S
ERIES
DECO-TUBE
37
A
PRIL
/25/2013
Maintenance & Trouble Shooting
Maintenance
For best performance, the certain minimal maintenance procedures should be performed before
each heating season:
Before performing any services or maintenance, shut off gas and electrical supply to heater.
Check condition of forced air blower scroll and motor. Dirt and dust may be blown or
vacuumed from the blower.
Check condition of burner. Remove any foreign objects or debris from inside the burner box
or burner cup.
Inspect the igniter. Replace igniter if there is excessive wear or erosion, breakage or other
defects.
Be sure the burner observation window is clean and free of cracks or holes. Clean or
replace as necessary.
Check the flue pipe for soot or dirt and reattach to the heater after cleaning as necessary.
The reflector sections may be cleaned by wiping with a damp cloth.
A service agency qualified to adjust and repair infrared heaters should be engaged for
service other than routine maintenance.
Be sure vent terminal and fresh air inlet are free from obstructions. If either pipe is
restricted, the safety air switch will not operate properly, and the heater could fail to operate.
Check the inside of the heat exchanger tube visually with a flashlight. If carbon or scale are
present, scrape or otherwise remove deposits (a wire brush works well)
Annually verify hose gas supply in heater post and all connections for gas leaks.
Trouble Shooting
Blower Motor Fails to Run
Is the heater plugged in? Is there 115V at the burner receptacle?
Check blower side door for seal. Repair as necessary.
Check blower for obstructions. Replace blower if necessary.
No Gas Supply
Check to see if manual supply valve to heater is ON.
Check to see if gas valve knob on heater gas control is ON.
Supply gas pressure can be checked at 1/8" NPT pressure tap in gas supply system.
Is combination gas control opening? No manifold pressure indicates valve is closed. Gas
pressure downstream of gas control can be measured by connecting a manometer to
pressure tap on control. If the valve is closed, either the gas valve or the ignition module is
faulty.