Technical leaflet - RD1AX102 ã Danfoss A/S (RC-CM / MWA),

7 Thermostatic expansion valves, type T 2 and TE 2 Capacity Capacity in kw for range N: -40 C to +10 C R 407C Orifice Pressure drop across valve Dp bar Pressure drop across valve Dp bar Valve type no Evaporating temperature +10 C Evaporating temperature +0 C TZ 2/TEZ X TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ Evaporating temperature 10 C Evaporating temperature 20 C TZ 2/TEZ X TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ Evaporating temperature 30 C Evaporating temperature 40 C TZ 2/TEZ X TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ TZ 2/TEZ Correction for subcooling Dt sub The evaporator capacities used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the required evaporator capacity by the correction factor below. Selections can then be made from the tables above. Note: Insufficient subcooling can produce flash gas. Dt u 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K Correction factor ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AX102 7

8 Thermostatic expansion valves, type T 2 and TE 2 Capacity Capacity in kw, range N: -40 C to +10 C R 134a Orifice Pressure drop across valve Dp bar Pressure drop across valve Dp bar Valve type no Evaporating temperature +10 C Evaporating temperature 0 C TN 2/TEN X TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN Evaporating temperature 10 C Evaporating temperature 20 C TN 2/TEN X TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN Evaporating temperature 30 C Evaporating temperature 40 C TN 2/TEN X TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN TN 2/TEN Correction for subcooling Dt sub The evaporator capacities used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the required evaporator capacity by the correction factor below. Selections can then be made from the tables above. Note: Insufficient subcooling can produce flash gas. Dt u 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K Correction factor Technical leaflet - RD1AX102 ã Danfoss A/S (RC-CM / MWA),

9 Thermostatic expansion valves, type T 2 and TE 2 Capacity Capacity in kw for range N: -40 C to +10 C R 404A / R 507 Orifice Pressure drop across valve Dp bar Pressure drop across valve Dp bar Valve type no Evaporating temperature +10 C Evaporating temperature +0 C TS2/TES X TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES Evaporating temperature 10 C Evaporating temperature 20 C TS2/TES X TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES Evaporating temperature 30 C Evaporating temperature 40 C TS 2/TES X TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES Capacity in kw for range B: -60 to -25 C Valve type Orifice Pressure drop across valve Dp bar Pressure drop across valve Dp bar no Evaporating temperature 25 C Evaporating temperature 30 C TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES Evaporating temperature 40 C Evaporating temperature 50 C TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES Evaporating temperature 60 C TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES TS 2/TES Correction for subcooling Dt sub Note: Insufficient subcooling can produce flash gas. The evaporator capacities used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the required evaporator capacity by the correction factor below. Selections can then be made from the tables above. Dt u 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K Correction factor ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AX102 9

10 Thermostatic expansion valves, type T 2 and TE 2 Design Function General T 2 and TE 2 valves have an interchangeable orifice assembly. For the same valve type and refrigerant, the associated orifice assembly is suitable for all versions of valve body and in all evaporating temperature ranges. The charge in the thermostatic element depends on the evaporating temperature range. The valves can be equipped with internal (T 2) or external (TE 2) pressure equalization. External pressure equalization should always be used on systems with liquid distributors. The double contact bulb gives fast and precise reaction to temperature changes in the evaporator. It also makes fitting the bulb quick and easy. The valves are able to withstand the effects that normally occur with hot gas defrosting. To ensure long operating life, the valve cone and seat are made of a special alloy with particularly good wear qualities. 1. Thermostatic element (diaphragm) 2. Interchangeable orifice assembly 3. Valve body 4. Superheat setting spindle (see instructions) T 2 10 Technical leaflet - RD1AX102 ã Danfoss A/S (RC-CM / MWA),

11 Thermostatic expansion valves, type T 2 and TE 2 Identification The thermostatic element is fitted with a laser engraving on top of the diaphragm. This engraving gives valve type (with code number), evaporating temperature range, MOP point, refrigerant, and max. working pressure, PB/MWP. The code refers to the refrigerant for which the valve is designed: X = R 22 Z = R 407C N = R 134a S = R 404A/ R507 Orifice assembly for T 2 and TE 2 The orifice assembly is marked with the orifice size (e.g. 06) and week stamp + last number in the year (e.g. 279). The orifice assembly number is also given on the lid of its plastic container. Element label Orifice assembly and filter for T 2 and TE 2 Capillary tube label for T 2 and TE 2 The label gives the orifice size (04) and consists of the lid of the orifice assembly plastic container. It can easily be fastened around the expansion valve capillary tube to clearly identify the valve size. Capillary tube label T 2 and TE 2 Dimensions and weights T 2 and TE 2 Flare flare Flare solder Flare x flare Flare x solder Outlet Equalization Weight A B kg / lb 1 / 2 " flare 1 / 2 " solder 12 mm solder 1 / 4 " flare 1 / 4 " solder 6 mm solder 0.3 / / 0.7 Weight: 0 05 kg Solder adaptor 0 11 lb ODF in m m 1 / / 8 10 ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AX102 11

