Mixed air temperature sensor bypass
First Claim
1. A circuit for providing a mixed air temperature signal, the circuit comprising:
- a temperature input to an economizer controller;
an air temperature sensor;
a false air temperature device; and
a switching device comprising;
a switch, the switch configured to;
connect the temperature input to the air temperature sensor when the switch is in a first state; and
connect the temperature input to the false air temperature device when the switch is in a second state; and
a switch actuating device, the switch actuating device configured to;
place the switch in the first state when a mechanical cooling signal is not sent; and
place the switch in the second state when the mechanical cooling signal is sent.
1 Assignment
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Accused Products
Abstract
In an embodiment, a circuit for providing a mixed air temperature signal is provided. The circuit has a temperature input to an economizer controller, an air temperature sensor, a false air temperature device, and a switching device. The switching device has a switch and a switch actuating device. The switch connects the temperature input to the air temperature sensor when the switch is in a first state. The switch connects the temperature input to the false air temperature device when the switch is in a second state. The switch actuating device places the switch in the first state when a mechanical cooling signal is not sent. The switch actuating device places the switch in the second state when the mechanical cooling signal is sent.
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Citations
8 Claims
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1. A circuit for providing a mixed air temperature signal, the circuit comprising:
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a temperature input to an economizer controller; an air temperature sensor; a false air temperature device; and a switching device comprising; a switch, the switch configured to; connect the temperature input to the air temperature sensor when the switch is in a first state; and connect the temperature input to the false air temperature device when the switch is in a second state; and a switch actuating device, the switch actuating device configured to; place the switch in the first state when a mechanical cooling signal is not sent; and place the switch in the second state when the mechanical cooling signal is sent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification