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ROUTINE HEATER AND BURNER MAINTENANCE
Weekly Maintenance
A flame inspection mirror is useful for a routine check of the nozzle, ignition, and retention head
while the unit is operating.
1. Observe flame--adjust if needed.
2. Check all filters and water traps in the oil and air supply lines. Clean if needed.
3. Check barometric damper draft setting and be sure flap has freedom to move.
4. Inspect chimney integrity at elbows, tees, fire-stops, roof cap.
Be prepared to clean the exchanger and burner head area and nozzle every 500 to 2000 hours
Heat Exchanger
A properly cleaned & maintained furnace operates efficiently and prevents possible soot fires. A
clean flame and good draft will allow longer intervals between cleanings.
To clean the exchanger remove the stack outlet cap. Disconnect burner electrical cord from burner.
Disconnect oil line if it is not flexible and hinge burner door open by removing two nuts at corners
of door – be careful with fragile door gasket. Use cleaning rod with hoe/brush end to move ash to
ends of exchanger. Scoop or vacuum ash from exchanger. Remove stack sections as needed to
get ash from inside of chimney. Horizontal runs will collect ash and create draft problems if not
cleaned regularly.
CAUTION: Used oil may contain heavy metal compounds and foreign materials. When burned, the
compounds are deposited in the furnace and chimney. Protective clothing, including gloves, face
mask, and respirator must be worn when cleaning is done. All waste materials removed when
cleaning the system should be stored in a closed noncombustible container until properly disposed.
Do not store rags or cleaning solvent materials near the furnace, this is a fire hazard.
Burner
While burner door is open clean retention head and igniters. Using a torch to heat retention head
and electrode tips can harden the buildup and make removal easier with a brush. Be sure not to
damage shape of electrodes or fins.
Remove the nozzle with a 5/8 socket and disassemble it into 3 pieces. Clean thoroughly and
reassemble. Be sure small distributor is seated properly in the ferrule or the cap will mash it when
screwed on.
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