HVAC Delivery Systems Control of Heating & Cooling

Flashcards covering key vocabulary and concepts from HVAC Delivery Systems, focusing on controls for heating and cooling.

Heating and Cooling loads

The amount of heat energy required or removed from a space to maintain a preferred temperature.

Control device

A device, such as a thermostat, used to measure load conditions for heating or cooling.

Air-handling unit

A central system component that manages the supply of heated or cooled air to spaces.

Zoning

The practice of controlling temperature in different areas using separate thermostats.

Direct Digital Control (DDC)

A modern control system using micro-processors to manage HVAC functions based on input signals.

Pneumatic controls

Older HVAC control systems that utilize compressed air for operation.

Variable Air Volume (VAV) system

A system that adjusts the amount of air supplied based on the temperature needs of a space.

Reheat terminals

Components that add heat to chilled air before it is delivered to the space.

Variable Refrigerant Flow (VRF) system

A refrigerant system that can serve multiple indoor units, allowing for zoning in climate control.

Actuator

A device that provides physical control, often used with dampers and valves in HVAC systems.