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KNP225FL/RFL Guardian/GuardianX NEMA 4 or 4X Series
Indoor/Outdoor Filter Fans

For general ventilating use only. Do not use these fans to exhaust hazardous or explosive material and vapors.
NOT ALL SYSTEMS ARE SUITABLE FOR UTILIZING OUTSIDE AIR.  To protect sensitive components against condensation an enclosure heater or closed-loop cooling is recommended. To protect sensitive components against corrosive elements closed-loop cooling is recommended.
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NEMA NEMA 4 or 4X
MAINTAINED

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ModelAirflow
Direction
NEMA
Rating
VoltageInput
Amps
Input
Watts
Max.
Airflow
CFM*
Unit
Airflow
CFM**
Noise
db(A)
Operating
Temp. °F
Approx. WeightSpare and
Replacement
Parts
Min.Max.Lbs.Kg.
Request RFQ linkKNP225FLIntakeNEMA 41151.8521044435069.1-4012223.510.7Order Parts
Request RFQ linkKNP225RFLExhaustNEMA 41151.8521044435069.1-4012223.510.7Order Parts
Request RFQ linkK2NP225FLIntakeNEMA 42300.9321344435069.1-4014023.510.7Order Parts
Request RFQ linkK2NP225RFLExhaustNEMA 42300.9321344435069.1-4014023.510.7Order Parts
Request RFQ linkK8NP225FLIntakeNEMA 448VDC2.4311644435069.1-415823.510.7Order Parts
Request RFQ linkK8NP225RFLExhaustNEMA 448VDC2.4311644435069.1-415823.510.5Order Parts
Request RFQ linkKNP225FLVIntakeNEMA 4X1151.8521044435069.1-4012223.510.7Order Parts
Request RFQ linkKNP225RFLVExhaustNEMA 4X1151.8521044435069.1-4012223.510.7Order Parts
Request RFQ linkK2NP225FLVIntakeNEMA 4X2300.9321344435069.1-4014023.510.7Order Parts
Request RFQ linkK2NP225RFLVExhaustNEMA 4X2300.9321344435069.1-4014023.510.7Order Parts
Request RFQ linkK8NP225FLVIntakeNEMA 4X48VDC2.4311644435069.1-415823.510.7Order Parts
Request RFQ linkK8NP225RFLVExhaustNEMA 4X48VDC2.4311644435069.1-415823.510.7Order Parts
*Fan airflow without filter and grille.
**NEMA Rated if installed with provided filter.

TECHNICAL DATA

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Model
Number:
KNP225FLKNP225RFLK2NP225FLK2NP225RFLK8NP225FLK8NP225RFLKNP225FLVKNP225RFLVK2NP225FLVK2NP225RFLVK8NP225FLVK8NP225RFLV
Airflow
Direction:
IntakeExhaustIntakeExhaustIntakeExhaustIntakeExhaustIntakeExhaustIntakeExhaust
NEMA
Rating:
NEMA 4NEMA 4NEMA 4NEMA 4NEMA 4NEMA 4NEMA 4XNEMA 4XNEMA 4XNEMA 4XNEMA 4XNEMA 4X
Voltage:11511523023048VDC48VDC11511523023048VDC48VDC
Input Amps:1.851.850.930.932.432.431.851.850.930.932.432.43
Input Watts:210210213213116116210210213213116116
Fan Airflow CFM*:444444444444444444444444444444444444
Unit Airflow CFM**:350350350350350350350350350350350350
Noise db(A):69.169.169.169.169.169.169.169.169.169.169.169.1
Operating Temp. Min. °F:-40-40-40-40-4-4-40-40-40-40-4-4
Operating Temp. Max. °F:122122140140158158122122140140158158
Weight Lbs.:23.523.523.523.523.523.523.523.523.523.523.523.5
Weight Kg.:10.710.710.710.710.710.510.710.710.710.710.710.7
Spare and Replacement PartsOrder PartsOrder PartsOrder PartsOrder PartsOrder PartsOrder PartsOrder PartsOrder PartsOrder PartsOrder PartsOrder PartsOrder Parts
*Fan airflow without filter and grille.
**NEMA Rated if installed with provided filter.
  • Standard Features
  • Accessories & Options
  • Performance
  • Arrangement
  • Similar Models
  • Documents
• Baked Powder Finish
• Integrated Fan Guards
• Integrated Sealing Gasket
• IP55 Filter Protection
• NEMA 4 or 4X Rating Maintained (if used with provided filter)
• Secure Mounting
• Six-Foot [1.8m] (minimum) 3-Wire Power Cord
• Stainless Steel Shell (NEMA 4X models)
For applications in corrosive or other hostile environments such as those requiring Internal Corrosion Resistant Coatings, especially where chemical/moisture combinations are present.
• UL shielded ball bearing motors
• Washable, Reuseable Filter
• UL/CUL Listed

• Filter-Hood Assemblies (Recommended) for KNP180/KNP225
For all NEMA 4 Units order Part Number KNPA225FL* For all NEMA 4X Units order Part Number KNPA225FLV* *KNPA225FL(V) is the Filter-Hood Assembly part number for all K_NP180FL(V) and K_NP225FL(V) Filter Fans.
• Other voltages and frequencies
• Replacement Filters for all models order Part Number 0429-01-06
• Reversed Airflow Direction
To order reversed airflow, add "R" after series number. Example: KNP180RFL
• T-Temperature Control (90°F) (AC units only)
• B-Temperature Alarm (130°F)

KNP225FL Filter Fans performance chart
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KNP225FL Filter Fans general arrangement drawing
Dimensions, inches [mm], are for reference only and subject to change.

Dimensions, inches [mm], are for reference only and subject to change.
Similar Models for this produxt family are not currently available. Please contact Customer Service for more information.
  • Data Sheet
    Guardian Series Filter Fan KNP225 Data Sheet [360Kb]
  • Installation Instructions
    Guardian Series Filter Fan KNP180/225 Installation Instructions [92Kb]
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  • Operator's Manual
    Guardian Series Filter Fan KNP180/225 Operator's Manual [391Kb]
  • Wiring Diagram (Point-to-Point)
    Guardian Series Filter Fan KNP180/225 230 Volt Wiring Diagram [38Kb]
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    Guardian Series Filter Fan KNP180/225 Wiring Diagram [40Kb]

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