Single-duct terminal units control the volumetric flow of supply air to the space to maintain the zone temperature at setpoint. These units are generally applied in cooling-only VAV zones that require no heat during occupied hours. If local zone heat is necessary it can be provided either remotely (for example, perimeter heat) or by terminal reheat (either electric or hot water coils).
Low angle forest with dense foliage
Features
Interlocking panel design provides the most rugged VAV unit available.
Metal encapsulated edges limit fiberglass insulation erosion into the airstream.
Averaging flow ring sensor accurately measures airflow at any inlet duct condition.
Pneumatic, electronic, or digital controls available.
Small walking bridge over river in the fall
Features
Compatible with most controllers for field or factory installation.
Digital controls allow Tracer™ building management system interface for Integrated Comfort™ systems (ICS) capability.
Cooling only (VCCF), hot water reheat (VCWF), or electric reheat (VCEF) units available.
Dual-duct terminal units are used in a special type of air distribution system where the main system has both warm air and cold air separately ducted to each terminal unit