Vaillant geoTHERM VWS Installation Instructions Manual
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Vaillant geoTHERM VWS Installation Instructions Manual

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For the heating engineer
Installation instructions
geoTHERM
Heat pump
VWS
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Summary of Contents for Vaillant geoTHERM VWS

  • Page 1 For the heating engineer Installation instructions geoTHERM Heat pump...

  • Page 2: Table Of Contents

    6.4.3 Dual circuit feed, special tariff Troubleshooting and diagnosis ....... 70 (Electroplan 3) ............28 10.1 Error messages on the controller ......70 6.4.4 Connecting external components ......29 10.2 Malfunctions of eBUS components ...... 71 Installation instructions geoTHERM VWS 0020046310_01...

  • Page 3: Notes On The Documentation 1

    Immediate risk of serious injury or death! Danger! Danger of death by electric shock! Danger! Danger of burning and scalding! Caution! Potentially dangerous situation for the product and environment. Note! Useful information and instructions • Symbol for a necessary task Installation instructions geoTHERM VWS 0020046310_01...

  • Page 4: Applicability Of The Manual

    – EN 378 (safety and environmentally related specifica- tions for refrigerating systems and heat pumps) Intended use The Vaillant geoTHERM heat pumps are state-of-the-art appliances which have been constructed in accordance with recognised safety regulations. Nevertheless, there is still a risk of death or serious injury to the user or...

  • Page 5: Description Of The Appliance 2

    Fig. 2.1 Example of an identification plate VDE/GS mark Read the Operating and Installation Manual! Humidity protection class Ensure proper disposal at the end of its useful life (not household waste) Serial Number 21054500100028300006000001N4 Table 2.1 Explanation of symbols Installation instructions geoTHERM VWS 0020046310_01...

  • Page 6: Functional Principle

    Domestic um at a lower temperature. hot water cylinder The Vaillant geoTHERM heat pump uses geothermal en- Switching valve ergy as its heat source. Heating water circuit Heating water pump...

  • Page 7: Design Of The Heat Pump

    Drop formation under the unit is thus possible. Design of the heat pump The Vaillant geoTHERM heat pump is available in the Fig. 2.4 Front view following models. The heat pump are, above all, diffe- rent from each other in their output.
  • Page 8 6 Condenser 7 CH pump 8 Fill/drain valve for heating circuit 9 Data badge 10 Compressor 11 Condensate pan 12 Expansion Valve 13 Fill/drain valve for brine circuit 14 Brine pump 15 Evaporator 16 3-way valve Installation instructions geoTHERM VWS 0020046310_01...

  • Page 9: General Notes On Operating Modes And Functions

    Overheating protection for the floor (important for wooden floors) – Pump blocking protection Prevents seizing of pumps in the system - Freeze protection function Shuts down the compressor if the temperature of the heat source falls below a predetermined value Installation instructions geoTHERM VWS 0020046310_01...

  • Page 10: Safety Instructions And Regulations

    If the heating water hardness is more than 3.0 mmol/l (21.05 °e) it should be softened. You can use the Vail- lant ion exchanger (Art. No. 990 349) for this purpose. Observe the enclosed instructions for use. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 11: Coolants

    All warranties become void if any approved replacement coolant other than the R 407 C recommended by Vaillant is used. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 12: Assembly And Installation

    It provides the necessary energy to bridge over the power compa- ny blocking periods. Other accessories - Heat transfer fluid - Filling pump - Safety assembly and tundish - Expansion vessel for the heating circuit Installation instructions geoTHERM VWS 0020046310_01...

  • Page 13: Dimensions And Clearances

    Assembly and installation 4 Dimensions and clearances 1200 0-10 1) Fig. 4.1 Dimensions and clearances Adjustable feet adjustable in height by 10 mm Installation instructions geoTHERM VWS 0020046310_01...

  • Page 14: Assembly/Installation At A Glance

    (pipe temperature may be as low as -15 °C). – Fit the cladding. – Fit the operating console. – Carry out the initial commissioning. – Fill out the start-up checklist. – Hand over system to the user and familiarise him with Installation instructions geoTHERM VWS 0020046310_01...

