Horizontal Gas Fired Hot Water Boiler

Horizontal fire tube boilers are those in which the combustion products, as well as the water surrounding them, are sent through the tubes. Horizontal water tube boilers are those in which the combustion products surround the water-flowing tubes. Vertical Boiler.A gas water heater is a gas-fired hot water generator. Such a water heater has a burner that can heat water by means of natural gas or propane. There are different types of gas-fired water heaters.The horizontal fire-tube boiler is also typical of marine applications, using the Scotch boiler; thus, these boilers are commonly referred to as "scotch-marine" or "marine" type boilers.