Qx Extension Module - Siemens RVS41.813 User Manual

Cooling circuit

QX extension module

190/258
Siemens Switzerland Ltd
HVAC Products
If the frost protection function on the extension module responds, its pump (Q24) is
activated and the mixing valve (Y23 / Y24) maintains the frost protection setpoint (10
°C). But the cooling circuit does not send a request to the heat source.
For monitoring frost protection on the extension module, sensor B16 is used. When
there is no flow temperature sensor installed, the frost protection function for the
heating circuit is performed with the common flow temperature (B21).
Frost protection for the plant (see page 194) also acts on the cooling circuit of the
extension module. The function can be activated / deactivated.
This extension module defines use of the QX... relay outputs.
Line no. Operating line
6030 Relay output QX21, QX22, QX23
Only RVS61..
6031
None
6032
El imm heater 1 flow K25
El imm heater 2 flow K26
Diverting valve cool strat2 Y28
System pump Q14
Cascade pump Q25
Heat generator shutoff valve Y4
Electric immersion heater DHW
K6
Circulating pump Q4
Storage tank transfer pump Q11
DHW interm circ pump Q33
DHW mixing pump Q35
Collector pump Q5
Collector pump 2 Q16
Solar pump external exchanger
K9
Solar controlling element buffer
K8
Solar controlling element
swimming pool K18
Electrical immersion heater
buffer K16
H1 pump Q15
H2 pump Q18
H3 pump Q19
Heat circ pump HCP Q20
2. 2nd pump speed HC1 Q21
2. 2nd pump speed HC2 Q22
2. 2nd pump speed HCP Q23
Diverting valve cooling Y21
Air dehumidifier K29
Heat request K27
Refrigeration request K28
Alarm output K10
Time program 5 K13
User manual RVS61.843, RVS41.813
6 The settings in detail
Only RVS41..
None
El imm heater 1 flow K25
El imm heater 2 flow K26
Diverting valve cool strat2 Y28
System pump Q14
Cascade pump Q25
Heat generator shutoff valve Y4
Electric immersion heater DHW
K6
Circulating pump Q4
Collector pump Q5
Collector pump 2 Q16
Solar pump external exchanger
K9
Solar controlling element buffer
K8
Solar controlling element
swimming pool K18
Electrical immersion heater
buffer K16
H1 pump Q15
H2 pump Q18
H3 pump Q19
Heat circ pump HCP Q20
Diverting valve cooling Y21
Air dehumidifier K29
Heat request K27
Refrigeration request K28
Alarm output K10
Time program 5 K13
Heating circuit pump HC1 Q2
DHW controlling element Q3
Supplementary source control
K32
28. September 2009
CE1U2355en_02