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Vaillant VWZ AI, Operating Instructions Manual, Page: 1 / 40

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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

[email protected]

www.vaillant.de

Summary of Contents for VWZ AI

Page 1: ...uctions 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: ...en Operating instructions 1 en Installation instructions 11 ...

Page 3: ...lay 5 4 2 Operating concept 6 4 3 Menu display 6 4 4 Starting up the product 6 4 5 Setting the heating flow temperature 7 4 6 Setting the domestic hot water temperature 7 4 7 Switching off the product s functions 7 5 Care and maintenance 8 5 1 Caring for the product 8 5 2 Maintenance 8 5 3 Reading maintenance messages 8 5 4 Checking the system pressure 8 6 Troubleshooting 8 6 1 Reading fault messa...

Page 4: ...ed physical sensory or mental capabil ities or lack of experience and knowledge if they have been given supervision or instruc tion concerning use of the product in a safe way and understand the hazards involved Children must not play with the product Cleaning and user maintenance work must not be carried out by children unless they are supervised Any other use that is not specified in these instr...

Page 5: ...eted the Benchmark Checklist on the inside back pages of the installation in structions supplied with the product and that you have signed it to say that you have received a full and clear explana tion of its operation The installer is leg ally required to complete a commissioning checklist as a means of complying with the appropriate Building Regulations England and Wales All installations must b...

Page 6: ...gy yield 2 Display of the current assignment of the right hand selection button 3 Left and right hand selection buttons 4 and button 5 Reset button restart the product 6 Access to the menu for additional information 7 Display of the current assignment of the left hand selection button 8 Displays the symbols for the heat pump s current operating mode 9 Display 3 4 Description of the symbols If you ...

Page 7: ...r The type designation and serial number are on the data plate on the rear of the housing 3 7 CE marking The CE marking shows that the products comply with the basic requirements of the applicable directives as stated on the declaration of conformity The declaration of conformity can be viewed at the manufac turer s site 3 8 Safety devices 3 8 1 Frost protection function The frost protection funct...

Page 8: ...on Do not set any water temperatures below 60 C without consulting the competent person first Depending on the source of the energy obtained from the environment target cylinder temperatures of up to 70 C can be reached with the compressor In order to achieve energy efficient domestic hot water generation predominantly from the energy extracted from the environment the factory set ting for the des...

Page 9: ...ls for the competent person Menu Information Contact data Phone number If the competent person has entered their telephone number during the installation you can read it here 4 5 Setting the heating flow temperature Condition No system control connected Press in the basic display Use or to change the value and confirm this Condition System control connected Set the heating flow temperature on the ...

Page 10: ...ending on the type of fault the system can work in limp home mode in order to maintain the heating mode or do mestic hot water generation F 723 Building circuit Pressure too low If the filling pressure falls below the minimum pressure the heat pump will be switched off automatically Inform your competent person so that he can top up the heating water 6 2 Detecting and eliminating faults If problem...

Page 11: ...ect Factory setting Setting Min Max Basic display Right hand selection button Room temperature setpoint Current value Manual cooling demand Basic display Left hand selection button Domestic hot water cylinder tar get temperature Current value Actual DHW cylinder temperat ure Current value Yield indicator Energy yield Day Heating Cumulative value kWh Energy yield Day Domestic hot water Cumulative v...

Page 12: ...al power consump tion of the heat pump without any external components connec ted as supplied Compressor modulation Current value Air inlet temperature Current value Immersion heater power Current value kW Outdoor temperature Current value Information Contact details Phone number Serial number Permanent value Operating hours total Cumulative value h Hours heating Cumulative value h DHW operating h...

Page 13: ...8 7 Start up 18 7 1 Starting up the product 18 7 2 Switching on the product 18 7 3 Running the installation assistants 18 7 4 Menu functions without the optional system control 19 7 5 Calling up the installer level 19 7 6 Checking the configuration 19 7 7 Calling up statistics 19 7 8 Displaying the filling pressure in the building circuit 19 7 9 Checking the heating mode 19 7 10 Checking the domes...

Page 14: ...product in ac cordance with the product and system ap proval compliance with all inspection and main tenance conditions listed in the instruc tions Intended use also covers installation in ac cordance with the IP code Any other use that is not specified in these instructions or use beyond that specified in this document shall be considered improper use Any direct commercial or industrial use is al...

Page 15: ...t may affect safety 1 3 5 Danger due to error functions Ensure that the heating system is in a technically perfect condition Ensure that no safety or monitoring devices have been removed bridged or disabled Immediately rectify any faults and damage that may affect safety At lengths of over 10 m 230 V supply lines must be laid separately from sensor or bus lines Secure all supply lines in the casin...