  • Page 15: Requirements Of The Heating Circuit

    • Check the heat pump and the separately packaged must be ensured. This is guaranteed by using a professi- operating console for any transport damage. onally installed buffer cylinder. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 16: Unpacking The Unit And Checking The Delivery

    • Carefully remove the packaging and padding, taking care not to damage any parts of the unit. • Unfasten the transport securing devices (brackets) with which the heat pump is fixed to the pallet. The brackets are no longer required. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 17: Installing The Heat Pump

    • Fasten the heat pump with a restraining strap. • Use a ramp when pushing the barrow from the pallet, e.g. a batten and a sturdy board. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 18: Removing The Cladding

    • Remove the upper cover in an upwards direction. Fig. 4.11 Removing the front upper cladding • Unfasten the two screws on the front of the front upper cladding and remove the cladding. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 19: On-Site Installation

    • The accessory kit contains an insulating pad for insu- lating the connection plate. Fit this insulating pad to the two right hand screwed connections (6). Installation instructions geoTHERM VWS 0020046310_01...

  • Page 20: Assembly Of The Heating System

    Note! We recommend the installation of a The brine expansion tank has a capacity Vaillant safety group and a tundish. of approx. 6 litres and is thus adequate for brine circuits up to a maximum of 1900 litres.

  • Page 21: Fitting The Vrc Dcf Outside Temperature Sensor

    Only the following brine media are authorised by Vail- lant for operation of the heat pump: – max. 30 % ethylene glycol/water – max. 33 % propylene glycol/water – potassium carbonate/water – max. 60 % ethanol/water Installation instructions geoTHERM VWS 0020046310_01...
  • Page 22 Heat source circuit • Now close valve (62) as well. • Switch off the filling pump (67) and remove the filling • Mix the antifreeze used by Vaillant in Germany, Aust- hose. ria and Switzerland, 1.2 % propylene glycol, with water •...
  • Page 23 The filling level can also vary depending on the temperature of the heat source, but under no cir- cumstances should it fall so far that it is no longer visib- le in the expansion tank. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 24: Electrical Installation

    Where lengths are greater than 10m, route the connec- tion cables carrying 230V separately from the sensor or bus cables. Do not use free terminals on the appliance as support terminals for other wiring. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 25: Electronic Box

    Additionally, there are two coiled cables hanging inside the control box (not shown here): – small two-way plug: connecting cable for the operating console – large three-way plug: power supply for vrnetDIALOG A control cable for the vrnetDIALOG is also supplied (accessories). Installation instructions geoTHERM VWS 0020046310_01...

  • Page 26: Unblocked Mains Supply (Electroplan 1)

    Key to Fig. 6.2 Pump Compressor Controller Auxiliary heater You can set the output of the 2 kW auxiliary heating from 4 kW to 2 kW by removing the bypass line, if required. 4 kW Installation instructions geoTHERM VWS 0020046310_01...

  • Page 27: Dual Circuit Feed, Heat Pump Tariff (Electroplan 2)

    Pump gram in the appendix. Compressor Controller Auxiliary heater You can set the output of the 2 kW auxiliary heating from 4 kW to 2 kW by removing the bypass line, if required. 4 kW Installation instructions geoTHERM VWS 0020046310_01...

  • Page 28: Dual Circuit Feed, Special Tariff (Electroplan 3)

    Pump gram in the appendix. Compressor Controller Auxiliary heater You can set the output of the 2 kW auxiliary heating from 4 kW to 2 kW by removing the bypass line, if required. 4 kW Installation instructions geoTHERM VWS 0020046310_01...

  • Page 29: Connecting External Components

    Should you wish to connect an external brine pressure the VPA Multi-cylinder is used. switch to the heat pump, use the terminals (1) for this. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 30: Simultaneous Operation Of The Compressor And Auxiliary Heating

    In the as-delivered condition, simultaneous operation of the compressor and the auxiliary heating is barred. If the supply mains permits it and comfort requires it, you can enable simultaneous operation by fitting a jumper (1). Installation instructions geoTHERM VWS 0020046310_01...

