Installing the Zone Ctrl II
Zone Ctrl II and
VAV Zone II Secondary Duct Installation and Start-up Guide
CARRIER CORPORATION ©2019
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To connect duct tubes to the flow sensors
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.
For a single duct system
1
Turn off the Zone Ctrl II's power.
2
Connect the tube to the Zone Ctrl II's
High
connector and the
Low
connector. Then connect those tubes to the
duct's high and low pressure tubes. Avoid sharp bends in the tubing.
For a dual duct system
1
Follow the single duct procedure above to connect the Zone Ctrl II to the cold duct's tubes.
2
To connect the VAV Zone II Secondary Duct to the second duct's tubes, turn off the VAV Zone II Secondary
Duct's power.
3
Connect the secondary tubes to the duct's high and low pressure tubes. Avoid sharp bends in the tubing.