Page 16: ... installation You are guided to installation videos 3 Product overview 3 1 Heat pump system Design of a sample heat pump system with monoblock tech nology 1 2 4 3 5 1 Heat pump outdoor unit 2 eBUS line 3 System control op tional 4 Heat pump control module 5 Heating circuit 3 2 Overview of functional elements 1 2 3 1 LED 2 Diagnostic socket for later use 3 Identification plate 3 3 Connecting the po...

Page 17: ...cuit operating pressure 0 07 MPa 0 70 bar 3 6 Energy balance control The energy balance is the integral from the difference between the flow temperature actual value and target value which is added up every minute If the set heat deficit is reached the heat pump starts If the supplied heat volume corresponds to the heat deficit the heat pump is switched off The energy balancing is used for heating...

Page 18: ...ordance with its enclosed set up instructions 5 3 Preparing the electrical installation Danger Risk of death from electric shock as a res ult of an improper electrical connection An improper electrical connection may neg atively affect the operational safety of the product and result in material damage or per sonal injury Only carry out the electrical installation if you are a trained competent pe...

Page 19: ...the single phase 230 V network a tolerance of 10 to 15 must be provided 5 3 4 Connecting the product Note The power supply cable and the eBUS line are not included in the scope of delivery 1 Connect the product using a fixed connection and a partition with a contact gap of at least 3 mm e g fuses or power switches 2 Wire the product in accordance with the wiring diagram see appendix Note If the di...

Page 20: ...re that the casing is closed when starting up the product 2 Start up the product together with the controller In stallation instructions for the controller 7 2 Switching on the product Note The product does not have an on off switch The product is switched on as soon as it is connected to the power grid 1 Use the partition that is installed on site to switch the product on The display shows the ba...

Page 21: ...lling up statistics Menu Installer level Test menu Statistics You can use this function to call up the statistics for the heat pump 7 8 Displaying the filling pressure in the building circuit The product has a pressure sensor in the heating circuit and a digital pressure display Select Menu Live Monitor to display the filling pressure in the building circuit 7 9 Checking the heating mode Start che...

Page 22: ...een 20 kPa 200 mbar and 90 kPa 900 mbar The heat pump operates at its optimum level when the nominal flow can be achieved by setting the available pressure Delta T 5 K 8 2 Total pressure losses in the system See installation instructions for the outdoor unit 8 3 Instructing the end user Danger Risk of death from legionella Legionella multiply at temperatures below 60 C Ensure that the end user is ...

Page 23: ...Resets to reset all of the parameters at the same time and to restore the product to the factory settings 10 Inspection and maintenance 10 1 Checking maintenance messages If the symbol is shown in the display the product requires maintenance work or the product is in comfort protection mode To obtain further information call up the Live Monitor Carry out the maintenance work that is listed in the ...

Page 24: ...erature sensor 4 SP1 Domestic hot water cylinder temperature sensor 5 VF1 System temperature sensor 6 BUS eBUS bus connection outdoor unit system control 7 X8 ZH external back up heater or MEH 60 8 X7 UV1 external prioritising diverter valve 9 X6 MA2 multi function output 2 Circulation pump anti legionella pump zone valve dehumidifying unit 10 X5 MA1 multi function output 1 Zone valve basic system...

Page 25: ... X210 L N X211 kWh 2 2 N L1 L2 L3 5 BUS EVU BUS L1 L2 L3 N L N X200 BUS X206 X210 L N X211 2 2 3 kWh 1 3 4 5 6 7 8 2 1 Meter fuse box 2 Household electricity meter 3 Heat pump electricity meter 4 Ripple control receiver 5 Potential free normally open contact for actuating ESCO for the energy supply company lockout func tion 6 System control 7 Heat pump control module PCB 8 Outdoor unit PCB INSTALL...

Page 26: ...nu Check programmes P 04 Heating mode Select P 06 Purge building circuit Select P 12 De icing Select P 27 Immersion heater Select P 29 High pressure Select Installer level Test menu Sensor actuator test T 0 01 Building circuit pump power 0 100 5 off 0 T 0 17 Fan 1 0 100 5 0 T 0 18 Fan 2 0 100 5 0 T 0 19 Condensate tray heater Off On On Off Off T 0 20 4 port valve Off On On Off Off T 0 21 Position ...

Page 27: ...Domestic hot water Heating domestic hot water Heating T 1 44 Cylinder temperature 40 90 0 1 T 1 46 Lockout contact S20 Closed Open Closed Open Closed T 1 69 Outdoor temperature 40 90 0 1 T 1 70 System temperature 40 90 0 1 T 1 71 DCF status Current value No DCF signal Validate DCF signal Valid DCF signal T 1 72 Lockout contact S21 Closed Open Closed Open Open T 1 119 MO1 output Off On Off On Off T...

