Manual 2100-764
Page
3 of 8
Description
The QCRV commercial room ventilator (CRV) is
designed to be used with Bard QC501 series chilled
water air conditioners. It is an electromechanical
ventilation system designed to provide fresh air to
meet indoor air quality standards with built in exhaust
provisions.
FIGURE 1
Adjusting OCC Potentiometer on CRV Control Board
QCRV-4
The QCRV-4 has a spring return damper blade. If vent
operation is no longer required or in the event of a
power loss, the blade will spring return close. Adjusting
the OCC potentiometer on the CRV control board will set
the maximum blade position (see Figure 1) Using the
graphs, set the blade position to deliver the proper CFM.
Adjust blade using the
OCC potentiometer.
MIS-4363
