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- Page 1 Operating instructions en Installation instructions Heat pump control interface module VWZ AI Publisher/manufacturer Vaillant GmbH Berghauser Str. 40 D-42859 Remscheid Tel. +492191 18 0 Fax +492191 18 2810 info@vaillant.de www.vaillant.de...
- Page 2 Operating instructions ........1 Installation instructions ........11...
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Page 3: Table Of Contents
Contents Operating instructions Contents Safety ..............2 Action-related warnings ......... 2 Intended use ............2 General safety information ........2 Notes on the documentation ......4 Product description..........4 Heat pump system..........4 Control elements............ 4 Control panel ............4 Description of the symbols ........ -
Page 4: Safety
VWL ..5/6 A .. VWZ AI ▶ If you cannot ensure the operation, have a This product can be used by children aged competent person drain the heating install- from 8 years and above and persons with ation. - Page 5 ▶ Only install the product in dry rooms. 1.3.5 Benchmark Vaillant is a licensed member of the Bench- mark Scheme which aims to improve the standards of installation and commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing to optimise safety, efficiency and performance.
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Page 6: Notes On The Documentation
▶ Store these instructions and all other applicable docu- ments for further use. These instructions apply only to: Product VWZ AI kWh/d Product description Heat pump system Design of a sample heat pump system with monoblock tech- nology:... -
Page 7: Functional Description Of Buttons
Operation 4 CE marking Symbol Meaning Explanation – Electric back-up Displayed flashing: Electric heater back-up heater in operation – Displayed together with the "Heating mode" symbol: Electric back-up heater The CE marking shows that the products comply with the active for heating mode basic requirements of the applicable directives as stated on –... -
Page 8: Operating Concept
4 Operation 4.4.3 Adjusting the target cylinder temperature As soon as a fault message is present, the basic displays switches to the fault message. Danger! Operating concept Risk of death from legionella. The product has two operating levels. Legionella multiply at temperatures below 60 °C. -
Page 9: Setting The Heating Flow Temperature
Operation 4 4.4.5 Displaying the Live Monitor Setting the heating flow temperature Menu → Live Monitor Condition: No system control connected You can use the Live Monitor to view the current status of ▶ Press in the basic display. the product. ▶... -
Page 10: Care And Maintenance
Guarantee shown on the display instead of the basic display. If several We only grant a Vaillant manufacturers warranty if a suitably faults occur at the same time, these are displayed alternately qualified engineer has installed the system in accordance for two seconds each. -
Page 11: Appendix
Appendix Appendix Troubleshooting Problem Possible cause Remedy Building power supply switched off Switch on building power supply Domestic hot water or heating set to "off"/domestic Ensure that domestic hot water mode and/or hot water temperature or target temperature set too heating mode is activated in the system control. - Page 12 Appendix Setting level Values Unit Increment, select Factory setting Setting Min. Max. Building circuit water pressure Current value Building circuit flow rate Current value Compressor anti-cycling time Current value Immersion heater anti-cycling Current value time ℃ Target flow temp. Current value ℃...
- Page 13 Contents Installation instructions 7.10 Checking the domestic hot water generation ..19 7.11 Floor drying............19 Contents 7.12 Starting up the optional system control ....20 Adapting the unit to the heating installation............20 Safety ..............12 Configuring the heating installation ..... 20 Action-related warnings ........
