12
AW HT
GB 05/2009
MAINS POWER SUPPLY CONNECTIONS
I A
- Before connecting the unit to the power supply, make sure
that switch QF1 is open, suitably padlocked and marked.
- Remove the inspection panel by removing the ten screws.
- Use cable gland
A
for the main electrical power cable and
cable gland
B
for other external cables to be connected by
the installer.
- Identify the terminals used for electrical connections on the
layout drawing shown in this manual.
For the functional connection of the unit, bring the power
supply cable to the electrical panel inside the unit and con-
nect it to terminals U-N, respecting the (U) phase, (N) neu-
tral and (PE) earth in the case of single phase units
(230V~50Hz), or U-V-W phases, N neutral and PE earth in
three phase units (400V-3N~ 50 Hz).
- Replace the inspection panel.
- Check that all the covers removed to make the electrical
connections have been replaced before powering up the
unit.
- Position the main switch QF1 (outside the unit) in the “ON”
position.
- The message “Updating Data” is shown on the room unit
display.
- The room unit is ready for operation after a few seconds.
A
B
ELECTRICAL PANEL LAYOUT AW 0031-0041 HT
SINGLE-PHASE WITH PEAK LIMITER
A1 Electronic
controller
A4 Peak
limiter
C1
Compressor start capacitor
C2/C3
Fan start capacitor
FU1
Auxiliary circuit protection fuse ”L” 230VAC
FU2
Auxiliary circuit protection fuse ”N” 230VAC
KA2
Alarm relay (K10)
KA3
Electric heater control relay (K6)
KA4
Boiler control relay (K27)
KA5
High pressure switch relay
KA6
Steam injection valve bypass relay
KA7
Compressor control relay (K1)
KA8
Domestic hot water 3-way valve relay
QM1
Compressor thermal overload switch
QS1
Door lock disconnect switch
