Vav Box Control Points

This terminal unit is at the core of today s variable air volume vav systems.

Vav box control points. When connected to the metasys network the vav provides all point and control information to the rest of the network. They are specifically designed for precise air delivery throughout the entire operating range regardless of the installed inlet conditions. Can be reset based on vav boxes 100 75 35 62 speed 85 1 000 cfm 750 cfm 350 cfm 620 cfm. Single duct vav boxes.

The devices communicate through an n2 bus. As ascs are generally designed to meet a specific function whether it be control of a packaged rooftop unit fan coil unit or vav box the focus of this points list is more so on the controller itself which isn t to say that the input output devices aren t important. Control algorithms reach set points faster allowing occupants to enjoy a more comfortable environment variable air volume vav is a type of heating ventilating and or air conditioning hvac system. Knowing vav box damper position is extremely helpful in implement ing static pressure reset which can save as much as 50 percent of fan energy 3 continued from page 43.

Another vav box control point one should consider requiring is vav box damper position either modulating analog output or floating two digital outputs. Precise zone control model tss terminals provide variable air volume vav control beyond the typical single duct box. They also offer improved space comfort and flexibility for a. The simplest vav system incorporates one supply duct that when in cooling mode distributes approximately 55 f 13 c supply air.

Variable air volume vav box controller vav svx07 en tracer uc400 programmable bacnet controller for vav units vav svp01 en vav vv550 lontalk controller vav svx01 en vav ucm 4 2 iom vav svx02 en varitrane pneumatic controls receivingandhandling these units are shipped completely assembled with the. Vav system damper control control points m m m control all dampers with one signal simpler approach ao control point. The vav box regulates the volume of the air to the zone by opening or closing a damper therefore controlling the volume of air in a specific zone. The next column however is there to simply indicate the type of point.

The primary air comes from a central vav air handler through the primary duct system and the vav box distributes the air into a secondary duct system with the zone it controls. Vav system static pressure reset space temp space temp. You may use the vav as a standalone controller or connected to the metasys network through a network control module ncm or companion system.