Constant Volume Units
(Unit model number digit 15 = "1")
Adjust the motor sheave – close the sheave in for more fan RPM’s, open it for less.
2 Stage Airflow/Single Zone VAV (Symbio Cond Only)
(Unit Model Number Digit 15 = “D”)
Use the Symbio Phone App Settings, Indoor, Supply Fan Maximum Speed Setpoint and Supply Fan Minimum Speed Setpoint
2 Stage Airflow (Electromechanical Cond Only)
(Unit Model Number Digit 15 = “C”)
For 2-Speed VFD controlled units the desired maximum air flow (High Speed) is set by reprogramming parameter 6-15 on the VFD to the frequency value that best meets the RPM requirement as shown in the catalog fan tables.
TR-150 Procedure
The Main Menu accesses all parameters.
- Press the [Menu] key twice until indicator in display is placed above “Main Menu”.
- Press [▼] to 6-** Analog In/Out
- Press [Ok]
- Press [▼] to 6-1* Analog Input 53
- Press [Ok]
- Press [▼] to 6-15 Terminal 53 High Ref. / Feedback Value
- Press [Ok]
- Press [▲] [▼] to set/change.
- Press [Ok] to save changes.
- Press [Back] until you get to the main screen.
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WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.