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Integrity Series 21 NEMA 4/4X Switchable
Air-Cooled Panel-Mounted Air Conditioners

These products are discontinued and no longer in production.

We recommend the GuardianX Series as a possible alternative.

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NEMA TYPE 12
MAINTAINED
Select Model Type

Electrical (Volts/Hz):

ModelNEMA
Rating
UL/CUL
Listed or
Recognized
BTU/H
Capacity
95/95
Rating
BTU/H
Ambient Temp.VoltsHzRunning
Amps
Approx.
Weight
°F°C
Max./Min.Max./Min.lbskg
K2NA4C3P21L512 & 4/4XListed30001940131/055/-17230504.67635
Rating shown is for operation at maximum ambient temperature.

TECHNICAL DATA

ModelNEMA
Rating
BTU/H
Capacity
Volts/Hz
K2NA4C3P21L512 & 4/4X3000230/50V, 50Hz
UL/CUL Listed or Recognized: Listed
95/95 BTU Rating: 1940
Ambient Max./Min. °F: 131/0
Ambient Max./Min. °C: 55/-18
Running Amps: 4.6
Approx. weight: 76 lbs. (35 kg)
Rating shown is for operation at maximum ambient temperature.
  • Standard Features
  • Accessories & Options
  • Airflow Diagram
  • Performance
  • Arrangement
  • Similar Models
  • Documents
• Built-in Condensate Evaporator
Built-in Condensate Evaporator eliminates need for draining condensate under normal operating conditions. May not be adequate in extremely high humidity with open or leaky enclosure. Overflow condensate drain fitting and hose are included.
• CFC-Free Refrigerant
CFC-free R134a Refrigerant is used
• Condenser Impeller Speed Controller
A solid state sensor reacting to the condenser coil temperature modulates the condenser impeller between minimum and maximum speed based on the coil temperature. This reduces noise levels, fan cycling, compressor cycling and prevents the unit from freezing.
• EMI/RFI Suppressor
EMI/RFI Suppressor minimizes transient line spikes during on/off cycling.
• Filter
All Kooltronic filters consist of a multi-layer grid of sturdy corrugated aluminum, securely held in a one-piece aluminum frame. Filters are required wherever air is drawn into an electronics enclosure or related cooling equipment to keep internal parts as clean as possible. A non-drying adhesive coating traps a high percentage of particulate matter. These filters are reusable, they may be washed and recoated with the appropriate filter recoating adhesive. Replacement filters are available and can be ordered online at kooltronic.com/spareparts.
• Internal Corrosion Protection
NOTE: Internal Corrosion Protection is a Standard Feature on NEMA 4X models only. This protection for the refrigeration system consists of an air cured coating applied to the brazed joints on the condenser side, providing a degree of protection from corrosive environments. This coating will withstand 1000 hours of salt spray per the ASTM B 117 test method. Also see Stainless Steel Cabinet or Integrity NEMA 4/4X Air Conditioners. NOTE: Severe operational environments such as waste water treatment and salt spray are likely to cause corrosion failure over a period of time regardless of coating. Warranty: Corrosive conditions may affect the warranty coverage. Consult factory for warranty limitations in corrosive environments. NOTE: For additional corrosion protection options, contact factory.
• Low Temperature Control Thermostat
Electronic Thermostatic Low Temperature Control prevents over-cooling and provides energy-efficient operation.
• NEMA 12, 3R & 4/4X Ratings Maintained (UL50)
All units are fully gasketed for tight, leakproof installation, in compliance with the NEMA 4/4X Enclosure Ratings.
• Stainless Steel Shell
For applications in corrosive or other hostile environments such as those requiring Internal Corrosion Resistant Coatings, especially where chemical/moisture combinations are present.
• UL/CUL Listed