  • Page 31: Controller Pcb At A Glance

    LED (Item 18). 16 eBUS address rotary switch, set to "1" (factory setting) 17 Fuse T 4A/250 V The cover plate must be removed to change the fuses, Items 17 and 19. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 32: Wiring The Controller Pcb

    We recommend that the pipe toge- ther with the sensor be insulated to ensure optimum temperature measurement. Fig. 6.8 VR 10 standard sensor Installation instructions geoTHERM VWS 0020046310_01...

  • Page 33: Direct Heating Operation (Hydraulic Plan 1)

    Fig. 6.9. Expansion relief valve Expansion vessel Outdoor sensor VF2 supply temperature sensor Heat source circuit optional for hydraulic decoupling: Heating circuit pump with control line to the heat pump Hydraulic switch Installation instructions geoTHERM VWS 0020046310_01...

  • Page 34: Mixer Circuit With Buffer Cylinder (Hydraulic Plan 2)

    Gravity brake Control valve with position indication Cap valve Air separator/Dirt filter Expansion relief valve Expansion vessel Mixer valve Outdoor sensor Top temperature sensor, buffer VF2 supply temperature sensor Bottom temperature sensor, buffer Heat source circuit Installation instructions geoTHERM VWS 0020046310_01...

  • Page 35: Direct Heating Operation And Domestic Hot Water Cylinder (Hydraulic Plan 3)

    Fig. 6.11. Expansion vessel Outdoor sensor VF2 supply temperature sensor Heat source circuit Cold water optional for hydraulic decoupling: Heating circuit pump with control line to the heat pump Hydraulic switch Installation instructions geoTHERM VWS 0020046310_01...

  • Page 36: Mixer Circuit With Buffer Cylinder And Domestic Hot Water Cylinder (Hydraulic Plan 4)

    Air separator/Dirt filter Expansion relief valve Expansion vessel Safety group, drinking water cylinder Mixer valve Cylinder temperature sensor Outdoor sensor Top temperature sensor, buffer VF2 supply temperature sensor Bottom temperature sensor, buffer Heat source circuit Cold water Installation instructions geoTHERM VWS 0020046310_01...

  • Page 37: Connecting The Dcf Receiver

    You need only make sure that the bus interfaces are connected to the heat pump controller. The structure of the Vaillant system allows you to run the eBus from component to component (see Fig. 6.9). Interchanging the cables does not lead to any impair- ment in communication.

  • Page 38: Connecting Further Mixer Circuits

    • Now connect the aerial or telephone cable (3) to the vrnetDIALOG unit (see also the vrnetDIALOG manual). These cables must not be fed through the heat pump. Fig. 6.17 Fitting vrnetDIALOG Installation instructions geoTHERM VWS 0020046310_01...

  • Page 39: Connecting An External Boiler

    Electrical installation 6 Connecting an external boiler If your external boiler has a Vaillant eBUS interface, you can connect it to the heat pump eBUS via the VR32 ac- cessory (refer to the VR32 manual for more informati- on). LP/UV 1...
  • Page 40 Fig. 6.23 Fitting the front lower cladding • Press the lower cladding panel into the spring retainer on the casing and screw the panel frame to the casing using the two screws, as shown in the illustration. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 41: Start-Up 7

    Fig. 6.25 Fitting and connecting the operating console • Connect the supply line to the control panel. Fig. 6.26 Fitting the front panel of the operating console • Push the front panel of the control panel on to the frame. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 42: Operating The Controller

    • Turn the dial to modify the parameter setting value. • Press the dial to mark the setting value to be accepted. • Repeat this sequence until all the settings have been made. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 43: Carrying Out The Initial Commissioning

    Table 7.1 Selecting the Hydraulic plan No. Selecting the electroplan • Turn the dial until the cursor > points to the number of the electroplan. • Press the dial. The parameter will be activated and displayed in inverse video. • Select Installation instructions geoTHERM VWS 0020046310_01...

  • Page 44: Bleeding The Brine Circuit

    • Only set "Exit mode? "to "YES" if you are sure that everything has been set correctly. Once you have confirmed with "YES", the controller switches to the graphics display. The heat pump starts under its autonomous control system. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 45: Controller

    3 °C. sively high temperatures. Cylinder frost protection This function starts automatically when the actual tem- perature of the cylinder falls below 10 °C. The cylinder is Installation instructions geoTHERM VWS 0020046310_01...

