S&P CADB-HE ECOWATT Series Manual page 64

6.4.2.4.5. Pressure switch connection
All these range of heat recovery units have pressure tapping that allow the installation of diffe-
rencial pressure switches to perform the control of polluted fi lters. The position of the pressure
taps depends on the model:
Horizontal models
CADB/T-HE 04 to 21 LH, RH
(on the side of inlet conection
panel)
6.5. REVERSE SUPPLY AIR/ EXTRACT AIR SIDE (only -D version)
In models CADB-HE-D 04 to CADB-HE-D 21 it is possible to reverse the supply and extract air sides. To
carry on this modifi cation it is necessary to remove the by-pass chanel and mount it in opposite sense,
as indicated in the image heresequence below:
Fig. 1
Fig. 4
1. Disconnect the heat recovery unit.
2. Remove the side panel (fi g.1).
3. Extract carefully the bypass (fi g.2).
4. Disconnect the electrical connector that feeds the bypass.
5. Turn the bypass according to image (fi g.3 and 4).
6. Reconnect the electrical power connector of bypass.
7. Place the bypass in its housing again (fi g.5), close the panel and start up the unit.
Horizontal models
CADB/T-HE 40 to 54 LH, RH
(on superior part of the side
panel)
Fig. 2
Fig. 5
64
Vertical models
CADB/T-HE 40 to 54 LV, RV
(on superior part of the side
panel)
Fig. 3