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Page 14: Safety
Heat pump control cuit breaker). interface module ▶ Secure against being switched back on VWL ..5/6 A .. VWZ AI again. Intended use includes the following: ▶ Wait for at least 3 minutes until the capa- – observance of accompanying operating, citors have discharged. -
Page 15: Regulations (Directives, Laws, Standards)
Safety 1 1.3.4 Risk of material damage due to malfunctioning Not rectifying faults, changing the safety devices and failing to carry out maintenance can cause malfunctioning and pose safety risks during operation. ▶ Ensure that the heating installation is in a technically perfect condition. -
Page 16: Notes On The Documentation
▶ Pass these instructions and all other applicable docu- ments on to the end user. These instructions apply only to: Product VWZ AI Further information ▶ Identification plate Scan the displayed code using your smartphone in order to view further information about the installation. -
Page 17: Ce Marking
Check that the scope of delivery is complete. The declaration of conformity can be viewed at the manufac- Quant- Designation turer's site. VWZ AI Safety devices VR 10 standard sensor 3.5.1 Frost protection function Installation accessories (screws and wall plugs) -
Page 18: Installing The Product
5 Installation Installing the product Installing the external temperature sensor Installing the outdoor temperature sensor 230 V~ 230 V~ DCF/AF DCF/AF PE N PE N PE N PE N PE N Auf Zu PE N 1 Mount the product and the supplied installation access- ory on the wall. -
Page 19: Installing Components For The Energy Supply Company Lockout Function
Installation 5 5.3.1 Carrying out the wiring 5.3.4 Connecting the product Ensure that the mains voltage is correctly disconnected Note from the safety extra-low voltage. The power supply cable and the eBUS line are not Only connect power supply cables to the terminals that included in the scope of delivery. -
Page 20: Connecting The Circulation Pump
6 Operation Start-up Connecting the circulation pump Guide the circulation pump's 230 V connection cable Starting up the product from the bottom left-hand side and into the electronics box. Ensure that the casing is closed when starting up the Connect the 230 V connection cable to the plug from product. -
Page 21: Menu Functions Without The Optional System Control
Start-up 7 7.3.1 Ending the installation assistant Calling up statistics ▶ Menu → Installer level → Test menu → Statistics Once you have run through the installation assistant suc- cessfully, confirm by pressing You can use this function to call up the statistics for the heat ◁... -
Page 22: Starting Up The Optional System Control
8 Adapting the unit to the heating installation Total pressure losses in the system Days after starting the func- Target flow temperature for tion this day [°C] → See installation instructions for the outdoor unit Instructing the end user 17–23 10 (frost protection function, Danger! pump in operation) -
Page 23: Querying The Fault Memory
Inspection and maintenance 10 10 Inspection and maintenance Querying the fault memory The product has a fault memory. You can use this to query 10.1 Checking maintenance messages the last ten faults that occurred in chronological order. If the symbol is shown in the display, the product requires To call up the fault memory, select Menu →... -
Page 24: Appendix
Appendix Appendix Printed circuit board [ESCO] Energy supply company contact [X7] UV1 external prioritising diverter valve [MI] Multi-function input: Manual circulation switch-on [X6] MA2 multi-function output 2: Circulation pump, anti-legionella pump, zone valve, dehumidifying unit [DCF/AF] DCF/outdoor temperature sensor [X5] MA1 multi-function output 1: Zone valve (basic [SP1] Domestic hot water cylinder temperature system diagram 8), cooling signal (basic system sensor... -
Page 25: B Basic Connection Diagram For The Energy Supply Company Lockout
Appendix Basic connection diagram for the energy supply company lockout L1 L2 L3 N X211 X210 X200 X206 L1 L2 L3 X211 X210 X200 X206 Meter/fuse box Potential-free normally open contact, for actuating ESCO, for the energy supply company lockout func- Household electricity meter tion Heat pump electricity meter... -
Page 26: C Installer Level Overview
Appendix Installer level overview Setting level Values Unit Increment, select, ex- Factory setting Setting planation Min. Max. Installer level → Enter code 1 (competent person code 17) Installer level → Fault list → Current value F.XX – F.XX Installer level → Test menu → Statistics → Compressor hours Current value Compressor starts... - Page 27 Appendix Setting level Values Unit Increment, select, ex- Factory setting Setting planation Min. Max. ℃ T.0.56 Compressor inlet temper- ature ℃ T.0.57 EEV outlet temperature ℃ T.0.59 Capacitor outlet temperat- T.0.63 High pressure 31.9 bar (abs) T.0.64 Low pressure bar (abs) T.0.67 High-pressure switch Closed Open...