  • Page 46: Settable Auxiliary Functions

    (see Chap. 10.5). and is independent of the outside temperature. All the For the geoTHERM VWS heat pumps you can set the selected operating modes are interrupted when this value (Default setting -10 °C) for the freezing protection function is activated.

  • Page 47: Auxiliary Functions Via Vrdialog

    1 or 3 by a factor of 60. It is used as a test function. See Chap. 8.10. Fixed value controlling Using this function you can set, via vrDIALOG, a fixed flow temperature independently of the weather-control- led control system. See Chap. 8.10. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 48: Charging Principle Buffer Cylinder

    In Menus D1 to D5 you can operate and test the heat pump in diagnostic mode. In Menus I1 to I5 you can obtain general information re- garding the settings for the heat pump. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 49: Operator Level Sequence Diagram

    >Select day of the week >Set starting day >Select day of the week Code level only for expert technicians *) displays in grey are dependent on the set hydraulic plan Fig. 8.1 Displays in the Operator level Installation instructions geoTHERM VWS 0020046310_01...

  • Page 50: Code Level Sequence Diagram

    °mins lag/gain Setpoint flow temp. 41 °C Pumpenstatus Current flow temp. 29 °C Mischerstatus OPEN Pumpenstatus Mischerstatus OPEN *) displays in grey are dependent on the set hydraulic plan Fig. 8.2 Displays in the Code level Installation instructions geoTHERM VWS 0020046310_01...

  • Page 51: Control System

    Electric Wiring Diagram Accept change >Select Install. Completed Exit mode? >Yes > Values can be set *) displays in grey are dependent on the set hydraulic plan Fig. 8.3 Displays in the Code level (cont.) Installation instructions geoTHERM VWS 0020046310_01...

  • Page 52: Displays In The Operator Level

    The temperature in the domestic hot water cylinder is also display- Table 8.3 Parameters that can be set in the Operator level Installation instructions geoTHERM VWS 0020046310_01...
  • Page 53 CH return too high Under critical operating conditions a warning message is displayed in both lower display lines. These lines are empty when the operating conditions are normal. Table 8.3 Settable parameters in the operator level (ctnd.) Installation instructions geoTHERM VWS 0020046310_01...
  • Page 54 Off: The heating circuit is off, provided that the frost protection function (depending on the external tem- perature) is not activated. Note: Additional heating circuits are displayed, depending on the system configuration. Table 8.3 Settable parameters in the operator level (ctnd.) Installation instructions geoTHERM VWS 0020046310_01...
  • Page 55 7:30 – 06:00 22:00 22:00 block. If the hot water operating mode (see menu 3) is set to "ON", the circulation pump runs continuously. >Select weekday/block Table 8.3 Settable parameters in the operator level (ctnd.) Installation instructions geoTHERM VWS 0020046310_01...
  • Page 56 Code level (ac- tuation of one of the dials). To gain entry to the Code level again after that, you will have to enter the code once more. Table 8.3 Settable parameters in the operator level (ctnd.) Installation instructions geoTHERM VWS 0020046310_01...

