Basic Documentation

64/256
Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 6 Boiler temperature control 2017-09-29
Main menu > Commissioning > Extra configuration > Boiler > Inputs
Operating line
Adjustable values / display / remarks
Boiler sensor
Return sensor
Release input
Checkback signal burner
Fault burner
Flue gas temperature sensor
Flue gas meas mode contact
[Boiler pump] overload
[Boiler pump B] overload
Flow signal pump
Checkb sign shutoff valve
Fault input 1
Fault input 2
Fault input 3
Main menu > Commissioning > Extra configuration > Boiler > Outputs
Operating line
Adjustable values / display / remarks
Burner stage 1
Burner stage 2
Modulating burner 3-pos
Modulating burner mod
Setpoint compensation
Boiler pump
Boiler pump B
Pump function
Boiler pump or bypass pump
Shutoff valve
Maint boiler return temp 3-pos
Maint boiler return temp mod
For plant types with boiler, a boiler temperature sensor will automatically be configured.
This sensor is mandatory for boiler temperature control, but it also serves for optional
functions, such as minimum or maximum limitation of the boiler temperature.
For plant types with boiler, the return temperature sensor will always be configured too.
For plant types using maintained boiler return temperature control via the mixing valve,
this sensor is mandatory. In all other cases, the return temperature sensor can be used
for maintained boiler return temperature via the bypass pump, maintained boiler return
temperature with locking signal, or simply for display purposes.
Using the release input, a boiler can be locked from an external location. The operating
action of the input can be parameterized at the respective terminal on Main menu >
Settings > Inputs.
The burner checkback signal can be used to provide additional supervision of the
burner. If the checkback signal is not received after an adjustable period of time, the
burner is considered to have locked out. If the burner checkback signal has been
configured, the burner hours run counter is started only after the checkback signal has
been received. If no checkback signal is configured, the burner hours run counter is
started when stage 1 is switched on. This also gives consideration to the prepurge time,
etc. Also refer to section 6.9 "Boiler faults".
Inputs
Outputs
Boiler sensor
Return sensor
Release input
Checkback signal burner