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13 Thermostatic expansion valve, type A/AE Introduction A/AE valves are made of stainless steel and are therefore very suitable for refrigeration systems in the food industry A/AE valves are available with interchangeable orifice assembly in straightway versions A/AE has been specially developed for soldering into hermetic refrigeration systems A/AE valves can be used in many different forms of refrigeration systems, for example: - Traditional refrigeration systems - Heat pump systems - Air conditioning units - Refrigeration appliances - Liquid coolers - Ice cube machines - Mobile refrigeration systems Features Interchangeable orifice assembly designed for: - Easy mounting - Optimized tightness Bimetal connections - Simple, fast soldering without the need for wet cloth or refrigeration pliers Refrigerants R 22, R 134a, R 404A, R 407 C, R 507 and future refrigerants Capacities from 0 6 to 16 kw (0 17 to 4 5 TR) for R 22 - Large capacity range in small steps Stable regulation Biflow function Compact design - small dimensions and low weight Stainless steel, solder version - high connection strength and tightness - capillary tube joints of high strength and vibration resistance Laser-welded, stainless steel thermostatic diaphragm element - optimum function - long diaphragm life - high pressure resistance Stainless steel double contact bulb - simple and fast installation - good heat transfer from pipe to bulb Adjustable superheat -accurate setting -adjustable in operation Available with MOP (Max Operating Pressure) Wide range of valves Interchangeable filter for easy cleaning Standard range The standard range can be supplied in the Static superheat (SS) (R 507): following versions: Valves without MOP 6 4 K Range N - 40 to +10 C, without MOP Valves with MOP 5 4 K Range N - 40 to +10 C, MOP +15 C Range NM - 40 to - 5 C, MOP 0 C Capillary tube length 1 5 m Range B - 60 to -25 C, without MOP Range B - 60 to -25 C, MOP -20 C Connections: Valves for special temperature ranges can be supplied Inlet 1 /4 in /6 mm 3 /8 in /10 mm Outlet 1 /2 in /12 mm Static superheat (SS) (R 22, R 134a, R 404A and R 407C): Valves without MOP 5 K Valves with MOP 4 K ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AC402 13

14 Thermostatic expansion valve, type A/AE Technical data Max bulb temperature 100 C Max valve body temp 120 C, short-lived peak 150 C Permissible working pressure PB = 34 bar Biflow operation With flow in the opposite direction, the rated capacity is reduced by up to 15% AE with orifice 9, A valves (internal equalisation) and valves with MOP cannot be used for biflow operation Max test pressure p = 37 5 bar MOP valves When MOP valves are used, to avoid charge migration the bulb temperature must always be lower than the thermostatic element temperature MOP-points Range N Range NM Range B C C C Refrigerant MOP point for evaporating temperature t e and evaporating pressure p 1 e ) t e = +15 C/+60 F t e = 0 C/+32 F t e = -20 C/-4 F R 22 p e = 100 psig/6 9 bar p e = 60 psig/4 0 bar p e = 20 psig/1 5 bar R 134a p e = 55 psig/3 9 bar p e = 30 psig/1 9 bar R 404A / R507 p e = 120 psig/8 4 bar p e = 75 psig/5 0 bar p e = 30 psig/2 0 bar R 407C p e = 95 psig/6 6 bar p e = 50 psig/3 6bar p e = 20 psig/1 4 bar 1 ) p e in bar gauge Identification Main valve data is given on the element (fig 1), on the valve body (fig 2) and on the bottom of the orifice assembly (fig 3) Example valve body AE = Type (E = external pressure equalisation) 68U2214 = Code number R 134a = Refrigerant MOP 55 / +15 C = MOP-point in psig / C -40 / +10 C = Evaporating temperature range in C -40 / +50 F = Evaporating temperature range in F PB 34 bar/ MWP 500 psig = Max working pressure in bar/psig 182B = Date marking (week 18, year 2002, weekday B = Tuesday) Þ in = Normal flow direction = Connection in inches (mm = millimetres) Example orifice assembly = Valve type 5 = Orifice number 68U1035 = Code no, orifice assembly incl filter and gasket 327 = Date marking (Week 32, Year 1997) Fig 1 Power element Fig 2 Valve body Fig 3 Orifice assembly 14 Technical leaflet - RD1AC402 ã Danfoss A/S (RC-CM / MWA),