  • Page 57: Displays In The Code Layer

    T Buff.Bot OffsetRF1 25°C der top sensor VF1 T buffer bottom RF1: Temperature at the buffer cy- linder bottom sensor RF1 (see Section 8.4.3) Table 8.4 Parameters that can be set in the Code level Installation instructions geoTHERM VWS 0020046310_01...
  • Page 58 Deactivating the floor drying function: set to Day "0". Depending on the configuration of the heating sys- tem, the display will indicate for other heating cir- cuits if required. Table 8.4 Parameters that can be set in the Code level (cont.) Installation instructions geoTHERM VWS 0020046310_01...
  • Page 59 30 min, or after 90 minutes if 73 °C is not reached (e.g., if hot water is drawn du- ring this period). Table 8.4 Parameters that can be set in the Code level (cont.) Installation instructions geoTHERM VWS 0020046310_01...
  • Page 60 Brine pressure (Pressure sensor for heat source cir- Brine pressure 1.5 bar cuit; brine pressure) Table 8.4 Parameters that can be set in the Code level (cont.) see Figs. 1 and 2 in the appendix Installation instructions geoTHERM VWS 0020046310_01...
  • Page 61 Code 1/Code 2: No function! Values must not be 0000; FFFF Code 1: 0000 Code 2: FFFF changed! Codes accepted ? Table 8.4 Parameters that can be set in the Code level (cont.) see Figs. 1 and 2 in the appendix Installation instructions geoTHERM VWS 0020046310_01...
  • Page 62 3 = low tariff for the compressor and electric auxiliary heating (see Fig. 6.4). Accept change: Yes/No; "Yes" means that all the set values will be saved. Table 8.4 Parameters that can be set in the Code level (cont.) Installation instructions geoTHERM VWS 0020046310_01...
  • Page 63 UV1 = DHW: Changeover valve in "DHW loading" position. UV1 = HK: Changeover valve in "CH mode" position. Table 8.4 Parameters that can be set in the Code level (cont.) Installation instructions geoTHERM VWS 0020046310_01...
  • Page 64 The heat pump starts under its autonomous control system. Exit mode? >yes >Settable values This menu will not appear again once YES has been selected. Table 8.4 Parameters that can be set in the Code level (cont.) Installation instructions geoTHERM VWS 0020046310_01...

  • Page 65: Installer Menu

    "Auto" or "ECO" is set. One-time charging: 16.02.08 9:35 This function allows you to charge the hot water cylinder once, regar- dless of the current time program. one-time DHW tank loading enabled Table 8.5 Special functions Installation instructions geoTHERM VWS 0020046310_01...
  • Page 66 The system does not suffer damage. Time programme NO/YES Everything NO/YES Press the two dials for at least 5 seconds to call up the default set- >Settable values tings menu. Table 8.6 Reinstating default settings Installation instructions geoTHERM VWS 0020046310_01...

  • Page 67: Parameters That Can Be Set With

    – Fixed value: Fixed settings for the setpoint flow tempe- ratures for day and night; see Menu C5. Table 8.7 Parameters that can be set with vrDIALOG 810/2 Installation instructions geoTHERM VWS 0020046310_01...
  • Page 68 60. The minimum run time of 4 minutes and the minimum off time of 5 minutes for the compres- sor are unchanged. Table 8.7 Parameters that can be set with vrDIALOG 810/2 (cont.) Installation instructions geoTHERM VWS 0020046310_01...

  • Page 69: Inspection And Maintenance 9

    The heat pump may only be put into ope- ration again after all the cladding sec- tions have been fitted. Only genuine Vaillant spare parts may be used for in- spections, maintenance and repair work to ensure the long-term availability of all functions of your Vaillant ap-...

  • Page 70: Troubleshooting And Diagnosis

    The heat pump is shut down. It can only be restarted by resetting the error after removing the cause of the fault (see Menu I 1). – Moreover, other errors/malfunctions can occur on the unit or system. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 71: Malfunctions Of Ebus Components

    Check heat source system for leaks, top up brine, system as a result of leakage or air bleed. lock. Pressure < 0.6 bar " Table 10.2 Display in error memory and under Warning mes- " sage in Menu 1, no shut-down Installation instructions geoTHERM VWS 0020046310_01...

  • Page 72: Temporary Shut-Down

    Menu A4) Air in brine circuit. sensor. Check the volume flow of the well pump/brine pump (optimum temp. difference approx. 3-5 K). Clean the filter Bleed the brine circuit. Table 10.3 Temporary malfunctions Installation instructions geoTHERM VWS 0020046310_01...
  • Page 73 Errors (27 and 28). If the error occurs twice in a row the heat pump cannot be started until after 60 min. at the earliest. Table 10.3 Temporary malfunctions (cont.) Installation instructions geoTHERM VWS 0020046310_01...

  • Page 74: Blocking Error

    Short-circuit in the sensor connected correctly. Error flow sensor VF2 The contact temperature sensor operation VF2 in the heating circuit is Short-circuit in the sensor possible defective or it is not connected correctly. Table 10.5 Fault-induced shutdown Installation instructions geoTHERM VWS 0020046310_01...
  • Page 75 Compression fittings on 3-way valve Retighten compression fittings on 3-way automatically when the are leaking. valve. pressure rises above 0.7 bar Table 10.5 Fault-induced shutdown (cont.) Installation instructions geoTHERM VWS 0020046310_01...

