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ELECTRICAL
CONNECTIONS
MAINTENANCE
10
ELECTRICAL CONNECTIONS / MAINTENANCE / CLEANING THE OUTSIDE
Make electrical connections according to the requirements set out in sections
General Warnings and Foundamental Safety Rules by reference to the patterns
present in the installation and accessories manuals.
Before doing any work, make sure the power is switched off.
The unit must be connected to the mains through a multipolar switch with
minimum contact opening of at least 3mm or with a device that allows the
complete disconnection from the device under the overvoltage conditions
category III.
The FCU must be connected to the mains (230VAC) according to the diagram
below.
Routine maintenance is indispensable to keep the FCU in perfect working
condition, safe and reliable over the years. This can be done every six months for
some interventions and annually for others, by the Technical Service Assistance,
technically authorised and prepared, using always original spare parts.
H2** Water temperature probe 10k
M1
DC inverter fan motor
S1
grill safety micro-switch
Y1
hot water solenoid valve (230V/ 50Hz 1A
output voltage)
L-N 230V/50Hz electrical power supply
BO
boiler demand output (free contact max 1A)
CH
chiller demand output (free contact max 1A)
AIR
Air temperature probe
**
If after switching the power on the board
detects the H2 probe, start-up occurs in
normal conditions with the minimum water
temperature when heating (30°C) and
maximum when cooling (20°C).
The board also has a function when there
is no probe, in such cases the fan stop
minimum and maximum thresholds are
ignored.
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