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Ū BN (L2): Brown = phase filter IN
Ū BU (N4): Blue = filter IN neutral
Ū BK (U1): Black = filter OUT phase
Ū BU (U3): Blue = filter OUT neutral
Ū VC: ON/OFF cold/hot water valve 2 pipes system (accessory)
Ū ON/OFF cold water valve 4 pipes system (accessory)
Ū VH: hot water valve 4 pipes system (accessory)
Ū BN: Brown = valves power supply phase
Ū BU: Blue = neutral valve power supply
Ū SAI: Pre-installed internal air temperature probe
Ū SAE: Remote air temperature probe (accessory)
Ū SW: Remote air temperature probe (accessory)
Ū SWH: Hot water temperature probe additional coil (4-pipe units).
Available in option only with SW.
Ū SUI: Pre-installed internal air relative humidity probe
Ū SUE: Remote air relative humidity probe (accessory)
Ū SC: Relay box + Electrical heating element terminal box
Ū RE: Electrical heating elements
Ū TSA: Safety thermostat
Ū TSM: Safety thermofuse
Ū K: Relay control thermostat
Ū K1: Relay control thermofuse
FWECSA control electrical wiring diagram legend
Ū T1: Transformer 230Vac/24Vac (not supplied)
Ū VC 0-10: modulating cold water 2 pipes system (accessory)
Ū Modulating cold water 4 pipes system (accessory)
Ū VH 0-10: Hot water valve modulating 0/10V 4 pipes system (acces-
sory)
Ū RD: Red = + 24V valves power supply
Ū BK: Black = 0V valve power suppliy / control signal GND
Ū grey: Grey = 0-10 Vdc valve control signal for modulating
4.2
MOUNTING BASE UNIT AND COVER CABINET
Upon receipt of the unit, check the integrity of the package:
Ū Remove the air filter unscrew the 2 fastening screws 11.11 p. 68
for FWZ. For FWR remove filter unscrew the 2 screws on frontal grill
11.10 p. 68.
Ū Remove the cabinet by unscrewing the 4 fastening screws reachable
through the lifted side doors on the upper grill. 11.5 p. 66.
Ū Remove the protecting spacers (useful for transport only) from the
cabinet sides.
Ū Install the unit at distances from the walls shown in dimensional
drawing from figure p. 63.
Ū Leave the cabinet inside the packaging and proceed with the instal-
lation of the base unit to the wall using the 4 slots provided and the
screw anchors suitable for the characteristics of the supporting wall,
keeping the bottom edge at least 100 mm above the floor to ensure
a correct intake of air and facilitate the filter removal for versions
FWZ / FWS.
Ū For the ceiling installation FWZ / FWS make sure that the
5
CHECKS BEFORE STARTUP
Ū Check that the unit is levelled as need and that the drainage outlet
is not clogged (by masonry debris, etc.)
Ū Check that the unit is installed in such a way as to guarantee the
proper air flow.
Ū Check the tightness of the plumbing connections (to the exchanger
and condensate drainage line).
6
USE
To use the fan coil refer to the instructions on the on board or remote
control panel.
installation height doesn't exceed the maximum indicated in figure
11.8 p. 67, to avoid an excessive hot air stratification in the upper
part of the room.
C
IN
case of greater installation heights we suggest to proceed with
the back suction from the lower part of the room.
The installation heights shown in the figure refer to the maximum run-
ning speed.
WARNING:
A
recess-mounted models FWS devices mustn't be acces-
sible to the public.
The air outlets should not be placed immediately under a socket. For
the flush-mounted model FWS perform the connection between the fan
coil and the ducts, and place damping material between the duct and
the unit.
All ducts, especially the outlet ducts, must be insulated. To avoid risks of
air recirculation on fan coil, keep a minimum distance between air inlet
and air recycle, as shown in figure 11.9 p. 67.
Minimum installation height must not be less than 1,8 mt than the
ground.
to provide accessibility to unit.
Heat exchanger rotation
The exchanger connections can be switched over to the opposite side by
carrying out the following steps 11.6 p. 66:
1. remove the unit's front panel (4 screws), or the main drip tray for the
models with ceiling installation;
2. remove the heat-exchanger cover (1) (2 screws);
3. remove the heat exchanger mounted on the base unit side panels,
unscrew slightly the 4 screws (2) on the back of heat exchanger;
4. disconnect the motor cables from the terminal board
5. remove the terminal board and mount it on the opposite side panel;
6. remove the rubber snap bushing;
7. remove the drain pipe and place it on the opposite side;
8. set the drop breaker pipe in the place of the closing cap of the drip
tray;
9. turn the heat exchanger by 180° on vertical plane and aligning the
shoulders of the battery with the mounting holes through which it
was previously placed in place;
10. insert it on the side panel removing the pre-cut slots;
11. reposition the heat-exchanger cover on heat exchanger on the bot-
tom part;
12. fix the back of heat exchanger on base unit with screws;
13. insert the rubber snap bushing into the hole previously used for the
drain pipe, reassemble the cable fastener on the side panel and in-
sert the cables;
14. restore the electrical connections, refer to the electrical diagrams
from: p. 70;
15. reassemble the unit's front panel (4 screws), or the main drip tray for
the models for ceiling installation;
16. close the manifold through-holes, no longer used, with drip proof
material.
Ū Make sure the electric wires are tightly connected (carry out this
check with the power supply OFF).
Ū Make sure that air has been eliminated from the heat exchanger.
Ū Reapply the cabinet and filter
Ū Power the fan coil and check its performance
Air outlet grills can be swivelled 180° to direct the flow into the room or
towards the wall on which the unit is mounted. (FWZ / FWR)
19
FC66006893-01
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