FVIR TECHNOLOGY
All residential gas-fired water heaters built with FVIR technology meet the latest edition of the North American Standards ANSI Z21.10.1/CSA 4.1. They are specially designed to prevent the ignition of flammable vapours such as aerosol sprays, cleaning solvents, gasoline, paints, paint thinner, and thinner lacker, outside of the water heater.
PV1 Models
Maximum equivalent length |
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3 inch (7.6 cm) vent | 50 feet (15.2 m) |
4 inch (10.2 cm) vent | 180 feet (54.9 m) |
PV2 Models
Maximum equivalent length |
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2 inch (5.1 cm) vent | 50 feet (15.2 m) |
3 inch (7.6 cm) vent | 140 feet (42.7 m) |
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