Product Specification Guide
Vari-Green Control – Constant Pressure

Control to be a packaged constant pressure control designed to regulate fan speed based on demand. Control shall include a Proportional Integral Derivative (PID) feedback loop and shall have all components prewired to labeled terminal strips for easy wiring.  System shall include the appropriate pressure tap and preset pressure transducer. Fan shall be direct drive including an electronic commutation (EC) Vari-Green motor. Control package shall be Vari-Green Constant Pressure Control. 

Indoor installations shall include pressure tap (duct or room) and control box with integral pressure transducer. 

Outdoor installations shall include duct pressure tap, pressure transducer, and control box.  Control box shall be pre wired and in a NEMA-3R weather tight enclosure for mounting outdoors near the fans location.