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Category: Glossary

Setpoint

The temperature or pressure at which a controller is set for desired comfort level.

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Sensor

Any device that responds to a change in the conditions being measured, permitting the condition to be controlled.

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Sensible Heat

That heat which, when added to or taken away from a substance, causes a change in temperature.

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PVC

Polyvinyl chloride; a type of plastic. In recent years, PVC has been replacing traditional building materials such as wood, concrete and clay in many areas.

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PSIG

Pounds per square inch gauge.

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Refrigerant

A chemical substance that produces a refrigerating effect while expanding and vaporizing.

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Package Unit

A heating and cooling system contained in one outdoor cabinet. This package unit is typically installed on the roof, beside, or sometimes in the attic of a home.

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OEM

Original equipment manufacturer.

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