Abstract: A method of operating a vapor compression system configured for environmentally conditioning a space comprising: providing a compressor of the vapor compression system with a variable speed drive, operating the compressor at a first speed in response to a start command, determining a demand speed of the compressor based at least in part on a user selected target value for an environmental condition within the space, determining a maximum allowable compressor speed of the compressor based at least in part on a condition of a parameter of the vapor compression system, reducing the speed of the compressor from the first speed to a second speed, maintaining the speed of the compressor below the first speed, and operating the compressor at the demand speed once a startup condition is satisfied.

Abstract: A system includes an indoor HVAC unit and an outdoor HVAC unit in communication with the indoor HVAC unit. The outdoor HVAC unit comprises a compressor, a vapor header in communication with the indoor HVAC unit and compressor, and at least one check valve to allow vapor refrigerant flow into the indoor HVAC unit during a cooling mode and to prevent liquid refrigerant from exiting the vapor header when in a heating mode. A method of operating said system is also disclosed.

Abstract: A climate control outdoor unit has: a housing; a compressor having an electric motor; a refrigerant-air heat exchanger; an electric fan positioned to drive an air flow along an air flowpath across the refrigerant-air heat exchanger; and an inverter unit coupled to the electric motor to drive the electric motor. An additional air flowpath extends along the inverter unit to merge with the air flowpath.

Abstract: A system includes an indoor HVAC unit and an outdoor HVAC unit in communication with the indoor HVAC unit. The outdoor HVAC unit comprises a compressor, a vapor header in communication with the indoor HVAC unit and compressor, and at least one check valve to allow vapor refrigerant flow into the indoor HVAC unit during a cooling mode and to prevent liquid refrigerant from exiting the vapor header when in a heating mode. A method of operating said system is also disclosed.

Abstract: A variable speed vapor compression system includes a compressor, a first heat exchanger connected to the compressor, an expansion valve connected to the first heat exchanger, a second heat exchanger connecting the expansion valve to the compressor, a fan associated with the second heat exchanger, and a controller operatively connected to one or more of the compressor and the fan. The controller is responsive to instructions to receive a target humidity range for a conditioned space, receive a sensed humidity for the conditioned space, compare the sensed humidity to the target humidity range, and vary speed of one or more of the fan and the compressor based on the comparison of the sensed humidity and the target humidity range. Methods of controlling humidity in conditioned spaces and computer program products are also described.

Abstract: A climate control outdoor unit comprises: a housing; a compressor having an electric motor; a refrigerant-air heat exchanger; an electric fan positioned to drive an air flow along an air flowpath across the refrigerant-air heat exchanger; and an inverter unit coupled to the electric motor to drive the electric motor. An additional air flowpath extends along the inverter unit to merge with the air flowpath.

Abstract: A comfort system outdoor unit with a heat exchanger coil and a fan in its top opening has an orifice structure and an insert registerable with the orifice structure to streamline the inward flow of air that passes over a lower end of the orifice structure. The insert may be fastened directly to the orifice structure lower end, or it may be installed so as to extend substantially from an upper edge of the coil to the orifice structure lower end.

Abstract: A coil support suitable for supporting a coil in a condensing unit includes a body and a protrusion extending from the body. The protrusion is configured to limit movement of the coil in at least one direction.

Abstract: A comfort system outdoor unit with an orifice structure and a fan in its top opening is provided with an insert to streamline the inward flow of air that passes over a lower end of the orifice structure. The insert may be fastened directly to the orifice lower end, or it may be installed so as to extend substantially from an upper edge of the coil to the orifice structure lower end.

Abstract: A filter media for physically separating particles of an abrasive media having a given mean average particle size from a chemical-mechanical polishing (CMP) slurry. The abrasive media has a particle size distribution including particles larger than the mean average particle size. The filter media is provided as being formed of at least one sheet of a porous membrane having a first and second surface defining a thickness dimension of the membrane therebetween, and having a plurality of generally cylindrical capillary pores formed through the thickness dimension sized effective to capture the particles larger than the mean average particle size. In service, the slurry is supplied to the first side of the filter media, and is passed through the media to the second side thereof such that at least a portion of the particles of the abrasive media larger than the mean average particle size is retained on the first side of the filter media.