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Parameter Description
P-32
Set temperature for frost protection function.
The frost protection function will be activated as soon the room temperature measured is
below the set frost protection temperature.
› Factory setting: 8°C
› Setting range: 3 - 13°C
Operation
› Press the sensor button . The display shows 8.0.
› Press the sensor button or to change the value.
› Select one of the following options:
– Press the sensor button to save the changed setting. The display shows the next parameter P-33.
– Press the sensor button to cancel the procedure. The display shows the selected parameter.
P-51
Set priorities for change-over of heating/cooling and congure output for heating/cooling or burner start.
ATTENTION
If communication between wireless connection modules has been selected, then the settings of P-51 must be the
same at all wireless connection modules with a wireless room thermostat. Otherwise the plant will not function
properly.
If option “0” or “1” has been selected, then the heating/cooling unit performs the master function and determines
the heating/cooling mode. The mode of operation for heating/cooling can not be set by any wireless room ther-
mostat nor be inuenced by the wireless connection module.
If option “2” has been selected, then the mode of operation for heating/cooling is determined by any wireless
room thermostat. The heating/cooling unit has no inuence on the mode of operation for heating/cooling.
In addition it is possible to set one wireless room thermostat as master for heating/cooling.
› See parameter description P-48, page 81.
› Factory settings: Option “0”
› Options:
– 0: C/O-Input and C/O-Output of the wireless connection module have priority.
– 1: Burner start and C/O-Input of the wireless connection module have priority.
The C/O-Output is congured as burner start and switches o immediately
when heating demand is not required. In cooling mode this output is inactive.
– 2: The change-over between heating and cooling can only be done with the wireless room thermostat.
In cooling mode the C/O-Output of the wireless connection module is active.
Operation
– Press sensor button . The display shows 0.
– Press sensor button or to select option 0, 1 or 2.
– Select one of the following options:
– Press sensor button , to save the changed settings. The display shows the next parameter P-52.
– Press sensor button , to interrupt the procedure. The display shows the selected parameter.
P-66
Activate or deactivate “optimised thermomotor control” function.
The optimised thermomotor control is a specially developed control that saves energy.
This control also replaces semi-proportional control.
Initially, the thermomotor will receive a 100% signal for a certain amount of time. Aer this
warmup period, the thermomotor receives pulse/pause signals dependent on the ambient temperature,
congured using the options in this parameter (P-66). This control helps to reduce energy consumption
considerably.
NOTE
We recommend deactivating optimised thermomotor control at ambient temperatures below 10°C.
› Factory setting: Option “0”
› Options:
– 0: Deactivated, ambient temperature below 10°C
– 1: Activated, ambient temperature between approx. 10°C and 25°C
– 2: Activated, ambient temperature between approx. 25°C and 50°C
Procedure
› Press the sensor button . The display shows 0.
› Press the sensor button or to set option 0, 1 or 2.
› Select one of the following options:
– Press the sensor button to save the changed setting. The display shows the next parameter P-67.
– Press the sensor button to cancel the procedure. The display shows the selected parameter.
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