CAUTION
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DIBOHFE TQFFEQSFTTVSFUFNQFSBUVSFFUDDPOTVMU
manufacturer to determine if the unit can operate
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Supply Fan (Plenum Type)
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NBZPQUJPOBMMZIBWFBSFMJFGBJSCMPXFSXIJDIJTSFGFSSFE
UPBTBOFYIBVTUCMPXFSJOUIJTEPDVNFOU&GmDJFOUGBO
QFSGPSNBODFDBOCFNBJOUBJOFECZIBWJOHUIFDPSSFDU
offset.
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.BJOUFOBODF.BOVBMTIJQQFEXJUIUIJTVOJUGPSBEEJUJPOBM
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plenum fan.
Start-Up Components
Fan
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Inlet
Cone
Wheel
Offset
Offset:
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from the shaft and moving the wheel
to the desired position along the shaft.
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and the wheel should
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a smooth feel to the
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one component to the
other.
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Fan
Offset
JODIFT
Tolerance
JODIFT
3737&
4VQQMZ
5/32
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5/32
3737&
4VQQMZ
&YIBVTU
3737&
4VQQMZ
&YIBVTU
Supply/Exhaust Fan
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UZQF'BOTQFFEJTDPOUSPMMFECZB7'%XIJDIJOUVSO
JTDPOUSPMMFECZUIF%%$DPOUSPMMFSPSCZBOFYUFSOBM
TJHOBM.PUPSTQFFEXJMMCFTFUPOUIF7'%EVSJOH
UIFVOJU5FTUBOE#BMBODFCVUBGUFSUIBUUIF7'%XJMM
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amperage rating shown on the motor nameplate when
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installed except the control center door.
Vibration
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or component failure. The most common sources of
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.BOZPGUIFTFDPOEJUJPOTDBOCFEJTDPWFSFECZDBSFGVM
PCTFSWBUJPO3FGFSUPUIF5SPVCMFTIPPUJOHTFDUJPOPG
UIJTNBOVBMGPSDPSSFDUJWFBDUJPOT*GPCTFSWBUJPODBOOPU
MPDBUFUIFTPVSDFPGWJCSBUJPOBRVBMJmFEUFDIOJDJBO
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consulted.
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and noise is transmitted
to other parts of the
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FGGFDUUIFVTFPGnFYJCMFDPOOFDUPSTJTSFDPNNFOEFE
Vibration Causes
Off axis or loose components
Drive component unbalance
Poor inlet / outlet conditions
Foundation stiffness
Discharge Air Temperature Sensor
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4FOTPSUIBUJTUPCFmFMEJOTUBMMFEQSJPSUPVOJUTUBSU
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diameters downstream of the heat exchanger. The
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other sensors and low voltage
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the low voltage terminal strip in
the control center. The discharge
air sensor is shipped loose
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connection locations.
Typical Discharge Air
Temperature Sensor
Fan Wheel Rotation Direction
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the wheel from the drive side and should match the
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*GUIFXIFFMJTSPUBUJOHUIFXSPOHXBZEJSFDUJPODBOCF
SFWFSTFECZJOUFSDIBOHJOHBOZUXPPGUIFUISFFFMFDUSJDBM
MFBET$IFDLGPSVOVTVBMOPJTFWJCSBUJPOPSPWFSIFBUJOH
PGUIFCFBSJOHT3FGFSUPUIF5SPVCMFTIPPUJOHQPSUJPOPG
UIJTNBOVBMJGBQSPCMFNEFWFMPQT
17
Packaged Rooftop Ventilator
®
