Control
31
Adjustments to be made regularly
Adjustment
of
the
CURVE
value
The heat curve will be adjusted by the CURVE value. This value indicates the supply line temperature to the
radiators at 0°C outside temperature. At outside air tempe- ratures lower than 0°C, the water sent to the radiators
will be warmer than 40°C.
At outside temperatures higher than 0°C, the water will be colder than 40°C. When you increase the CURVE value,
the heat curve will become steeper and when you reduce it, it will become flatter.
This is the most energy and cost efficient way to set the indoor temperature and should therefore be used for long
term temperature settings. If you wish to make
a temporary change of temperature, you can simply change the ROOM value (see
”Adjustment of the ROOM value” on page 33) .
Factory setting of CURVE value is 40°C, at an outside
air
temperature
of
0°C.
The value
is
adjustable between 22°C
and 56°C
If you wish to change the CURVE value:
1 Open the main menu INFORMATION by pressing the right- or the left-hand button once.
You will find the cursor at the sub-menu named OPERATION
2 Press the ”down” button to move the cursor to the sub-menu called HEAT CURVE.
3 Press the right-hand button once to open the menu. You will find the cursor at the parameter CURVE
4 Open the selected parameter by pressing the right-hand button once.
5 Increase or reduce the preset value using the ”up” or ”down” button. You will see from the diagram
how the gradient of CURVE changes.
Press the left-hand button three times to return to the main menu.
Change of value for CURVE
CURVE
C
40
18
C
0
5
-5
24
32
40
48
56
64
18
Supply line
temperature
Heat curve
Relation of outside
air temperature to
supply line temperature
Outside air temperature
CURVE
C
40
18
C
0
5
-5
24
32
40
48
56
64
18
