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3 - INSTALLATION
3.22.4 - Connecting the
power supply cable
To connect the electrical power cable, proceed
as follows (refer to figures 6, 7, and 8):
use a three-core cable with double isolation
and a minimum cross section of 18 AWG (1.5
mm2);
open the heater cover panels following the
instructions given in chapter 3.28;
unscrew the three screws “B” from box “A”;
open the door “A” as shown in figure 7;
unscrew screws “C” + “D” on cable clamp and
pass the cable inside;
To connect the cables, use a screwdriver to
push down on the levers of the terminal block
as shown in figure 8.
CAUTION!!! if the “L1” live conductor
is inverted with the “N” neutral
conductor, the heater will go into
the lock-out condition.
CAUTION!!! if the ground system is
not efficient the heater will go into
the lock-out condition.
Figure 6 - Opening the electrical
connection box
Figure 7 - Opening the
junction box
Figure 8 - Connecting the power supply
