Control system and method for multistage air conditioning...

Details Control system and method for multistage air conditioning... Control system and method for multistage air conditioning...

2005-10-25

2008-11-25

Jiang, Chen-Wen (Department: 3744)

Automatic temperature and humidity regulation

Furnace controlled

Furnace controlled responsive to combustion products...

C236S0150BG, C236S04600F, C236S011000, C126S11600A, C432S053000

Reexamination Certificate

active

07455238

ABSTRACT:
A controller and method for operating an HVAC system including an air conditioning unit, such as a gas furnace, having three stages of heat output and responsive to signals from a single stage or two stage thermostat. The W1, W2, and W3inputs to the controller may be configured for receipt of a single stage control signal simultaneously or paired as W1, W2or W2, W3. The system controller is configured to determine which input connection arrangement is in existence and operates the system in mock one stage or mock two stage modes depending on the signals received from a single or two stage thermostat, respectively.

REFERENCES:
patent: 4251025 (1981-02-01), Bonne et al.
patent: 5628201 (1997-05-01), Bahel et al.

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