15 Thermostatic expansion valve, type A/AE Ordering, components with solder x solder connections Thermostatic element, without orifice and filter, with bulb strap R 22, R 134a, R 404A, R 407C, R 507 Refrigerant Valve Pressure Capillary Connections Code no type equaliz- tube ation 1) Inlet x outlet Range N Range NM Range B C 40 5 C C R 22 R 134a m in mm Without MOP MOP +15 C MOP 0 C Without MOP MOP 20 C A Int /4 x 1 /2 068U2234 A Int x U U U2246 A Int /8 x 1 /2 068U U2259 A Int x U U U U2263 AEExt 1 /4 in /4 x 1 /2 068U U2260 AEExt 6 mm x U U U2264 AEExt 1 /4 in /8 x 1 /2 068U2237 AEExt 6 mm x U U U U2265 A Int /4 x 1 /2 068U U2212 A Int x U U U2216 A Int /8 x 1 /2 068U U2213 A Int x U U U2217 AEExt 1 /4 in /4 x 1 /2 068U U2214 AEExt 6 mm x U U U2218 AEExt 1 /4 in /8 x 1 /2 068U U2215 AEExt 6 mm x12 068U U2219 A Int /4 x 1 /2 068U U U U U2316 A Int x U U2288 A Int /8 x 1 /2 068U U U U2317 R 404A A Int x U U U U U2313 R 507 AEExt 1 /4 in /4 x 1 /2 068U U U2318 AEExt 6 mm x U U U U2314 AEExt 1 /4 in /8 x 1 /2 068U U U U U2319 AEExt 6 mm x U U U U2307 R 407C A Int /4 x 1 /2 068U U U U2356 A Int x U U U U2344 A Int /8 x 1 /2 068U U U2357 A Int x U U U U U2353 AEExt 1 /4 in /4 x 1 /2 068U U2350 AEExt 6 mm x U U U2354 AEExt 1 /4 in /8 x 1 /2 068U U U2351 AEExt 6 mm x U U U U U2355 ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AC402 15

16 Thermostatic expansion valve, type A/AE Ordering (continued) Orifice assembly with filter and gasket Range N: C Orifice no Rated capacity in kw 1) Rated capacity in tons (TR) 1) Code no R 22 R 134a R 404A R 407C R 507 R 22 R 134a R 404A R 407C R U U U U U U U U U U1039 Range B: C 1 ) Rated capacity Q nom is based on: Evaporating temperature t e = +5 C for range N and 30 C for range B Condensing temperature t c = +32 C Refrigerant liquid temperature t l = +28 C Opening superheat OS = 4 K Orifice no Rated capacity in kw 1) Rated capacity in tons (TR) 1) Code no R 22 R 404A R 407C R 507 R 22 R 404A R 407C R U U U U U U U U U U1039 Spare parts Gasket (24 pcs): 068U0015 Note: to ensure tightness the orifice gasket must be exchanged each time the orifice assembly is unscrewed Filter (24 pcs): 068U Technical leaflet - RD1AC402 ã Danfoss A/S (RC-CM / MWA),

17 Thermostatic expansion valve, type A/AE Capacity Capacity in kw for range N = C and opening superheat OS = 4 K Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar R Evaporating temperature +10 C Evaporating temperature -10 C Evaporating temperature -30 C Evaporating temperature 0 C Evaporating temperature -20 C Evaporating temperature -40 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below Note: Insufficient subcooling can produce flash gas Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R Selection example Refrigerant = R 22 Evaporating temperature t e = -10 C Pressure drop in valve Dp = 10 bar Subcooling Dt sub = 15 K Evaporator capacity = 3 kw Correction value (table) = 1 11 The corrected evaporator capacity thus becomes 3 divided by 1 11 = 2 7 kw Since the expansion valve capacity must be equal to or slightly more than the corrected evaporator capacity of 2 7 kw, a B/BE with orifice 5 and a table capacity of 2 8 kw would be a suitable choice ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AC402 17

18 Thermostatic expansion valve, type A/AE Capacity (continued) Capacity in kw for range B = C and opening superheat OS = 4 K R 22 Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar Evaporating temperature -25 C Evaporating temperature -40 C Evaporating temperature -60 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below Evaporating temperature -30 C Evaporating temperature -50 C Note: Insufficient subcooling can produce flash gas Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R Technical leaflet - RD1AC402 ã Danfoss A/S (RC-CM / MWA),

