Viessmann 7502079, Installation And Service Instructions Manual

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1. Information Disposal of packaging ............................................................................ 5
Symbols ................................................................................................. 5
Intended use .......................................................................................... 5
Product information ................................................................................ 6
2. Preparing for installation Requirements regarding on-site connections ........................................ 7
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Recommended power cables ............................................................. 8
3. Installation sequence Installing the external unit ...................................................................... 10
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Installation information ........................................................................ 10
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Installation site .................................................................................... 11
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Minimum clearances ........................................................................... 11
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Transport and installation ................................................................... 12
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Floorstanding installation .................................................................... 13
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Wall mounting ..................................................................................... 13
Installing the internal unit ....................................................................... 13
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Transport ............................................................................................ 13
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Installation room requirements ........................................................... 14
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Minimum clearances ........................................................................... 15
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Removing the cylinder module ........................................................... 16
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Assembly and sealing faces to bear in mind ...................................... 20
Connecting refrigerant lines ................................................................... 22
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Routing refrigerant lines ..................................................................... 22
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Sound and vibration isolation when line entry is above ground level . 23
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Connection to the external unit ........................................................... 24
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Connection to the internal unit ............................................................ 25
Connecting the secondary circuit ........................................................... 28
Connecting the DHW side ..................................................................... 30
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Safety valve ........................................................................................ 30
Connecting a cooling circuit if required .................................................. 30
Electrical connection .............................................................................. 31
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Internal unit: Routing the cables to the wiring chamber ...................... 32
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Internal unit: Overview of connections ................................................ 33
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Internal unit: Main PCB (230 V~ components) ................................... 34
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Internal unit: Expansion PCB on main PCB (230 V~ components) .... 36
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Internal unit: Luster terminals (signal and safety connections) ........... 36
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Internal unit: Controller and sensor PCB (LV connections) ................ 37
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Internal unit: AVI PCB ......................................................................... 38
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External unit: Overview of connections .............................................. 39
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Connecting internal and external units ............................................... 40
Power supply ......................................................................................... 40
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Heat pump control unit power supply 230 V~ ..................................... 41
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External unit power supply 230 V~/400 V~ ........................................ 41
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Connecting instantaneous heating water heater power supply .......... 43
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Power supply with power-OFF: Without on-site load disconnect ....... 43
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Power supply with power-OFF: With on-site load disconnect ............ 44
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Mains power supply in conjunction with on-site power consumption . 46
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Smart Grid .......................................................................................... 46
Closing the heat pump ........................................................................... 47
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Fitting side cover for external unit ....................................................... 47
4. Commissioning, inspec-
tion, maintenance
Steps - commissioning, inspection and maintenance ............................ 48
5. Maintenance Overview of electrical components ........................................................ 66
Opening programming unit .................................................................... 66
Overview of internal components: Internal unit ...................................... 68
DHW cylinder drain & fill valve positions ............................................... 69
Index
Index
5700 562 GB