HVAC and BEMS

Supply Air

Supply Air Temperature

Smoke Damper

A measure of seasonal or annual efficiency of a central air conditioner or air conditioning heat pump.  It takes into account the variations in temperature that can occur within a season and is the average number of Btu of cooling delivered for every watt-hour of electricity used by the heat pump over a cooling season.

Any device that receives a signal or stimulus (such as heat, pressure, light, or motion, etc.) and responds to it in a distinctive manner.

A thermostat that can be set to automatically lower temperatures in an unoccupied house and raise them again before the occupant returns.

An input variable which sets the desired value of the controlled variable.

A collection of computer programs, procedures, and documentation that perform some tasks on a computer system.

A movable or fixed heater used to heat individual rooms.

A SPDT switch has one common terminal and can connect to one of two other terminals.  This allows it to control a single circuit with two different outputs.