B
12
Manual model IndAC
c
Caution:
Screw the coupling plates to both sides of
the unit.
5
Position the third unit, if any, in the same
way.
2.5.4
Securing
1
Fasten a securing bracket
4
to the top-
most unit using one of the screw holes in
the unit.
2
Fasten the securing bracket to a wall or
other permanent structure.
c
Caution:
If you place more than 3 units on top of
each other:
apply a securing bracket to each
2
nd
or 3
rd
unit.
2.6
Connecting units to the
CH system
Only for units with water heating (type W)
2.6.1
General
The connections for the supply and return
pipes are indicated on the units using arrows.
Valves for venting
1
and draining
2
the heat
exchanger are located on the air intake side.
c
Caution:
Biddle recommends the inclusion of a valve
in each pipe.
c
Caution:
The fans are not resistant to high tempera-
tures. Where necessary, take measures to
limit the discharge air temperature.
