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2. Visually check top of vent for soot. Call service
person to clean. Some sediment at bottom of vent
is normal.
3. Visually inspect venting system for proper func-
tion, deterioration or leakage.
4. Check that heater area is free from combustible
materials, gasoline, and other flammable vapors
and liquids.
5. Check for and remove any obstruction to the flow
of combustion or ventilation air to heater.
6. Follow pre-start-up check in the Initial Start-up
section.
7. Visually inspect burner flame. Should see light
blue flame. Visually inspect hot surface igniter for
damage, cracking or debris build-up.
8. Check operation of safety devices. Refer to manu-
facturer’s instructions.
9. Follow oil-lubricating instructions on circulator (if
required). Over-oiling will damage circulator.
Water-lubricated circulators do not need oiling.
10. To avoid potential of severe burn, DO NOT REST
HANDS ON OR GRASP PIPES. Use a light touch
- return piping will heat up quickly.
11. Check blower and blower motor. Clean and oil as
necessary.
12. Check for piping leaks around circulators, relief
valves and other fittings. Repair, if found. DO NOT
use petroleum based stop leak.
13. Check air filter and replace if necessary.
Daily:
1. Check that heater area is free from combustible
materials, gasoline, and other flammable vapors
and liquids.
2. Check for and remove any obstruction to the flow
of combustion or ventilation air to heater.
Monthly:
1. Check for piping leaks around circulators, mixing
valves, relief valves, and other fittings. If found,
repair at once. DO NOT use petroleum-based stop
leak compounds.
2. Visually inspect burner flame.
3. Visually inspect venting system for proper func-
tion, deterioration or leakage.
4. Check air vents for leakage.
Quarterly:
1. Check relief valve. Refer to manufacturer’s
instructions on valve.
2. Test low water cut-off, if used. Refer to manufac-
turer’s instructions.
3. Check the air filter; replace if necessary.
APPENDIX
Inside Combustion Air
Contamination:
All heaters experience some condensation during
start-up. The condensate from flue gas is slightly
acidic. In most cases the pH level is not harmful to
vents or drains. When combustion air is contaminated
by vapors from products in areas listed below, the
acidic levels in the condensate increase. Higher acidic
levels attack many materials, including stainless steel
commonly used in high efficiency systems.
The heater can use special corrosion-resistant non-
metallic intake vent material. You may, however,
choose to use outside combustion air for one or more
of these reasons:
• installation is in an area containing contaminants
listed below which will induce acidic condensation.
• you want to reduce infiltration into your building
through openings around windows and doors.
• you are using AL29-4C stainless steel vent pipe,
which is more corrosion-resistant than standard
metallic vent pipe. In extremely contaminated
areas, this may also experience deterioration.
Products causing contaminated combustion air:
• spray cans containing chloro/fluorocarbons
• permanent wave solutions
• chlorinated waxes/cleaners
• chlorine-based swimming pool chemicals
• calcium chloride used for thawing
• sodium chloride used for water softening
• refrigerant leaks
• paint or varnish removers