Fuel selector valve with shutter mechanism for a gas burner unit

A selector mechanism for selecting and routing a first or a second gas flow to a burner unit of a gas-fired appliance, the burner unit having a burner tube with a mixing chamber, the mixing chamber having at least one air opening to allow an airflow into the mixing chamber to mix with a gas flow passing through the mixing chamber, the burner unit further including a pilot light, associated ODS and first and second pilot gas lines related to the first and second gas flows, comprising:

• a manifold with a burner gas inlet for a burner gas flow and a pilot gas inlet for a pilot gas flow, a burner gas outlet to the mixing chamber, a first pilot gas outlet to the first pilot gas line and a second pilot gas outlet to the second pilot gas line;
• a plate member mounted to move in said manifold between said inlets and outlets, said plate member having a handle part located for manual movement of said plate between a first orientation for the first gas flow and a second orientation for the second gas flow, said plate member including at least one pilot gas aperture therethrough which communicates said pilot gas inlet with either said first or said second pilot gas line depending on either said first or said second orientation, and at least one burner gas aperture therethrough which communicates said burner gas inlet with said burner gas outlet.

A shutter mechanism for controlling an airflow into a burner mixing chamber of a gas burner, comprising:

• a burner gas conduit which has a mixing chamber opening to ambient air communicating with the mixing chamber, said burner gas conduit having a longitudinal axis;
• a cover mounted to overlie said mixing chamber opening in one orientation to reduce if not substantially close airflow through said mixing chamber opening, and to expose said mixing chamber opening in another orientation, said cover capable of moving along said longitudinal axis according to selection of one or another orientation;
• a biasing member biasing said cover to move between said one orientation or another orientation, said biasing member being actuated by a selector mechanism which is used to place said cover in said one orientation or another orientation.

A selector mechanism for selecting and routing a first or a second gas flow to a burner unit of a gas-fired appliance, the burner unit further including at least one pilot light, comprising:

• a manifold with a burner gas inlet for a burner gas flow, and a burner gas outlet,
• a selector member mounted to move in a plane in said manifold between said burner gas inlet and burner gas outlet, said selector member having a handle part located for manual movement of said plate between a first orientation for a first gas flow and a second orientation for a second gas flow, said selector member further including a first burner gas aperture and a second burner gas aperture, said first or said second burner gas aperture communicating with said burner gas outlet depending on either said first or said second orientation being selected through movement of said selector member in said plane to align said first or second burner gas aperture with said burner gas outlet.