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Before carrying out any maintenance, cleaning or checking oper-
ations:
Turn off the burner's electrical supply using the
main system switch.
DANGER
Turn off the fuel interception tap.
DANGER
Avoid condensate, ice and water leaks from form-
ing.
DANGER
If the cover is still present, remove it and proceed with the electri-
cal wiring according to the wiring diagrams.
Use flexible cables in compliance with the EN 60 335-1 standard.
5.15.2 Supply cables and external connections
passage
All the cables to be connected to the burner should be passed
through cable grommets, as shown in Fig. 32.
To guarantee the protection level of the burner, it
is necessary to close any holes and fairleads not
used using the plugs supplied.
WARNING
5.16
Motor rotation
As the burner is not fitted with a phase sequence checking de-
vice, the motor rotation may be incorrect.
As soon as the burner starts up, go in front of the
fan motor cooling fan and check it is rotating anti-
clockwise (Fig. 33).
WARNING
If this is not the case:
turn the burner switch to position "0" (OFF) and wait for the
control box to carry out the switch-off phase;
disconnect the power supply to the main panel;
invert the phases on the three-phase power supply.
This operation must be carried out with the electri-
cal supply disconnected.
DANGER
20099672
Installation
1
3
6
5
20062902
Key (Fig. 32)
1
Electrical supply
2
Minimum gas pressure switch
3
Pressure switch for VPS gas valve leak detection
4
Gas train
5
Consents/Safety
6
Available
7
Plug
After carrying out maintenance, cleaning or
checking operations, reassemble the cover and
all the safety and protection devices of the burner.
28
GB
5
7
2
7
7
4
7
20079199
5
6
6
7
Fig. 32
Fig. 33
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