Lennox OF20, 020, OSR20 User Manual

OIL KITS AND ACCESSORIES u,e._,o

Technical

Litho U.S.A.

@1993Lennox Industries Inc.

Dallas, Texas 40732H093

503,004M

9/93

INSTALLATION INSTRUCTIONS FOR HEAT EXCHANGER

CLEAN-OUT KIT (54J98) USED ON ALL 020 SERIES UNITS.

1- Clean-out brush
1- Length of vinyl tubing

This kit is may be used to clean the heat exchanger on

any 020, OSR20 or OF20 series oil furnace.

1- Turn off electrical power and oil supply to the

furnace.

2- Remove flue pipe section connecting furnace to

chimney. Clean as necessary with clean-out
brush and vacuum.

3- If the furnace is equipped with a flue box, remove

the flue box cover by removing two screws.

Carefully clean the flue box cover.

4- Adapt the enclosed vinyl tubing so that it may be

connected to a vacuum. It is used as an
attach ment.

5- Use the vacuum to clean around the flue exit of

the heat exchanger.

6- Remove six sheet metal screws securing the

framing of the flue collector box or flue collar to
the heat exchanger. Remove framing or collar.

NOTE - For rear-flue models, remove square
clean-out access panel on unit vestibule panel by
removing six screws. Clean-out plate will now be
exposed. Remove eight nuts and washers that secure
the clean-out plate to the heat exchanger. Carefully

remove clean-out plate and gasket from heat
exchanger. If gasket is damaged it must be replaced.

The heat exchanger passageways are now accessible

for cleaning.

7- Replace the six screw previously removed. This

will seal the heat exchanger to the vest panel and
will not allow soot to fall into the furnace cabinet

during the rest of the clean-out procedure.

020 SERIES HEAT EXCHANGER

CLEAN-OUT KIT

8- Continue cleaning the heat exchanger through

the flue exit with the kit supplied brush. Work the
brush through one side of the radiator and then

through the other. Repeat this step so that the
entire radiator surface is covered.

9- Remove clean-out brush and use your vacuum

with vinyl hose attachment to sweep out the
radiator. Work hose through one side of the

radiator, then the other. Repeat the previous two
steps until all soot and debris are removed from

radiator.

10-The crossover section of the heat exchanger

between the inner drum and radiator should be
cleaned next. Open the inspection door on the
unit and position the clean-out brush in a slightly
upward position. The brush end should enter the

crossover section. Clean this area thoroughly.

NOTE - For rear flue models, the heat exchanger
crossover is exposed for easy cleaning when
clean-out plate is removed.

11-Inspect the combustion chamber for soot by

disconnecting oil line then remove burner. DO
NOT USE BRUSH INSIDE COMBUSTION

CHAMBER! Carefully vacuum soot from the
chamber. Once the furnace is put back into

operation, the heat from the flame should burn
the rest of the soot from the combustion chamber.

12- Replace oil burner and connect oil line.

13- Replace flue collector framing or collar and install

flue connector cover using the six screws
previously removed.

NOTE - For rear-flue models, replace gasket,
clean-out cover plate (using the eight nuts and

washers) and clean-out access panel (using the six
screws).

14-Replace flue pipe section connecting furnace to

chimney, seal all joints with approved sealant
materials for the application.

15-Turn on power and oil supply.

16-Refer to unit installation instructions for proper

furnace operation and performance.

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