19 Thermostatic expansion valve, type A/AE Capacity (continued) Capacity in kw for range N = C and opening superheat OS = 4 K Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar R 134a Evaporating temperature +10 C Evaporating temperature -10 C Evaporating temperature -30 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below Evaporating temperature 0 C Evaporating temperature -20 C Evaporating temperature -40 C Note: Insufficient subcooling can produce flash gas Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 134a ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AC402 19

20 Thermostatic expansion valve, type A/AE Capacity (continued) Capacity in kw for range N = C and opening superheat OS = 4 K R 404A/R 507 Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar Evaporating temperature +10 C Evaporating temperature -10 C Evaporating temperature -30 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below Evaporating temperature 0 C Evaporating temperature -20 C Evaporating temperature -40 C Note: Insufficient subcooling can produce flash gas Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 404A/R Technical leaflet - RD1AC402 ã Danfoss A/S (RC-CM / MWA),

21 Thermostatic expansion valve, type A/AE Capacity (continued) R 404A/R 507 Capacity in kw for range B = C and opening superheat OS = 4 K Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar Evaporating temperature -25 C Evaporating temperature -30 C Evaporating temperature -40 C Evaporating temperature -50 C Evaporating temperature -60 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below Note: Insufficient subcooling can produce flash gas Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 404A/R ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AC402 21

22 Thermostatic expansion valve, type A/AE Capacity (continued) Capacity in kw for range N = C and opening superheat OS = 4 K Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar R 407C Evaporating temperature +10 C Evaporating temperature -10 C Evaporating temperature -30 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below Evaporating temperature 0 C Evaporating temperature -20 C Evaporating temperature -40 C Note: Insufficient subcooling can produce flash gas Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 407C Technical leaflet - RD1AC402 ã Danfoss A/S (RC-CM / MWA),

23 Thermostatic expansion valve, type A/AE Capacity (continued) Capacity in kw for range B = C and opening superheat OS = 4 K Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar R 407C Evaporating temperature -25 C Evaporating temperature -30 C Evaporating temperature -40 C Evaporating temperature -50 C Evaporating temperature -60 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below Note: Insufficient subcooling can produce flash gas Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 407C ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AC402 23

24 Thermostatic expansion valve, type A/AE Capacity (continued) Capacity in kw for range N = -40 to +10 C and opening superheat OS = 4 K R 410A Type Orifice Pressure drop across valve Dp bar Pressure drop across valve Dp bar no Evaporating temperature +10 C Evaporating temperature 0 C Evaporating temperature -10 C Evaporating temperature -20 C Evaporating temperature -30 C Evaporating temperature -40 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below Note: Insufficient subcooling can produce flash gas Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 410A Technical leaflet - RD1AC402 ã Danfoss A/S (RC-CM / MWA),

25 Thermostatic expansion valve, type A/AE Design/ Function 1 Bulb with capillary tube 2 Thermostatic element with diaphragm 3 Setting spindle for adjustment of static superheat SS 4 Orifice assembly 5 Filter Fig 4 Fig 5 Superheat Superheat See fig 5 SS = static superheat OS = opening superheat SH = SS + OS = total superheat Q nom = rated capacity Q max = maximum capacity Static superheat SS can be adjusted with setting spindle 3, see fig 4 The standard superheat setting SS is 5 K for valves without MOP and 4 K for valves with MOP (except R 507) The opening superheat OS is 4 K from when opening begins to where the valve gives its rated capacity Q nom Example Static superheat Opening superheat Total superheat SS = 5 K OS = 4 K SH = = 9 K Dimensions and weight Connection dimensions, see ordering table Fig 6 Straightway Weight 0,16 kg ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AC402 25

