Viessmann VITOCAL 222-S Installation And Service Instructions Manual page 146

Type awt-ac 221.a04 to a13 compact heat pumps, split version for heating and cooling operation
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Keyword index
Keyword index
M
Magnesium anode.......................81, 82
Magnesium anode, replacing.............82
Main PCB...........................................50
Mains isolator.....................................67
Maintenance......................................71
Maximum temperature limiter............52
Measuring magnesium anode resist-
ance.............................................81, 82
Message connections........................53
Minimum clearances
■ External unit....................................21
■ Internal unit.....................................24
Minimum flow rate..............................43
Minimum room volume.......................24
Minimum system pressure.................78
Mixer extension kit.............................53
N
Non-return valve..........................44, 77
NTC curve........................................105
O
Oil lift bend.........................................32
Oil lift bends.......................................33
ON/OFF switch..................................85
On-site connections.............................7
Opening for 230 V cables....................8
Opening for LV leads...........................7
Opening programming unit................95
Opening the heat pump.....................71
Opening the internal unit....................25
Operating pressure............................78
Operator's log....................................76
Output compressor stage...................87
Output data, heating........................135
Outside temperature sensor......13, 103
146
(cont.)
Overflow valve...................................43
Overview
■ Electrical connections.....................95
■ Internal components.................97, 99
■ Pumps......................................97, 99
■ Sensors....................................97, 99
■ Valves.......................................97, 99
P
Parameters
■ Cooling function..............................90
■ External functions...........................89
■ For on-site components..................88
■ For the heat pump..........................87
■ Pumps............................................88
■ Swimming pool water heating.........91
Parameter settings
■ Electric booster heater....................91
■ For DHW circulation pump.............88
■ For extension kit, mixer..................88
■ For heating circuit pump.................88
■ For remote control..........................88
■ For system scheme........................16
■ For Vitocom 100.............................89
■ Instantaneous heating water heater91
Parts lists.................................107, 117
PCB
■ For BUS connection.......................58
PCBs..................................................50
Performance data, cooling...............135
Photovoltaic.......................................93
Pipe bends, flaring.............................38
Pipe bends as anti-vibration mounts..20
Pipe ends, flaring...............................35
Pipe openings
■ For refrigerant lines..................35, 37
Pipe outlet..........................................31
Pipes, securing..................................35
Pipe separator....................................44

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