Lanair HI140 - Manual (Page 73)

SECTION 20 HI-140 COMBUSTION CHAMBER/HEAT
EXCHANGER CLEANING INSTRUCTIONS
CONTINUED
20.6 Before replacing the combustion chamber access doors, replace the white
gasket seal on the door (contact the Lenan Service Department). When
replacing the gaskets apply a light film of gasket adhesive to adhere the new
gasket to the door. Lube the threads of the screws with a high temperature
lubricant. Re-install the combustion chamber access door with screws. If any
screws are stripped replace with a larger size screw.
CAUTION: To avoid screw breakage, DO NOT OVER TIGHTEN.
CAUTION: The access doors must have an airtight seal to prevent extreme
damage to the combustion chamber.
20.7 Re-install the cabinet door. Replace the inspection port with the #8 hex head
sheet metal screws. Replace burner.
20.8 Remove the 6” chimney connector from the right side of the heater to gain
access to the exhaust manifold. Also remove 1 #8 hex head screw from the
outer and inner clean out port at the rear of the heater. Using an industrial
type canister vacuum cleaner with a high efficiency filter remove all ash
accumulation. Clean and inspect the chimney connector, reconnect it to the
exhaust manifold and replace the screws in the clean out ports on the heater.
Check your draft reading to make sure your barometric damper is properly
set (See Section 5).
20.9 Reconnect all power at the main breaker box, wait ten minutes before turning
the thermostat up. Your heater is now ready for normal operation.
NOTE:
When changing the target brick, call the Lenan Service Department
for assistance at 800-753-1601.
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