Page 28: ... anti cycl time 0 9 h 1 5 Conf heat build pump 50 100 PWM Auto Auto Conf cool build pump 50 100 PWM Auto Auto Conf DHW build pump 50 100 PWM Auto 65 Reset anti cycl time Anti cycl time after pow supp switch on 0 120 min 1 0 Compr current limit 1 5 7 kW 13 16 A 12 kW 20 25 A Fan boost 3 52 70 1 70 Compr noise reduct 2 40 60 1 40 Only for products with cooling Cooling technology None Active cooling ...

Page 29: ...ere is no heat demand or cooling demand Standby 0 Outdoor unit Standby 1 Indoor unit S 101 Heating Compressor shutdown The heat demand is met the demand is ended by the system control and the heat deficit is offset The compressor is switched off S 102 Heating Compressor blocked The compressor is blocked for heating mode because the heat pump is outside of its operating limits S 103 Heating Prerun ...

Page 30: ...use the outdoor temperature at the fan is below the operating limits Heating mode 20 C Domestic hot water mode 20 C Cooling mode 15 C S 260 Fan unit 2 Fan blocked If the fan speed is 0 rpm the heat pump is switched off for 15 minutes and then restarted If the fan does not start up after four unsuccessful restarts the heat pump is switched off and the fault mes sage F 785 is displayed S 272 Buildin...

Page 31: ...ation temperat ure too high The operating characteristics have been exited The heat pump is restarted S 308 Condensation temperat ure too high The operating characteristics have been exited The heat pump is restarted S 312 Building circuit Return temperature too low Return temperature in the building circuit too low for compressor to start Heating Return temperature 5 C Cooling Return temperature ...

Page 32: ...sor Replace the cable harness F 517 Sensor fault Compr outlet temp The sensor is not connected or the sensor input has short circuited Check and if required replace the sensor Replace the cable harness F 519 Sensor fault Building circuit re turn temp The sensor is not connected or the sensor input has short circuited Check and if required replace the sensor Replace the cable harness F 520 Sensor f...

Page 33: ... outlet temperature is above 110 C Application limits exceeded EEV does not work or does not open correctly Refrigerant volume too low frequent defrosting due to extremely low evaporation temperatures Check the compressor inlet sensor and outlet sensor Check the compressor outlet temper ature sensor TT135 Check the EEV does the EEV move to the limit stop Use the sensor actuator test Check the refr...

Page 34: ...ck the refrigerant filling volume for overfilling Check whether the service valves on the outdoor unit are open Check the air volume flow in cooling mode for sufficient flow rate Checking the heating pump Check the building circuit flow rate F 741 Building circuit Return temp too low During the de icing the return tem perature falls below 13 C Ensure the minimum installation volume is maintained i...

Page 35: ... undervoltage and has switched off and locked the pump Switch the heat pump off for at least 30 seconds no current Check the quality of the plug contact on the PCB Check that the pump functions cor rectly Purging the building circuit Check that the dirt filter that is in place is permeable F 817 Freq converter fault Compressor Defect in the compressor e g short circuit Defect in the frequency conv...

Page 36: ...p Refrigerant circuit temperature sensor vapour forming not con nected or the sensor input has short circuited Check and if required replace the sensor and cable F 1117 Compressor Phase failure Defective fuse Incorrect electrical connections Mains voltage too low Compressor low tariff power supply not connected Blocked by energy supply company for over three hours Check the fuse Checking the elect...

Page 37: ...1246 20 1128 25 1020 30 920 35 831 40 740 I Technical data VWZ AI VWL X 2 A Operating voltage Umax 230 V Power consumption 2 V A Contact loading of the output re lay 2 A Total current 4 A Sensor operating voltage 3 3 V Cross section of eBUS line extra low voltage 0 75 mm Cross section of sensor line extra low voltage 0 75 mm Cross section of 230 V connection cable pump or mixer connection cable 1 ...

Page 38: ...icity 12 Energy supply company lockout 17 F Factory settings restoring 21 Fault codes 20 Fault memory 21 Fault symbol 21 Filling pressure displaying 19 Frost protection function 15 Function menu 21 I Installation assistant 18 Installer level calling up 19 Intended use 12 L Lines Requirements 17 Live Monitor displaying 21 Low water pressure protection 15 M Maintenance message checking 21 O Operatin...

Page 39: ......

Page 40: ...am 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 0020291573_00 ...

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