Siemens AVS75.39 Series User Manual page 98

Minimum limitation of
the return temperature
Return setpoint min
Return setpoint min
OEM
Return influence
consumers
98 / 239
Siemens
Building Technologies
Without optimum burner start control and about 35 % load
80
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50
40
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20
13:00
ON Burner on
OFF Burner off
TKx Actual value of the boiler temperature
Tkmin boiler temperature minimum limitation
Line no. Operating line
2270 Return setpoint min
2271 Return setpoint min OEM
2272 Return influence consumers
If the boiler return temperature falls below the return temperature setpoint,
maintained boiler return temperature becomes active.
Maintain return temperature influences consumers, bypass pump control or the use
of a return controller.
The return temperature minimum limitation OEM is the lower limit value for the
return setpoint minimum.
If, with the boiler released, the return temperature falls below the set minimum
temperature, a locking signal will be calculated.
With proper pump circuits (heating circuit pump, DHW charging pump, external
load), the consumer pumps will be deactivated, or will stay deactivated, if the
locking signal exceeds the relevant threshold value
With mixing heating circuits, the flow temperature setpoint will be lowered in
accordance with the value of the locking signal
User manual RVS43.345
The settings in detail
13:30
TKx
TKmin
ON
OFF
14:00
CE1U2354en_021
2013-09-02