Form 43471030
-28-
Sept 2011
19.0)
CLEANING AND ANNUAL MAINTENANCE
ELECTRIC SHOCK & EXPLOSION HAZARD
Disconnect electrical power and gas supply before
servicing.
Failure to do so may result in death or serious injury.
This heater must be cleaned and serviced annually by a qualified contractor before the start of each heating
season and at any time excessive accumulation of dust and dirt is observed. Maximum heating efficiency and
clean combustion will be maintained by keeping the heater clean. To clean the heater, turn off all electrical and
gas supply to the heater.
The contractor shall check the following during periodic maintenance.
••••
Clearances to combustibles:
Clearances to combustibles:
Clearances to combustibles:
Clearances to combustibles: Check that clearances are being maintained. Make sure there are no
flammable objects, liquids or vapors near the heater. See also Section 4.0).
••••
Reflectors:
Reflectors:
Reflectors:
Reflectors: Reflectors should be kept clean, at a minimum blow off the reflectors. (Dirty reflectors may
reduce heat output).
••••
Heat exchanger tubes:
Heat exchanger tubes:
Heat exchanger tubes:
Heat exchanger tubes: Inspect the heat exchanger tubes to make sure they are not cracked, sagging or
showing signs of fatigue.
••••
Combustion air intake:
Combustion air intake:
Combustion air intake:
Combustion air intake: Disconnect combustion air intake from the control box and inspect internally using a
flashlight to make sure no foreign material has collected in the tubes and that there is no obstruction
around the air intake openings. Clean any foreign materials. Inspect any joints to make sure they are
completely sealed. See also Section 15.0).
••••
Venting System:
Venting System:
Venting System:
Venting System: Disconnect vent pipe and inspect internally using a flashlight to make sure no foreign
material has collected in the pipes. Check the external vent cap and make sure that there is no obstruction
around the exhaust openings. Clean any foreign materials. Inspect any joints to make sure they are
completely sealed. See also Section C.
••••
Gas lines:
Gas lines:
Gas lines:
Gas lines: Make sure that the gas lines are not leaking. Check the gas connection to the heater for any signs
of damage, fatigue or corrosion. If there are any signs of damage to the gas connection or leaks found in the
gas piping, immediately stop using the heater until the gas pipe and connections have been repaired or
replaced. Check that the gas lines are not bearing the weight of the heater. See also Section 11.0).
••••
Control
Control
Control
Control Box:
Box:
Box:
Box: In order to extend the longevity of the heater, the heat exchanger tube and the burner must be
level. Check that the control box is level. Clean the access panel, and the inside of the control box.
••••
Blower wheel and housing:
Blower wheel and housing:
Blower wheel and housing:
Blower wheel and housing: Check that the blower wheel spins freely, blow out any dust or dirt with
compressed air. A dirty wheel can reduce the volume of air pulled and can result in premature tube failure.
••••
Electrode condition:
Electrode condition:
Electrode condition:
Electrode condition: Visually check that the electrode gap is maintained at 3/16” and that the tips of the
flame sensor and spark electrode are free from deposits. Clean off any deposits. Check that the electrode
ceramic is free from cracks.
.
.
. CAUTION: The ceramic portion of the electrode is very fragile so any cleaning or
CAUTION: The ceramic portion of the electrode is very fragile so any cleaning or
CAUTION: The ceramic portion of the electrode is very fragile so any cleaning or
CAUTION: The ceramic portion of the electrode is very fragile so any cleaning or
adjustments must be done with care.
adjustments must be done with care.
adjustments must be done with care.
adjustments must be done with care. See Section 21.1).
••••
Suspension system:
Suspension system:
Suspension system:
Suspension system: Check that the suspension system is holding the heater level. Make sure that the heater
is hanging securely, look for any evidence where the heater may have been hit accidentally and tighten any
loose hanging points. Check that S hooks are closed. Check that there is no evidence of wear on the chain at
the connection to the heater and at the ceiling.
••••
Main Burner and Orifice:
Main Burner and Orifice:
Main Burner and Orifice:
Main Burner and Orifice: Check the Main burner and orifice; remove any dirt or debris including spider webs.
See Section 21.1).
