18
6.2.2. Adjusting fl ow rate with differential
pressure gauge
S&P recommends a slight underpressure in the house
e.g. less supply airfl ow then extract airfl ow.
20
21
20
1
2
M+P-26A-2061
1. Lose screws Torx 10 (20) (Arrow 1).
2. Remove cover (21) (Arrow 2).
NOTE
The fi rst step is always to set the airfl ow rate for ex-
tract air.
3. Set up power supply for the ventilation system.
4. Turn on fan speed V3 on the control panel, see page
30.
Pa
XXXX
1
29
46
27
A
4
0
M+P-26A-2065
5. Connect differential pressure gauge (29) to the di-
fferential pressure connecting piece 1 (46) and
take a reading of the differential pressure [Pa].
Pay attention to the correct connection of + and -
(+/+ and -/-).
6. Turn potentiometer (27) until the desired differential
pressure (= airfl ow rate) is displayed on the differen-
tial pressure gauge (29).
Take value from the following table.
Example:
1. The desired airfl ow rate (extract air) is 110 m³/h.
2. Look for the value 110 in the table.
3. Turn potentiometer (27) until 7.5 Pa is displayed on
the differential pressure gauge (29).
Nominal airfl ow
rate (extract air)
[m³/h]
Differential pressure connecting
piece 1/ potentiometer (27)
[Pa]
90
15-16
100
18-20
110
22-23
120
25-28
130
31-34
140
37-39
150
41-43
160
45-47
Summary of Contents for NEMBUS 210
Page 1: ...NEMBUS 210 EN...
Page 2: ......
