Water heater with flame spill-out prevention arrangement

Abstract From the Canadian patent

Abstract of the Disclosure, A water heater having the inner door that closes the inner access opening lending into the combustion chamber formed as a component part of a unitary manifold assembly which also includes the main burner with its manifold gas supply tube, the pilot burner with its gas supply tube and, the pilot burner control thermocouple with its support tube. The inner door thus may not be removed for servicing of the water heater unless the complete manifold assembly is removed from the inner access opening, in which case the water heater is then rendered inoperative and incapable of main burner ignition to produce burner flames which could otherwise spill-out through an …