HDEE / HDEEM
16
14.3
Power cable dimensions
The size of the power cables should correspond to the type and calibre of the fuse, which should be
chosen according to the boiler’s nominal current. The installation must comply with applicable
legislation in all cases.
The permissible current for the electric cabling depends on the room temperature, the diameter,
length and insulation of the conductors, the type of conduit and the conduit fitting and
environment. The table below shows the approximate values for a room temperature of 30 ºC and a
maximum length of 5 metres. The installation must comply with applicable legislation in all cases.
Nominal section (mm)
Nominal circuit breaker current (A)
1.5 16
2.5 25
4 32
6 40
10 63
16 80
14.4
Changing the voltage
If the main supply voltage is different from the voltage the boiler is designed for, the boiler must be
adapted to the new voltage. To do this,
before connecting the boiler to the main supply
, change
the position of the terminal strip bridges as shown in the figures below (
models HDEE-HDEEM
45/90 and HDEE-HDEEM 10/15 only
).
To remove a bridge, loosen the screws holding it in place and then pull it out of its housing. Repeat
the above procedure in reverse order to replace it.
When the bridges are correctly positioned, connect the electrical supply to the boiler as shown in
the corresponding figure. Remember to make an earth connection.
O
1
L
1
L
2
L
3
N
L
1
L
2
L
3
400 V 3N~
O
1
L
1
L
2
L
3
L
2
L
1
L
3
230 V
3
O
1
L
1
L
2
L
3
N
L
230 V~
14.5
Changing the boiler power
HDEE-HDEEM 45/90
and
HDEE-HDEEM 10/15
boilers allow the maximum boiler heating power to
be altered to suit your requirements. To do this, simply remove some of the heat exchanger
element bridges as shown in the table below.
Total power according to
model (kW)
45/90
10/15
Bridges
9
15
Leave in place
7.5 12.5 Remove
A
6 10
Remove
A and B
4.5 -
Remove
A, B and C
