Vent proving system
First Claim
1. A vent proving system for use with a heating appliance, the vent proving system comprising:
- a vent;
a sensor positioned within the vent, wherein the sensor is configured for sensing vent temperature within the vent;
a draft hood coupled to the vent, wherein the sensor is positioned downstream of the draft hood; and
a controller electrically connected to the sensor,wherein the controller determines if a back draft condition is present in the vent based on an output from the sensor when the sensor detects a vent temperature below a set point.
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Accused Products
Abstract
A vent proving system is described for use with a gas fired appliance. The gas fired appliance includes a gas burner, a vent damper for selectively opening or closing an exhaust vent from the gas fired appliance and a relay control for operatively controlling the vent damper and the gas burner to open the damper if the gas burner is on. The vent proving system comprises a sensor for sensing a variable in the vent representing air flow direction in the vent. An electrical switch is connected in series between the relay control and the vent damper. A controller is operatively connected to the sensor, the electrical switch and to the relay control.
39 Citations
19 Claims
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1. A vent proving system for use with a heating appliance, the vent proving system comprising:
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a vent; a sensor positioned within the vent, wherein the sensor is configured for sensing vent temperature within the vent; a draft hood coupled to the vent, wherein the sensor is positioned downstream of the draft hood; and a controller electrically connected to the sensor, wherein the controller determines if a back draft condition is present in the vent based on an output from the sensor when the sensor detects a vent temperature below a set point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vent proving system for use with a heating appliance, the vent proving system comprising:
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a vent; a sensor positioned within the vent, wherein the sensor is configured for sensing vent temperature within the vent; a damper for selectively opening or closing the vent, wherein the sensor is positioned downstream of the damper; and a controller electrically connected to the sensor, the controller configured to selectively move the damper for opening and closing the vent, wherein the controller determines if a back draft condition is present in the vent based on an output from the sensor when the sensor detects a vent temperature below a set point. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A vent proving system for use with a heating appliance, the vent proving system comprising:
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a vent for directing exhaust away from the heating appliance; a sensor positioned within the vent, wherein the sensor is configured for sensing vent temperature within the vent after a predetermined time starting when the heating appliance receives a call for heat; and at least one of a draft hood and a damper coupled to the vent, wherein the sensor is positioned downstream of the at least one of the draft hood and the damper, and wherein the vent proving system shuts down the heating appliance when the sensor detects a vent temperature below a set point if the predetermined time has expired. - View Dependent Claims (17, 18, 19)
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Specification