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4.15.1 Supply cables and external connections
passage
All the cables to be connected to the burner are fed through the
grommets. See Fig. 25.
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 M20
5 Available for ground terminals
6 Available for inverter three phase power supply with 3/4 inch
cable grommet.
A
Variable speed sensor
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
L
Motor earth cable
5
B
C
A
5
L
1
20125138
2
6
The control panel is in compliance with UL508A.
WARNING
After carrying out maintenance, cleaning or check-
ing operations, reassemble the cover and all the
safety and protection devices of the burner.
F
5
Fig. 25
Installation
4.15.2 Cable shielding
It is very important to shield the motor cable 1) as
shown in Fig. 26.
It is very important to fix the cable shielding as
WARNING
shown in Fig. 26.
The connection from the Inverter to LMV36.... must be done as
shown in Fig. 26.
1
5
20125148
4
Key (Fig. 26)
G
1
Motor supply cable
2
Single phase supply cable
D
3
Clamp for connection of controls cable shielding from Inverter
E
H
I
5
3
33
GB
2
3
Fig. 26
20120900
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