Centrifugal Fans
Installation, Operation & Maintenance Manual
Direct-Fired Gas
Air Make-Up Units
IM-875
July 2021
This manual has been prepared to guide the users of direct-fired gas air make-up units in the proper installation, operation
and maintenance procedures to ensure maximum equipment life with trouble-free operation. For safe installation, startup and
operational life of this equipment, it is important that all involved with the equipment be well-versed in proper direct-fired air
make-up unit safety practices and read this manual. It is the user’s responsibility to make sure that all requirements of good
safety practices and any applicable safety codes are strictly adhered to. Because of the wide variety of equipment covered in
this manual, the instructions given here are general in nature. Additional product and engineering information is available at
www.aerovent.com.
Refer to the
Safety
section(s) in this manual prior to installing or servicing the air make-up unit. The most current version of this installation
and maintenance manual can be found on our website at www.aerovent.com/resources/im-manuals.
SAFETY NOTICE
REVIEW AMCA BULLETIN 410 PRIOR TO INSTALLATION
Table of Contents
Safety & Hazard Warnings ......................................................... 2
Receiving, Inspection & Unpacking ...........................................3
Unit Storage ................................................................................3
Handling ......................................................................................3
General Installation .....................................................................4
Rooftop/Curb Mounted ........................................................5
Pad Mounted .........................................................................5
Indoor/Suspended .................................................................5
Ductwork ...............................................................................5
Unit Installation (Gas Connections) ...........................................6
Piping .....................................................................................6
Sound Control .......................................................................6
Unit Installation (Electrical Connections) .................................. 7
Rigging Tips & Guidelines ...........................................................8
Rigging Weights ..........................................................................9
Installation Guidelines & Drawings ......................................10-13
Check, Test & Start-up Procedure ............................................ 14
Commissioning .......................................................................... 14
Maintenance .........................................................................14-16
Troubleshooting Guidelines ................................................. 17-19
Start-up Checklist and Report ..................................................20
Field Start-Up Sheet ..............................................................21-26
Maintenance Log ...................................................................... 27
Model AEHP
Model AEHV
