Siemens AVS75.39 Series User Manual page 157

Solar
Solar controlling element
External solar exchanger
Output relay QX
Relay outputs QX...
Siemens
Building Technologies
Line no. Operating line
5840 Solar controlling element
Charging pump ¦ Diverting valve
5841 External solar exchanger
Jointly ¦ DHW storage tank ¦ Buffer storage tank
In place of a collector pump and diverting valves for integrating the storage tanks,
the solar plant can also be operated with charging pumps.
When using a diverting valve, the flow can only pass through one heat exchanger
at a time. Only alternative operation is possible.
When using a charging pump, the flow can pass through all heat exchangers 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 for DHW and as a buffer storage tank, or
exclusively for one of the two.
Line no. Operating line
5890 Relay output QX1, QX2, QX3, QX4, QX5
5891
None ¦ Circulating pump Q4 ¦ El imm heater DHW K6 ¦ Collector pump Q5 ¦
Cons circuit pump VK1 Q15¦ Boiler pump Q1 ¦ Bypass pump Q12 ¦ Alarm
5892
output K10 ¦ 2nd pump speed HC1 Q21 ¦ 2nd pump speed HC2 Q22 ¦ 2nd
5894
pump speed HC3 Q23 ¦ Heat circuit pump HC3 Q20 ¦ Cons circuit pump VK2
5895
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 ¦ Swimming pool 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 ¦ Refrigeration request
K28 ¦ Air dehumidifier K29 ¦ Diverting valve cooling Y21 ¦ Heat circuit pump
HC1 Q2 ¦ Heat circuit pump HC2 Q6 ¦ DHW ctrl elem Q3 ¦ Suppl source
control K32 ¦ Excess heat discharge K11
Depending on the selection made, setting of the relay outputs assigns appropriate
extra functions to the basic diagrams. For detailed information, refer to section
"Application diagrams".
None
The relay output is not assigned any function. The relay is deenergized.
Circulating pump Q4
The connected pump serves as a DHW circulating pump.
The time schedule for the circulating pump can be set on operating line "Circulating
pump release" (1660). "Circulating pump cycling" can be set on operating line
1661, "Circulation setpoint" on operating line 1663.
El imm heater DHW K6
Using the connected electric immersion heater, the DHW can be charged
according to operating lines "El imm heater optg mode" (5660) and "El immersion
heater release" (5061).
The electric immersion heater must be fitted with a safety limit thermostat!
"El imm heater optg mode" must be appropriately set.
Collector pump Q5
For control of the collector pump of the solar collector circuit.
User manual RVS43.345
The settings in detail
157 / 239
CE1U2354en_021
2013-09-02