REASSEMBLY (CONT) - TM-3-4230-209-20-P0244

2-212

TM 3-4230-209-20&P

2-40. LOW PRESSURE HEATING BOILER ASSEMBLY (CONT).

LOCATION/lTEM

ACTION

REMARKS

Low Pressure Heating Boiler

Assembly/

Pressure switch (6)

Screw pressure switch (6) in side of combustor so electrical wires

enter through the bottom. Connect electrical wiring. Reinstall cover

panel if necessary.

Gas spark igniter (7)

Screw gas spark igniter (7) into nozzle holder assembly (8) and

Nozzle holder assembly (8)

combustor plate (9) unit. If unit was removed, slide it into position in the

Combustor plate (9)

combustor.

Ignition cable assembly (10)

Connect ignition cable assembly (10) to gas

spark igniter (7) and tighten connector.

Nozzle valve line (11)

Insert nozzle valve line (11) and combustion

Combustion return line (12)

return line (12) through nonmetallic

Nonmetallic grommet (13)

grommets (13 and 14) and connect to the

Nonmetallic grommet (14)

combustor plate.

WARNING

When handling asbestos material,

always wear an air filtering respirator,

gloves, and goggles. Wash face and

hands with soap and water before eat-

ing or smoking. Asbestos can cause

cancer if handled without protection.

Gasket (15)

Position gasket (15) and cover plate (16) on

Cover plate (16)

combustor opening and install eight hexagon

Hexagon cap screws (17)

cap screws (17).

Internal tooth lock

Install eight internal tooth lock washers (18)

washers (18)

and hexagon plain nuts (19), and secure.

Hexagon plain nuts (19)