26

27 Thermostatic expansion valve, type B/BE and C/CE Introduction The series of thermostatic expansion valves has been developed for soldering into hermetic refrigeration systems. valves are made of stainless steel and are therefore very suitable for use in the food industry. valves can be used in many forms of refrigeration systems, in particular: - Traditional refrigeration systems - Heat pump systems - Air conditioning units - Refrigeration appliances - Liquid coolers - Ice cube machines - Mobile refrigeration systems All variants are available in both single packs and industrial packs as required by the customer. B/BE have adjustable superheat and are available in angleway versions as standard. C/CE have fixed superheat, but are otherwise identical to B. All straightway versions and C valves are produced to order and therefore this catalogue contains no description of a standard range or code numbers. valves are also available in a number of variants that give countless combination possibilities. Contact Danfoss for further information. B/BE and C/CE can be delivered in straightway versions. Features Bimetal connections - straightforward and fast soldering (no wet cloth or refrigeration pliers required). Refrigerants R 22, R 134a, R 404A, R 507, R 407C, R 410A and future refrigerants Capacities from 0.6 to 16 kw (0.17 to 4.5 TR) for R 22 - large capacity range in small steps Stable regulation Biflow function (orifice 0 to 8) Compact design - small dimensions and low weight Stainless steel, hermetically tight solder version - high connection strength - high corrosion resistance - capillary tube joints of high strength and vibration resistance Laser-welded, stainless steel thermostatic diaphragm element - optimum function - long diaphragm life - high pressure resistance Stainless steel double contact bulb - straightforward and fast installation - good heat transfer from bulb to pipe Adjustable superheat type (B/BE) -accurate setting -adjustable in operation Fixed superheat type (C/CE) Filter with high dirt retention capacity Available with self-cleaning bleed Available with MOP (Max. Operating Pressure) ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AB402 27

28 Thermostatic expansion valve, type B/BE and C/CE Standard range Variant range For further information, please contact Danfoss. Versions available in the standard range: Range N : -40 to +10 C without MOP Static superheat (SS): R 22, R 134a, R 404A, R 407C, R 410A = 5 K R 507 = 6.4 K In addition to the standard range, B/BE and C/CE valves are also available in these variants and variant combinations: Straightway versions Range N C MOP +15 C Range NM C MOP 0 C Range B C Range B C MOP -20 C Valves to special temperature ranges can be supplied. Static superheat (SS): 2 K, 3 K, 4 K, or 6 K (applies to B/BE and C/CE see fig. 5) Capillary tube length: 0.8 m Connections: Inlet Orifice /4 in./6 mm Orifice /8 in./10 mm Outlet 1 /2 in./12 mm Capillary tube length: 1.5 m Bleed: 15% Connections: Inlet Orifice /8 in./10 mm Orifice /4 in./6 mm Straightway only 1 /2 in./12 mm Outlet 3 /8 in./10 mm Straightway only 5 /8 in./16 mm Capacity, orifice variants: In addition to the standard range, valves with orifice 0 are available for R 134a, R 404A and R 507. Technical data Max. bulb temperature 100 C Max. valve body temperature 120 C, short-lived peak 150 C Permissible working pressure (excl. R 410A) PB = 34 bar Max. working pressure, R 410A PB = 42.5 bar Max. test pressure (excl. R 410A) p = 37.5 bar Max. test pressure, R 410A p = 47 bar Biflow operation With flow in the opposite direction, the rated capacity is reduced by up to 15%. BE with orifice 9, B and valves with MOP charges cannot be used for biflow operation. MOP valves To avoid charge migration when MOP valves are used, the bulb temperature must be lower than the thermostatic element temperature. MOP-points Range N Range NM Range B C C C Refrigerant MOP point for evaporating temperature t e and evaporating pressure p 1 e ) t e = +15 C/+60 F t e = 0 C/+32 F t e = -20 C/-4 F R 22 p e = 100 psig/6.9 bar p e = 60 psig/4.0 bar p e = 20 psig/1.5 bar R 134a p e = 55 psig/3.9 bar p e = 30 psig/1.9 bar R 404A / R 507 p e = 120 psig/8.4 bar p e = 75 psig/5.0 bar p e = 30 psig/2.0 bar R 407C p e = 95 psig/6.6 bar p e = 50 psig/3.6 bar p e = 15 psig/1.1 bar R 410A p e = 165 psig/11.5 bar p e = 100 psig/7.0 bar p e = 45 psig/3.0 bar 1 ) p e in bar gauge 28 Technical leaflet - RD1AB402 ã Danfoss A/S (RC-CM / MWA),

29 Thermostatic expansion valve, type B/BE and C/CE Identification Main valve data is given on the element (fig. 1) and on the valve body (fig. 2). Valves with bleed are marked on the element: BP 15 (= 15% bleed of nominal capacity). For valves with fixed superheat setting (type C/CE) the superheat is printed on the element (e.g. SS 5 C / 9 F) Main valve data example, fig. 1 BE = Type (E = external pressure equalisation) 68U2167 = Code number R 22 = Refrigerant MOP 100 / +15 C = MOP-point in psig / C -40 / +10 C = Evaporating temperature range in C -40 / +50 F = Evaporating temperature range in F PB 34 bar/ MWP 500 psig = Max. working pressure 182B = Date marking (week 18, year 2002, weekday B = Tuesday) Fig. 1 Main valve data example, fig. 2 Þ = Normal flow direction IN = Connection in inches (MM = millimetres) ORIF7 = Orifice number TR = Rated capacity Q nom. in Tons of Refrigeration 7.0 kw = Rated capacity Q nom. in kw Fig. 2 ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AB402 29

