Fan Powered Vav Box Diagram

This was referred to as a cooling only box and was connected to the primary duct and led to a zone within the floor of a multi story building.

Fan powered vav box diagram. So in the sequence of operation for a fan powered vav box and a non fan powered vav box would include closing the damper to allow minimal air from the air handler and at the same time energize the fan contactor so that the fan in the vav box comes on and pulls warmer air from the plenum. Fan powered variable air volume terminals are a popular choice for heating and cooling perimeter zones. In a parallel flow terminal the fan is outside the primary airstream and runs intermittently when the primary air is off. Vav 101 control assembly label all price fan powered terminal units are tagged with a.

This is the most basic type of vav box. Vav box types fan powered and shut off vav boxes waiting to be installed cool only single duct series vav non fan powered the most basic vav box i have ever seen was simply a box with a damper inside it that was controlled by an actuator. Looking for constant high airflow rates. Interlocking panel design provides the most rugged vav unit available.

Fan powered terminal units are not intended for use as temporary heat or ventilation sources during building construction. Manual installation operation maintenance fan powered constant volume terminals fdc fdclp2 v100 issue date. Parallel flow or variable volume fan powered terminals operate in two distinct modes. Variable volume constant temperature when handling high cooling loads.

Page 51 wiring diagrams figure 23 fan powered control boxes fan powered control box fan powered control box with electronic or ddc controls with pneumatic controls line voltage duct pressure switch option line voltage or from heater terminal or. And constant volume variable temperature when heating or handling light cooling loads. Digital series fan powered terminal. Varitrane vav series air conditioner pdf manual download.

There are three types of vav boxes. The traditional vav box consists of vav box with an integral damper and is controlled by thermostat. The fan powered vav is built the same as the traditional but it also contains a fan which is triggered when the area. Two casings for easy design layout flip for right or left hand mount.

Series fan powered vav tcs download engineering guide johnson controls series fan powered variable air volume terminals are available from 100 to 4600 cfm offering tremendous flexibility to meet a wide variety of hvac systems design requirements. Traditional fan powered and vav with reheat. Energy efficient fan motor permanent split capacitor type mounted with vibration isolators. They are common in premium vav systems and in applications such as conference rooms cafeterias etc.

Johnson controls parallel fan powered variable air volume terminals are available from 100 to 4100 cfm providing flexibility in performance ranges to meet a multitude of system design requirements. Single duct and fan powered units.