DANGER
Always disconnect power before working on or
near a unit. Lock and tag the disconnect switch or
breaker to prevent accidental power up.
CAUTION
When servicing the unit, variable frequency drives
(VFD) may be hot enough to cause pain or injury.
Allow motor to cool before servicing.
General Safety Information
Only qualified personnel should install this unit.
Personnel should have a clear understanding of these
instructions and should be aware of general safety
precautions. Improper installation can result in electric
shock, possible injury due to coming in contact with
moving parts, as well as other potential hazards. Other
considerations may be required if high winds or seismic
activity are present. If more information is needed,
contact a licensed professional engineer before moving
forward.
1. Follow all local electrical and safety codes, as well as
the National Electrical Code (NEC), the National Fire
Protection Agency (NFPA), where applicable. Follow
the Canadian Electrical Code (CEC) in Canada.
2. Do not allow the power cable to kink or come in
contact with oil, grease, hot surfaces, or chemicals.
Replace cord immediately if damaged.
3. Verify the power source is compatible with the
equipment.
Table of Contents
General Safety Information ......................1
Receiving, Handling and Storage .................2
Component Checklist - Electrical ...............2
System Components ...........................3
Wiring Installation .............................3
Fan Operation - Single Fan
Set Point and Minimum Variables ...............4
Defined Modes .............................4
VGN Technology Control Flow Chart ............5
Fan Operation - Multiple Fans, No Staging
Set Point and Minimum Variables ...............6
Defined Modes ........................... 6-7
VGN Technology Control Flow Chart ............8
Fan Operation - Multiple Fans, With Staging
Set Point and Minimum Variables ...............9
Defined Modes ............................10
VGN Technology Control Flow Chart ...........11
Factory-Supplied Variable Frequency Drive
System Diagram .............................12
Wiring Diagram ..............................13
Communication BACnet® and LonWorks® Protocol . 14
Start-Up Procedure - Electrical Controls ..........15
System Test and Balance for VGN ...............16
Nozzle Velocity Adjustment .....................16
Customer-Supplied Variable Frequency Drive
System Diagram .............................18
Wiring Diagram ..............................19
VGN Nozzle Controller Intro. and Tutorial ....... 20-22
Communication ..............................23
Start-Up Procedure - Electrical Controls ..........24
System Test and Balance for VGN ...............25
Nozzle Velocity Adjustment .....................25
Troubleshooting ..............................26
Maintenance ................................27
Electrical Replacement Parts ...................27
Our Commitment .............................28
VFD Controller Nozzle Controller
Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble,
install, operate or maintain the product described. Protect yourself and others by observing all safety
information. Failure to comply with instructions could result in personal injury and/or property damage!
1
VGN Technology
®
®
Document 476072
Vektor
®
Laboratory Exhaust
with Variable Geometry Nozzle (VGN) Technology
Electrical Controls Information
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