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Legend (catalog of plant diagrams and extra functions)
K1
Compressor 1
RG
Room temperature sensor
K2
Compressor 2
B1
Flow temperature sensor HC1
K8
Solar controlling element buffer
B9
Outside sensor
K9
Solar pump ext. heat exchanger
B10
Common flow sensor
K10
Alarm output
B12
Flow temperature sensor HC2
K6
Electric immersion heater DHW or combi
storage tank
B13
Swimming pool sensor
K16
Electrical immersion heater, buffer or combi
storage tank
B15
Flow sensor prim controller
K18
Solar controlling element swimming pool
B16
Flow sensor cooling 1
K19
Fan air-to-water heat pump
B3
DHW temperature sensor
K25
Electric immersion heater flow stage 1
B31
Second DHW temperature sensor
K26
Electric immersion heater flow stage 2
B35
DHW primary controller sensor
E5
Low tariff
B36
DHW charging sensor
E6
Heat pump lock
B38
DHW consumption sensor
E9
Low-pressure switch
B39
DHW circulation sensor
E10
High-pressure switch
B4
Buffer storage tank temperature
sensor, top
E11
Compressor 1 overload
B41
Buffer storage tank temperature
sensor, bottom
E12
Compressor 2 overload
B42
Buffer storage tank temperature
sensor, center
E14
Overload source
B6
Collector sensor
E15
Flow switch source
B61
Collector sensor 2
E17
Manual defrost
B63
Solar flow sensor
E24
Flow switch consumers
B64
Solar return sensor
E26
Pressure switch source
B9
Outside sensor
Q2
1. 1st heating circuit pump
B21
Flow temperature heat pump
Q3
DHW diverting valve / charging pump
B70
Cascade return sensor
Q5
Collector pump
B71
Return temperature heat pump
Q6
2. 2nd heating circuit pump (extension
module)
B81
Hot-gas temperature compressor 1
Q8
Source pump
B82
Hot-gas temperature compressor 2
Q9
Condenser pump
B83
Refrigerant temperature liquid
Q11
Storage tank charging pump
B84
Evaporator temperature
air-to-water HP
Q14
System pump
B91
Source inlet temperature
Q15
Pump H1
B92
Source outlet temperature
Q18
Pump H2
Y1 / Y2
1. Heating circuit mixing valve opening
/ closing
Q19
Pump H3
Y4
Heat source shutoff valve
Q20
Heating circuit pump HCP
Y5 / Y6
2. Heating circuit mixing valve opening
/ closing
Q21
2. 2nd pump speed HC1
Y19/Y20 Primary controller
Q22
2. 2nd pump speed HC2
Y21
Diverting valve cooling
Q23
2. 2nd pump speed HCP
Y23/24
Actuator cooling circuit (e’module)
Q24
Cooling circuit pump
Y21
Diverting valve cooling
Q25
Cascade pump
Y22
Process reversing valve
Q33
Intermediate heating circuit pump
Y31/Y32 DHW primary controller mixing valve
Q34
Instantaneous DHW heater pump
Y33/Y34 Instantaneous DHW heater valve
241/258
Siemens Switzerland Ltd
User manual RVS61.843, RVS41.813
CE1U2355en_02
HVAC Products
7 Plant diagrams
28. September 2009