Siemens AVS75.39 Series User Manual page 223

Key Mains voltage
Siemens
Building Technologies
Diagram Function
T2 Burner 1st stage; Release modulating burner
T8 Burner 2nd stage; air damper modulating burner = Open
Q1 Boiler pump
Q2 1. Heating circuit pump
Q3 DHW charging pump / diverting valve
Q4 Circulating pump
Q5 Collector pump
Q6 2. Heating circuit pump
Q10 Solid fuel boiler pump
Q11 Storage tank charging pump
Q12 Bypass pump
Q14 System pump
Q15 Consumer circuit pump 1
Q16 Collector pump 2
Q18 Consumer circuit pump 2
Q19 Swimming pool circuit pump
Q20 Heating circuit pump heating circuit 3:
Q21/22/23 2. Pump stage HC pump 1-3
Q24 Cooling circuit pump
Q25 Cascade pump
Q33 DHW intermediate circuit pump
Q34 Instantaneous DHW heater pump pump/controlling element
Q35 DHW mixing pump
Y1 1. Heating circuit mixing valve
Y4 Heat source shutoff valve
Y5 2. Heating circuit mixing valve opening
Y6 2. Heating circuit mixing valve closing
Y7 Maintain return temp valve OPENING
Y8 Maintain return temp valve CLOSING
Y9 Maintain 'return solid fuel' boiler valve OPEN
Y10 Maintain 'return solid fuel' boiler valve CLOSED
Y15 Buffer return valve
Y19 Primary controller
Y21 Diverting valve cooling
Y25 Maintain return temperature cascade valve OPEN
Y26 Maintain return temperature cascade valve CLOSED
Y31 DHW primary controller mixing valve opening
Y32 DHW primary controller mixing valve closing
Y33 Instantaneous DHW heater valve opening
Y34 Instantaneous DHW heater valve closing
K6 electric immersion heater
K5 Air damper modulating burner = CLOSED
K8 Solar controlling element buffer
K9 Solar pump ext. heat exchanger
K10 alarm output
K11 Overtemperature protection
K13 Time program 5 / DHW
K17 Flue gas relay
K18 Solar controlling element swimming pool
K27 heat demand
K28 Refrigeration request
K29 Dehumidifier
K30 Ignition aid fan
K32 Supplementary source control
User manual RVS43.345
Plant diagrams
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CE1U2354en_021
2013-09-02