40
ELECTRICAL CONNECTIONS
The fan heater leaves the factory fully wired and need only:
be connected to the mains;
be connected to a control device (where applicable).
WARNINGS:
Install upstream of the unit a differential magneto thermal circuit breaker suitably sized according to
the regulations in force.
Always connect the earthing system, taking care to leave the earth wire slightly longer that the
other wires, so that, in case of accidental pulling, the latter is the last one to be removed.
Get qualified personnel to check that the section of the cables and the electrical system are suitable
for the maximum power absorbed by the unit indicated on the information plate.
Respect polarity in the connection of the power supply (phase - neutral).
The unit must be connected to an efficient earthing system. The manufacturer shall not be held
responsible for any damage caused by failure to earth the appliance.
The electrical cables must be positioned so as not to come into contact with hot and/or cold
surfaces, or with sharp edges.
In accordance with the Standards regarding the installation of electrical components, a device that
ensures disconnection from the mains with an opening distance between contacts that guarantees
complete disconnection in overvoltage conditions III (Standard EN 60335-1) must be included.
Water or gas pipes should not be used as earth connection of the machine.
It is compulsory to use systems that, in the event of a fan heater breakdown, isolate the faulty unit
only without compromising the routine operation of any other units making up the overall system.
In the types with two electric fans (15
18) to activate it is possible to feed the two assemblies
separately
Wire sizing table:
Type
Voltage
Power supply
(V ph Hz)
Max power
absorbed
(W)
Max current
absorbed
(A)
Fuse of
Line (1)
(A)
Section of
conductors
of Line (2)
(mm2)
Section
of earth
cable (2)
(mm2)
1 – 2
230V
50Hz
74
0.34
1
1.5
1.5
3 – 4
230V
50Hz
86
0.38
1
1.5
1.5
5 – 6
230V
50Hz
120
0.55
1
1.5
1.5
7 – 8
230V
50Hz
130
0.60
1
1.5
1.5
9 – 10
230V
50Hz
200
0.90
2
1.5
1.5
11 – 12
230V
50Hz
220
0.95
2
1.5
1.5
13 – 14
400V 3N
50Hz
305
0.70
2
1.5
1.5
15 – 16
400V 3N
50Hz
240
0.56
2
1.5
1.5
17 – 18
400V 3N
50Hz
610
1.40
2
1.5
1.5
(1)
Not supplied
(2)
Wire cross-section ensures a voltage drop of less than 5% for a length of 30 m
WARNING!!!
In case of three phases electro fans connected to accessories (i.e. speed variator…), you
have to leave the “red bridges into the electrical box of the fan.
