41
Jonathan D Douglas, John R Edens, Carl L Garrett, Alan D Marble, Kevin B Mercer, Gary L Sapp, Kristin L Schaefer, Brett R Schneider, Steven A Tice: System and method of disabling an HVAC compressor based on a high pressure cut out. Trane International, Conley Rose P C, J Robert Brown Jr, February 14, 2012: US08113789 (1 worldwide citation)

A system and method is provided for monitoring a system pressure to infer whether a high pressure cut out (HPCO) switch has opened disabling a heating, ventilating, and air conditioning (HVAC) compressor. A system and method are also provided for determining whether to disable the HVAC compressor ba ...


42
Rakesh Goel, Ammar Kailani: Ultraviolet lamp with absorptive barrier. Lennox Manufacturing, July 28, 2009: US07566359 (1 worldwide citation)

A heating, ventilating and air conditioning (HVAC) system, comprising a heat exchanger plenum having a surface located therein that is susceptible to degradation upon exposure to light, and a light bulb located within the plenum. In one embodiment, the light bulb has a side directed toward the surfa ...


43
John W Clifford: Heating, ventilating, and air conditioning assembly for a vehicle. Delphi Technologies, Patrick M Griffin, July 6, 2004: US06758260 (1 worldwide citation)

A heating, ventilating, and air conditioning (HVAC) assembly having a housing defining first and second quadrants. An air mixing door is mounted to the housing downstream of an inlet and upstream of an outlet. The air mixing door has a first position directing substantially all of the air through th ...


44
John Walsh, Robert J Mowris: Fan controller. Kenneth L Green, Averill & Green, November 22, 2016: US09500386 (1 worldwide citation)

Apparatus and methods are disclosed for a fan controller. The fan controller determines HVAC system type and heating or cooling mode for gas furnace, heat pump, electric resistance, and hydronic heating, ventilating, and air conditioning (HVAC) systems. For gas furnace heating systems, the apparatus ...


45
Wagner Phillip Ryan, Chapman John Gilman Jr: Method and device for controlling apparatus having heating mode and cooling mode. Ranco Of Delaware, December 26, 2002: JP2002-372279 (1 worldwide citation)

PROBLEM TO BE SOLVED: To provide a handy interface (110) for a heating, ventilating, and air-conditioning(HVAC) device (104), which includes both of a heating action mode and a cooling action mode, to select the operation parameter of itself (104). SOLUTION: The interface (110) enables the input of ...


46
Federspiel Clifford C: Methods and systems for coordinating the control of hvac units. Federspiel Corporation, Federspiel Clifford C, RACZKOWSKI David Bet al, September 11, 2009: WO/2009/111489 (1 worldwide citation)

A control strategy for heating, ventilating, and air-conditioning (HVAC) units used to condition the environment in data centers and other commercial buildings such as retail stores with an open-plan design is provided to coordinate the operation of the actuators of the HVAC units. A supervisory con ...


47
Espinoza Ibarra Ricardo, Bresniker Kirk Michael, Barr Andrew Harvey: System and method for adjusting environmental condition of rack apparatus. Hewlett Packard Development Co, April 28, 2005: JP2005-115956 (1 worldwide citation)

PROBLEM TO BE SOLVED: To provide a system for adjusting environmental conditions of rack apparatuses capable of effectively managing conditions of multiple rack-mounted apparatuses.SOLUTION: This system 100 for adjusting environmental conditions of rack apparatuses has: a plurality of racks 110, etc ...


48
John Ivey, David L Simon: Integration of LED lighting with building controls. iLumisys, Fish & Richardson P C, February 28, 2017: US09585216

An LED-based light can be installed in a conventional light fixture. The LED-based light can include a sensor operable to output a signal indicative of whether an area of one or more of the rooms is in an occupied state or a non-occupied state, and the LED-based light can also include an LED control ...


49
Glenn Will Kowald, Darko Hadzidedic: Method of starting a HVAC system having an auxiliary controller. Lennox, Baker Botts L, February 21, 2017: US09574784

The disclosure provides, in one aspect, a method of starting a HVAC system is disclosed. In one embodiment, the method includes: (1) receiving an initiation signal at a main system controller of the HVAC system, (2) determining if main controller application information associated with the main syst ...


50
Glenn Will Kowald, Darko Hadzidedic: Integrated controller an HVAC system. Lennox, Baker Botts L, March 21, 2017: US09599359

The disclosure provides, in one aspect, an integrated controller for a HVAC system is disclosed. In one embodiment, the integrated controller includes: (1) an interface coupled to an auxiliary controller of the HVAC system and configured to communicate therewith, the auxiliary controller having an a ...



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