Critical Room Control CRC-FHM User Manual

Fume Hood Monitor and Controller – User Guide 14 © 2016 CRITICAL ROOM CONTROL
Constant Volume - General
Constant Volume Sensing uses direct feedback from the CRC-CLV to monitor and sum the volume
of air that is being exhausted. This value is displayed on the front screen and can be
communicated to the rooms control system to accurately calculate total exhaust.
Reduces or eliminates small fluctuations
in air volume
Set DP high value for valve (usually 2" WC)
Show / hide commissioning info on front screen
Set DP low value for valve (usually 0" WC)
Set K Factor for valve
Select "Constant Volume"
Select "cfm" or "l/p"
To “Zero” the exhaust valve’s voltage signal, first
shunt the high and low port on the valve’s
transducer, then press “Zero Valve” to set the
voltage input that corresponds with zero air flow.

Critical Room Control CRC-FHM Specifications

General

Brand	Critical Room Control
Model	CRC-FHM
Category	Controller
Language	English