Abstract: A flue damper may include a vent pipe with a first side leading to an outlet of the flue damper and a second side leading to an inlet of the flue damper. A damper gate of the flue damper may be movable between an open state and a closed state, where in the open state, the first side of the vent pipe is in fluid communication with the second side, and where in the closed state, the damper gate interrupts fluid communication between the first side and the second side. A drainage port may also be included, and a plug may be movable relative to the drainage port to selectively seal the drainage port when the damper gate remains in the closed state.

Abstract: A flue damper may include a flue pipe with a first side leading to an outlet of the flue damper and a second side leading to an inlet of the flue damper. A damper gate may be included and have an open state and a closed state, where in the open state, the first side of the flue pipe is in fluid communication with the second side, and where in the closed state, the damper gate interrupts fluid communication between the first side and the second side. A float may be secured to an upper surface of the damper gate. The upper surface of the damper gate may face the first side of the flue pipe when the damper gate is in the closed state such that the damper gate at least partially opens when condensate collects within the first side of the flue pipe.

Abstract: An exemplary embodiment of the present disclosure provides a flue gas outlet assembly including a flue gas inlet configured to connect to an exhaust outlet of a fuel burning device, a flue gas outlet, and a flue pipe condensate drain assembly including a condensate inlet, a condensate outlet, and a float valve disposed between the condensate inlet and the condensate outlet, the float valve including a bullet-shaped float, wherein the float valve is biased closed and is configured to open to permit a flow of condensate from the condensate inlet to the condensate outlet upon a sufficient amount of condensate collecting proximate the float valve.

Abstract: A flue damper may include a flue pipe with a first side leading to an outlet of the flue damper and a second side leading to an inlet of the flue damper. A damper gate may be included and have an open state and a closed state, where in the open state, the first side of the flue pipe is in fluid communication with the second side, and where in the closed state, the damper gate interrupts fluid communication between the first side and the second side. A float may be secured to an upper surface of the damper gate. The upper surface of the damper gate may face the first side of the flue pipe when the damper gate is in the closed state such that the damper gate at least partially opens when condensate collects within the first side of the flue pipe.

Abstract: A flue damper may include a vent pipe with a first side leading to an outlet of the flue damper and a second side leading to an inlet of the flue damper. A damper gate of the flue damper may be movable between an open state and a closed state, where in the open state, the first side of the vent pipe is in fluid communication with the second side, and where in the closed state, the damper gate interrupts fluid communication between the first side and the second side. A drainage port may also be included, and a plug may be movable relative to the drainage port to selectively seal the drainage port when the damper gate remains in the closed state.

Abstract: A damper system comprises a damper slide adapted to couple to a wall with a first outlet. In one embodiment, the damper slide has a first opening and is adapted to operate in a first position and a second position. In the first position, the first opening is at least partially aligned with the first outlet. The first opening and the first outlet are at least partially offset in the second position.

Abstract: A damper system comprises a damper blade having open and closed states. The damper blade is movable in a linear direction only between the open and closed states. The damper blade may fully overlap with a flue passage in the closed state, and the damper blade may lack any overlap with the flue passage in the open state. A portion of the damper blade may directly contact a switch activation arm in the open state, wherein the switch activation arm confirms the open state of the damper blade.

Abstract: A damper system comprises a damper slide adapted to couple to a wall with a first outlet. In one embodiment, the damper slide has a first opening and is adapted to operate in a first position and a second position. In the first position, the first opening is at least partially aligned with the first outlet. The first opening and the first outlet are at least partially offset in the second position.

Abstract: A damper system comprises a damper blade having open and closed states. The damper blade is movable in a linear direction only between the open and closed states. The damper blade may fully overlap with a flue passage in the closed state, and the damper blade may lack any overlap with the flue passage in the open state. A portion of the damper blade may directly contact a switch activation arm in the open state, wherein the switch activation arm confirms the open state of the damper blade.

Abstract: A water heater having of a tank defining a storage space for water. A heat source in a combustion chamber is operable to heat water in the storage space and has a first state and a heating state. A flue is part of a gas flow passage through which combustion gases are communicated towards a first location. A flue damper has closed and open states. A powered device in an on state induces flow of combustion gases from the combustion chamber towards the first location. A control is configured to: a) process a user input identifying a target output water temperature and generate a call for heat; and b) in response thereto i) cause the powered device to change from its first state; ii) cause the flue damper to change from its closed state towards its open state; and iii) cause the heat source to change from its first state into its heating state.

Abstract: A wireless damper control device comprises a damper positioned in a flue, movable between a closed position where the flue is blocked and an open position, a damper controller which sends a damper signal which moves the damper between the open position and the closed position, and a fire side controller which transmits a fireplace signal to open a gas valve to initiate combustion when a fire is desired at a fireplace, and to close the gas valve to terminate combustion when a fire is no longer desired at the fireplace, and which receives a damper status signal from the damper controller indicating whether the damper is in the closed position or the open position.