30 Thermostatic expansion valve, type B/BE and C/CE Ordering Angleway Supplied with bulb strap Standard valve range 1 ) Rated capacity Q nom. is based on: Evaporating temperature t e = +5 C Condensing temperature t c = +32 C Refrigerant liquid temperature t l = +28 C Opening superheat OS = 4 K 2 ) BE with orifice 9 and B (internal pressure equalisation) cannot be used for biflow operation. Range N = C R 22, R 134a, R 404A/R 507 Refri- Type Rated Orifice Pres- Connection gerant capacity no. 2 ) sure Inlet Outlet Q 1 nom. ) equalikw TR sation inch Code no. mm Code no. B int. 1 /4 1 /2 068U U2036 B int. 1 /4 1 /2 068U U2037 B int. 1 /4 1 /2 068U U2038 B int. 1 /4 1 /2 068U2059 B int. 1 /4 1 /2 068U2060 B int. 1 /4 1 /2 068U U2041 B int. 1 /4 1 /2 068U2062 B int. 3 /8 1 /2 068U U2043 B int. 3 /8 1 /2 068U U2044 B int. 3 /8 1 /2 068U U2045 R 22 BE ext. BE ext. BE ext. BE ext. 1 /4 1 /2 068U U2049 BE ext. 1 /4 1 /2 068U U2050 BE ext. 1 /4 1 /2 068U U2051 BE ext. 1 /4 1 /2 068U U2052 BE ext. 3 /8 1 /2 068U U2053 BE ext. 3 /8 1 /2 068U U2054 BE ext. 3 /8 1 /2 068U U2055 B int. 1 /4 1 /2 068U U2000 B int. 1 /4 1 /2 068U U2001 B int. 1 /4 1 /2 068U U2002 B int. 1 /4 1 /2 068U U2003 B int. 1 /4 1 /2 068U U2004 B int. 1 /4 1 /2 068U U2005 B int U2006 B int U2007 B int U2008 R 134a BE ext. BE ext U2010 BE ext. 1 /4 1 /2 068U2020 BE ext U2012 BE ext. 1 /4 1 /2 068U2022 BE ext U2014 BE ext. 3 /8 1 /2 068U U2015 BE ext. 3 /8 1 /2 068U U2016 BE ext. 3 /8 1 /2 068U U2017 B int. 1 /4 1 /2 068U U2076 B int. 1 /4 1 /2 068U U2077 B int. 1 /4 1 /2 068U U2078 B int. 1 /4 1 /2 068U U2079 B int. 1 /4 1 /2 068U U2080 B int. 1 /4 1 /2 068U2099 B int U2082 B int. B int U2084 R 404A BE ext. 1 /4 1 /2 068U U2085 R 507 BE ext. 1 /4 1 /2 068U2104 BE ext. 1 /4 1 /2 068U U2087 BE ext. 1 /4 1 /2 068U U2088 BE ext. 1 /4 1 /2 068U U2089 BE ext. 1 /4 1 /2 068U U2090 BE ext. 3 /8 1 /2 068U2109 BE ext. 3 /8 1 /2 068U2110 BE ext. 3 /8 1 /2 068U2111 Valves with inch connections have 1 /4 in. pressure equalisation. Valves with mm connections have 6 mm pressure equalisation. 30 Technical leaflet - RD1AB402 ã Danfoss A/S (RC-CM / MWA),

