Domestic fireplace with water heater - has double skinned enclosure containing water to be heated and under-hearth gas burner

摘要

The fireplace surround is constructed in the form of a water jacket through which flows central heating hot water. The fuel burns on hollow tubular fire bars (11) also containing water. Heat is transferred by conduction convection and radiation to the various parts of the fire surround. Below the hearth is a gas burner(3) in the combustion chamber (4). The hot gases pass up a duct (5) at the back of the fireplace and into the main chimney (9). A domestic hot water reservoir (8) is sandwiched between the gas duct and the chimney. A damper (10) is installed at a high point in the chimney and may be closed. . 1 + 2.