Abstract: A wireless damper control device comprises a damper positioned in a flue, movable between a closed position where the flue is blocked and an open position, a damper controller which sends a damper signal which moves the damper between the open position and the closed position, and a fire side controller which transmits a fireplace signal to open a gas valve to initiate combustion when a fire is desired at a fireplace, and to close the gas valve to terminate combustion when a fire is no longer desired at the fireplace, and which receives a damper status signal from the damper controller indicating whether the damper is in the closed position or the open position.

Abstract: A millivolt damper control device comprises a damper movable between a closed position where a flue is blocked and an open position, a thermoelectric device having an input voltage, a battery having a voltage, and a controller comprising a comparator circuit which compares the input voltage with a reference voltage based upon the voltage of the battery. When the input voltage is greater than or equal to the reference voltage, the comparator circuit transmits a damper signal to move the damper to the open position.

Abstract: A damper control device suitable for use in a fireplace comprises a flue, wherein products of combustion from the fireplace enter the flue, a damper positioned in a damper pipe which is connected to the flue, with the damper movable between open and closed positions, a motor having a shaft connected to the damper, and a control circuit which initiates combustion and which receives a damper signal which indicates whether the damper is in the open or closed position. In response to a request for heat, the control circuit initiates combustion after receiving the damper signal indicating that the damper is in the open position. The damper control device can also have a mounting ring extending generally perpendicularly form the damper pipe for connecting the damper pipe to the flue. For air-cooled flues, an adapter can be added to allow passage of air along the flue. A status module may be provided for operational or troubleshooting purposes.

Abstract: A damper control device suitable for use in a fireplace comprises a flue, wherein products of combustion from the fireplace enter the flue, a damper positioned in a damper pipe which is connected to the flue, with the damper movable between open and closed positions, a motor having a shaft connected to the damper, and a control circuit which initiates combustion and which receives a damper signal which indicates whether the damper is in the open or closed position. In response to a request for heat, the control circuit initiates combustion after receiving the damper signal indicating that the damper is in the open position. The damper control device can also have a mounting ring extending generally perpendicularly form the damper pipe for connecting the damper pipe to the flue. For air-cooled flues, an adapter can be added to allow passage of air along the flue. A status module may be provided for operational or troubleshooting purposes.

Abstract: A damper control device is disclosed comprising a mounting plate, a motor assembly coupled to the mounting plate and having a shaft extending therefrom, and a single circuit board coupled to the mounting plate, comprising relay control circuitry which rotates the shaft to an open position in response to a first signal, rotates the shaft to a closed position in response to a second signal, and time delay circuitry which holds the shaft in the open position for a period of time after receipt of the second signal. Preferably the damper control device can be used with an oil-fired heating appliance.

Abstract: A device for controlling a damper in an appliance is disclosed comprising a motor having a rotatable shaft extending therefrom which is operatively connected to a plate of the damper, a control circuit which transmits current to the motor to rotate the shaft and in turn rotate the plate to a first position and to a second position, and a dynamic brake operatively connected to the motor, which acts to reduce rotation of the shaft when the circuit supplying current to the motor is opened.

Abstract: A device for controlling a damper in an appliance is disclosed comprising a motor having a rotatable shaft extending therefrom which is operatively connected to a plate of the damper, a control circuit which transmits current to the motor to rotate the shaft and in turn rotate the plate to a first position and to a second position, and a dynamic brake operatively connected to the motor, which acts to reduce rotation of the shaft when the circuit supplying current to the motor is opened.

Abstract: A damper control device is disclosed comprising a mounting plate, a motor assembly coupled to the mounting plate and having a shaft extending therefrom, and a single circuit board coupled to the mounting plate, comprising relay control circuitry which rotates the shaft to an open position in response to a first signal, rotates the shaft to a closed position in response to a second signal, and time delay circuitry which holds the shaft in the open position for a period of time after receipt of the second signal. Preferably the damper control device can be used with an oil-fired heating appliance.

Abstract: A device for controlling a gas-fired appliance is provided. The device includes a motor assembly having a shaft extending therefrom and a cam coupled to the shaft for rotation therewith. The cam is coupled to a damper plate of the gas-fired appliance and the plate is configured to rotate with the cam responsive to rotation of the motor shaft. The device further includes a printed circuit board having a control switch mounted thereon. The cam is configured to selectively actuate the control switch upon rotation of the cam. The inventive control device may also include a mounting plate to which the motor assembly and circuit board may be mounted. The mounting plate may be an injection-molded, plastic part. In accordance with the present invention the cam is supported on the printed circuit board as opposed to the mounting plate thereby ensuring an accurate positional relationship between the cam and the control switch.