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Impact on the Economy
setpoint
Extra configuration
Setting
Notes
Extra configuration
Settings
Outside temperature
Composite outside
temperature
162/232
Building Technologies
HVAC Products
The Economy setpoints
lie outside the Economy setpoints (also refer to the diagram above).
The input is activated via the extra configuration:
Main menu > Commissioning > Extra configuration > Heating circuit > Inputs > Room setpoint
adjuster absolute
Assign terminal
Main menu > Commissioning > Settings > ... or
Main menu > Settings > Inputs
Operating line
Value low
Value high
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.
• We do not recommend 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
• It is not possible to connect a DC 0...10 V setpoint adjuster. The input is preconfig-
ured exclusively for 0...1000 Ω
• The adjusted setpoint represents the Comfort setpoint. The Precomfort setpoint is
shifted parallel so that the difference between the 2 setpoints is maintained
10.4.4 Room temperature setpoint adjuster, relative
For the room temperature setpoint readjustment in the Comfort and Precomfort modes, a
remote setpoint adjuster (e.g. QAA27 with room temperature sensor) can be configured.
The input is activated via the extra configuration:
Main menu > Commissioning > Extra configuration > Heating circuit > Inputs > Room setpoint
adjuster relative
Assign terminal
There are no settings required.
10.5
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 compensating variable of heating circuit control is the outside temperature. It
can be acquired via different sources:
• By the locally connected outside sensor
• Via bus from some other device
The controller provides a common outside temperature for all applications. This means
that outside temperature-dependent functions of the same controller operate with the
same outside temperature as the compensating variable.
Depending on the type of building construction, the outside temperature's impact on the
room is delayed. For this reason, the compensating variable used by the heating curve
is not the actual but the composite outside temperature.
Boiler Sequence Controller RMK770
10 Heating circuit control
are shifted only if, otherwise, the Precomfort setpoints would
Range
0 °C...value high
Value low...50 °C
Factory setting
0 °C
50 °C
CE1P3132en
23.04.2009
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