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Building Technologies Modular Heating Controller RMH760B CE1P3133en
HVAC Products 8 Main controller and primary controller 05.02.2007
The flow or return temperature sensor of primary controller type 2 can be used for
display purposes.
By configuring the outputs, it is determined whether primary controller type 1 or 2 is used.
Without configuration of a mixing valve, primary controller type 2 is automatically used.
But a flow temperature increase can also be defined with primary controller type 2 to
compensate for temperature losses in the case of long pipes. For more detailed informa-
tion about flow temperature increase, refer to section
8.7 “Setpoint increase”.
8.3.1 Mixing valve control
For control of the mixing valve, a 3-position or DC 0…10 V actuator can be used. The
selection is made by configuring the relevant output.
8.3.2 Pump control
Pump control offers a number of monitoring choices independent of whether the pump
is a single pump or twin pump.
For more detailed information about pump control and twin pumps, refer to section
5.8
“
Pump control and twin pumps”.
Main menu > Commissioning > Settings > … or
Main menu > Settings > Main controller > Fault settings > Overload pump
Operating line Range Factory setting
Fault acknowledgement None / Acknowledge /
Acknowledge and reset
Acknowledge
and reset
Fault acknowledgement B None / Acknowledge /
Acknowledge and reset
Acknowledge
and reset
Main menu > Commissioning > Settings > … or
Main menu > Settings > Primary controller > Fault settings > Overload pump
Operating line Range Factory setting
Fault acknowledgement None / Acknowledge /
Acknowledge and reset
Acknowledge
and reset
Fault acknowledgement B None / Acknowledge /
Acknowledge and reset
Acknowledge
and reset
8.4 Plant operation
Plant operation indicates whether the primary controller is switched on and whether the
pump is running.
Main menu > Main controller > Plant operation
Main menu > Primary controller > Plant operation
Operating line Range Factory setting
Preselection
Auto / Off* Auto
Setp preselection manual** ---- / 8…140 °C
----
State Off / On
Cause
Commissioning /
Request /
Frost protection for con-
sumer /
Frost protection for the
flow /
Fault setting primary
controller
Fault setting main
controller
Plant operation
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