Setting The Cooling/Heating Curve - Nibe F1145 Installer Manual

Expansion vessel
If a pressure expansion vessel (CM3) is used
instead of a level vessel, the pressure level
is checked. If the pressure drops, the system
should be replenished.
Post adjusting the room
temperature
If the required room temperature is not obtained, read-
justment may be necessary.
Cold weather conditions
When the room temperature is too low, increase
■
"heating curve" in menu 1.9.1.1 by one increment.
When the room temperature is too high, reduce
■
"heating curve" in menu 1.9.1.1 by one increment.
Warm weather conditions
When the room temperature is too low, increase
■
"temperature" (offset heating curve) in menu 1.1.1 by
one increment.
When the room temperature is too high, reduce
■
"temperature" (offset heating curve) in menu 1.1.1 by
one increment.
Setting the cooling/heating
curve
heating curve 1.9.1.1
system
flow temperature °C
outdoor temp. °C
34 Chapter 6 | Commissioning and adjusting
cooling curve 1.9.1.2
system
flow temperature °C
outdoor temp. °C
heating curve
Setting range: 0 – 15
Default value: 9
cooling curve (accessory required)
Setting range: 0 – 9
Default value: 0
You can select heating or cooling in the
The next menu (heating curve/cooling curve) shows the
heating and cooling curves for your house. The task of
the curve is to give an even indoor temperature, regard-
less of the outdoor temperature, and thereby energy
efficient operation. It is from these heat curves that the
heat pump's control computer determines the temper-
ature of the water to the system, the supply temperature,
and therefore the indoor temperature. Select the curve
and read off how the supply temperature changes at
different outdoor temperatures here. The number to the
far right of "system" displays which system you have se-
lected the heating curve/cooling curve for.
Curve coefficient
The slopes of the heating /cooling curves indicate how
many degrees the supply temperature is to be in-
creased/reduced when the outdoor temperature
drops/increases. A steeper slope means a higher supply
temperature for heating or a lower supply temperature
for cooling at a certain outdoor temperature.
Supply temperature
°C
70
Brantare kurvlutning Steeper curve slope
60
50
40
30
10 0 - 10 - 20
Outdoor temperature
The optimum slope depends on the climate conditions
in your location, if the house has radiators or under floor
heating and how well insulated the house is.
The curve is set when the heating installation is installed,
but may need adjusting later. Normally, the curve will
not need further adjustment.
curve menu.
- 30 - 40°C
UTETEMPERATUR
NIBE F1145