A low profile shaft adaptor for coupling an output drive member of an HVAC actuator with an input drive member of a valve. The shaft adaptor may include a clamp for selectively clamping onto the input drive member of the valve, a drive interface configured to form an interference fit with an output drive member of the HVAC actuator, and a bracket configured to mechanically couple the drive interface and the clamp such that rotational movement of the drive interface by way of the interference fit with the output drive member of the HVAC actuator causes corresponding rotational movement of the clamp and thus the input drive member of the valve.

A drying and filtering device used for drying and filtering compressed air comprises a housing (10) having a cavity (11), an upper cover (20) disposed on the roof of the housing (10), a lower cover (30) having a drainage port (31) disposed at the bottom of the housing (10), and a cooling tube (40) disposed in the housing (10). An air inlet (21) and an air outlet (22) are provided at two sides of the upper cover (20). The cavity (11) being in communication with the air inlet (21), the air outlet (22), and the drainage port (31) respectively. The cooling tube (40) is disposed in the cavity (11) and extends from a position near the upper cover (20) downward to the lower cover (30). Compressed air enters the cavity (11) from the air inlet (21) on the upper cover (20), and contacts the cooling tube (40).

According to principles of the present inventive concepts, an HVAC fluid conditioning system comprises an inlet port configured to receive HVAC fluid from an HVAC condensation line. A conditioning system treats the HVAC fluid with a chemical or other treatment process to prevent the growth of harmful pollutants within the HVAC condensation line. The treated HVAC fluid is then released from the conditioning system through an outlet port thereof and back into the HVAC condensation line. A trap system can be provided to trap harmful gases created during the HVAC fluid treatment process.

According to principles of the present inventive concepts, an HVAC fluid conditioning system comprises an inlet port configured to receive HVAC fluid from an HVAC condensation line. A conditioning system treats the HVAC fluid with a chemical or other treatment process to prevent the growth of harmful pollutants within the HVAC condensation line. The treated HVAC fluid is then released from the conditioning system through an outlet port thereof and back into the HVAC condensation line. A trap system can be provided to trap harmful gases created during the HVAC fluid treatment process.

A heating, ventilation, and air conditioning (HVAC) communication method comprising generating, at a transmitter device, a primary signal and a secondary signal. Each of the signals comprise digital temperature data and digital humidity data. The secondary signal is a phase shifted representation of the primary signal. The HVAC communication method further comprises transmitting the primary signal and the secondary signal to a receiver device via a wireless link. The method continues by storing a look-up table that maps bit streams to temperature values and humidity values. The method continues by performing, at the receiver device, a comparison using the primary signal to execute error checking, and determining, at the receiver device, a temperature value and a humidity value using the look-up table based on the comparison.

A HVAC unit manufacturing method and a HVAC system are, disclosed herein. In one embodiment, the HVAC system includes: a controller having control board terminals, a parallel wiring harness having a first and a second connection header, the first connection header coupled to the control board terminals, and a switch having terminals. The terminals of the switch including: a pair of functional terminals configured to indicate a status of the switch and a pair of jumpered terminals independent of the pair of functional terminals and internally connected together within the switch, wherein designated combinations of the terminals indicate a circuit configuration for employing the switch in the HVAC system with each of the terminals having a particular design that dictates a specific corresponding connection header be used for each of the designated combinations, wherein a single one of the designated combinations of the terminals corresponds to the second connection header.

A HVAC unit manufacturing method and a HVAC system are, disclosed herein. In one embodiment, the HVAC system includes: a controller having control board terminals, a parallel wiring harness having a first and a second connection header, the first connection header coupled to the control board terminals, and a switch having terminals. The terminals of the switch including: a pair of functional terminals configured to indicate a status of the switch and a pair of jumpered terminals independent of the pair of functional terminals and internally connected together within the switch, wherein designated combinations of the terminals indicate a circuit configuration for employing the switch in the HVAC system with each of the terminals having a particular design that dictates a specific corresponding connection header be used for each of the designated combinations, wherein a single one of the designated combinations of the terminals corresponds to the second connection header.

A device for collecting waste cleaning fluid and debris from an installed A/C unit by placing and supporting a funnel shaped collection bib under the A/C unit by means of device mounting brackets placed behind the A/C unit, the bib being held open by an arcuate rib attached to the mounting brackets, and by a supporting cord passing through the rib, brackets, and bib hem and being cinched against the device.

A system and related method that provides, but is not limited thereto, a thin structure with unique combination of thermal management and stress supporting properties. An advantage associated with the system and method includes, but is not limited thereto, the concept providing a multifunctional design that it is able to spread, store, and dissipate intense thermal fluxes while also being able to carry very high structural loads. An aspect associated with an approach may include, but is not limited thereto, a large area system for isothermalizing a localized heating source that has many applications. For example it can be used to mitigate the thermal buckling of ship deck plates, landing pad structures, or any other structures subjected to localized heating and compressive forces. It can also be used as a thermal regulation system in numerous applications, including but not limited to under-floor heating for residential or commercial buildings or for the de-icing of roads, runways, tunnels, sidewalks, and bridge surfaces.

Apparatus and methods provide for a dual pass air flow configuration in an air conditioning system to improve efficiency and performance of the air conditioning system. An air conditioning device includes a pre-conditioned air passage chamber separated from a post-conditioned air passage chamber by an impermeable partition. A coil system separates the pre-conditioned air passage chamber and the post-conditioned air passage chamber from a partially-conditioned air passage chamber. The coil system is configured to receive air from the pre-conditioned air passage chamber and to condition the air passing through the coil system into the partially-conditioned air passage chamber. The coil system is also configured to receive the air from the partially-conditioned air and further condition the air as it passes through the coil system into the post-conditioned air passage chamber.