6 720 820 872 (2016/12)
CR 400 | CW 400 | CW 800
Service menu | 35
•
With
room temperature-dependent control
the heating
reacts directly to changes of the required or measured
room temperature.
–
Room-temp.-compensated
: The room temperature is
controlled by adapting the flow temperature. This
control behaviour is suitable for apartments and
buildings with major load fluctuations.
–
Room temperature output
: the room temperature is
controlled by adapting the heat output of the heat
source. This control behaviour is suitable for
apartments and buildings with minor load fluctuations
(e.g. open-plan houses). This control type is only
possible in heating systems with one heating circuit
(heating circuit 1) without MM 100/MM 200heating
circuit module.
•
Ctrl type h. circ. 1
>
Constant
: the flow temperature in
the selected heating circuit is independent of the outside
and room temperature. The available setting options in the
corresponding heating circuit are highly limited. Setback
type, holiday function and remote control, for example, are
not available. Settings for a constant heating circuit are
only possible via the service menu. The constant heating
serves to supply heat, e.g. to a swimming pool or a
ventilation unit.
–
Heat is supplied only if
On
(constant heating circuit
permanently heated) or
Auto
(constant heating circuit,
heated at times according to a time program) is
selected as operating mode and if a heat requirement is
present at the MM 100/MM 200 module via MD1.
If one of the two conditions is not fulfilled, the constant
heating circuit is off.
–
A heating circuit, for which
Ctrl type h. circ. 1
>
Constant
is set, is not displayed in the standard
display.
–
To operate the constant heating circuit without time
program, the operating mode must be set to
(permanent)
On
or (permanent)
Off
.
–
The frost protection must be outside-temperature-
dependent and the DHW priority must be activated.
–
The electrical integration of a constant heating circuit
into the system is performed via a MM 100/MM 200
module.
–
The MC1 terminal in the MM 100/MM 200 module
must be bridged according to the technical
documentation of the module.
–
The T0 temperature sensor can be connected to the
MM 100/MM 200 module for the constant heating
circuit.
–
Further information on the connection is available in
the technical documentation of the MM 100/MM 200
module.
Set the heating system and heating curves for weather-
compensated control
▶ Set the heating type (radiator, convector or underfloor
heating system) in the
Central heating settings
>
Heating circuit 1 ... 8
>
Heating system heat circ. 1
menu.
▶ Set the control type (weather-compensated or weather-
compensated with base point) in the
Ctrl type h. circ. 1
menu.
Menu items that are not required for the selected heating
system and control type are disabled. The settings only
apply for the selected heating circuit, if available.
Menu for setting of the heating curve
Menu item
Adjustment range
Description
Design
temperature
or
End point
30 ...
75
... 85 °C
(radiator/convector)
30 ...
45
... 60 °C
(underfloor heating
system)
The design temperature is only available with weather-compensated control
without base point. The design temperature is the flow temperature that is reached
at the minimum outside temperature and therefore affects the steepness/
inclination of the heating curve.
The end point is only available with weather-compensated control with base point.
The end point is the flow temperature reached when the outside temperature is at
the minimum and, thus, affects the steepness/inclination of the heating curve.
When the base point is to above 30°C, the base point is the minimum value.
Base point
e.g. 20 ...
25 °C
... End
point
The base point of the heating curve is only available with weather-compensated
control with a simple heating curve.
Table 16 Set heating curve menu
Summary of Contents for CR 400
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