Combustion Air Requirements (Common Vent Applications Only) - Rinnai c199i Installation And Operation Manual

Combustion Air Requirements (Common Vent Applications Only)

Common Vent Applications Utilizing Room Air
Room air can be used only in applications that utilizes the approved Rinnai common vent method. (Refer to
Rinnai Common Vent manual for further details)
Combustion
Air Intake
Concentric venting requires
air intake cap to remain
installed.
Common Vent Room Air
Appliance Adapter
Combustion Air Requirements
This water heater requires adequate combustion air for ventilation and dilution of flue gases. Failure to provide
adequate combustion air can result in unit failure, fire, explosion, serious bodily injury or death. Use the follow-
ing methods to ensure adequate combustion air is available for correct and safe operation of this water heater.
Important: Combustion air must be free of corrosive chemicals. Do not provide combustion air from
corrosive environments. Appliance failure due to corrosive air is not covered by warranty.
Combustion air must be free of acid forming chemical such as sulfur, fluorine and chlorine. These chemicals have
been found to cause rapid damage and decay and can become toxic when used as combustion air in gas appli-
ances. Such chemicals can be found in, but not limited to bleach, ammonia, cat litter, aerosol sprays, cleaning
solvents, varnish, paint and air fresheners. Do not store these products or similar products in the vicinity of this
water heater.
Combustion
Exhaust
Air Intake
(Concentric)
Two pipe venting requires air
intake cap to be removed to
accommodate air intake pipe.
C199 Manual
Exhaust
(PVC/CPVC)
7