Viessmann BWT 241.A Series, Installation And Service Instructions Manual

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120
Hydraulic connections........................29
Hydraulic parameters.......................106
I
Impressed current anode...................59
Inspection...........................................53
Installation room.................................16
Installation room requirements...........16
Instantaneous heating water
heater
47, 48
■ Enable............................................65
■ High limit safety cut-out reset.........66
■ Parameter settings.........................65
■ Power supply 230 V~.....................46
Instructing the system user................66
Internal components
■ Overview.........................................73
Isolators.............................................43
K
KM BUS distributor............................43
L
Luster terminals.................................40
M
Magnesium anode.......................58, 59
Main PCB...........................................36
Mains isolator.....................................48
Maintenance......................................53
Maximum temperature limiter............39
Measuring magnesium anode resist-
ance.............................................58, 59
Minimum clearance............................17
Minimum flow rate..............................31
Minimum room volume.......................16
Mixer extension kit.............................40
N
Ni 500.................................................75
Noise..................................................77
Noise volume.....................................77
Non-return valve................................31
O
Off signal............................................47
ON/OFF switch..................................60
On-site connections.............................7
Opening programming unit................71
Opening the heat pump...............18, 53
Operator's log....................................53
Outside temperature sensor..............76
Overflow valve...................................31
Overview
■ Electrical connections.....................67
■ Internal components.......................73
■ Pumps............................................73
■ Sensors..........................................73
■ Valves.............................................73
P
Parameters
■ Cooling function..............................65
■ External functions...........................64
■ On-site components.......................62
■ Report...........................................106
Parameter settings
■ For changing over operating status
externally........................................64
■ For electric booster heater..............65
■ For external blocking......................64
■ For external demand......................64
■ For external starting of the compres-
sor...................................................64
■ For instantaneous heating water
heater.............................................65
■ For pumps and other components..63
■ For solar thermal system................65
■ For system scheme........................15
Parts lists.....................................78, 92
Phase monitor....................................48
Pipe separator....................................31
Keyword index
Keyword index
(cont.)
5601 598 GB