B
12
Manual model PS
2.7 Connecting the valve
motor
Accessory with air valve module (PS L)
The air valve module is available with a pre-
mounted valve motor. If the module does not
yet have a valve motor, you must mount it
first.
1 Both the valve motor and the base mod-
ule have a cable with a connector. Con-
nect these.
2 You may want to set a stop to the valve
motor.
This allows you to open the air valve par-
tially, so the unit will ventilate and recir-
culate at the same time.
2.8 Connecting ducts
Only with plenum PS P or duct
connections PS TH and PS TV
The plenum module PS
P (illustrated) allows
the modular fan coil unit to be connected, via
circular ∅ 200 mm ducts, to a discharge or
intake opening.
Mounting the ducts depends on the local
situation, and is to be carried out according
to your own judgment. However, follow the
below instructions in order not to affect the
unit’s performance:
- Avoid any abrupt duct transitions.
- Keep ducts as short as possible.
- Mount flexible connection sleeves to the
intake opening under slight tension (this
is to prevent the connection sleeve from
being sucked to a close at high fan
speeds).
- Provide for proper sealing at transitions
in the duct system.
2.9 Connecting the unit to the
CH and/or CW system
Only for units with water heating and/or cool-
ing
2.9.1 Water connections
Depending on the type, the connections have
female-thread fittings or compression fittings.
The heat exchanger may come with pre-
mounted control valves. If so, the CH and/or
CW pipes are to be connected to them.
The connections are marked with arrows that
indicate either supply or return: with heating,
the arrows are red; with cooling, blue.
Connection through rectan-gular ducts is
possible with the duct connections
PS TH
and PS TV, using flexible connection sleeves
(not illustrated).
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