123/238
Building Technologies
Modular Heating Controller RMH760B
CE1P3133en
HVAC Products
9 Heating circuit control
05.02.2007
The Economy setpoints are shifted only if, otherwise, the Precomfort setpoints would
lie outside the Economy setpoints. Also refer to the graph above.
The input is to be activated via “Extra configuration“:
Main menu > Commissioning > Extra configuration > Heating circuit 1
(or
2
or
3
)
> Inputs >
Room setpoint adjuster abs
Assign terminal
Main menu > Commissioning > Settings > …
or
Main menu > Settings > Inputs
Operating line
Range
Factory setting
Value low
0 °C…value high
0 °C
Value high
Value low…50 °C
50 °C
The range set here must accord with the scale of the remote setpoint adjuster. The
factory settings are matched to the BSG21.1 remote setpoint adjuster and must not be
changed with this type of setpoint adjuster.
•
It is not recommended to use a QAA25 room temperature setpoint adjuster since its
characteristic is not linear so that setpoint deviations of maximum 1 K would occur.
Compensation is not possible
•
DC 0…10 V setpoint adjusters
cannot
be connected. The input is ready preconfig-
ured for 0…1,000
Ω
•
The adjusted setpoint represents the Comfort setpoint. At the same time, the Pre-
comfort setpoint is displaced parallel so that the difference between the 2 setpoints
will be maintained
9.4.4
Room temperature setpoint adjuster, relative
For room temperature setpoint readjustments in the Comfort and Precomfort modes, a
remote setpoint adjuster (e.g. QAA27 with room temperature sensor) can be configured.
The input is to be activated via “Extra configuration“:
Main menu > Commissioning > Extra configuration > Heating circuit 1
(or
2
or
3
)
> Inputs >
Room setpoint adjuster rel
Assign terminal
There are no settings required.
9.5
Weather-compensated heating circuit control
The flow temperature setpoint of heating circuit control is determined by the heating
curve and other influencing factors.
The main reference variable of heating circuit control is the outside temperature. It can
be acquired by different devices:
•
By the locally connected outside sensor
•
Via bus from some other device
The controller delivers 3 different types of outside temperatures whereby heating
circuits 2 and 3 have access to their own outside temperature. The other applications
(heating circuit 1, pumps, boiler, demand transformers, etc.) share a common outside
temperature.
Depending on the type of building construction, the outside temperature acts on the
space with a certain delay. For this reason, the reference variable used by the heating
curve is not the actual but the composite outside temperature.
Impact on the
Economy setpoint
Extra configuration
Setting
Notes
Extra configuration
Settings
Outside temperature
Composite outside
temperature
