Application technology, 5th edition. Volume III: Fonterra radiant heating and cooling

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Ernest Bartholomew Short
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1 Application technology, 5th edition Volume III: Fonterra radiant heating and cooling

Regulation components, manifolds and manifold cabinets Regulation components, manifolds and manifold cabinets

out the hydraulic calibration required by law in a fully automated process, ensuring agreeable temperatures and

The components are mounted ready-to-plug at the manifold in the concealed manifold cabinet.

2 Regulation components, manifolds and manifold cabinets Regulation components, manifolds and manifold cabinets System description is a completely new type of single room regulation in radiant heating and cooling; it carries out the hydraulic calibration required by law in a fully automated process, ensuring agreeable temperatures and optimum calibration of the heat distribution systems at all times. The components are mounted ready-to-plug at the manifold in the concealed manifold cabinet. The owner can operate them via any WLAN-capable end device by means of the browser-based user interface. Fig. 244: Operation via smartphone Fig. 245: components Easy operation provides for maximum user comfort, for example quick-action heating for priority rooms, temperature preservation at floor level, or absence mode for energy saving. Fig. 246: Temperature regulation Fig. 247: Individual heating profiles 297

Application technology: Fonterra radiant heating and cooling Fast reaction time without over- and undershooting Features WLAN-capable complete system, can be parameterised from any location

3 Application technology: Fonterra radiant heating and cooling Fast reaction time without over- and undershooting Features WLAN-capable complete system, can be parameterised from any location world-wide via smartphone, tablet or laptop (remote diagnosis available). Easy mounting (ready to plug) and installation (plug & play); clean installation without any cable laying. Perfect for refurbishment and reconstruction Automatic adjustment of the system to the prevailing conditions (floor covering, heating circuit lengths, screed heights and external heat sources) Individual demand-driven heat output with special functions, allowing for energy savings of up to 20% Very fast reaction time without over- and undershooting Five regulation parameters for permanent hydraulic calibration of the system Attractive subsidies available from funding programs offered by German institutions Bafa and KfW regulation strategy Via five regulation parameters, continuous precise compensation is performed for each individual heating circuit, avoiding over- and undershooting of the regulation and the loss of energy and comfort. In addition to the supply temperature, the return temperature in every heating circuit and the three room temperature values are measured Fig. 248: Fast reaction time without over- and undershooting t Key 1 2 Standard regulation 3 Time advantage due to 298

4 Regulation components, manifolds and manifold cabinets System components Main components room thermostat basic unit temperature measuring point actuator module actuator WLAN module radio amplifier Accessories power pack connection line window contact connection line RS 232 ribbon cable Sensor dewpoint sensor 299

5 Application technology: Fonterra radiant heating and cooling System components Name room thermostat basic unit temperature measuring point actuator module actuator WLAN module radio amplifier power pack dewpoint sensor connection line window contact connection line RS 232 ribbon cable sensor Article number (black) / (white) (black) / (white) Tab. 119 System components 300

6 Regulation components, manifolds and manifold cabinets Standard regulations Standard regulations To meet the high requirements in function, residential comfort, cosiness and ease of operation of surface heating systems, the Viega system portfolio provides a variety of regulation and control units. Overview of regulation components Room thermostats Room thermostat 230 V Art. no Room thermostat 24 V Art. no Basic units Room thermostat 230 V Art. no Basic unit 230 V / 24 V Art. no Basic unit 230 V with pump module Art no Actuators Actuator 230 V Art. no Actuator 24 V Art. no

7 Application technology: Fonterra radiant heating and cooling Control stations Compact control station Preset value Art. no Manifold control station Preset value Art. no Small surface control station Art. no Multibox combi RTL Art. no Return temperature Limiter set Art. no manifold Differential pressure regulator Art. no Manifold mod Industry manifold mod Manifold cabinets Manifold cabinets, concealed Installation depth mm mod Manifold cabinets, concealed Installation depth mm mod Manifold cabinets, wallmounted mod

Regulation components, manifolds and manifold cabinets Room thermostats Room thermostats 14 (2) EnEV specifies that when installing heating systems using water as a heat carrier in buildings, devices