31 Thermostatic expansion valve, type B/BE and C/CE Ordering Angleway Supplied with bulb strap Standard valve range 1 ) Rated capacity Q nom. is based on: Evaporating temperature t e = +5 C Condensing temperature t c = +32 C Refrigerant liquid temperature t l = +28 C Opening superheat OS = 4 K 2 ) BE with orifice 9 and B (internal pressure equalisation) cannot be used for biflow operation. Range N = C R 407C, R 410A Refri- Type Rated Orifice Pres- Connection gerant capacity no. 2 ) sure Inlet Outlet Q 1 nom. ) equalikw TR sation inch Code no. mm Code no. B int. 1 /4 1 /2 068U U1900 B int. 1 /4 1 /2 068U U1901 B int. 1 /4 1 /2 068U U1902 B int. 1 /4 1 /2 068U U1903 B int. 1 /4 1 /2 068U U1904 B int. 1 /4 1 /2 068U U1905 B int. 1 /4 1 /2 068U U1906 B int. 3 /8 1 /2 068U U1907 B int. 3 /8 1 /2 068U U1908 B int. 3 /8 1 /2 068U U1909 R 407C BE ext. 1 /4 1 /2 068U U1910 BE ext. 1 /4 1 /2 068U U1911 BE ext. 1 /4 1 /2 068U U1912 BE ext. 1 /4 1 /2 068U U1913 BE ext. 1 /4 1 /2 068U U1914 BE ext. 1 /4 1 /2 068U U1915 BE ext. 1 /4 1 /2 068U U1916 BE ext. 3 /8 1 /2 068U U1917 BE ext. 3 /8 1 /2 068U U1918 BE ext. 3 /8 1 /2 068U U1919 B int. 1 /4 1 /2 068U U1796 B int. 1 /4 1 /2 068U U1940 B int. 1 /4 1 /2 068U U1941 B int. 1 /4 1 /2 068U U1942 B int. 1 /4 1 /2 068U U1943 B int. 1 /4 1 /2 068U U1944 B int. 1 /4 1 /2 068U U1945 B int. 3 /8 1 /2 068U U1946 B int. 3 /8 1 /2 068U U1947 B int. 3 /8 1 /2 068U U1948 R 410A BE ext. 1 /4 1 /2 068U U1797 BE ext. 1 /4 1 /2 068U U1949 BE ext. 1 /4 1 /2 068U U1950 BE ext. 1 /4 1 /2 068U U1951 BE ext. 1 /4 1 /2 068U U1952 BE ext. 1 /4 1 /2 068U U1953 BE ext. 1 /4 1 /2 068U U1954 BE ext. 3 /8 1 /2 068U U1955 BE ext. 3 /8 1 /2 068U U1956 BE ext. 3 /8 1 /2 068U U1957 Valves with inch connections have 1 /4 in. pressure equalisation. Valves with mm connections have 6 mm pressure equalisation. ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AB402 31

32 Thermostatic expansion valve, type B/BE and C/CE Capacity Capacity in kw for range N = C and opening superheat OS = 4 K Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar R Evaporating temperature +10 C Evaporating temperature -10 C Evaporating temperature -30 C Evaporating temperature 0 C Evaporating temperature -20 C Evaporating temperature -40 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R Selection example Refrigerant = R 22 Evaporating temperature t e = -10 C Pressure drop in valve Dp = 10 bar Subcooling Dt sub = 15 K Evaporator capacity = 3 kw Correction value (table) = 1.11 The corrected evaporator capacity thus becomes 3 divided by 1.11 = 2.7 kw Since the expansion valve capacity must be equal to or slightly more than the corrected evaporator capacity of 2.7 kw, a B/BE with orifice 5 and a table capacity of 2.8 kw would be a suitable choice. 32 Technical leaflet - RD1AB402 ã Danfoss A/S (RC-CM / MWA),

33 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range B = C and opening superheat OS = 4 K R 22 Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar Evaporating temperature -25 C Evaporating temperature -40 C Evaporating temperature -60 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Evaporating temperature -30 C Evaporating temperature -50 C Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AB402 33

34 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range N = C and opening superheat OS = 4 K Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar R 134a Evaporating temperature +10 C Evaporating temperature -10 C Evaporating temperature -30 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Evaporating temperature 0 C Evaporating temperature -20 C Evaporating temperature -40 C Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 134a Technical leaflet - RD1AB402 ã Danfoss A/S (RC-CM / MWA),

35 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range N = C and opening superheat OS = 4 K Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar R 404A/R Evaporating temperature +10 C Evaporating temperature -10 C Evaporating temperature -30 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Evaporating temperature 0 C Evaporating temperature -20 C Evaporating temperature -40 C Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 404A/R ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AB402 35

36 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range B = C and opening superheat OS = 4 K R 404A/R 507 Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar Evaporating temperature -25 C Evaporating temperature -30 C Evaporating temperature -40 C Evaporating temperature -50 C Evaporating temperature -60 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 404A/R Technical leaflet - RD1AB402 ã Danfoss A/S (RC-CM / MWA),

37 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range N = C and opening superheat OS = 4 K Type Orifice Pressure drop across valve Dp bar no Pressure drop across valve Dp bar R 407C Evaporating temperature +10 C Evaporating temperature -10 C Evaporating temperature -30 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Evaporating temperature 0 C Evaporating temperature -20 C Evaporating temperature -40 C Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 407C ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AB402 37

