Control method and system for controlling temperatures

Details Control method and system for controlling temperatures Control method and system for controlling temperatures

1993-01-22

1994-04-19

Chambers, A. Michael

Heat exchange

With alarm, indicator, signal, register, recorder, test or...

Remotely controlled inspection means

165 22, 236 1B, 236 1C, 236 493, F24F 300

Patent

active

053037677

ABSTRACT:
A system and method for controlling the operation of a Heating, Ventilation and Air Conditioning (HVAC) system for use primarily in a building having more than two controllable temperature zones. Rooms having a priority for heating or cooling are identified as such in a controller. The controller sums Temperature Differences from all controlled spaces and causes the HVAC system to operate in a first mode (e.g. heating) if the sum has a first relationship to a preselected value (e.g. sum>=0) and causes the HVAC system to operate in a second mode (e.g. cooling) otherwise.

REFERENCES:
patent: 4200910 (1980-06-01), Hall
patent: 4284126 (1981-08-01), Dawson
patent: 4830095 (1989-05-01), Friend
patent: 5024265 (1991-06-01), Bucholz et al.

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