8 Regulation components, manifolds and manifold cabinets Room thermostats Room thermostats 14 (2) EnEV specifies that when installing heating systems using water as a heat carrier in buildings, devices for automatically controlling the temperature separately for each room must be provided. Room thermostat 230 V / 24 V Room thermostat 230 V / 24 V Fig. 249: Room thermostat 230 V / 24 V Electronic room thermostats in 230 V and 24 V versions detect the room temperature and control the supply of heat to the room. Room thermostat 230 V 24 V Operating voltage 230 V, 50 / 60 Hz 24 V AC, 50 / 60 Hz Switching current 1.8 A (resistive load) 1.0 A (resistive load) Switching capacity max. 10 actuators max. 5 actuators Switching output Relay Triac Normal operation C Deviation from setpoint max. ± 0.5 K Lowering through external switching signal approx. 2 K / 20 C IP Code IP 30 Protection class II III Ambient temperature 0 50 C relative humidity max. 80 % Technical data room thermostat Dimensions H / W / D (mm) 82 / 82 / 26 Weight 69 g 62 g CE conformity EN Casing colour Signal white Terminal 5-pole usable line cross-sections 5-wire mm² Mounting type Wall-mounted on socket Art. no. room thermostat Tab. 120 Technical data room thermostat 303

Application technology: Fonterra radiant heating and cooling Clock thermostat 230 V Clock thermostat 230 V > L/L1 > > C 1 2 1 2 a b L/L1 1 2 1 2 c d CO N /L2 ext. 1 ext. 2 Fig.

9 Application technology: Fonterra radiant heating and cooling Clock thermostat 230 V Clock thermostat 230 V > L/L1 > > C a b L/L c d CO N /L2 ext. 1 ext. 2 Fig. 250: Clock thermostat 230 V Technical data Clock thermostat 304 Whereas room thermostats interrupt the power supply when the set room temperature is reached, clock thermostats furthermore allow the user to assign different heating intervals to individual rooms. Clock thermostat 230 V Operating voltage 230 V AC 50 Hz Power supply via basic unit Fuse T1AH Contact element Relay Switching capacity 1 A resistive load Nominal current without drives 2 ma Power consumption in idle state < 0.3 W Setting range target temperature 5 30 C Temperature measurement 0 40 C Ambient temperature 0 50 C Lowering balance Can be set for night and day temperature Correction actual-setpoint temperature measurement ± 2 C Change-Over input electronic/potential-free Block cooling yes Valve protection function every 14 days for 10 minutes Ambient temperature: 0 50 C Storage temperature C Admissible ambient humidity: 80% not condensed CE conformity according to EN IP Code IP 20 Protection class II Degree of contamination 2 Dimensions H / W / D 86 / 86 / 31 mm Casing colour Signal white Terminal 8 clamps mm² Weight 105 g Mounting type Wall-mounted on socket Art. no. room thermostat Tab. 121 Technical data clock thermostat

10 Regulation components, manifolds and manifold cabinets Basic units Basic units Basic units simplify mounting and wiring of the regulation components for comfortable single room regulation. They serve as interface and communication point between actuator and room thermostat. Basic unit 230 V / 24 V Basic unit 230 V / 24 V Fig. 251: Basic unit 230 V / 24 V Basic unit 230 V 24 V Operating voltage 230 V, 50 Hz 24 V, 50 Hz Power supply Euro plug via external voltage supply source max. power consumption 50 VA 36 VA Fuse T4AH T2A Number of heating zones 6 No. of room thermostats max. 6 No. of actuators max. 15 Switch-on current per actuator max. 500 ma Nominal load of all drives max. 24 W Direction of operation NC Storage temperature C Ambient temperature 0 50 C relative humidity 1) max. 80 % Degree of contamination 2 ErP class acc. to EU 811/2013 1=1 % Protection class II III IP Code IP 20 Terminals screwless terminal technology mm² Connection line massive: YM-J / NYM-o (max. 5 x 1.5 mm²) flexible: H03V2V2H2-F / H05V2V2H2-F Dimensions (H / L / D) 90 x x 52 mm CE conformity in acc. with EN Art. no. basic unit Tab. 122: Technical data basic unit 1) non-condensing Technical data basic unit 305

11 Application technology: Fonterra radiant heating and cooling Selection 24 V or 230 V fuse T2A T4AH 24 V 230 V Fig. 252: Selection fuse 24 V or 230 V, depending on operating mode. Connection diagram A Connection diagram viega L/L1 HZ 1 HZ 2 HZ 3 HZ 4 HZ 5 HZ 6 HZ 7 HZ 8 HZ 9 HZ 10 L/L1 L/L1 L/L1 L/L1 L/L1 L/L1 L/L1 L/L1 L/L1 L/L1 230V L N L N 24V L1 L2 L1 L2 TB %H A B CO A CO A A A CO CO CO A B CO CO B B B B CO CO CO CO NO Nachlaufzeit Shut-down delay 0min 5min 24V T2A 230V T4A H 8..9mm NC min 15min mm ~ L/L1 Fig. 253: Connection diagram for the basic units model 1246 ~ Voltage source External system clock Analogue controller Heating Actuator 306

