초록 ▼

A power burner type gas-fired water heater has a fuel supply manifold which is mounted within a sealed plenum box and supplied with gas from a valve externally mounted on the plenum box and coupled to the manifold via a flex hose disposed within the plenum box and removably connected to the gas valv

A power burner type gas-fired water heater has a fuel supply manifold which is mounted within a sealed plenum box and supplied with gas from a valve externally mounted on the plenum box and coupled to the manifold via a flex hose disposed within the plenum box and removably connected to the gas valve. By simply removing an access wall portion of the plenum box, uncoupling the flex hose from the gas valve and disconnecting the manifold from associated support structure within the plenum box, the manifold may be removed from the plenum box for replacement of the fuel supply orifices carried by the manifold. This facilitates the field modification of the water heater's input rate and/or fuel type.

대표청구항 ▼

[ What is claimed is:] [1.]1. A fuel-fired heating appliance comprising a chamber for receiving hot combustion products, and power burner apparatus for flowing hot combustion products into said chamber, said power burner apparatus including:a plenum structure communicated with said chamber and havin

[ What is claimed is:] [1.]1. A fuel-fired heating appliance comprising a chamber for receiving hot combustion products, and power burner apparatus for flowing hot combustion products into said chamber, said power burner apparatus including:a plenum structure communicated with said chamber and having an access opening, and a removable access panel sealingly covering said access opening;a fuel supply valve mounted on said plenum structure and having an outlet portion;a combustion air supply fan having an outlet communicated with the interior of said plenum structure;a spaced plurality of fuel burners operable to receive and combust a fuel/air mixture and flow hot combustion products into said chamber;a fuel supply manifold removably connected within the interior of said plenum structure, said fuel supply manifold having an inlet conduit removably connected to said outlet portion of said fuel supply valve; anda spaced plurality of fuel discharge orifices removably carried by said fuel supply manifold and operatively aligned with said fuel burners,said power burner apparatus being configured to provide access to said orifices by simply removing said access panel, respectively disconnecting said manifold and said inlet conduit from said plenum structure and said fuel supply valve outlet portion, and then pulling said manifold outwardly through said access opening.