Positive shutoff for individual units of a central air...

Details Positive shutoff for individual units of a central air... Positive shutoff for individual units of a central air...

F - Mech Eng,Light,Heat,Weapons

15

B

121/73

F15B 13/02 (2006.01) F24F 11/053 (2006.01)

Patent

CA 1164286

Positive Shutoff for Individual Units of a Central Air Conditioning System Abstract In a central air conditioning system wherein air flow is regulated by inflation of bellows which are controlled by a bleed-type thermostat, simultaneous heating and cooling in a zone is prevented by disabling the bleed-type thermostat when the heating system is activated by closing a solenoid valve in the line to the thermostat whenever the heating system is activated.

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