Abstract: An illustrative damper system includes a damper blade that is configured to be positioned within a duct, such as a bypass duct of an HVAC system. A shaft is in communication with the damper blade, a torsion spring is in communication with the shaft, and a force adjustment mechanism is in communication with the torsion spring. The shaft, the damper blade, and the torsion spring may be configured such that the shaft may affect movement of the damper blade about a rotation axis and the torsion spring may provide a bias force to the shaft for biasing the damper blade toward a desired position (e.g. closed position).

Abstract: A filter well mountable dispenser holder securable within a hot tub filter well with the dispenser holder supporting replaceable dispersant containing dispensing cartridges positionable within a circulating flow of water through the filter well to thereby release dispersants therefrom without preventing the circulating flow of water from passing through the filter media proximate the dispensing cartridges.

Abstract: An illustrative damper system includes a damper blade that is configured to be positioned within a duct, such as a bypass duct of an HVAC system. A shaft is in communication with the damper blade, and an actuator or force adjustment mechanism is in communication with the shaft. The actuator or force adjustment mechanism may include a housing and a spring therein, where the spring is in communication with the shaft. The shaft, the damper blade, and the spring may be configured such that the shaft may affect movement of the damper blade about a rotation axis offset from a diametrical axis of the damper blade.

Abstract: An illustrative damper system includes a damper blade, a damper actuator, and a standoff, where the standoff may be configured for use with an insulated duct having an outer surface of the duct, an insulating layer around the outer surface of the duct, and an outer surface of the insulating layer. Illustratively, the standoff may include a body, a mounting mechanism including a first flange, and a second flange spaced from the first flange, where the body, the first flange and the second flange may form an opening or space configured to receive the insulating layer. In some cases, the standoff may include one or more ribs extending between the body and the first and second flanges.

Abstract: An HVAC controller such as a thermostat may include a housing having an aperture formed within the housing and a proximity sensor that is disposed within the housing proximate the aperture. The proximity sensor may include a sense die that has a first IR detector and a second IR detector, and a lens element disposed in front of the sense die. The lens element may be shifted to one side to preferentially direct incident IR energy to the first IR detector at the expense of the second IR detector. An IR energy transparent element may be disposed in front of the lens element, and may include a portion that fits into and seals the aperture formed within the housing. A controller may be configured to receive an electrical signal from the proximity sensor indicating an approach of an individual towards the thermostat, and in response, wake-up a user interface.

Abstract: An HVAC controller may be programmed to initiate a delta T test in response to a request received from a user. The user may initiate the delta T test at the HVAC controller or via a remote device. In some cases, the HVAC controller may be configured to automatically execute a delta T test for each valid equipment stage combination of the HVAC system without receiving further input from the user and to determine both a run time and a stabilized delta T parameter value for each equipment stage combination. The HVAC controller may also record the delta T parameter value and run time for each test in the memory of the HVAC controller. The HVAC controller may be further configured to notify the user when testing for each/all equipment stage combination is complete.

Abstract: A wall mountable connector may be secured to a wall in order to provide mechanical and electrical connections to a thermostat. In some cases, the wall mountable connector and the thermostat may, in combination, be configured to permit the thermostat to attach to the wall mountable connector only when the thermostat is in a particular orientation relative to the wall mountable connector. In some cases, the wall mountable connector includes a plurality of pin terminals that are configured to accommodate a plurality of pins extending from the thermostat. The interaction between the pins and the pin terminals may provide a lock and key arrangement between the wall mountable connector and the thermostat.

Abstract: A wall mountable connector assembly with an optional wall covering plate is disclosed. The wall mountable connector provides electrical connections to each of a plurality of field wires and is configured to provide electrical connections to a thermostat secured to the wall mountable connector. The optional wall covering plate is configured to fit over the wall mountable connector and provide a pleasing appearance.

Abstract: An illustrative damper system includes a damper blade that is configured to be positioned within a duct, such as a bypass duct of an HVAC system. A shaft is in communication with the damper blade, and an actuator or force adjustment mechanism is in communication with the shaft. The actuator or force adjustment mechanism may include a housing and a spring therein, where the spring is in communication with the shaft. The shaft, the damper blade, and the spring may be configured such that the shaft may affect movement of the damper blade about a rotation axis offset from a diametrical axis of the damper blade.

Abstract: An electrical connector includes a housing having contact channels with electrical contacts received therein each having a poke-in spring beam configured to engage an electrical wire when poked-in to the housing. The electrical contact is movable between a resting position when no wire is present in the wire channel and a clearance position where the electrical contact allows the electrical wire to be removed from the wire channel. Pivot levers are held by the housing and are coupled to corresponding electrical contacts with a pivot end pivotably coupled to the housing and a push button end having a push button pressed to move the corresponding electrical contact to the clearance position. When the electrical wire is loaded into the wire channel, the electrical contact is positioned in a pinching position in which the spring beam pinches against the electrical wire in physical contact with the electrical wire.

