Gebwell Qi Series Installation, Operation And Maintenance Manual page 34

Protection operation automatically prevents the room
temperature from dropping too low. The temperature is at
the level defined by the frost protection set point.
Heating curve slope
The heating curve is used to calculate the set point for
the supply water temperature, which is used to adjust
the temperature according to the current weather
conditions. The heating curve can be changed with a
variety of settings so as to match the heating power and
room temperature to specific individual needs.
Menu: Expert → Parameter list
Heating circuit 1 → 2/13 → 720
Heating circuit 2 → 2/13 → 1020
Factory setting: 0,5
The greater the slope of the heating curve, the more the
supply water temperature changes as the outdoor
temperature drops. In other words, if the room
temperature is incorrect at low outdoor temperatures, but
correct at higher temperatures, the inclination must be
changed.
Increasing the setting:
Increases the supply water temperature particularly at
low outdoor temperatures.
Reducing the setting:
Reduces the supply water temperature particularly at
high outdoor temperatures.
The heating curve setting is based on a room temperature
of 20°C. If the room temperature set point is changed, the
heating curve is changed automatically according to the
new value. The factory setting for the heating curve is 0.5
(underfloor heating).
4
°C
100
90
80
70
60
50
40
30
20 10 0
End user can make small adjustments on the curve during
the first heating season. This is instructed in the user
interface quick guide.
Summer/winter heating limit
The summer/winter heating limit activates or deactivates
the heating according to annual temperature differences.
In automatic operation, this switch is performed
34
3,5 3 2,75 2,5 2,25
2
0,75
0,5
0,25
-10 -20
-30 °C
automatically without the user having the turn the heating
on or off. The annual periods can be shortened or
lengthened by changing the set values.
Increase:
Reduction:
NOTE! In case there are heating areas that one wishes
not to deactivate during summers (damp spaces), the
heating limit of that particular circuit is to be set not in
use (---).
Summer/winter heating limit follows the "damped
outdoor temperature". Damped outdoor temperature is
average temperature of 15 hours
Menu: Expert → Parameter list
Heating circuit 1 → 3/13 → 730
Heating circuit 2 → 3/13 → 1030
Setting the supply water temperature limits
This setting defines the limit values for the supply water
temperature set point range. If the supply water
temperature set point requested by the heating circuit
reaches the corresponding limit value, the set point
remains at the maximum or minimum limit as the heat
demand increases or decreases.
If the building features underfloor heating, it is important
to set the maximum and minimum temperatures for the
output line. If the building has underfloor heating and a
parquet floor, the supply water temperature must not
exceed the floor manufacturer's recommendations.
Menu: Expert→ Parameter list
Heating circuit 1 → 4/13 → 740 (min), 741 (max)
Heating circuit 2 → 4/13 → 1040 / 1041
1,75
Heating system, supply water minimum temperature:
1,5
Adjustment range: 8-45°C
1,25
Factory setting: 12°C
1
Heating system, supply water maximum temperature
Adjustment range: 12-95°C
Factory setting: 45°C
Separate minimum and maximum set points must be
determined for each heating circuit.
Winter operation begins earlier
Summer operation begins later
Winter operation begins later
Summer operation begins earlier
v3-8 23052017