Rinnai I-Series Condensing Boiler Combi Manual 41
• This boiler requires adequate combuson air for venlaon and diluon of ue gases. Failure to
provide adequate combuson air can result in unit failure, re, explosion, serious bodily injury
or death. Use the following methods to ensure adequate combuson air is available for correct
and safe operaon of this boiler.
• Direct Venng is recommended in unusually ght buildings or in installaon locaons subject to
signicant negave air pressure.
Combuson air must be free of corrosive chemicals. Do not provide combuson air from
corrosive environments. Appliance failure due to corrosive air is not covered by warranty.
IMPORTANT
Vent Sizes
• 2 in. PVC
• 2 in. (60 mm) PP
• 3 in. PVC
• 3 in. (80 mm) PP
Vent Lengths
65 (20 m) 150 (46 m)
• 45° elbow is equivalent to 3 (1 m)
• 90° elbow is equivalent to 6 (2 m)
ACCEPTABLE ACCEPTABLE NOT ACCEPTABLE
90° Elbows,
Long Sweep
90° Elbows,
Short Sweep
90° Elbows,
Close Turn
Vent length includes the addional venng, ngs and terminaons.
For applicaons containing corrosive indoor air, this appliance must be installed as direct vent. DO
NOT use room air in applicaons where combuson air contains acid forming chemicals such as
sulfur, uorine and chlorine. These chemicals have been found to cause rapid damage and decay
and can become toxic when used as combuson air in gas appliances. Such chemicals can be found
in, but not limited to bleach, ammonia, cat lier, aerosol sprays, cleaning solvents, varnish, paint
and air fresheners. Do not store these products or similar products in the vicinity of this boiler.
WARNING