12 Regulation components, manifolds and manifold cabinets Basic units Basic unit 230 V with pump module Basic unit heating/cooling Fig. 254: Basic unit heating/cooling An existing changeover contact provides for external changeover between heating and cooling modes. Basic unit 230 V with pump module Operating voltage 230 V, 50 Hz Power supply Euro plug via external power source max. power consumption 50 VA Fuse T4AH Number of heating zones 6 No. of room thermostats max. 6 No. of actuators max. 15 Max. switch-on current per actuator 500 ma Max. nominal load of all drives max. 24 W Direction of operation NC Storage temperature C Ambient temperature 0 50 C relative humidity 1) max. 80 % Degree of contamination 2 ErP class acc. to EU 811/2013 1=1 % Protection class II IP Code IP 20 Terminals screwless terminal technology mm² Connection line massive: YM-J / NYM-o (max. 5 x 1.5 mm²) flexible: H03V2V2H2-F / H05V2V2H2-F Dimensions (H / L / D) 90 x x 52 mm CE conformity in acc. with EN Art. no. basic unit Pump control yes Technical data basic unit 230 V with pump module Tab. 123: Technical data basic unit heating/cooling 1) Pump module with potential-free contact, via relay 2) non-condensing 307

13 Mo Tu We Th Fr Sa Su A A Application technology: Fonterra radiant heating and cooling Connection diagram Connection diagram viega L/L1 CO L/L1 HZ 1 HZ 2 HZ 3 HZ 4 HZ 5 HZ 6 HZ 7 HZ 8 HZ 10 L/L1 L/L1 L/L1 L/L1 L/L1 L/L1 L/L1 L/L1 L/L1 L/L1 230V L N L N 24V L1 L2 L1 L2 TB %H A B CO A CO A A A CO CO CO A B CO CO B B B B CO CO CO CO NO Nachlaufzeit Shut-down delay 0min 5min 24V T2A 230V T4A H 8..9mm NC min 15min mm CO L/L1 PE PE ~ L/L1 %H N L Fig. 255: Connection diagram for the basic unit model Digital controller Analogue controller Temperature limiter System clock Actuator CO Changeover contact pump Cooling ~ Voltage source Heating 308

Regulation components, manifolds and manifold cabinets Basic units Actuators Thermal actuators are available in the versions 230 V or 24 V, closed in de-energised state. Actuators Fig.

14 Regulation components, manifolds and manifold cabinets Basic units Actuators Thermal actuators are available in the versions 230 V or 24 V, closed in de-energised state. Actuators Fig. 256: Actuators Actuator 230 V 24 V Technical data actuators Operating voltage 230 V AC 24 V AC Switch-on current max. 200 ma 230 ma Operating capacity 2 W Opening and closing time < 5 min Displacement > 3.5 mm Pulling load 80 N +15 /-10 N Ambient temperature max. 60 C Protection class 1) / IP Code IP 54/II CE conformity EN Casing colour RAL 9010 Version Closed in de-energized state Weight approx. 100 g Connection line 1 m 2 x 0.75 mm² Article no Tab. 124: Technical data 1) in all installation situations 309

Application technology: Fonterra radiant heating and cooling Manifold control stations Compact control station preset value The compact control station is used in heating systems whose heat output

15 Application technology: Fonterra radiant heating and cooling Manifold control stations Compact control station preset value The compact control station is used in heating systems whose heat output takes place on the one hand via consumers with a high supply temperature (e. g. radiators) and on the other hand via low-temperature heating surfaces (e. g. underfloor or wall heating). It has a mixer valve for regulating preset values without auxiliary energy and is used centrally to a maximum power requirement of 15 kw. Compact control station preset value Fig. 257: Compact control station preset value System benefits High-efficiency pump Thermometer in supply and return flow Compact control station incl. insulating shell, ready for assembly Three-way valve with preset value regulation without auxiliary energy Maximum temperature limiter With gravity brake 310

