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Siemens Switzerland Ltd
User manual RVS61.843 CE1U2355en_02
HVAC Products 7 Plant diagrams 23. November 2007
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 Electric immersion heater, buffer or combi
storage tank
B15 Flow sensor primary controller
K18 Solar controlling element swimming pool B16 Flow sensor cooling 1
K19 Fan air-to-water heat pump B3 DHW temperature sensor
K26 Electric immersion heater flow B31 Second DHW temperature sensor
E5 Low-tariff B35 DHW primary controller sensor
E6 Heat pump lock B36 DHW charging sensor
E9 Low-pressure switch B38 DHW consumption sensor
E10 High-pressure switch B39 DHW circulation sensor
E11 Compressor 1 overload B4 Buffer storage tank temperature
sensor, top
E12 Compressor 2 overload B41 Buffer storage tank temperature
sensor, bottom
E14 Overload source B42 Buffer storage tank temperature
sensor, center
E15 Pressure and / or flow switch source B6 Collector sensor
E17 Manual defrost B61 Collector sensor 2
Ex Flow switch consumers B63 Solar flow sensor
Q2 1. 1st heating circuit pump B64 Solar return sensor
Q3 DHW diverting valve / charging pump B9 Outside sensor
Q5 Collector pump B21 Flow temperature heat pump
Q6 2. 2nd heating circuit pump (extension
module)
B70 Cascade return sensor
Q8 Source pump B71 Return temperature heat pump
Q9 Condenser pump B81 Hot-gas temperature compressor 1
Q11 Storage tank charging pump B82 Hot-gas temperature compressor 2
Q14 System pump B83 Refrigerant temperature liquid
Q15 Pump H1 B84 Evaporator temperature
air-to-water HP
Q18 Pump H2 B91 Source inlet temperature
Q19 Pump H3 B92 Source outlet temperature
Q20 Heating circuit pump HCP Y1 / Y2 1. Heating circuit mixing valve opening
/ closing
Q21 2. 2nd pump speed HC1 Y4 Heat source shutoff valve
Q22 2. 2nd pump speed HC2 Y5 / Y6 2. Heating circuit mixing valve opening
/ closing
Q23 2. 2nd pump speed HCP Y19/Y20 Primary controller
Q24 Cooling circuit pump Y21 Diverting valve cooling
Q25 Cascade pump Y23/24 Actuator cooling circuit (e’module)
Q33 Intermediate heating circuit pump Y21 Diverting valve for cooling
Q34 Instantaneous DHW heater pump Y22 Process reversing valve
Y31/Y32 DHW primary controller mixing valve
Y33/Y34 Instantaneous DHW heater valve
7.2 Heat / refrigeration source variants / extra
functions
For source variants and extra functions, refer to separately available Partial Plant
Diagram Catalog.
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