Abstract: A hydronic floor heating system as it relates to an HVAC apparatus, approach and system. Aspects of the present system and approach may include a radiant floor optimization mode, low floor temperature in vacation mode, modifying a 300 Hz, or so, reading principle base on implementation of Pseudo-random jittering of a reading event improving short-term accuracy of the individual readings, and a combination of hardware and software filters for using thermal sensors with extended cable length.

Abstract: A system for detection of equipment connections to a thermostat. The thermostat may have one or more terminals with a one-to-one connection to one or more loads respectively of heating, ventilation and/or air conditioning equipment, and one or more terminals with a one-to-one connection to electrical power. One or more detectors may be connected one-to-one to each of the one or more terminals, respectively, for connection to the one or more loads, and the one or more connections to the electrical power. Each detector may be connected to a processor. Each detector may be configured to provide a signal to the processor relative to a corresponding terminal indicating a status of a connection of the terminal to a load or to the electrical power.

Abstract: A hydronic floor heating system as it relates to an HVAC apparatus, approach and system. Aspects of the present system and approach may include a radiant floor optimization mode, low floor temperature in vacation mode, modifying a 300 Hz, or so, reading principle base on implementation of Pseudo-random jittering of a reading event improving short-term accuracy of the individual readings, and a combination of hardware and software filters for using thermal sensors with extended cable length.

Abstract: A hydronic floor heating system as it relates to an HVAC apparatus, approach and system. Aspects of the present system and approach may include a radiant floor optimization mode, low floor temperature in vacation mode, modifying a 300 Hz, or so, reading principle base on implementation of Pseudo-random jittering of a reading event improving short-term accuracy of the individual readings, and a combination of hardware and software filters for using thermal sensors with extended cable length.

Abstract: A thermostat that is configured to be releasably secured to a wall mountable connector, wherein the wall mountable connector includes a jumper switch that permits an installer or other professional to easily form an electrical connection between different wiring terminals of the wall mountable connector in accordance with how particular field wires are connected to the wiring terminals of the wall mountable connector. The thermostat is further configured to automatically determine the position of the jumper switch of the wall mountable connector, and in some cases, change the control of at least some functionality of the thermostat and/or HVAC equipment depending on the position of the jumper switch.

Abstract: A hydronic floor heating system as it relates to an HVAC apparatus, approach and system. Aspects of the present system and approach may include a radiant floor optimization mode, low floor temperature in vacation mode, modifying a 300 Hz, or so, reading principle base on implementation of Pseudo-random jittering of a reading event improving short-term accuracy of the individual readings, and a combination of hardware and software filters for using thermal sensors with extended cable length.

Abstract: A thermostat that is configured to be releasably secured to a wall mountable connector, wherein the wall mountable connector includes a jumper switch that permits an installer or other professional to easily form an electrical connection between different wiring terminals of the wall mountable connector in accordance with how particular field wires are connected to the wiring terminals of the wall mountable connector. The thermostat is further configured to automatically determine the position of the jumper switch of the wall mountable connector, and in some cases, change the control of at least some functionality of the thermostat and/or HVAC equipment depending on the position of the jumper switch.

Abstract: An illustrative electronic assembly having an electrical connector therein to ground an electronic component of the electronic assembly to a grounding feature of a printed wiring assembly (PWA) of the electronic assembly. The electronic assembly may include a housing, the PWA, the electronic component and the electrical connector. The electrical connector may be a conductive and resilient extender or connector that may have a first portion connected to the PWA and a second portion extending generally away from the PWA toward the electronic component. The second portion of the electrical connector may be in mechanical and electrical contact with the electronic component.

Abstract: A surge protection circuit for an electronic device such as an HVAC controller. In one example, the surge protection circuit may include a first voltage clamp, a second voltage clamp, a resistor, and an output port. The first voltage clamp may provide a first clamping voltage between a power input terminal and a common terminal. The second voltage clamp may provide a second clamping voltage that is less than the first clamping voltage. The resistor may be connected in series with the second voltage clamp, and the series connected resistor and second voltage clamp may be connected in parallel with the first voltage clamp. As such, a surge current at the power input terminal may be split between the first voltage clamp and the second voltage clamp. The amount of surge current that is provided to the second voltage clamp may be set by the value of the resistor.

Abstract: A motion detector having a bandpass filter is described herein. One device includes a passive infrared (PIR) sensor configured to generate a signal, and a bandpass filter configured to filter the signal, wherein the bandpass filter comprises a plurality of high pass filters, a plurality of low pass filters, and two operational amplifiers, wherein a portion of the plurality of high pass filters include a capacitor and two resistors.

Abstract: A surge protection circuit for an electronic device such as an HVAC controller. In one example, the surge protection circuit may include a first voltage clamp, a second voltage clamp, a resistor, and an output port. The first voltage clamp may provide a first clamping voltage between a power input terminal and a common terminal. The second voltage clamp may provide a second clamping voltage that is less than the first clamping voltage. The resistor may be connected in series with the second voltage clamp, and the series connected resistor and second voltage clamp may be connected in parallel with the first voltage clamp. As such, a surge current at the power input terminal may be split between the first voltage clamp and the second voltage clamp. The amount of surge current that is provided to the second voltage clamp may be set by the value of the resistor.

