Vav Box Control System

The simplest vav system incorporates one supply duct that when in cooling mode distributes approximately 55 f 13 c supply air.

Vav box control system. A vav box is integral to the ductwork connecting primary ductwork to secondary ductwork. A vav system with the proper controls and set up will help the building owner realize large savings in energy usage. Variable air volume vav is a type of heating ventilating and or air conditioning hvac system. Each zone is served by at least one vav box or more accurately a vav terminal.

Variable air volume systems variable air volume vav systems are the best way to zone especially in large buildings. The primary function of daikin s single duct terminal unit is to regulate conditioned air flow into an occupied zone in response to a control signal. A variable air volume vav box is a part of an hvac system in commercial buildings. In a vav system an air handling unit ahu cools or.

Historically pneumatic control was commonplace but electronic direct digital control systems are popular especially for mid to large size applications. This terminal unit is at the core of today s variable air volume vav systems. Prolon system hvac control system. Necc offers variable air volume controls vav boxes vav terminal units and controllers from nailor kmc kreuter johnson controls.

The most basic vav box consists of an enclosure with a small air valve damper that regulates the air flow in response to the room s thermostat. As vav terminals open the static pressure in the supply duct decreases and the blower increases air volume to maintain the static. With the ability to run the system on part load when not in use or to have a higher level of independent room control the vav box are used in a variety of locations including retail stores auditoriums office. Variable air volume control vav box factory authorized distributor with same day shipping from stock.

The system has a large air handling unit and multiple vav boxes allowing a far greater degree of control than a simpler system. Single duct vav boxes. There are many vav systems out there set up in different ways. The controllers are designed to monitor and control mechanical equipment such as packaged rooftop units split systems air handlers vav vvt zoning systems heatpumps boilers pumps vfd s.

The terminal is controlled by a temperature generally the bas system to open and close to provide more or less air to the zone. A vav terminal unit often called a vav box is the zone level flow control device it is basically a calibrated air damper with an automatic actuator the vav terminal unit is connected to either a local or a central control system. In many cases a variable air volume box is nothing but an assembly of a sheet metal box with a damper and controls inside a control panel.