Nibe FIGHTER 640P, Installation And Maintenance Instructions Manual, Page: 26 / 40

24 FIGHTER 640P
For the Installer
Setting the automatic heating control system
Setting with diagrams
FIGHTER 640P is equipped with outdoor temperature con-
trolled automatic devices. This means the flow temperature
is regulated in relation to the current outdoor temperature.
The relationship between outdoor temperature and flow
temperature is set with the “Heating curve selection” and
“Heating curve offset” knobs.
The diagram is based on the dimensioned outdoor temper-
ature in the area and the dimensioned flow temperature of
the heating system. When these two values “meet”, the
heating control's curve coefficient can be read.
Set the “Heating curve offset” accordingly. A suitable value
for underfloor heating is -1 and for radiator systems -2.
To read the calculated flow temperature, go to channel
selection 10.
Also see the section “Room temperature”.
Setting the automatic heating con-
trol system
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
- 40
°
C
UTETEMPERATUR
- 10 0 10
- 5
+ 5
30
40
50
60
70
°
C
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (-2)
VÄRMEKURVA
30
40
50
60
70
°
C
FRAMLEDNINGSTEMPERATUR
- 40
°
C
UTETEMPERATUR
- 10 0 10 - 20 - 30
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
1514 13 12 11 10
8
7
6
5
4
3
2
1
- 40
°
C
UTETEMPERATUR
- 10 0 10
- 5
+ 5
30
40
50
60
70
°
C
FRAMLEDNINGSTEMPERATUR
- 20 - 30
FÖRSKJUTNING
VÄRMEKURVA (+2)
9
VÄRMEKURVA
VÄRMEKURVA
- 5
+ 5
FÖRSKJUTNING
VÄRMEKURVA (0)
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
- 40
°
C
OUTSIDE TEMPERATURE
- 10 0 10
- 5
+ 5
30
40
50
60
70
° C
FLOW TEMPERATURE
- 20 - 30
HEATING
CURVE OFFSET (-2)
HEATING CURVE
30
40
50
60
70
° C
FLOW TEMPERATURE
- 40
°
C
OUTSIDE TEMPERATURE
- 10 0 10 - 20 - 30
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
1514 13 12 11 10
8
7
6
5
4
3
2
1
- 40
°
C
OUTSIDE TEMPERATURE
- 10 0 10
- 5
+ 5
30
40
50
60
70
° C
FLOW TEMPERATURE
- 20 - 30
HEATING
CURVE OFFSET (+2)
9
HEATING CURVE
HEATING CURVE
- 5
+ 5
HEATING
CURVE OFFSET (0)
HEATING CURVE
HEATING CURVE OFFSET
FLOW TEMPERA
TURE
OUTDOOR TEMPERATURE
HEATING CURVE
HEATING CURVE OFFSET
OUTDOOR TEMPERATURE
FLOW TEMPERA
TURE
HEATING CURVE
HEATING CURVE OFFSET
OUTDOOR TEMPERATURE
FLOW TEMPERA
TURE
Diagram with offset - 2
Diagram with 2
Diagram with offset 0