Abstract: A motion detector having a bandpass filter is described herein. One device includes a passive infrared (PIR) sensor configured to generate a signal, and a bandpass filter configured to filter the signal, wherein the bandpass filter comprises a plurality of high pass filters, a plurality of low pass filters, and two operational amplifiers, wherein a portion of the plurality of high pass filters include a capacitor and two resistors.

Abstract: An HVAC Controller may include a first sub-assembly and a second sub-assembly capable of releasably engaging the first sub-assembly. The first sub-assembly may include a first housing and a printed circuit board having a controller for providing one or more control signals, where the printed circuit board may be secured relative to the first housing. The second sub-assembly may include a second housing, a power source, one or more output terminals, and a second printed circuit board. The second printed circuit board may be secured relative to the second housing and may have circuitry thereon that is powered by the power source and configured to receive the one or more control signals from the first printed circuit board. The circuitry of the second sub-assembly may set output terminals thereof to a predetermined state when the first sub-assembly is released from the second sub-assembly.

Abstract: A wall mountable connector to provide mechanical and electrical connections for a thermostat. The wall mountable connector may include a field wire receiving cavity, with a first column of wiring terminals and a second column of wiring terminals, with each of the wiring terminals configured to receive a field wire. Each of a first column of pin terminals may be electrically coupled with each of the first column of wiring terminals and each of a second column of pin terminals may be electrically coupled with each of the second column of wiring terminals. In some cases, the first column of pin terminals may be spaced a distance of 3 to 20 millimeters from a first side edge of the housing, and the second column of pin terminals may be spaced a distance of 3 to 20 millimeters from an opposing second side edge of the housing.

Abstract: A thermostat that is configured to be releasably secured to a wall mountable connector, wherein the wall mountable connector includes a jumper switch that permits an installer or other professional to easily form an electrical connection between different wiring terminals of the wall mountable connector in accordance with how particular field wires are connected to the wiring terminals of the wall mountable connector. The thermostat is further configured to automatically determine the position of the jumper switch of the wall mountable connector, and in some cases, change the control of at least some functionality of the thermostat and/or HVAC equipment depending on the position of the jumper switch.

Abstract: A wall mountable connector to provide mechanical and electrical connections for a thermostat. The wall mountable connector may include a field wire receiving cavity, with a first column of wiring terminals and a second column of wiring terminals, with each of the wiring terminals configured to receive a field wire. Each of a first column of pin terminals may be electrically coupled with each of the first column of wiring terminals and each of a second column of pin terminals may be electrically coupled with each of the second column of wiring terminals. In some cases, the first column of pin terminals may be spaced a distance of 3 to 20 millimeters from a first side edge of the housing, and the second column of pin terminals may be spaced a distance of 3 to 20 millimeters from an opposing second side edge of the housing.

Abstract: An HVAC Controller may include a first sub-assembly and a second sub-assembly releasably engageble with the first sub-assembly. The first sub-assembly may include a first housing and a printed circuit board capable of being secured relative to the first housing and capable of providing one or more signals. The second sub-assembly may include a second housing and a second printed circuit board capable of being secured relative to the second housing and capable of receiving the one or more signals from the first printed circuit boards when the first sub-assembly is releasably engaging the second sub-assembly. The first printed circuit board and the second printed circuit board each may have one or more component mounted on sides facing one another, the components each extending a distance. The sum of the distances may be greater than a distance spacing the facing sides of the printed circuit boards.

Abstract: An HVAC Controller may include a first sub-assembly and a second sub-assembly releasably engageble with the first sub-assembly. The first sub-assembly may include a first housing and a printed circuit board capable of being secured relative to the first housing and capable of providing one or more signals. The second sub-assembly may include a second housing and a second printed circuit board capable of being secured relative to the second housing and capable of receiving the one or more signals from the first printed circuit boards when the first sub-assembly is releasably engaging the second sub-assembly. The first printed circuit board and the second printed circuit board each may have one or more component mounted on sides facing one another, the components each extending a distance. The sum of the distances may be greater than a distance spacing the facing sides of the printed circuit boards.

Abstract: An HVAC Controller may include a first sub-assembly and a second sub-assembly capable of releasably engaging the first sub-assembly. The first sub-assembly may include a first housing and a printed circuit board having a controller for providing one or more control signals, where the printed circuit board may be secured relative to the first housing. The second sub-assembly may include a second housing, a power source, one or more output terminals, and a second printed circuit board. The second printed circuit board may be secured relative to the second housing and may have circuitry thereon that is powered by the power source and configured to receive the one or more control signals from the first printed circuit board. The circuitry of the second sub-assembly may set output terminals thereof to a predetermined state when the first sub-assembly is released from the second sub-assembly.

Abstract: A surge protection circuit for an electronic device such as an HVAC controller. In one example, the surge protection circuit may include a first voltage clamp, a second voltage clamp, a resistor, and an output port. The first voltage clamp may provide a first clamping voltage between a power input terminal and a common terminal. The second voltage clamp may provide a second clamping voltage that is less than the first clamping voltage. The resistor may be connected in series with the second voltage clamp, and the series connected resistor and second voltage clamp may be connected in parallel with the first voltage clamp. As such, a surge current at the power input terminal may be split between the first voltage clamp and the second voltage clamp. The amount of surge current that is provided to the second voltage clamp may be set by the value of the resistor.