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Real heating circuit
Heat requisition Heating
circuit
Flow sensor (TFlPrCtr)
Room sensor (Tr)
Return sensor (TRtPrCtr)
Heating circuit pump A
(HctrPu_A)
Heating circuit pump B
(HCtrPu_B)
Mixing valve for heating
circuit (HCtrVlVMx)
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The setting to be selected is "Heating circuit active"; the heating circuit entries are made
on the operator unit as usual. In that case, setting "Heating circuit active / inactive" is of
no importance.
When a heating circuit pump and / or a heating circuit mixing valve is / are configured,
the heating circuit will automatically be activated; a "real" heating circuit is created. In
that case, setting "Heating circuit active/ inactive" is of no importance.
This setting defines whether the heating circuit is "connected" directly to the main dis-
tributor or after the primary controller.
Flow temperature sensor
Room temperature sensor
Return temperature sensor
Heating circuit pump A (the menu item does show designation A).
Heating circuit pump B, if the heating circuit pump is a twin pump.
3-position or modulating mixing valve for the heating circuit
For more detailed information, refer to chapter 10 "Heating circuit control".
3.4.5
Heat requisition
Main menu > Commissioning > Extra configuration > Heat requisition [%]
Operating line
Heat requisition [%] acting on
PrCtrVlvMx
T
TRtPrCtr
TMnFl
T
TRtMn
TRtCo
T
T
In place of heat requisition from a heating circuit, a heat requisition can also be made
by an air handling plant (e.g. RMU7...) or individual room temperature control (e.g.
RXB...). This heat requisition is not made in the form of an absolute temperature re-
quest but as a percentage. The conversion from % to °C is made by a heat demand
transformer.
Boiler Sequence Controller RMK770
3 Commissioning
Range
Main distributor / Pri-
mary controller
TFlPrCtr
TPu_A
T
Primary
TPu_B
controller
T
Main
distributor
Factory setting
Main distributor
Heat requisition [%]
CE1P3132en
01.03.2005
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