Function diagrams
Siemens Switzerland Ltd
HVAC Products
The following function diagrams show the components and designations used in the
description:
Brine-to-water heat pump
K2/E12
F
E15
E9
K1/E11
P
P
E26
B91
B92
Q8/E14
Air-to-water heat pump
K2/E12
K1/E11
B84
E9
P
Y22
B91
K19/E14
Mains voltage
E5
Low tariff
E6
Heat pump lock
E9
Low-pressure switch
E10
High-pressure switch
E11
Compressor 1 overload
E12
Compressor 2 overload
E14
Overload source / fan
E15
Flow switch source
E17
Manual defrost
E24
Flow switch consumers
E26
Pressure switch source
K1
Compressor 1
K2
Compressor 2
K19
Fan air-to-water heat pump
User manual RVS61.843, RVS41.813
6 The settings in detail
K25/26
Q9
B21
B82
E10
E15
P
B81
E26
B91
B83
B71
Q8/E14
F
E24
K25/26
Q9
B21
B82
B81
E10
P
B83
B71
F
E24
K25
K26
Q8
Q9
Y22
Low-voltage
B21
B71
B81
B82
B83
B84
B91
B92
Water-to-water heat pump
K25/26
K2/E12
B82
F
E9
K1/E11
P
B81
P
B83
B92
Electrical immersion heater 1
Electrical immersion heater 2
Source pump
Condenser pump
Process reversing valve
air-to-water heat pump
Flow temperature heat pump
Return temperature heat pump
Hot-gas temperature compressor 1
Hot-gas temperature compressor 2
Refrigerant temperature liquid
Evaporator temperature
air-to-water HP
Source inlet temperature
Source outlet temperature
CE1U2355en_02
28. September 2009
Q9
B21
E10
P
B71
E24
F
113/258