Control Box (Vari-Green: Synrm, Induction With Vfd) - Greenheck USF Installation, Operation And Maintenance Manual

Control Box (Vari-Green: SynRM, Induction with VFD)

VG - HOA
NEMA-3R
Disconnect
Incoming
Power
CONTROL BOX
See HOA IOM for
connection details
Ship loose control box
Motor wires supplied by others
XHHW motor wire is recommended when VFD installed in distances greater than 25 feet from motor.
The Induction motor control box configuration has multiple control options:
1. Hand/Off/Auto
2. Remote Dial
3. Touch Remote
4. Constant Pressure
8 USF Motors and Controls
For motor technologies Vari-Green SynRM, and Induction with VFD,
a control box would be provided.
This control box can be mounted and wired (arrangement 4 only) or
shipped loose (all arrangements, induction only).
The control box features a NEMA-3R disconnect and Vari-Green
Hand/Off/Auto (HOA) controller.
Incoming power should be wired through the side of the control box
and terminated at the provided terminal blocks. See wiring diagram
included in fan submittal.
For ship loose control boxes, motor wiring shall be provided by
others.
L1
L2
L3
HOA
Field installed wires
supplied by others
5. Constant Airflow
6. IAQ – Temp / Humidity
7. IAQ – VOC
NOTE
®