초록 ▼

A water heater including a water tank, a combustion chamber beneath the tank, a gas burner in the combustion chamber, an air plenum upstream of the combustion chamber, a flame arrestor located such that air in the air plenum passes through the flame arrestor to reach the combustion chamber, and a fl

A water heater including a water tank, a combustion chamber beneath the tank, a gas burner in the combustion chamber, an air plenum upstream of the combustion chamber, a flame arrestor located such that air in the air plenum passes through the flame arrestor to reach the combustion chamber, and a flue extending upwardly from the combustion chamber and through the water tank.

대표청구항 ▼

[ What is claimed is:] [1.]1. A water heater comprising:a water tank;a combustion chamber/air plenum beneath the tank;a gas burner in the combustion chamber/air plenum;a flue extending upwardly from the combustion chamber/air plenum and through the water tank;a jacket surrounding the water tank;insu

[ What is claimed is:] [1.]1. A water heater comprising:a water tank;a combustion chamber/air plenum beneath the tank;a gas burner in the combustion chamber/air plenum;a flue extending upwardly from the combustion chamber/air plenum and through the water tank;a jacket surrounding the water tank;insulation between the water tank and the jacket; anda base pan including a generally horizontal bottom wall partially defining the combustion chamber/air plenum, the base pan also including a first step above and surrounding the bottom wall, the first step supporting the water tank, and a second step above and surrounding the first step, the second step supporting the insulation and the jacket.