Operation Manual

119/180
Siemens Schweiz AG User Manual CE1U2354en
HVAC Products Configuration 23. August 2007
When using a charging pump, all heat exchangers can be used at the same time.
Either parallel or alternative operation is possible.
In the case of solar plants with 2 storage tanks, it must be selected whether the
external heat exchanger shall be used jointly for DHW and as a buffer storage tank, or
exclusively for one of the two.
Output relay QX
Line no. Operating line
5890
5891
5892
5894
Relay output QX1,
2 ,3, 4
None
Circulating pump Q4
El imm heater DHW K6
Collector pump Q5
H1 pump Q15
Boiler pump Q1
Bypass pump Q12
Alarm output K10
2nd pump speed HC1 Q21
2nd pump speed HC2 Q22
2nd pump speed HCP Q23
Heat circ pump HCP Q20
H2 pump Q18
System pump Q14
Heat gen shutoff valve Y4
Solid fuel boiler pump Q10
Time program 5 K13
Buffer return valve Y15
Solar pump ext exch K9
Solar ctrl elem buffer K8
Solar ctrl elem swi pool K18
Collector pump 2 Q16
H3 pump Q19
Flue gas relay K17
Assisted firing fan K30
Cascade pump Q25
St tank transfer pump Q11
DHW mixing pump Q35
DHW interm circ pump Q33
Heat request K27
Refrig demand K28
Dehumidifier K29
Diverting valve, cooling Y21
Depending on the selection made, setting the relay outputs assigns appropriate extra
functions to the basic diagrams. For detailed information, refer to the section
“Application diagrams“.
Multifunctional output QX4 can be used only if the operating line "Source type"
(operating line 5770) is set to "1-stage", "Modulating UX" or "Without boiler sensor".
DHW circulating pump Q4
The connected pump serves as a DHW circulating pump.
Operation of the pump can be scheduled as required on operating page “DHW”,
operating line “Release circulating pump”.
DHW electric immersion heater K6
Using the connected electric immersion heater, the DHW can be heated up according
to operating page “DHW storage tank“, operating line “electric immersion heater“.
The electric immersion heater must be fitted with a safety limit thermostat!
Operating line 5060 of the electric immersion heater’s operating mode must be
appropriately set.
External solar exchanger