Basic Documentation

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Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 5 General functions, fundamentals 2017-09-29
Number
Text
Effect
5201
Hol/sp day prgm failure HC 1
Nonurgent message; must not be
acknowledged
5211
Hol/sp day prgm failure HC 2
Nonurgent message; must not be
acknowledged
5221
Hol/sp day prgm failure HC 3
Nonurgent message; must not be
acknowledged
5231
Hol/sp day prgm failure
DHW
Nonurgent message; must not be
acknowledged
5202
>1 hol/sp day prgm HC 1
Nonurgent message; must be
acknowledged
5212
>1 hol/sp day prgm HC 2
Nonurgent message; must be
acknowledged
5222
>1 hol/sp day prgm HC 3
Nonurgent message; must be
acknowledged
5232
>1 hol/sp day prgm DHW
Nonurgent message; must be
acknowledged
When evaluating the priority in the holidays / special day program, only the first 2
entries are taken into consideration. If more than 2 overlapping entries are made, the
situation can occur that the special day no longer has priority over holidays.
5.3 Frost protection for the plant
Main menu > Commissioning > Settings > … or
Main menu > Settings > Protective functions
Operating line
Range
Factory setting
Frost prot for plant ON (cycling)
–5…10 °C
2 °C
Frost prot for plant ON (cont)
–50…2 °C
–5 °C
To protect the water pipes from freezing, frost protection for the plant can activate the
respective pump depending on the actual outside temperature.
This takes place independent of heat requests. Prerequisite is, however, that "Frost
protection for the plant" has been activated for the relevant pump.
Main menu > Commissioning > Settings > … or
Main menu > Settings > Heating circuit 1 (or 2 or 3) > Limitations
Operating line
Range
Factory setting
Frost protection for the plant
Off / On
On
Main menu > Settings > DHW > Limitations
Operating line
Range
Factory setting
Frost prot plant primary pump
Off / On
Off
Frost prot plant secondary pump
Off / On
Off
Frost prot plant circulating pump
Off / On
Off
Main menu > Settings > Primary controller > Limitations
Main menu > Settings > Main controller > Limitations
Operating line
Range
Factory setting
Frost protection for the plant
Off / On
Off
Fault status messages
General settings
Settings per function
block