16 Regulation components, manifolds and manifold cabinets Manifold control stations Dimension Wilo high-efficiency pump Maximum permitted operating temperature DN25 Yonos PARA RS 25 / 6 RKA 95 C Minimum permitted operating temperature 1) -20 C Maximum permitted operating pressure 1 MPa (10 bar) Technical data Nominal heating capacity Power consumption pump Delivery height pump Flow volume pump Height incl. insulating shell Width incl. insulating shell Depth incl. insulating shell with wall bracket Screw fitting flat sealing 15 kw 3 45 W max. 6.2 m max. 3.3 m³ / h 355 mm 250 mm 190 mm 235 mm R 1½ inch Art. no. control station Tab. 125: Technical data 1) With fluid temperatures below 20 C, take potential condensation into consideration. Furthermore, use suitable cooling brines if the temperature of the fluid drops below the water freezing point. -c (constant) H/m ,5 1,0 1,5 2,0 2,5 3,0 p/kpa Q/m³/h Pump diagram compact control station Fig. 258: Pump diagram compact control station 311

Application technology: Fonterra radiant heating and cooling Manifold control station preset value Manifold control station preset value Since the maximum floor surface temperature is limited by

17 Application technology: Fonterra radiant heating and cooling Manifold control station preset value Manifold control station preset value Since the maximum floor surface temperature is limited by standards and by building physics (to 29 C in living rooms, 33 C in bathrooms and 40 C for wall heatings), the supply temperature must be kept at a correspondingly low value. In systems with high supply temperatures, this can for example be achieved by so-called manifold control stations. They monitor the supply temperature and prevent overheating of the heating surface by closing a valve. To achieve the nominal heating capacity, the pressure difference between the boiler circuit and the surface heating must be minimum 200 hpa. Fig. 259: Manifold control station preset value Mounting to the manifold model 1005 System benefits Compact preset value manifold station incl. ball valve and 1-inch double nipple set, ready for assembly High-efficiency pump and maximum temperature limiter are factory wired. Can be mounted to the manifold on the left or right side Fig. 260: Mounting to the manifold model 1005 When installing the preset value control station, ensure that the supply/return flow manifold bars are mounted according to the enclosed mounting instructions (return flow bottom position/supply flow top position). 312

18 Regulation components, manifolds and manifold cabinets Manifold control stations Dimension DN 20 Maximum permitted operating temperature 80 C Minimum permitted operating temperature -10 C Maximum permitted operating pressure 0.6 MPa (6 bar) Control range C Power consumption pump Delivery height pump Flow volume pump Height Width Connections, flat sealing Nominal heating capacity Wilo high-efficiency pump Art. no. constant temperature control station 3 45 W max. 6.2 m max. 3.3 m³ / h 328 mm 192 mm R 1 inch approx. 14 kw Yonos PARA RS15 / 6 RKA FS Technical data Tab. 126: Technical data 1) boiler side 2) With use of suitable anti-freeze. For the permissible minimum operating temperatures of the circulation pumps, see the manufacturer's information. -c (constant) H/m ,5 1,0 1,5 2,0 2,5 3,0 p/kpa Q/m³/h Pump diagram preset value control station Fig. 261: Pump diagram preset value control station 313

19 Application technology: Fonterra radiant heating and cooling Small surface control station Small surface control station Fig. 262: Small surface control station The small surface control station is intended for regulating the supply temperature of surface heating systems at a preselected fixed target value. The target value can be set continuously between 20 and 70 C at the thermostat head. The small surface control station is used in systems whose consumers (e. g. radiators) are replaced by low-temperature heating surfaces. The supply temperature of the heating circuits is kept constant in the small surface control station by controlled addition of hot water from the heat generator. The target value for the supply temperature is set at the thermostat head. In case of malfunction, an additional temperature limiter switches the pump off when overtemperature of the fluid is present, thus preventing damage to the surface heating. If the small surface control station is to be regulated additionally via a target value (room temperature), we recommend to use a thermostat valve in combination with a basic unit. System benefits Readily mounted and wired in the built-in cabinet For heating areas up to 40 m² Suitable for up to 4 heating circuits Incl. Wilo high-efficiency pump Temperature regulation for an individual room can be connected via room thermostat and actuator. Concealed manifold cabinet for pre-wall systems 314

20 Regulation components, manifolds and manifold cabinets Manifold control stations Dimension Maximum permitted operating temperature Maximum permitted operating pressure DN15 80 C 0.6 MPa (6 bar) Technical data Control range C Height Width Depth Euro cone connections Wilo high-efficiency pump Pump capacity Nominal heating capacity approx. 480 mm approx. 430 mm approx. 115 mm R ¾ inch Yonos PARA RS15 / 6 RKA FS W max. 3 kw Art. no. small surface control station Tab. 127: Technical data [hpa] g Residual delivery height small surface control station K vs = 2.47 m 3 /h 1 e d c b a f Fig. 263: Performance diagram small surface control station 2 Key 1 Residual delivery height 2 Flow volume Levels (residual delivery height): a = level 1 b = level 2 c = level 3 d = level 4 e = level 5 f = level 6 g = level 7 315

A decentralised dynamic differential pressure regulation is required because the mass flows vary due to the constantly changing conditions.

