28 | Installation instructions
Fig. 45 Power cable connections
7.3 Position of the fuses in control unit
To check fuses, proceed as follows;
▶ Remove the front cover, see Fig. 23.
▶ Remove the three screws from the control unit (Fig. 46 e
Fig. 47, ).
▶ Remove the six screws from the back cover of the control
unit, see Fig. 47, .
6 720 680 174 (2014/05)
▶ Check the fuses in the printed circuit board, see Fig. 47,
Fig. 47 Fuses position
▶ After checking the fuses, reinstall all parts in reverse order
8.1 Factory regulations
Heaters designed for Natural gas H (G 20) are factory sealed for
delivery after the values on the characteristics panel have been
Butane heaters (G30) are factory sealed for delivery after the
values on the characteristics panel have been checked.
(Fig. 47, ).
Sealed parts must not be interfered with.
Heaters should not be ignited when the
connections pressure is less than 1,5 kPa
more than 2,5 kPa.