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: Systems for treatment of air are provided. In one embodiment, a system comprises a pre-filter layer, a smaller particle filtration layer, a carbon layer and a photocatalytic layer. Among the four layers, the pre-filter layer may be the furthest upstream in a direction of air flow, and the photocatalytic layer may be the furthest downstream in a direction of air flow.

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. The flue damper may further include a damper gate with 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 seat flange may be located on an inner wall of the vent pipe, and a seal may be fixed to an outer edge of the damper gate, where a through-portion of the seal extends through a first perforation in the outer edge of the damper gate.

Abstract: A damper control device may include an appliance control programmed processor for controlling a gas burner, the appliance control programmed processor including a lockout register for storing electronic data information, and a damper control programmed processor for controlling a damper, the damper control programmed processor including a damper request register for storing electronic data information. The damper control programmed processor may be configured for selectively opening or closing the damper responsive to status of the damper request register and controlling status of the lockout register to indicate status of the damper, and the appliance control programmed processor may be configured for controlling status of the damper request register responsive to a call for operation of the gas burner and operating the gas burner only if the lockout register is in an unlock status.

Abstract: This disclosure relates to a fresh air ventilation (FAV) controller. The FAV controller may include multiple input devices for setting a target fresh air ventilation flow rate (FAVFR), an operating FAVFR for an air handler, an operating FAVFR of a first ventilation appliance, an operating FAVFR of a second ventilation appliance. The FAV controller further includes electric interfaces adapted to couple to the air handler and a thermostat for controlling the air handler, a sensor for monitoring an operation of the first ventilation appliance, the second ventilation appliance, a thermometer for monitoring temperature of fresh air in a ventilation path to the air handler, and a motorized damper disposed in the fresh air ventilation path.

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 device for mounting a UV bulb includes a housing having a hole therein, a fixed bracket and an adjustable bracket, the fixed bracket is connected to the housing and the adjustable bracket is rotatably mounted to the side bracket, the adjustable bracket also has means for mounting a UV bulb such that when said UV bulb is mounted to the adjustable bracket, the bulb can be inserted through the hole in the housing and rotated through an arc of approximately 90 degrees.

Abstract: There is provided an improved ultraviolet lamp assembly using an ultraviolet lamp with a vented closed end quartz tube having improved and increased ultraviolet lamp intensity output for increased germicidal and bactericidal effect for use in purification, sterilizing, sanitizing and cleaning systems. The ultraviolet lamp assembly comprises an ultraviolet lamp, a tube operative to house the ultraviolet lamp and comprising a closed end, an open end able to allow insertion of said ultraviolet lamp and having a plurality of vents that allow air into and out of an air space between the ultraviolet lamp and the surrounding tube, a tube divider operatively disposed between said UV lamp and said tube to thereby divide said air space into at least two air space compartments enabling air to circulate through said tube, and an air displacer operatively connected to at least one of said vents and able to produce air flow in said tube.

Abstract: The present invention discloses an ultra-violet device for use with a heating, ventilation, and air conditioning system. The device includes an ultra-violet lamp mounted to a base having a switch for operating the lamp. The ultra-violet lamp and base couple to a mounting plate having a spring-loaded lever for engaging the switch of the base. The spring-loaded lever only engages the switch when the mounting plate, ultra-violet lamp, and base are properly configured. Thus, the ultra-violet device only operates when the device is properly configured.

Abstract: There is provided a method and apparatus for an improved ultraviolet lamp assembly using an ultraviolet (UV) lamp with a sleeve having improved UV lamp temperature characteristics for improved UV lamp intensity output and germicidal affect. The ultraviolet lamp assembly comprises a UV lamp housed in a vented open end quartz sleeve in a portable air conditioning (AC) unit. The quartz sleeve comprises a distal sleeve open end and a proximal base open end through which a UV lamp is secured to the sleeve and AC unit. The proximal open end of the quartz sleeve comprises a plurality of venting slots that allow ambient air to travel into and out of the space between the UV lamp and the sleeve wall. Operation of the AC unit fan results in air flow into the sleeve at a proximal sleeve base end and out through the distal open end of the sleeve to thereby maintain the UV lamp at a desired temperature for improved germicidal affect.

Abstract: An ultraviolet device used for flooding an air duct of an air ventilation system with ultraviolet light comprising a mounting portion, the mounting portion that is mountable to an air duct, at least one mounting bracket which is interchangeably mountable to the mounting portion and at least one ultraviolet light lamp, the lamp is mountable to the mounting bracket wherein the angle at which the lamp mounts to said mounting bracket may be configured to maximize the coverage of ultraviolet light within the air duct.

Abstract: The present invention discloses a motorized drive unit for operating a valve including a gear, a motor, a chain coupling the gear and motor, a housing encasing the motor, gear, and chain, and a rotation limiting piece. Additionally, the present invention discloses a method for mounting a gear to a gate valve handle by providing a gear and a mounting plate, positioning the mounting plate beneath the handle of the gate valve, positioning the gear above the handle of the gate valve, and coupling the mounting plate to the gear. Further, the present invention discloses a method for mounting a gear to a ball valve by providing a gear having a cutout portion, removing the handle from the ball valve stem, placing the second portion of the handle through the cutout portion of the gear, and coupling the handle and the gear to the stem.