Nibe FIGHTER 410P, Installation And Maintenance Instructions Manual, Page: 17 / 36

Ventilation connection 15
For Home Owners
FIGHTER 410P
FIGHTER 410P is connected so that all ventilation air
except the kitchen fan passes the evaporator (62) in
the heat pump. The lowest ventilation flow according to
current standards is 0.35 l/s per m2 floor area. For
optimum heat pump performance the ventilation flow
should not be less than 110 m3/h. (31 l/s).
The heat pump's installation area should be ventilated
by at least 36 m3/h (10 l/s).
FIGHTER 410P is equipped with an internal ventilation
opening (84). As a result, an air flow of about 5 m3/h
(1.4 l/s) is taken directly at floor level from the room
where the heat pump is installed.
Changing the ventilation capacity is described under
Electrical connection - Setting the fan capacity. See
also the Circuit diagram. The numbering of the curves
refers to the positions on terminal block (22). The choice of position and with that the fan speed is
made according to the following criteria:
■
The supply air flow should be 80 % of the exhaust air
flow to avoid overpressure in the house.
■
In position B (normal position) the planned exhaust
air respective supply air flow should be obtained in
the house. Fine adjustment is made using the termi-
nals in the different rooms. After which the position of
the terminal should not be changed.
■
In position A (reduced position) a low exhaust air
respective supply air flow should be obtained. How
low is determined in each specific case. NOTE! The
exhaust air flow must never drop below 110 m3/h (31
l/s). Otherwise the heat pump's function may be jeop-
ardized. Tip: Select a position so that the exhaust air
flow is as close to 110 m3/h as possible without falling
below this value.
■
In position C (forced position) a high exhaust air flow
respective supply air flow should be obtained. How
high is determined in each specific case. Tip: Select
as high a position as possible without the sound level
from the terminal in the house becoming trouble-
some.
The diagram below show the available ventilation
capacity.
Fan diagram
Ventilation flow
0
50
100
150
200
250
300
350
400
0 100 200 300 400
FIGHTER 410P tillgängligt tryck, tilluft
10-stegs transformator 040816
0
50
100
150
200
250
300
350
400
0 100 200 300 400
1
2
3
4
5
6
7
8
9 10
FIGHTER 410P tillgängligt tryck, frånluft
10-stegs transformator 040816
1
2
3
4
5
6
7 8
910
0 25 50 75 100
0 25 50 75 100
0
50
100
150
200
250
300
350
400
0 100 200 300 400
FIGHTER 410P tillgängligt tryck, tilluft
10-stegs transformator 040816
0
50
100
150
200
250
300
350
400
0 100 200 300 400
1 2
3
4
5
6
7
8
9 10
FIGHTER 410P tillgängligt tryck, frånluft
10-stegs transformator 040816
1
2
3
4
5
6
7 8
910
0 25 50 75 100
0 25 50 75 100
A
vailab
le pressure
, P
a
A
vailab
le pressure
, P
a
Air flow
m 3 /h
l/s
Air flow
m
3
/h
l/s
Exhaust air fan
Supply air fan