Basic Documentation

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Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 6 Boiler temperature control 2017-09-29
TBoMin
3131D40
Burner
swich-on
command
TBoMin
3131D41
Burner
swich-on
command
Optimization of minimum boiler
temperature On
Optimization of minimum boiler
temperature Off
6.6.4 Protection against boiler overtemperatures
To protect the boiler against overtemperatures on burner shutdown because, possibly,
none of the heat consumers draws heat, a consumer overrun time can be set.
Main menu > Commissioning > Settings > … or
Main menu > Settings > Boiler > Limitations
Operating line
Range
Factory setting
Consumer overrun time
0…60 min
6 min
After the burner has shut down, the overrun time ensures that the heating circuits and
DHW heating will still draw heat for that period of time, provided they were consuming
heat up to one minute before the burner was shut down. In any case, pumps and
mixing valves have an overrun time of 60 seconds. For more detailed information, refer
to section 5.4 "Pump overrun and mixing valve overrun".
The overrun time also applies to boiler pumps and shutoff valves (including mixing
valves for the maintained boiler return temperature).
6.6.5 Pump kick and valve kick
The pump kick is a protective function which is performed periodically. It prevents
pumps and / or valves from seizing after longer off periods. For more detailed
information, refer to section 5.5 "Pump kick and valve kick".
6.6.6 Frost protection (release input Off)
If an external release input is switched to "Off", it can be determined here whether or
not the frost protection function shall be active:
Entry
Effect
On
Frost protection active
Off
Frost protection inactive
6.6.7 Frost protection for plant with boiler pump
Set whether plant frost protection acts on boiler pump. For details on plant frost
protection, see Section 5.3 "Frost protection for the plant".