G - Physics – 05 – D
Patent
G - Physics
05
D
341/27
G05D 23/24 (2006.01) F24F 3/044 (2006.01) F24F 11/00 (2006.01) G05D 23/13 (2006.01)
Patent
CA 1115380
ABSTRACT OF THE DISCLOSURE A temperature control is disclosed for a variable volume air conditioning system of the type wherein electric motor- operated air valve means are provide for varying the volume and relatively warm or relatively cool conditioned air supplied to a conditioned zone. The control includes zone thermostat means for producing an electrical error signal having a magnitude which varies in a predetermined relationship with respect to a deviation in zone temperature, and changeover circuit means for varying said predetermined relationship in order to accommodate changeover between heating and cooling, as sensed by duct temperature sensing means. The control further includes flow limit circuit means for imposing limits upon the maximum and minimum desired flow of con- ditioned air through the air valve means.
324255
Rentmeester Paul C.
Stanke Dennis A.
Fetherstonhaugh & Co.
Trane Company Of Canada Limited
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