Dual fuel heater with selector valve
First Claim
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1. A heater assembly for use with one of a first fuel type or a second fuel type different than the first, the heater assembly comprising:
- a housing having first and second fuel hook-ups, the first fuel hook-up for connecting a first fuel type to the heater assembly and the second fuel hook-up for connecting a second fuel type to the heater assembly;
a first flow path from the first fuel hook-up and a second flow path from the second fuel hook-up;
an actuation member comprising a first valve member positioned within the first flow path and a second valve member positioned within the second flow path, the actuation member having an end located at the second fuel hook-up, wherein the actuation member is configured such that in a first position one of the first flow path and the second flow path is open and the other is closed, and connecting a fuel source to the heater assembly at the second fuel hook-up moves the actuation member from the first position to a second position which opens the closed flow path from the first position and closes the open flow path from the first position; and
a low pressure cut-off switch positioned in the first flow path.
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Abstract
A heater assembly can be used with a gas appliance. The gas appliance can be a dual fuel appliance for use with one of a first fuel type or a second fuel type different than the first. The heater assembly can include a housing, and an actuation member. The housing has a first fuel hook-up for connecting the first fuel type to the heater assembly, a second fuel hook-up for connecting the second fuel type to the heater assembly, and an internal valve. The actuation member can control the position of the internal valve based on whether the first or the second fuel hook-up is used.
353 Citations
14 Claims
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1. A heater assembly for use with one of a first fuel type or a second fuel type different than the first, the heater assembly comprising:
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a housing having first and second fuel hook-ups, the first fuel hook-up for connecting a first fuel type to the heater assembly and the second fuel hook-up for connecting a second fuel type to the heater assembly; a first flow path from the first fuel hook-up and a second flow path from the second fuel hook-up; an actuation member comprising a first valve member positioned within the first flow path and a second valve member positioned within the second flow path, the actuation member having an end located at the second fuel hook-up, wherein the actuation member is configured such that in a first position one of the first flow path and the second flow path is open and the other is closed, and connecting a fuel source to the heater assembly at the second fuel hook-up moves the actuation member from the first position to a second position which opens the closed flow path from the first position and closes the open flow path from the first position; and a low pressure cut-off switch positioned in the first flow path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A heater assembly for use with one of a first fuel type or a second fuel type different than the first, the heater assembly comprising:
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an inlet valve housing comprising; first and second fuel hook-ups, the first fuel hook-up for connecting a first fuel type to the heater assembly and the second fuel hook-up for connecting a second fuel type to the heater assembly; an outlet; a low pressure cut-off switch; a pressure regulator; and an actuation member; wherein the inlet valve housing defines a first flow path from the first fuel hook-up to the outlet and a second flow path from the second fuel hook-up to the outlet, the low pressure cut-off switch within the first flow path and the pressure regulator within the second flow path; wherein the actuation member is configured to move between a first position wherein the actuation member substantially closes the second flow path and a second position wherein the actuation member substantially closes the first flow path, wherein connecting a fuel source to the heater assembly at the second fuel hook-up moves the actuation member from the first position to the second position. - View Dependent Claims (11, 12, 13, 14)
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Specification