4.3 ANALOG OUTPUT SIGNALS
Airflow:
Available on connector J1, terminals AO1+ and AO1- or AO2+ and AO2-. The full scale output is equal to
Max flow as inputted into the Vari-Green transmitter on the Flow Configuration submenu.
Temperature:
Available on connector J1, terminals AO1+ and AO1- or AO2+ and AO2-. The temperature analog
output has a fixed scale of -20º F to 140º F.
SECTION 5.0: Maintenance / Inspections /
Troubleshooting
5.1 MAINTENANCE / INSPECTIONS
The Vari-Green
system h
as been designed to operate in most HVAC applications without the need
for periodic maintenance or calibration. In some applications, it may be necessary to perform a visual
inspection of the probe and sensors, and if necessary clean them using a soft, small brush and/or
compressed air to remove any accumulated particulate or debris.
5.2 TROUBLESHOOTING
The Vari-Green
system is i
ntended to provide long-term, trouble-free operation. In the event there is an
issue with the Vari-Green measurement system, or the BMS or the controller ceases to receive valid
airflow and/or temperature signals, make certain the following have been checked and confirmed:
• The power wiring is securely connected to the proper terminals and is providing the intended 24V AC/
DC power.
• The signal wiring is securely connected to the proper terminals.
• The probe-to-probe and probe-to-transmitter cables and connections are properly connected and
secure.
• Power cycles the transmitter.
If after following the above troubleshooting steps, the Vari-Green system continues to operate improperly,
contact Greenheck for technical assistance.
Technical Support:
E-mail: [email protected] or
Phone: 1-800-717-6540
482599 • Vari-Green® Transmitter IOM, Rev. 3, October 2018
Copyright 2018 © Greenheck Fan Corporation
10
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications
without notice.
Product warranties can be found online at Greenheck.com, either on the specific product page or in the literature
section of the website at Greenheck.com/Resources/Library/Literature.
®
Phone: 715.359.6171 • Fax: 715.355.2399 • Parts: 800.355.5354 • E-mail: [email protected] • Website: www.greenheck.com
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