21 Application technology: Fonterra radiant heating and cooling Differential pressure regulator Differential pressure regulator Fig. 264: Differential pressure regulator The intactness of the hydraulics of the system is an important precondition for its regulation behaviour. A decentralised dynamic differential pressure regulation is required because the mass flows vary due to the constantly changing conditions. The differential pressure regulator is a high-performance differential pressure regulator which keeps the differential pressure constant via the load. Thanks to the pressure-relieved valve cone, an accurate differential pressure regulation is possible; the integrated locking function makes maintenance easy. Please observe the enclosed instructions for use regarding flow direction, installation situation etc. Technical data, differential pressure regulator Differential pressure regulator Lockable yes Dimension DN25 Pressure class PN 16 Max. differential pressure (Δpv) 250 kpa Setting range (Δp) 10* 60 kpa Permitted operating temperature C Height 141 mm Length 93 mm Diameter of pipe connection G1 Tab. 128: Technical data, differential pressure regulator (*factory setting) Technical data, circulation regulation valve Circulation regulation valve Lockable yes Dimension DN25 Pressure class PN 20 Permitted operating temperature C Height 105 mm Length 110 mm Diameter of pipe connection G1 Tab. 129:Technical data, circulation regulation valve 316

22 Regulation components, manifolds and manifold cabinets Manifold control stations Installation situations The circulation regulation valve is installed in the supply line, the differential pressure regulator in the return flow in the specified flow direction. The top of the differential pressure regulator is rotatable. Installation position A Fig. 265: Installation position A Installation position B Fig. 266: Installation position B 317

Application technology: Fonterra radiant heating and cooling Heat meter set Fig. 267: Heat meter set, vertical Heat meter set 109 194 35 G1 108 233 G1 69 G1 G1 Fig. 268: Heat meter set, vertical Fig.

23 Application technology: Fonterra radiant heating and cooling Heat meter set Fig. 267: Heat meter set, vertical Heat meter set G G1 69 G1 G1 Fig. 268: Heat meter set, vertical Fig. 269: Heat meter set, horizontal To record the quantities of heat used, heat flow meters must be installed in larger housing units. They are adjusted for use in surface heating manifolds and suitable for commercially available heat flow meters with installation lengths 110 or 130 mm. Technical data Heat meter set Installation length G ¾ inch 110 mm Installation length G 1 inch 130 mm max operating pressure 1 MPa max. operating temperature 95 C External thread G1 inch Connection of measuring probe Ø 5.6 mm, M10 Tab. 130: Technical data, heat meter set 318

24 Regulation components, manifolds and manifold cabinets Manifold Manifold Manifold DN25 Manifold DN25 Fig. 270: Manifold DN25 (model 1005) Features Stainless steel with union nut DN25 Connection can be made on left or right side Flow sensor in supply line, can be locked individually and adjusted from 0 to 5 l/min Suitable for actuators M 30 x 1.5 Manifold incl. fan, plug, and KFE taps Heating circuit connection ¾ inch euro cone incl. wall brackets End cap ¾ inch Stainless steel manifold 1 inch with flow sensor, without thermometer Fig. 271: Stainless steel manifold 1 inch, with flow sensor, without thermometer 319

Application technology: Fonterra radiant heating and cooling Dimensions model 1005 HC [number] Manifold lengths 2 3 4 5 6 7 8 9 10 11 12 L 1 [mm] 50 L 2 [mm] 242 242 292 342 392 442 492 542 592 642

25 Application technology: Fonterra radiant heating and cooling Dimensions model 1005 HC [number] Manifold lengths L 1 [mm] 50 L 2 [mm] Tab. 131: Dimensions model 1005 As accessory to a manifold outlet, an extension set model is available. Please take the larger installation length in the concealed manifold cabinet into consideration. industry manifold Viega industry manifolds are suitable for use in heating systems according to DIN EN for connection of heating circuits under the specified operating conditions. The manifold can be mounted in vertical position, with outlet facing up or down, or in horizontal position at a storey floor. Industry manifold 1½ inch with regulating spindle Fig. 272: Industry manifold 1½ inch with regulating spindle (model 1007) Features Stainless steel manifold trunk 1½ inch flat sealing Heating circuit connection ¾ inch Rp thread Regulation valves with locking function in the supply line Return flow locking for each heating circuit Including KFE taps 320

