55
TECHNICAL ASSISTANCE SERVICE
ENGLISH
2
1
3
6
5
4
1
REMOVING THE BURNER CONTROL BOX
Proceed as follows to remove the burner control box:
- Unscrew the screws (1) and remove the cover (6) from
the coil (4).
- Remove the coil (4) and disconnect its connectors.
- Unscrew the screws (2), open the cover (3) and remove
all the components inside.
- Unscrew the two screws (5), pull the control box gently
away and disconnect the cables from the ignition elec-
trodes.
The burner must be shut down and power and fuel
disconnected before the control box is removed .
BURNER ELECTRICAL CONNECTIONS
L1
N T1 T2 S3 B4
1 2
L1
N T1 T2 S3 B4
RESET
MO535-MRSFUI
Burner
ground
CONTROL BOX
Capacitor
Motor
Heating element
Startup thermostat
Black
White
Blue
Flame
detector
Burner lockout indicator
(on boiler control panel)
7 pin connector
2 pin connector
Fuel
shut-off
cock
Remote burner reset button
(on boiler control panel)
Ignition
electrodes
