LIQUID BACK TYPE GAS COMBUSTION HEATING APPARATUS

摘要

A liquid-backed gas-fired heating system (10) is disclosed which utilizes an infrared burner module (12) having a helical coil wrapped concentrically thereabout. The helical coil located in the radiant zone and convective zone of the module (12) receives heat from the hot products of combustion and transfers the heat to a circulating fluid, which in turn transfers the heat through a fan coil (14) to the space to be heated.