Carrier VAV Zone II, Руководство по установке и запуску

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Troubleshooting
VAV Zone II Controllers CARRIER CORPORATION ©2019
Installation and Start-up Guide All rights reserved
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2
Short the Format Short pins jumper’s pins and maintain the short for steps 3 and 4.
3
Insert the power screw terminal connector into the VAV Zone II's power terminals.
4
Continue to short the jumper until the Error LED flashes three times in sync with the Run LED.
5
Remove the short.
To replace the battery
If the VAV Zone II experiences a power outage and the control program stops functioning, replace the battery.
You need to replace the battery if the voltage measures below 2.9 volts when the controller is not powered.
1
Verify that the VAV Zone II's power is on.
CAUTION If the controller's power is not on when replacing the battery, your date, time, and trend data
will be lost.
2
Remove the VAV Zone II's cover.
3
Remove the battery from the controller, making note of the battery's polarity.
4
Insert the new battery, matching the battery's polarity with the polarity indicated on the controller's cover.
5
Replace the VAV Zone II's cover.
6
Download the VAV Zone II.
To clean the airflow sensor orifice
In less than .02% of installations, small particulates (micron/submicron-level) can build up in the airflow sensor's
internal orifice causing airflow restriction. Symptoms of airflow restriction are:

Diffuser noise increases over time

Space overcools at minimum airflow

Frequency of dampers opening to maintain flow setpoint increases over time

AHU fan speed increases over time
To check for these symptoms, set up trending of:

Damper position to look for long term increase

AHU fan speed for maintaining static pressure
If you see these symptoms, you should clean the flow sensor.