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37
The maximum return line temperature, i.e. temperature of the water returning from the heating system, should
be adapted to each individual installation. The correct temperature value for your system will be entered by your
installation contractor in connection with installation and can be adjusted later.
The temperature of the water distributed to the water heater is controlled by the regulating pressure switch
and cannot be adjusted.
Reading of warm water temperature.
To check the actual warm water temperature on the display:
1
Open the main menu INFORMATION by pressing the right- or left-hand button once.You will find the cursor at the
sub-menu OPERATION.
2
Press the "down" button to move the cursor to the sub-menu called TEMPERATURE.
3
Open the menu by pressing the right-hand button once.
4
Press the "down" button to move the cursor to the parameter WARMWATER.
5
Open the selected parameter by pressing the right-hand button for 3 seconds.
A graph will be shown of last hour's warm water temperatures.
6
Press the left-hand button three times to return to the main menu.
The value displayed next to the parameter WARMWATER is the actual hot water temperature. The value in
brackets is the temperature at which warm water production will start. When the actual temperature falls below
that value, warm water production starts. The starting value is not adjustable.
Check of Operating Mode
In the event of an alarm, The background light of LCD will flash and an alarm message will be displayed.
Check the alarm indicator regularly to make sure that the heat pump works properly. You would not always notice if
there is something wrong, as the auxiliary heater would start automatically (provided, of course, operating mode
AUTO was selected). For more information, please refer to the chapter ALARM MESSAGES on p. 40.
Maximum Return Line Temperature
Warm Water Production
Regular Checks
ALARM
AND.HEAT OVER
OR FLOW TROUBLE
Control
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