19
UAB KOMFOVENT we reserve the right to make changes without prior notice
C6M2-19-03
Most units with a rotary heat exchanger also have a fifth branch (labelled E) to connect an additional exhaust duct (see
1.3. section). The air flow through this opening is delivered directly to the exhaust fan, bypassing the heat exchanger, there-
fore, you can connect ducts from the bathroom, toilet or kitchen without worrying that odours and bacteria will contaminate
the rotary heat exchanger or be passed on to the supplied air flow. However, air is extracted through an additional branch
without recuperation, thus reducing the efficiency of the heat exchanger. For this reason, we do not recommend using the
extra air extraction continuously. An additional exhaust duct should be fitted with air closing damper (motorized are recom-
mended) and should only be opened when additional extraction is required (e.g. when bathing). If the additional branch is
connected to the kitchen hood with an integrated closing damper, an additional damper is not needed.
2
5
4
3
6
1
WC
1
2
3
4
5
6
C6M controller board
Switch
Spring return actuator with end position
contacts (e.g. Belimo LF-230S)
Air closing damper
Additional extraction duct
Air handling unit
1
2
3
C6M controller board
Switch
Spring return damper actuator with end
position contacts (e.g. Belimo LF-230S)
1 2
1 2
S3 S2 S1
0 %
100 %
N
N
~230V
L
L
5 10
C6M
1
2
3
Fig. 9.
Example of mounting of an additional air extraction duct
•
Ducts connecting the unit to the exterior of the building must be insulated (insulation thickness
50–100 mm) to prevent condensation on cold surfaces.
•
Air intake and exhaust ducts must be fitted with air closing dampers (mechanical spring-loaded
or electric with actuators) to protect the unit from exposure to climatic conditions when the unit
is switched off.
•
In order to minimise AHU noise transferring through the ducts into ventilated areas, sound
attenuators must be connected to the unit.
•
Duct system elements must have separate brackets and to be mounted in a way that their weight
is not shifted to the unit casing.
•
The kitchen hood with integrated exhaust fan must not be connected to the additional air ex-
haust duct. Such hood must be connected to a duct separated from the general ventilation
system.
The diameter of the ducts varies by unit model:
Unit
D
om
ek
t R 2
50 F
D
om
ek
t R 4
00 V
D
om
ek
t R 4
50 V
D
om
ek
t R 3
00 V
D
om
ek
t R 4
00 H
D
om
ek
t R 4
00 F
D
om
ek
t R 6
00 H
D
om
ek
t R 5
00 H
D
om
ek
t R 5
00 V
D
om
ek
t R 7
00 H
D
om
ek
t R 7
00 V
D
om
ek
t R 7
00 F
D
om
ek
t C
F 1
50 F
D
om
ek
t C
F 2
00 V
D
om
ek
t C
F 2
50 F
D
om
ek
t C
F 3
00 V
D
om
ek
t C
F 4
00 V
D
om
ek
t C
F 5
00 F
D
om
ek
t C
F 7
00 V
D
om
ek
t C
F 7
00 F
D
om
ek
t C
F 7
00 H
D
uc
t diamet
er
,
mm
Duct A
160
160
160
200
250
250
160
200
250
Duct B
160
160
160
200
250
250
160
200
250
Duct C
160
160
160
200
250
250
160
200
250
Duct D
160
160
160
200
250
250
160
200
250
Duct E
125
100
–
125
125
125
–
–
–
Summary of Contents for Domekt CF 200 V
Page 1: ...DOMEKT Installation Manual EN C6M automation ...
Page 2: ......