• Cooling Effect Detector
A thermostat is mounted inside the cabinet and attached to a sensor in the warm air return. When the air temperature increases to the set point, a signal is sent to a terminal block. User-installed wiring from the terminal block to local and/or remote warning devices (light, bell, siren, etc.) can be for normally open or closed operation.
• Enclosure Heater
Eliminates damaging condensation, increasing reliability of electrical enclosure components.
• Filter Recoating Adhesive
This compound is a superior product for recoating filters after washing. The adhesives penetrate dirt layers to keep the filter surface tacky for longer effective performance between washings.
• Remote Thermostat Relay
Used only with a user-installed remote thermostat or the Kooltronic KLLC100 Lead Lag Controller, this 24VAC relay can be used for the sequential operation of two units or with a single unit. An external terminal strip is provided for field interconnection. NOTE: User-installed thermostat must have a set point of 75°F with a differential of 11°F. NOTE: A factory installed thermostat is not provided with this option.
• Replacement Filters
All KOOLTRONIC filters consist of a multi-layer grid of sturdy corrugated aluminum, securely held in a one-piece aluminum frame. Filters are required wherever air is drawn into an electronics enclosure or related cooling equipment to keep internal parts as clean as possible.,A non-drying adhesive coating traps a high percentage of particulate matter. These filters are reuseable, they may be washed and recoated with the appropriate filter recoating adhesive. Replacements are available for those which become damaged or otherwise non-serviceable.
• Short Cycle Protector
Protects the compressor from possible damage due to harmful short cycling, (frequent starting) where temperature controls enable the compressor to restart frequently or after a power interruption. These conditions could be due to low or fluctuating heat loads within the electrical enclosure or a power failure. The Compressor Short Cycle Protector will prevent the compressor from starting when it has been shut off for less than several minutes or the power was interrupted. By limiting the number of compressor starts per hour, the life of the compressor is prolonged. It is recommended where installations are subject to solar gain and or changes in the enclosure internal load due to the degree of usage of the equipment being cooled. It is also recommended where higher capacity units are specified in anticipation of the future addition of heat producing equipment being added to the enclosure.
• Special motors~ line cords or connectors
• Special paint finishes
Click on image for larger view
Airflow Diagram Thumbnail
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Integrity P21 Switchableairflow diagram

Dimensions, inches [mm], are for reference only and subject to change.

Integrity P21 Switchable performance chart
Click on image for larger view
General Arrangement Thumbnail
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Integrity P21 Switchable 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.
ModelGuideline
Dimensions
(H x W x D)*
CFM @0" S.P.
Integrity P3232.25 x 14.50 x 13.000
*See model specifics for drawings, dimensions, mounting or cutout plans.
  • Data Sheet
    Integrity P21 NEMA 4/4X Data Sheet [1096Kb]
  • GA Drawing
    Integrity P21 NEMA 4/4X General Arrangement Drawing [102Kb]
  • Installation Instructions
    Integrity P21 NEMA 4/4X Installation Instructions [160Kb]
  • Literature
    Air Conditioner Quick-Sheet [105Kb]
    Condensate Evaporator Kits [241Kb]
    Condensation and Electronics [3983Kb]
    Electronic Enclosure Cooling With Special Purpose Air Conditioners [254Kb]
    Hazardous Location Series White Paper [234Kb]
    Increasing the Lifespan and Reliability of Electrical Components [212Kb]
    Slimkool Series Flyer [584Kb]
    NEMA 4/4X Color Brochure (4 pages) [704Kb]
    Kooltronic Custom Capabilities Flyer [2194Kb]
    Kooltronic Custom Cooling Medical Flyer [211Kb]
    Kooltronic Design Guide/Catalog (220 pages) [229400Kb]
    Kooltronic Refrigeration System Manufacturing [55Kb]
    Kooltronic Standard Warranty [55Kb]
    Kooltronic Unit Longevity Press Release [167Kb]
    NEMA Enclosure Ratings [91Kb]
    Short-Form Catalog (16 pages) [897Kb]
    Airflow Switch Data Sheet [159Kb]
    Laboratory Environmental Testing Services [157Kb]
    Powder Paint Application Facilities Flyer [165Kb]
  • Operator's Manual
    KLLC100 Lead-Lag Controller (Discontinued) [38Kb]
    KLLC480 Lead-Lag Controller [79Kb]
    Integrity P21 NEMA 4/4X Operator's Manual [613Kb]
  • Wiring Diagram
    K_NA4C3P21R and L Wiring Diagram (Ladder) [52Kb]
    K2NA4C3P21L Wiring Diagram (Point-to-Point) [53Kb]
    K2NA4C3P21L-1 Wiring Diagram (Point-to-Point) [48Kb]
    K2NA4C3P21L5 Wiring Diagram (Point-to-Point) [53Kb]
    KNA4C3P21L Wiring Diagram (Ladder) [55Kb]
    KNA4C3P21L Wiring Diagram (Point-to-Point) [55Kb]
    KNA4C3P21L Wiring Diagram (Point-to-Point) [61Kb]
    KNA4C3P21L Wiring Diagram (Point-to-Point) [45Kb]
    KNA4C3P21L Wiring Diagram (Point-to-Point) [59Kb]
    KNA4C3P21LF Wiring Diagram (Point-to-Point) [52Kb]

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Wednesday, May 21, 2025  
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30 Pennington-Hopewell Road
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