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4.13.1 Supply cables and external connections
passage
All the cables to be connected to the burner are fed through the
grommets. See figure on the right.
The use of the cable grommets can take various forms.
By way of example we indicate the following mode (according to
UL795):
1 Three phase power supply with 3/4 inch cable grommet
2 Available: single phase power supply and other devices with
1/2 inch cable grommet
3 Available: consents/safety, minimum gas pressure switch, gas
valves and other devices with 3/8 inch cable grommet
4 Available: hole for M16
5 Available for ground terminals
A Fan motor
B Maximum gas pressure switch
C Flame sensor
D Air servomotor
E Fuel servomotor
F Air pressure switch
G Oil valve
H Oil pressure switch
I
Pump motor
The control panel is in compliance with UL508A.
WARNING
After carrying out maintenance, cleaning or check-
ing operations, reassemble the hood and all the
safety and protection devices of the burner.
20095074
Installation
5
3
C
3
B
5
1
2
A
28
GB
D
3
F
4
20099747
5
5
G
E
G
H
I
5
3
Fig. 30
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