Abstract:
A gas fireplace comprising a housing adapted to be located in a building. There is a first conduit in the housing to act as an air inlet. In insert is received within the housing. A second conduit in the insert aligns with and is received by the first conduit. The invention permits the construction of a gas fireplace in two stages, a first stage in which the housing is built into the building and a second, subsequent to all building activity, in which the insert is received within the housing.
Abstract:
A gas fireplace assembly for connection to a venting system comprises an outer shell for installation in the interior space of a building with the venting system extending into the outer shell. A fireplace unit is insertable within the shell that includes a combustion chamber. The combustion chamber includes a removable platform supporting a burner unit to be secured within the combustion chamber. The existing venting system is connected to the combustion chamber. The foregoing arrangement permits easy conversion of the fireplace assembly to different styles of decorative burner units or from a decorative gas burner to an efficient heating fireplace system and vice versa in a simple and economical manner.
Abstract:
A fireplace insert for a fireplace cavity formed in a building with a fresh air inlet and a combustion gas outlet. The insert includes an enclosure dimensioned to be insertable within the fireplace cavity to define a combustion chamber for generating heat. A manifold is provided for distributing fresh air from the fresh air inlet to the combustion chamber. The manifold means is positionable at a predetermined location within the fireplace cavity according to the position of the fresh air inlet. A duct communicates the combustion chamber with the combustion gas outlet.
Abstract:
Apparatus for ventilating a fireplace having a combustion chamber within the interior of a building comprising an enclosure defining an air volume and a fan unit for generating a constant negative pressure region within the enclosure. A venting passage communicates the enclosure with the combustion chamber of the fireplace such that the negative pressure within the enclosure draws combustion gases from the combustion chamber into the enclosure to ventilate the fireplace. A valve is provided in the venting passage to control the flow of combustion gases to the enclosure. With this arrangement, the fan unit is operated at a constant speed to generate a constant negative pressure within the enclosure. There is no need to install an expensive variable speed fan to provide different levels of ventilation and, as long as the fan installed is sufficiently powerful to ventilate the enclosure, the valve can be used to adjust the ventilation of the fireplace combustion chamber via the enclosure.