HWD
7
English 07/13
POWER CONNECTIONS
HWD
hydronic terminals leave the factory completely
wired and ready for connection to the mains electricity
supply, the auxiliary devices, the accessories and the receiv-
er. The receiver must be connected using shielded cable to
avoid radio interference that could lead to malfunction. All
electrical connections must be carried out by qualified per-
sonnel. For all electrical work, refer to the electrical wiring
diagrams in this manual.
You are also recommended to check that:
the characteristics of the mains electricity supply are ade-
quate for the absorptions indicated in the electrical charac-
teristics table below, also bearing in mind the possible use
of other equipment at the same time.
Power to the unit
must be turned on only after
installation work (mechanical, refrigerant and elec-
trical) has been completed.
All electrical connections
must be carried out
by qualified personnel in accordance with legislation
in force in the country concerned.
Respect instructions
for connecting phase, neu-
tral and earth conductors.
The power line
should be fitted upstream with a
suitable device to protect against short-circuits and
leakage to earth, isolating the installation from other
equipment. This protection device should also act as
a main switch and, if not visible from the electrical
switchboard of the unit, should be lockable.
Voltage must be
within a tolerance of ±10 of the
rated power supply voltage for the unit. If this is not
the case, contact the electricity supply company.
For electrical connections
, use double insulation
cable in conformity with current legislation in the
country concerned.
An efficient earth connection is obligatory.
Failure to earth the appliance absolves the manufac-
turer of all liability for damage.
Do not use water pipes to earth the unit.
A
I
ELECTRICAL ABSORPTIONS
WATER TANK
4
2
3
1
T
1
Fan
2
Main coil
3
Auxiliary coil
4
Humidifier
HYDRAULIC CIRCUIT
For correct operation of the unit, the BT1 room sensor
must be positioned directly in the inflow of air (BT1 sen-
sor cable length: 3m).
Warnings:
if the humidifier module is present, the overflow
pipe and seasonal drain valve should be connected, as de-
scribed in the paragraph “connecting the condensate drain
pipe”. For the diameter of the connections.
602 - 703
230~50
0,30
1,30
0,37
1,7
803 - 904
230~50
0,35
1,55
0,44
1,7
1003
230~50
0,52
2,30
0,90
3,3
1104
230~50
0,60
2,60
0,90
3,3
(V-Ph-Hz)
F.L.I.
F.L.A.
F.L.I.
F.L.A.
(kW)
(A)
(kW)
(A)
Size
Electrical power supply
Rated values (1)
Max. values (2)
F.L.I.
Absorbed power
F.L.A.
Absorbed current
L.R.A. Compressor start-up current
(1)
Outside air temperature 35°C - Room temperature 27°C, R.H.,
values refer to the lower rated voltage (50Hz).
(2)
These values should be used to dimension protection switches and power cables.
