POWER VENTED, FUEL FIRED WATER HEATER WITH SOFT IGNITION SYSTEM

摘要

A power vented, gas fired water heater has a main gas burnerdisposed within a combustion chamber partially bounded by an arrestorplate having a spaced series of flame quenching combustion air inletopenings therein. To provide for a "soft" ignition of extraneous flammablevapors entering the combustion chamber and to limit the build-up ofunignited flammable vapors within the combustion chamber duringnon-demand periods of the water heater, a non-flame type ignition device isdisposed within the combustion chamber and operated at leastintermittently during such non-demand periods.