- Page 28 Appendix Setting level Values Unit Increment, select, ex- Factory setting Setting planation Min. Max. DHW activation K Cyl. charg. hysteresis Immers. heater mode Heating+DHW Heating Domestic hot water Limp home mode Heating Domestic hot water Heating+domestic hot water ℃ Cooling target flow MO relay None Fault signal...
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Page 29: D Status Codes
Appendix Setting level Values Unit Increment, select, ex- Factory setting Setting planation Min. Max. High-pressure switch → Reset Yes, No fault? Factory settings → Restore fact- Yes, No ory settings Installer level → Start inst. assistant → Language Languages available for 02 English selection Syst. - Page 30 Appendix Statuscode Meaning S.133 Domestic hot water: The start conditions for the compressor in domestic hot water mode are checked. Start the other actu- Prerun ators for domestic hot water mode. S.134 Domestic hot water: The compressor works in order to meet the domestic hot water demand. Compressor active S.135 Domestic hot water: The external back-up heater is used in domestic hot water mode.
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Page 31: E Maintenance Messages
Appendix Statuscode Meaning S.284 De-icing flow temperat- If the flow temperature is below 5 °C, the heat pump is restarted. If the flow temperature is still not ure too low sufficient after three unsuccessful restarts, the heat pump is switched off and the fault message F.741 is displayed. -
Page 32: F Fault Codes
Appendix Remedy Code Meaning Cause – – M.203 Connection fault: Disp. not recog- Display defective Check the quality of the plug contact nised on the PCB and on the cable har- – Display not connected ness – Replace the display, if required Fault codes Remedy Code... - Page 33 Appendix Remedy Code Meaning Cause – – F.729 Compressor outlet temperature The compressor outlet temperature Checking the high-pressure sensor too low is lower than 0 °C for more than 10 – Checking that the EEV is working minutes or the compressor outlet correctly temperature is lower than -10 °C –...
- Page 34 Appendix Remedy Code Meaning Cause – – F.735 Evaporation temperature too high Temperature in the environment Check the system temperatures circuit (heating mode) or building – Check the refrigerant filling volume circuit (cooling mode) too high for for overfilling compressor operation –...
- Page 35 Appendix Remedy Code Meaning Cause – – F.755 Fault: 4-port valve position not Incorrect position of the 4-port di- Check the 4-port diverter valve (is an correct verter valve. If, in heating mode, the audible switching available? Use the flow temperature is lower than the sensor/actuator test) return temperature in the building cir- –...
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Page 36: G Characteristic Values For The Internal Temperature Sensors, Hydraulic Circuit
Appendix Remedy Code Meaning Cause – – F.823 Hot gas temperature switch open The hot gas thermostat shuts down Check the EEV the heat pump if the temperature – Replace the dirt filter in the refrigera- in the refrigerant circuit is too high. tion circuit, if required Following a waiting period, the heat pump attempts to start once more. -
Page 37: H Characteristic Values For The Vrc Dcf Outdoor Temperature Sensor
1862 1745 1619 1494 1387 1246 1128 1020 Technical data VWZ AI VWL X/2 A Operating voltage U 230 V ≤ 2 V⋅A Power consumption ≤ 2 A Contact loading of the output re- ≤ 4 A Total current Sensor operating voltage 3.3 V... -
Page 38: Index
Index Index Sensor test ................21 Service message, checking..........21 Service partner ..............20 Accessories, disposing off........... 21 Statistics, calling up............. 19 Actuator test ................ 21 Status codes, displaying............21 Actuators, checking ............. 21 Switching on, product ............18 Calling up, code layer............19 Test menu ................ - Page 40 0020291573_00 0020291573_00 16.12.2019 Supplier Vaillant Ltd. Nottingham Road Belper Derbyshire DE56 1JT Telephone 0330 100 3461 info@vaillant.co.uk www.vaillant.co.uk © These instructions, or parts thereof, are protected by copyright and may be reproduced or distributed only with the manufacturer's written consent.
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