38 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range B = C and opening superheat OS = 4 K Type Orifice Pressure drop across valve Dp bar no Pressure drop across valvel Dp bar R 407C Evaporating temperature -25 C Evaporating temperature -30 C Evaporating temperature -40 C Evaporating temperature -50 C Evaporating temperature -60 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 407C Technical leaflet - RD1AB402 ã Danfoss A/S (RC-CM / MWA),

39 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range N = -40 to +10 C and opening superheat OS = 4 K R 410A Type Orifice Pressure drop across valve Dp bar Pressure drop across valve Dp bar no Evaporating temperature +10 C Evaporating temperature 0 C Evaporating temperature -10 C Evaporating temperature -20 C Evaporating temperature -30 C Evaporating temperature -40 C Correction for subcooling Dt sub The evaporator capacity used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling Dt sub Dt sub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K R 410A ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AB402 39

40 Thermostatic expansion valve, type B/BE and C/CE Design/ Function 1. Bulb with capillary tube 2. Thermostatic element with diaphragm 3. Setting spindle for adjustment of static superheat SS 4. Fixed orifice 5. Filter Fig. 3. Angleway Superheat, B See fig. 5 SS = static superheat OS = opening superheat SH = SS + OS = total superheat Q nom = rated capacity Q max = maximum capacity Static superheat SS can be adjusted with setting spindle 3, see fig. 3 (B). Static superheat cannot be adjusted on C. The standard superheat setting SS is 5 K for valves without MOP and 4 K for valves with MOP. The opening superheat OS is 4 K from when opening begins to when the valve gives its rated capacity Q nom.. Example Static superheat SS = 5 K Opening superheat OS = 4 K Total superheat SH = = 9 K Fig. 4. Straightway Fig. 5. Superheat 40 Technical leaflet - RD1AB402 ã Danfoss A/S (RC-CM / MWA),

41 Thermostatic expansion valve, type B/BE and C/CE Dimensions and weight Connection dimensions, see ordering tables. Fig. 6. Angleway Weight 0.13 kg Connection dimensions, see ordering tables. Fig. 6. Straightway Weight 0.13 kg ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AB402 41

42

43 Thermostatic expansion valve, type TC Introduction The TC thermostatic expansion valve has been developed and designed for soldering into hermetic refrigeration systems It is manufactured in stainless steel and is therefore very suitable for installation in refrigeration systems for the food industry TC can be used in many different forms of refrigeration system, in particular: - Mobile refrigeration equipment - Air conditioning units - Heat pump systems - Refrigeration appliances - Liquid coolers - Ice cube machines - Traditional refrigeration systems All variants are available in both singlepacks and industrial packs as required by the customer TCAE with interchangeable orifice assembly and adjustable superheat TCBE with fixed orifice assembly and adjustable superheat TCCE with fixed superheat, otherwise it is identical with TCBE All types are straightway versions TCCE is manufactured to order, and consequently this technical leaflet contains no description of standard range and code numbers TC is also available in a range of variants that give countless valve combination possibilities Contact Danfoss for further information Features Bimetal connections - straightforward and fast soldering (no wet cloth or cooling pliers required) Refrigerants R 22, R 134a, R 404A, R 507, R 407C, R 410A and future refrigerants Capacities from 17 5 to 26 5 kw (5 0 to 7 5 TR) for R 22 Stable regulation Biflow function (orifice 1 and 2) Compact design - small dimensions and low weight Stainless steel, hermetically tight solder version - high connection strength - high corrosion resistance - capillary tube joints of high strength and vibration resistance Laser-welded, stainless steel thermostatic diaphragm element - optimum function - long diaphragm life - high pressure resistance Stainless steel double contact bulb - straightforward and fast installation - good heat transfer from bulb to pipe Adjustable superheat type (TCAE/TCBE) - accurate setting - adjustable in operation Fixed superheat type (TCCE) Filter with high dirt retention capacity Available with self-cleaning bleed Available with MOP (Max Operating Pressure) Standard range, TCAE Versions available in the standard range Ranges for R22, R134a, R404A, R507, R407C and R 410A: N C without MOP N C MOP + 15 C NM C MOP + 0 C Ranges for R404A og R507 B C without MOP B C MOP -20 C Static superheat (SS) for R22, R134a, R404A, R407C, R410A Valves without MOP: 5 K Valves with MOP: 4 K Static superheat (SS) for R507 Valves without MOP: 6 4 K Valves with MOP: 5 4 K Capillary tube length 1 5 m Connections: Inlet Outlet 3 /8 in /10 mm 1 /2 in /12 mm 5 /8 in /16 mm ã Danfoss A/S (RC-CM / MWA), Technical leaflet - RD1AN302 43