Lennox BAC020SNM, Installation, Operating And Maintenance

Page: 84 / 137

HEATING: GAS BURNER
BALTIC R410A-IOM-0708-E Page 83
DISASSEMBLING THE GAS BURNER FOR
MAINTENANCE PURPOSES
Preliminary Safety Recommendations

Isolate the unit using the main isolator switch.

Close off the isolating gas valve located before the unit.

Disconnect the Pipe-work. Do not discard the seals.
Disassembling the gas
«
burner support bar
»

Disconnect the Electrical Connector on the electric
connection board EF47

Remove the two screws which hold the gas Bar in Place

Carefully remove the gas « burner support bar » avoiding
any damages to the electrodes.
Disassembling the flue

Electrically disconnect the fan and remove the screws
holding it in place.

Take care not to loose any cage nuts in the smoke box.
ATTENTION: Check the correct position of the pressure tube
used by the extraction pressure switch.
Required Equipment List for maintenance Adjustment
and Start-up

An accurate manometer from 0 to 3500 Pa (0 to 350 mbar):
0.1% full scale.

A Multimeter with Ohmmeter and Micro-amps scale

An Adjustable Spanner

Tube Spanner Set: 8, 9, 10, and 13.

Flat Screwdrivers diameter 3 and 4, Fillips n°1

Vacuum cleaner

Paint brush
GAS BURNER SUPPORT BAR
Fig. 61
Fig. 62
Fig. 63
Fig. 65
Fig. 66
Fig. 64