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6.9 EXTERNAL AIR INTAKE AND AIR SUPPLY INTO ANOTHER ROOM
The UCS600 and UCS900 cassette fan coil is provided with three pre-arranged holes
having diam. 150 mm (point B) for the air supply into an adjacent room and with one pre-
arranged hole with diam. 100 mm for the external air intake (not available in the UCS/H
600 and UCS/HM 600 models). See point A – Fig. 25a and 25b.
Fig.25a-UCS600, UCS/M 600
Two collars are supplied as standard:
•
n. 1x98 mm diam. collar for the external air intake: the external air through this hole
goes into a cavity of the air inlet plenum (Enclosure. 1/A, point 4) and it blows out from
it through the slots on the four sides, mixing perfectly with the return air. This particu-
lar system avoids that the external air is directly conveyed to the air outlet grilles. It is
necessary to install a filter and/or a damper at the external air inlet in case of entering
air at low temperature. If an external air intake is connected, it is important to open the
passage on the plastic frame (Fig. 25a, 25b point A);
•
n. 1x148 mm diam. collar for the air supply: after breaking down the pre-arranged hole
on one of the three available sides and after removing the insulation material it is pos-
sible to fix this collar with four self tapping screws;
In case of air supply into an adjacent room it is necessary to proceed as follows:
- close the air outlet grills at the same side of the opening used;
- install an air grill on the wall or on the door between the two rooms treated with the
same cassette unit.
ALWAYS GROUND THE UNIT
A
Ø98
Fig.25b–UCS900
B
B
EN
1
2
3
4
5
6
Ø148
7
B
8
9
10
+
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