Basic Documentation

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Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 6 Boiler temperature control 2017-09-29
6.10 Burner hours run counter and burner start
counter
For burner stage 1 or the burner’s basic stage, a checkback signal can be configured.
In addition to burner supervision, this checkback signal is used for the burner hours run
counter and the burner start counter.
When there is no checkback signal, the burner hours run counter is started by the
output relay for burner stage 1.
Main menu > Commissioning > Extra configuration > Boiler > Inputs
Operating line
Adjustable values / display / remarks
Checkback signal burner
Assign input
The number of burner hours run and the number of burner starts are shown on the
"Inputs/setpoints" menu. On the user level, they can only be read, on the service level,
they can also be readjusted. It is thus possible to set the effective values.
or Main menu > Boiler > Inputs/setpoints
Operating line
Range
Factory setting
Burner hours run
0…99999 h
0 h
Burner start counter
0…99999
0
6.11 Fault handling
Number
Text
Effect
40 Boiler sensor error
Urgent message; must be acknowledged.
No boiler stop; the burner is shut down
41 Boiler return sensor error
Nonurgent message; must be
acknowledged. No boiler stop
In the case of plant with mixing valve for
the maintained boiler return temperature,
the mixing valve will be driven to the fully
closed position when the return
temperature sensor is faulty and then
deenergized to make possible manual
adjustment. Otherwise, the control system
behaves like a plant without return
temperature sensor
321
Flue gas temp sensor error
Nonurgent message; must be
acknowledged. No boiler stop
Number
Text
Effect
2301
Boiler burner fault Urgent message.
Acknowledgement can be parameterized;
factory setting: "Acknowledge". Boiler stop
2311
Burner no checkback signal
Urgent message; must be acknowledged
and reset. Effect can be parameterized;
factory setting: "Stop". Boiler stop
Number
Text
Effect
2321
Boiler water shortage Priority, effect and acknowledgement can
be parameterized.
Factory setting: "Urgent". Boiler stop, must
be acknowledged
Sensor error
Burner faults
Boiler faults