  • Page 76: Other Errors/Malfunctions

    Room target temp. not optimally set Change room target temp. (Menu or too warm. Set-back temp. not optimally set Change set-back temp. (Menu Heating curve not optimally set. Change heating curve (Menu C2). Table 10.6 Other errors/malfunctions Installation instructions geoTHERM VWS 0020046310_01...

  • Page 77: Packaging

    As this Vaillant appliance is not covered by the law re- person to the prevailing building regulations at the time garding the marketing, return and environmentally of installation (G3).

  • Page 78: Technical Data

    - Number of revolutions EX valve - Permissible operating overpressure MPa (bar) 2.9 (29) - Compressor type Scroll - Oil Ester - Oil filling quantity 1,45 1,45 Table 13.1 Technical Data (cont'd on next page) Installation instructions geoTHERM VWS 0020046310_01...
  • Page 79 Table 13.1 Technical data (cont.) Caution! R 407 C is a chlorine-free coolant which does not affect the ozone layer. Never- theless, servicing work on the cooling circuit should only be carried out by aut- horised specialists. Installation instructions geoTHERM VWS 0020046310_01...

  • Page 80: Start-Up Checklist

    Was the brine source circuit filled to a pressure of 1.5 bar? Was the brine expansion tank filled to 2/3 full? Were isolating devices fitted ahead of the heat pump? Were the pipes thermally insulated against vapour diffusion? Table 14.1 Start-up checklist Installation instructions geoTHERM VWS 0020046310_01...
  • Page 81 Were all cables fastened using strain relief clamps? Was any available ripple control signal from the power company connected to the heat pump? Assembly checklist Were all the cladding panels fitted? Table 14.1 Start-up checklist (cont.) Installation instructions geoTHERM VWS 0020046310_01...

  • Page 82: Reference

    To the technician: Please fill in the following tables to facilitate any servicing work that may arise. Installation and commissioning were carried out by: Heat source construction Date: Company: Name: Telephone: Electrical installation Date: Company: Name: Telephone: Start-up Date: Company: Name: Telephone: Installation instructions geoTHERM VWS 0020046310_01...
  • Page 83 Details regarding the ground collector Details Number of brine circuits Distance of the installed pipes from one another Pipe diameter Installation depth of the collector in the ground Length of the longest brine circuit Table 15.1 Reference checklist Installation instructions geoTHERM VWS 0020046310_01...

  • Page 84: Lation Manual

    Was the operating manual handed over to the user? Was the installation manual handed over to the user? Were the manuals for all the accessories handed over to the user? Table 15.1 Reference checklist (cont.) Installation instructions geoTHERM VWS 0020046310_01...

  • Page 85: Appendix

    15694 3372 12486 2700 10000 2176 8060 1764 6535 1439 5330 1180 4372 3605 2989 2490 2084 1753 1481 1256 1070 Table 1, Appendix, VR 10 sensor characteristics Table 2, Appendix, VR 11 sensor characteristics Installation instructions geoTHERM VWS 0020046310_01...

  • Page 86: Vrc-Dcf Outside Temperature Sensor

    Appendix VRC-DCF outside temperature sensor Temperature (°C) Resistance (ohms) 2167 2067 1976 1862 1745 1619 1494 1387 1246 1128 1020 Table 3, Appendix, VRC DCF sensor characteristics Installation instructions geoTHERM VWS 0020046310_01...

  • Page 87: Heat Pump Schematic

    5 Compressor 6 Low pressure sensor 7 Low pressure switch 8 Heat source circuit pressure sensor 9 Evaporator 10 Expansion Valve 11 Condenser 12 Filter drier 13 DHW return line 14 Heating return 15 Heating feed Installation instructions geoTHERM VWS 0020046310_01...

  • Page 88: Electrical Circuit Diagram

    (running capacitor) blue Diverter Valve Heating (internal) yellow-green yellow-green blue blue brown brown black blue black vrnetDIALOG (optional) Heating pump Brine pump Compressor Electric auxiliary heating Fig. 2, Appendix, circuit diagram Installation instructions geoTHERM VWS 0020046310_01...

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