Abstract: A wall mountable connector for securing a thermostat to a wall may include a plurality of wiring terminals as well as structure enabling an installer or other person to easily electrically connect (e.g. jumper) two or more of the wiring terminals in order to accommodate different equipment installations. For example, in some cases there may be a desire to electrically connect (e.g. jumper) or disconnect certain wiring terminals that correspond to transformer input terminals, which in some equipment installations are intended to be independently powered while in others they are not. In some cases, the wall mountable connector may include a slider with a cam that selectively lifts a conductor to disconnect two or more wiring terminals. The wall mountable connector may also include structure that helps prevent electrically connecting field wires to particular wiring terminals in error, depending on the position of the slider.

Abstract: A wall mountable connector for securing a thermostat to a wall is disclosed. The wall mountable connector may include built in jumper functionality. In some cases, the wall mountable connector may include a plurality of wiring terminals as well as structure enabling an installer or other person to easily electrically connect (e.g. jumper) one or more of the wiring terminals in order to accommodate different equipment installations. For example, in some cases there may be a desire to electrically connect (e.g. jumper) or disconnect certain wiring terminals that correspond to transformer input terminals, which in some equipment installations are intended to be independently powered while in others they are not.

Abstract: An HVAC controller is configured to log and record performance related data related to a performance of an HVAC system over a period of time in one or more performance logs stored in a memory of the HVAC controller. In some cases, the HVAC controller may be configured to retrieve at least some of the performance related data from the performance log that corresponds to a selected period of time that may be selected by a user, and display the retrieved performance related data on a display of the HVAC controller.

Abstract: A wall mountable connector is used for securing a thermostat to a wall. The wall mountable connector provides an electrical connection between a plurality of field wires of an HVAC system and corresponding terminals of a removably mounted thermostat. The wall mountable connector includes a plurality of mounting features that are configured to provide good securement of the wall mountable connector relative to the wall, and in some instances facilitate aligning at least one of the mounting feature of the wall mountable connector with a stud within the wall.

Abstract: An electrical connector includes a housing having contact channels with electrical contacts received therein each having a poke-in spring beam configured to engage an electrical wire when poked-in to the housing. The electrical contact is movable between a resting position when no wire is present in the wire channel and a clearance position where the electrical contact allows the electrical wire to be removed from the wire channel. Pivot levers are held by the housing and are coupled to corresponding electrical contacts with a pivot end pivotably coupled to the housing and a push button end having a push button pressed to move the corresponding electrical contact to the clearance position. When the electrical wire is loaded into the wire channel, the electrical contact is positioned in a pinching position in which the spring beam pinches against the electrical wire in physical contact with the electrical wire.

Abstract: A wall mountable connector may be secured to a wall in order to provide mechanical and electrical connections to a thermostat. In some cases, the wall mountable connector and the thermostat may, in combination, be configured to permit the thermostat to attach to the wall mountable connector only when the thermostat is in a particular orientation relative to the wall mountable connector. In some cases, the wall mountable connector includes a plurality of pin terminals that are configured to accommodate a plurality of pins extending from the thermostat. The interaction between the pins and the pin terminals may provide a lock and key arrangement between the wall mountable connector and the thermostat.

Abstract: A wall mountable connector may be used for securing a thermostat to a wall. The wall mountable connector may provide an electrical connection between a plurality of field wires of an HVAC system and corresponding terminals of a removably mounted thermostat. The wall mountable connector may include a plurality of mounting features that are configured to provide good securement of the wall mountable connector relative to the wall, and in some instances facilitate aligning at least one of the mounting feature of the wall mountable connector with a stud within the wall.

Abstract: A wall mountable connector assembly with an optional wall covering plate is disclosed. The wall mountable connector provides electrical connections to each of a plurality of field wires and is configured to provide electrical connections to a thermostat secured to the wall mountable connector. The optional wall covering plate is configured to fit over the wall mountable connector and provide a pleasing appearance.

Abstract: A wall mountable connector for securing a thermostat to a wall is disclosed. The wall mountable connector may include built in jumper functionality. In some cases, the wall mountable connector may include a plurality of wiring terminals as well as structure enabling an installer or other person to easily electrically connect (e.g. jumper) one or more of the wiring terminals in order to accommodate different equipment installations. For example, in some cases there may be a desire to electrically connect (e.g. jumper) or disconnect certain wiring terminals that correspond to transformer input terminals, which in some equipment installations are intended to be independently powered while in others they are not.

Abstract: A wall mountable connector for securing a thermostat to a wall may include a plurality of wiring terminals as well as structure enabling an installer or other person to easily electrically connect (e.g. jumper) two or more of the wiring terminals in order to accommodate different equipment installations. For example, in some cases there may be a desire to electrically connect (e.g. jumper) or disconnect certain wiring terminals that correspond to transformer input terminals, which in some equipment installations are intended to be independently powered while in others they are not. In some cases, the wall mountable connector may include a slider with a cam that selectively lifts a conductor to disconnect two or more wiring terminals. The wall mountable connector may also include structure that helps prevent electrically connecting field wires to particular wiring terminals in error, depending on the position of the slider.