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TrimLine Series NPT52
Air-Cooled Panel-Mounted Air Conditioners

Legacy products are no longer in normal production. Consult factory for availability.
We recommend current series Guardian, GuardianX or Slimkool  as possible alternatives.
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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
K2A6C16NPT52L12Listed1600013300125/-4052/-402306018.018986
1600011300125/-4052/-402305018.018986
Rating shown is for operation at maximum ambient temperature.

TECHNICAL DATA

ModelNEMA
Rating
BTU/H
Capacity
Volts/Hz
K2A6C16NPT52L1216000230/60V, 60Hz
UL/CUL Listed or Recognized: Listed
95/95 BTU Rating: 13300
Ambient Max./Min. °F: 125/-40
Ambient Max./Min. °C: 52/-40
Running Amps: 18.0
Approx. weight: 189 lbs. (86 kg)
K2A6C16NPT52L1216000230/60V, 50Hz
UL/CUL Listed or Recognized: Listed
95/95 BTU Rating: 11300
Ambient Max./Min. °F: 125/-40
Ambient Max./Min. °C: 52/-40
Running Amps: 18.0
Approx. weight: 189 lbs. (86 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.
• Closed-Loop Cooling
The enclosure interior airflow system is isolated from the ambient airflow or waterflow system. No ambient air can invade the cool, dehumidified sensitive component compartment.
• 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.
• 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.
• Low Temperature Control Thermostat
Electronic Thermostatic Low Temperature Control prevents over-cooling and provides energy-efficient operation.
• NEMA 12 Rating Maintained (UL50)
All units are fully gasketed for tight, leak-proof installation, in compliance with the NEMA 12 Enclosure Ratings.
• UL/CUL Listed
• Zero ODP Refrigerant
R410a, an HFC having zero ozone depleting potential.

• Compressor Short Cycle Protector
Available as a Standard Feature on models with Programmable Thermostat. 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.
• 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.
• Internal Corrosion Protection
This protection increases reliability in hostile environments. 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 GuardianX 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.
• Lifting Eyes
Heavy-gauge steel lifting eyes, attached to the side panels, assist in positioning units.
• 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.
• Special controls or indicators
• Special materials or finishes
• Special motors, line cords or connectors
• Stainless or Aluminum Shell
• Temperature Alarm
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.
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Airflow Diagram Thumbnail
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TrimLine NPT52airflow diagram

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

TrimLine NPT52 performance chart
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General Arrangement Thumbnail
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TrimLine NPT52 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.
TrimLine NPT4747.25 x 15.06 x 12.250
*See model specifics for drawings, dimensions, mounting or cutout plans.
  • Data Sheet
    NPT52 Product Data Sheet [333Kb]
  • GA Drawing
    K2A6C16NPT52L General Arrangement Drawing [138Kb]
  • Installation Instructions
    K2A6C16NPT52L Installation Instructions (2 pages) [120Kb]
  • 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]
    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]
    K2A6C16NPT52L Operator's Manual [432Kb]
  • Wiring Diagram
    K2A6C16NPT52L & F Wiring Diagram (Point-to-Point) [80Kb]
    K2A6C16NPT52L Wiring Diagram (Ladder) [50Kb]
    K2A6C16NPT52L Wiring Diagram (Point-to-Point) [79Kb]

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Wednesday, May 21, 2025  
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