26 Regulation components, manifolds and manifold cabinets Manifold Dimensions of industry manifolds Fig. 273: Dimensions of industry manifolds Art. no. Outlets L (mm) L1 (mm) Kvs value (m³ / h) ,52 Dimensions , , , , , , , , , , , ,66 Tab. 132: Dimensions 321

27 Application technology: Fonterra radiant heating and cooling Target values of the valves K v value (m³ / h) Number of revolutions (U) 0,25 0,5 1 1,5 2 2,5 3 3,5 K vs value (m³ / h) 0,22 0,37 0,62 0,92 1,27 1,55 1,72 1,85 1,93 Tab. 133: Target values of the valves Flow diagram 4 [U] 1 [kpa] 3 [hpa] 2 [kg/h] Fig. 274: Flowthrough diagram Key 1 Pressure loss p [kpa] 2 Mass flow m [kg/h] 3 Pressure loss p [hpa] 4 Number of revolutions [U] 322

Regulation components, manifolds and manifold cabinets Manifold cabinets Manifold cabinets The manifold cabinets house not only the manifolds but also actuators, ball valves, basic units or other

28 Regulation components, manifolds and manifold cabinets Manifold cabinets Manifold cabinets The manifold cabinets house not only the manifolds but also actuators, ball valves, basic units or other regulation devices. The cabinet allows for quick mounting of and easy access to the components. Wall-mounted manifold cabinet Made of galvanised sheet steel, frame and door painted (colour pure white RAL 9016) with an installation depth of 140 mm, five cabinet widths available. Features Suitable for manifold DN25 Height-adjustable from mm incl. universal bracket for manifold Fig. 275: Wall-mounted manifold cabinet Fig. 276: Dimensions Type T L mm mm mm 725 mm mm mm Dimensions model Tab. 134: Dimensions model

29 Application technology: Fonterra radiant heating and cooling Manifold selection table model Model Type Manifold connection vertical Heat flow meter vertical Differential pressure regulator + heat flow meter vertical Differential pressure regulator + vertical connection Manifold connection + zone valve Manifold connection + control station model Tab. 135: Manifold selection table model Concealed manifold cabinet Made of galvanised steel sheet, frame and door painted (colour: traffic white RAL 9016), with an installation depth of 110 to 150 mm, in five cabinet widths. Features Suitable for manifold DN25 Height-adjustable from 675 to 855 mm incl. universal bracket for manifold Fig. 277: Concealed manifold cabinet Fig. 278: Dimensions 324

30 Regulation components, manifolds and manifold cabinets Manifold cabinets Type T L1 L mm 510 mm mm 595 mm mm 685 mm 745 mm mm 1045 mm mm 1195 mm Dimensions model 1294 Tab. 136: Dimensions model 1294 Model 1294 Type Manifold connection horizontal Manifold connection vertical Manifold connection + zone valve horizontal Manifold connection + heat flow meter horizontal Manifold connection + differential pressure regulator horizontal Manifold connection + differential pressure regulator + heat flow meter horizontal Manifold connection + control station model Manifold selection table model Tab. 137: Manifold selection table model

Application technology: Fonterra radiant heating and cooling Concealed manifold cabinet 80 mm Made of galvanised steel sheet, frame and door painted (colour: pure white RAL 9016), with an

31 Application technology: Fonterra radiant heating and cooling Concealed manifold cabinet 80 mm Made of galvanised steel sheet, frame and door painted (colour: pure white RAL 9016), with an installation depth of 80 to 110 mm, in five cabinet widths. Features Suitable for manifold DN25 Height-adjustable from 675 to 855 mm incl. universal bracket for manifold The concealed box model with an adjustable installation depth of mm is suitable for use in drywalls. Fig. 279: Concealed manifold cabinet Fig. 280: Dimensions Dimensions model Type T L1 L mm mm mm 685 mm mm mm 1195 Tab. 138: Dimensions model Manifold selection table model Model Type Manifold connection horizontal Manifold connection vertical Manifold connection + zone valve horizontal Tab. 139: Manifold selection table model

32 Viega Technology GmbH & Co. KG Viega Platz Attendorn Germany Phone +49 (0) viega.com INT VPN

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