12
E
nglish
WARNING: before carrying out any work, make sure the
power supply is disconnected.
WARNING: electrical wiring, installation of the fan coils and
relevant accessories should be performed by a technician
who has the necessary technical and professional expertise to
install, modify, extend and maintain systems, and who is able
to check the systems for the purposes of safety and correct
operation.
In the specific case of electrical wirings, the following must
be checked:
- measurement of the electrical system insulation strength
- continuity test of the protection wires.
Instructions essential for the proper installation of the
equipment are shown here.
The completion of all the operations in accordance with the
specific requirements is, however, left to the experience of the
installation engineer.
The command device is made up of an electronic control
panel, to be flush-mounted in the wall in a standardised,
3-module rectangular box (type 503).
The control panel is fitted with two covering plates, a white
one and a black one.
Avoid installing the control panel in places directly exposed
to sun rays, draughts, heat sources and fan coil flow. Install
the unit at about 150 cm from the floor, on an internal, air-
conditioned wall.
Connect the wires to the control board as indicated in the
wiring diagrams.
Use wires with a maximum length of 6 metres.
INSTALLATION
106
71
L1
~
HIGH
MED
LOW
HEA
T
COOL
L2 - 0
C650 FS - 1C - 1H
EXT. SENSORS
A
W
PROBE INSTALLATION (SWA ACCESSORY)
If the system configuration allows it, the FMT20AW panel can
be connected simultaneously to 2 SWA probes.
The probe connection cable measures 6 metres.
The probe is connected to the connectors (A) and (W) positio-
ned on the back of the control panel (see wiring diagrams).
WATER TEMPERATURE CONTROL
The SWA probe detects the temperature of the water in the
system if connected to the connector (W).
It must be positioned on the inlet pipe downstream from any
valve.
The SWA probe for water temperature control can only be used
on 2-pipe systems without electric resistance.
The maximum/minimum water temperature control is only
active with the thermostat ventilation
; the control will be
deactivated if continuous ventilation
is selected.
The control will also be deactivated if the
“ventilation only” functioning mode is selected.
This control allows to prevent the ventilation if
the system water temperature is not suitable for
the functioning mode.
The control is only activated at the moment
when functioning in heating or cooling mode is
requested by the thermostat.
The probe-holder and bands for fixing to the
water pipe are also supplied with the accessory
(see diagram).
AIR TEMPERATURE CONTROL
The SWA probe detects the temperature of the room air if
connected to the connector (A). The air temperature probe,
incorporated in the panel, is automatically disabled.
The SWA probe must be positioned in a point such that it can
correctly detect the
room temperature.
The vicinity to heat
sources, lights and
windows or the direct
exposure to the sun’s
rays and to currents of
air prevent the correct
detection of the room
temperature.
The SWA accessory
is also supplied with
band for fixing the
fancoil intake probe
(see diagram).
A I R
A I R
A I R
20mm
FCX / FCS
AIR
W
A
TER
