Lanair HI140i - Manual (Page 76)

SECTION 20 HI-100i/HI-140i 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 heat exchanger access panel. If any nuts are
stripped, replace (use brass).
GASKET
CAUTION: To avoid screw breakage, DO NOT OVERTIGHTEN.
CAUTION: The clean out panel must have an airtight seal to prevent extreme
damage to the combustion chamber.
20.7 Replace the inspection port with the #8 hex head sheet metal screws (if
removed). Re-install the clean out cover. Replace burner.
Page 55