Abstract: A ventilator for a building structure is disclosed. The ventilator has a housing defining (i) a first air flow plenum configured to be fluidly connected to the interior of the building at a first end and the exterior of the building at a second end, and (ii) a second air flow plenum configured to be fluidly connected to the interior of the building at a first end and the exterior of the building at a second end. A core defines portions of each of the first air flow plenum and the second air flow plenum and configured to transfer heat between the first air flow plenum and the second air flow plenum. A first sensor is located in the first air flow plenum to provide a sensed characteristic of the air in the first air flow plenum and a second sensor is located in the second air flow plenum to provide a sensed characteristic of the air in the second air flow plenum. A blower configured to move air through at least one of the first air flow plenum and the second air flow plenum.

Abstract: The sealing arrangement includes a connecting device and one or more housing parts of a housing unit for enclosing of a component, typically an attachment component forming a head of the connecting device. The gas permeable end formed in such component can be isolated, so that the sealing arrangement is adapted for use in detecting a detectable gas in a hermetically sealed detection chamber. Thanks to a sealing structure configured at a passageway for the fastening of the connecting device, a housing unit is obtained with a tight radial contact around an intermediate portion of the connecting device. The device is fitted with a flexible hose end, preferably at a barbed nozzle forming the end at the opposite from the gas permeable end. With such arrangement, the hose mounting can be tested for its integrity.

Abstract: The sealing arrangement includes a connecting device and one or more housing parts of a housing unit for enclosing of a component, typically an attachment component forming a head of the connecting device. The gas permeable end formed in such component can be isolated, so that the sealing arrangement is adapted for use in detecting a detectable gas in a hermetically sealed detection chamber. Thanks to a sealing structure configured at a passageway for the fastening of the connecting device, a housing unit is obtained with a tight radial contact around an intermediate portion of the connecting device. The device is fitted with a flexible hose end, preferably at a barbed nozzle forming the end at the opposite from the gas permeable end. With such arrangement, the hose mounting can be tested for its integrity.

Abstract: A damper control assembly includes a damper body movable between a first threshold position and a second threshold position. A motor is operably connected to the damper body, wherein the motor drives the damper between the first threshold position to determine an open position and the second threshold position to determine a closed position. A controller is operably connected to the motor and has a stall detection module that detects a first rotor-lock condition when the motor drives the damper body to the first threshold position and a second rotor-lock condition when the motor drives the damper body to the second threshold position. The controller includes a memory module for storing the first and second threshold positions for use by the controller. The damper control assembly is calibrated to drive the damper body within an operating range having the open and closed positions and that is less extensive than a mechanical range defined by the first and second threshold positions.

Abstract: A damper control assembly includes a damper body movable between a first threshold position and a second threshold position. A motor is operably connected to the damper body, wherein the motor drives the damper between the first threshold position to determine an open position and the second threshold position to determine a closed position. A controller is operably connected to the motor and has a stall detection module that detects a first rotor-lock condition when the motor drives the damper body to the first threshold position and a second rotor-lock condition when the motor drives the damper body to the second threshold position. The controller includes a memory module for storing the first and second threshold positions for use by the controller. The damper control assembly is calibrated to drive the damper body within an operating range having the open and closed positions and that is less extensive than a mechanical range defined by the first and second threshold positions.