Viessmann VITOCAL 300-G, Installation And Service Instructions For Contractors

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1. Information Disposal of packaging ............................................................................ 7
Symbols ................................................................................................. 7
Intended use .......................................................................................... 7
Product information ................................................................................ 8
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System examples ............................................................................... 8
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Spare parts lists .................................................................................. 9
2. Preparing for installation Requirements concerning on-site connections ...................................... 10
Siting and transport requirements .......................................................... 10
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Transport ............................................................................................ 10
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Installation room requirements ........................................................... 11
3. Installation sequence Siting the heat pump .............................................................................. 12
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Removing the front panel ................................................................... 12
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Removing the heat pump module ....................................................... 13
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Transporting the heat pump module ................................................... 15
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Installing the heat pump module ......................................................... 15
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Fitting the hydraulic connection set .................................................... 16
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Levelling the heat pump ..................................................................... 17
Hydraulic connections ............................................................................ 17
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Connecting the primary circuit ............................................................ 17
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Connecting the secondary circuit ....................................................... 18
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Connecting the cooling circuit ............................................................. 18
Electrical connection .............................................................................. 18
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Preparing the electrical connections ................................................... 18
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Opening the wiring chamber ............................................................... 20
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Installing the programming unit .......................................................... 21
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Routing the cables to the wiring chamber .......................................... 23
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Connecting the Vitoconnect (accessories) ......................................... 24
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Overview of electrical connections ..................................................... 25
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Main PCB (function components 230 V~) .......................................... 26
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Expansion PCB on main PCB (230 V~ components) ......................... 29
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Luster terminals (message and safety connections) .......................... 33
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Controller and sensor PCB (extra low voltage (ELV) connections) .... 35
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Connecting a temperature limiter to restrict the maximum tempera-
ture of underfloor heating circuit ......................................................... 37
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Swimming pool heating ...................................................................... 39
Power supply ......................................................................................... 40
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Heat pump control unit power supply 230 V~ ..................................... 41
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Compressor power supply 400 V~ ..................................................... 41
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Instantaneous heating water heater power supply 400 V~ ................. 42
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Power supply with power-OFF: Without on-site load disconnect ....... 42
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Power supply with power-OFF: With on-site load disconnect ............ 43
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Mains power supply in conjunction with on-site power consumption . 44
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Smart Grid .......................................................................................... 44
Make connections at terminals X3.8/X3.9 ............................................. 46
Closing the heat pump ........................................................................... 46
4. Commissioning, inspec-
tion, maintenance
Steps - commissioning, inspection and maintenance ............................ 47
5. Maintenance Opening the casing door ........................................................................ 64
Overview of electrical components ........................................................ 64
Overview of internal components .......................................................... 65
Draining heat pump on the secondary side ........................................... 66
Checking the temperature sensors ........................................................ 66
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Viessmann NTC 10 k
Ω
(blue marking) ............................................... 67
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Viessmann Pt500A (green marking) ................................................... 68
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NTC 10 k
Ω
(no marking) ..................................................................... 69
Checking the fuses ................................................................................ 69
Index
Index
6153640