FloAire DMUA User Manual
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TABLE OF CONTENTS
WARRANTY .................................................................................................................................................. 3
INSTALLATION ............................................................................................................................................. 4
Mechanical ................................................................................................................................................ 4
Site Preparation .................................................................................................................................... 4
Roof Mounting ...................................................................................................................................... 4
Wall Mounting ....................................................................................................................................... 5
Curb and Ductwork ............................................................................................................................... 5
Duct Routing Examples ........................................................................................................................ 6
Up-Blast Roof Mount Installation .......................................................................................................... 6
Up-Blast Wall Mount Installation .......................................................................................................... 7
Up-Blast Through Wall Mount Installation ............................................................................................ 8
Down-Blast Installation ......................................................................................................................... 8
Typical Hinge Kit
– Centrifugal Upblast ................................................................................................ 9
Typical Grease Box Installation ............................................................................................................ 9
Up-Blast Utility Set Installation ........................................................................................................... 10
Up-Blast Utility Set Inlet Options ........................................................................................................ 10
Up-Blast Utility Set Discharge Extension OptionUp-Blast Curb Mount Utility Set Installation ........... 11
Up-Blast Curb Mounted Utility Set Hinging Instructions ..................................................................... 12
Up-Blast Curb Mounted Utility Set Discharge Extension Option ........................................................ 13
Up-Blast Curb Mounted Utility Set Rain Cap Option .......................................................................... 13
Square Inline Mounting Bracket Detail ............................................................................................... 14
Square Inline Mounting Configurations .............................................................................................. 14
Square Inline Discharge Options ........................................................................................................ 15
Square Inline Discharge Configurations ............................................................................................. 15
Electrical ................................................................................................................................................. 16
Copper Wire Ampacity ....................................................................................................................... 16
PSC (Permanent Split Capacitor) Motor Speed Control .................................................................... 17
ECM (Electronically Controlled Motor) Speed Control ....................................................................... 17
Motorized Damper .............................................................................................................................. 17
Fan to Building Wiring Connection ..................................................................................................... 18
OPERATION ............................................................................................................................................... 19
Start Up ................................................................................................................................................... 19
Special Tools Required ...................................................................................................................... 19
Start Up Procedure ............................................................................................................................. 19
Pulley Setscrew Torque ..................................................................................................................... 19
Pulley Alignment ................................................................................................................................. 20
Proper Belt Tension ............................................................................................................................ 20
Pulley Combination Chart ................................................................................................................... 21
Troubleshooting ...................................................................................................................................... 22
Troubleshooting Chart ........................................................................................................................ 22
MAINTENANCE .......................................................................................................................................... 23
General Maintenance ............................................................................................................................. 23
Bearing Grease Charge ..................................................................................................................... 23
Bearing Grease Type ......................................................................................................................... 23
2 weeks after startup .............................................................................................................................. 24
Every 3 months ....................................................................................................................................... 24
Yearly ...................................................................................................................................................... 24
Start-Up and Maintenance Documentation ............................................................................................ 25
Job Information ................................................................................................................................... 25
Fan Unit Information ........................................................................................................................... 25
Maintenance Record .......................................................................................................................... 25
Factory Service Department ............................................................................................................... 28