Installing the VVT Bypass II
VVT Bypass II Controller
CARRIER CORPORATION ©2019
Installation and Start-up Guide
All rights reserved
11
7
Hold down the actuator damper release button and rotate the damper from fully closed to fully open. If the
damper traveled less than 90 degrees, do the following to set the actuator's fully open position:
a)
Loosen the appropriate stop clamp screw. See figure below.
b)
Move the stop clamp until it contacts the
edge of the actuator cam.
c)
Tighten the screw.
8
Hold down the actuator damper release button, rotate the damper to verify that it fully opens and closes, then
release the button.
9
10
Connect the tube provided to the controller's
High
connector. Using 1/4" poly tubing, connect the other end
to a duct static pressure probe (for example, Dwyer Instruments part #A-491, or the equivalent, for a 6”
length probe) located in the supply air duct downstream of the bypass damper, but before the first branching
of ductwork.
NOTE
Tubing should be at least 2 ft. (.61 meters) long for stable airflow measurement. The combined high
and low tubing length should not exceed 16.4 ft. (5 meters) in order to ensure accurate measurements.
Summary of Contents for VVT Bypass II
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