Technical data

ELECTRICAL INSTALLATION TECHNICIAN
Ed.06/2011 33
SECTION 4: ELECTRICAL INSTALLATION TECHNICIAN
In this section you can find all the necessary instructions to make the electrical
connections for the F2 C Series gas fired unit heaters.
4.1 HOW TO CONNECT THE HEATER TO THE POWER SUPPLY
To Have: the heater installed.
The electrical connections must be made by qualified personnel. Before
performing this operation, cut off the electrical supply.
1 - Check that the supply voltage is 400V / 50Hz. 3 phase plus N.
2 - Make the electrical connections according to the installation wiring diagram (see
Figure 22 at page 36) by using a FG7 5x1,5 mm
2
type cable with maximum outer
diameter of 14 mm.
3 - Make the electrical connection by paying attention that the ground cable is longer
than the energised cables. The ground cable will be the last to be broken if the
power cord is accidentally stretched and therefore a good ground continuity is
ensured.
!
The appliance is electrically safe when it is properly grounded in compliance with the
existing security regulations. Do not use gas pipes as earth for electrical appliances.
4 - The heater must be connected to the power supply line by a 4- pole switch 4x10 A