Greenheck Fan Make-Up Air Unit VSU ユーザーズマニュアル

1

Installation, Operation and Maintenance Manual

Please read and save these instructions. 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! Retain instructions for future reference.

®

Part #457831

VSU Make-Up Air Unit

Model VSU

Installation, Operation and Maintenance Manual

Please read and save these instructions. 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! Retain instructions for future reference.

®

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 Electric Code 
(CEC) in Canada.

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, motor may be hot enough 

to cause pain or injury. Allow motor to cool before 

servicing.

General Safety Information

2.  The rotation of the wheel is critical. It must be 

free to rotate without striking or rubbing any 
stationary objects.

3.  Motor must be securely and adequately 

grounded.

4.  Do not spin fan wheel faster than the maximum 

cataloged fan rpm. Adjustments to fan speed 
significantly affects motor load. If the fan RPM is 
changed, the motor current should be checked 
to make sure it is not exceeding the motor 
nameplate amps.

5.  Do not allow the power cable to kink or come 

in contact with oil, grease, hot surfaces, 
or chemicals. Replace cord immediately if 
damaged.

6.  Verify that the power source is compatible with 

the equipment.

7.  Never open blower access doors while the fan is 

running.

FOR YOUR SAFETY

FOR YOUR SAFETY

WARNING