Form No. 43539470
Oct 2019 A
–17–
13.0)
CLEANING AND ANNUAL MAINTENANCE
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: Check that clearances are being maintained. Make sure that the appliance
area is kept clear and free from combustible materials, gasoline and other flammable vapors and liquids.
Insulated Air Duct: Disconnect air ducting (if equipped) and inspect internally using a flashlight to make
sure no foreign material has collected. Clean any foreign materials.
Through wall kits must be installed properly as per the provided instructions. Kits not installed properly
will cause PPD and other materials to catch on fire at wall penetration point.
Only genuine air ducts designed and supplied by Space-Ray® must be used to avoid excessive
backpressure which will cause heater operational performance issues and cause excessive Carbon
Monoxide, heater component overheating, etc.
Adjustable Air Diverter: Check the adjustable air diverter 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.
Gas Lines and flexible connectors: 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. The flexible gas lines must not be have sharp bends. Heaters installed outdoors are subjected to
sunlight. Sunlight causes rapid aging on components such as flexible rubber gas lines, etc. Flexible rubber
hoses must be reviewed annually during service and replaced if they show the slightest signs of
deterioration (e.g. change in color, chalking of surface, cracks in surface, etc.)
Control Box: Clean the access panel, and the inside of the control box. Remove any dirt or debris including
spider webs. Replace faulty gaskets.
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 heater failure.
Electrode and Flame Sensor Condition: Visually check that the electrode gap (if equipped) is maintained
at 3/16” (4.7mm) 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 adjustments must be done with care.
High Temperature Limit Switch: Check for proper operation. See section 14.5)
Foreign Objects: Check and remove any foreign objects that are present at the heater. The air supply
opening at the bottom panel must be unobstructed. This includes tumble weeds and other growing plants
underneath the heater when installed outdoors.
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, threaded rod or other suspension methods at the connection to the heater and at the ceiling.