Kooltronic GUARDIAN Series Manual
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Kooltronic GUARDIAN Series Manual

480 volt
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OPERATOR'S MANUAL
CAUTION
BEFORE INSTALLING AND
USING THIS AIR CONDITIONER,
IT IS IMPORTANT THAT THIS
MANUAL BE READ AND
UNDERSTOOD THOROUGHLY
900-039-71 (7/19)
(CDR: 20172)
Keep This Manual
With Air Conditioner
AIR CONDITIONER
480 VOLT
GUARDIAN SERIES
K3NA6C26DP60L
Find additional information on
this model at kooltronic.com or
use the Technical Documents
QR code below.
Technical
Documents
KOOLTRONIC, INC.
30 Pennington-Hopewell Road
Pennington, NJ 08534
FAX: 609 • 466-1114
www.kooltronic.com
609 • 466-3400

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Summary of Contents for Kooltronic GUARDIAN Series

  • Page 1 480 VOLT GUARDIAN SERIES K3NA6C26DP60L Find additional information on Keep This Manual this model at kooltronic.com or use the Technical Documents With Air Conditioner QR code below. Technical Documents AIR CONDITIONER OPERATOR'S MANUAL CAUTION KOOLTRONIC, INC. BEFORE INSTALLING AND 30 Pennington-Hopewell Road...

  • Page 2: Table Of Contents

    Trouble Shooting 15 - 16 Warranty NOTE: Wiring Schematics are available on the specific model page of the Kooltronic website. I. Introduction Kooltronic Air Conditioners are designed to provide a cool, dehumidified environment for your electronic components. There are models to fit virtually all sizes and shapes of electronics enclosures, in capacities ranging from 1,000 to 30,000 BTU/H.

  • Page 3: Incoming Inspection

    Manual. See section VI PRE-INSTALLATION TESTING. 2) Before operating the Kooltronic Air Conditioner be certain that it is placed in its correct mounting position. This Air Conditioner is designed to operate in a vertical position only. This placement must be done a minimum of 5 minutes prior to operating in order to allow the compressor oil to drain to the compressor sump area.

  • Page 4: Product Identification And Nameplate

    IV. Product Identification and Nameplate Each Kooltronic Air Conditioner includes an identification nameplate. This nameplate provides: Model Number Serial Number Cooling/heating capacity Electrical power characteristics Type and amount of regrigerant required for recharging Design Pressure Minimum and maximum ambient operating temperatures...

  • Page 5: Principles Of Operation

    When the Kooltronic Air Conditioner is properly sized it should operate constantly and maintain 75°F to 115°F enclosure temperature, depending on the ambient temperatures.
  • Page 6 Principles of Operation (con’t) MAX AND MIN TEMPERATURE MEMORIZATION 2) Select the required parameter. Press the SET HOW TO SEE THE MIN TEMPERATURE: key to display its value. 3) Use up or down arrow keys to change its value. 1) Press and release the down arrow key.
  • Page 7 Principles of Operation (con’t) RESETTING If it becomes necessary to reset the unit, the factory settings are as follows: RANGE PARAMETER DESCRIPTION VALUE UNIT MINIMUM MAXIMUM Set Point °F Differential °F Fourth probe display Third probe display Evaporator probe display Room probe display Differential for temperature alarm recovery °F...
  • Page 8 Principles of Operation (con’t) UNITS EQUIPPED WITH LOW TEMPERATURE THERMOSTAT A Low Temperature Thermostat prevents the evaporator coil from freezing. In conditions of low ambient temperature and low enclosure load, the thermostat regulates the return air temperature from 75°F to 86°F. The standard set point of the CONDENSER AIR IN Low Temperature Thermostat is 75°F.

  • Page 9: Pre-Installation Testing

    10. If a cover plug was removed to adjust the unit, be sure to replace it in order to maintain the integrity of the closed-loop airflow system. NOTE: Before shipment all Kooltronic Air Conditioners are subjected to a performance test.

  • Page 10: Specific Model Data

    VII. Specific Model Data Mounting The Kooltronic Special Purpose Air Conditioners K3NA6C26DP60L have been engineered to be installed easily. Prior to mounting, refer to pages 8 and 9 for the drawings showing dimensions and locations of mounting holes and cutouts. Prior to cutting or drilling, make sure that cutouts and mounting holes do not interfere with components inside the cabinet.

  • Page 11: Drawings And Dimensions

    Drawings and Dimensions MOUNTING PLAN K3NA4C26DP60L 1.42 10.56 10.56 [36.0] [268.2] [268.2] WARM AIR RETURN FROM (11) .312 [7.9] ENCLOSURE DIA. HOLES COOL AIR OUTLET 22.03 TO ENCLOSURE [559.6] TYP. 7.87 [199.9] 14.67 [372.6] 16.31 15.18 [414.3] [385.6] TYP. 1.20 [30.5] 19.72 [500.9]...
  • Page 12 Drawings and Dimensions...

  • Page 13: Technical Data

    Technical Data BTU/H Ambient Running Approximate Capacity BTU/H Temp. °F Amps Weight Model 60/50 Hz 95°F/95°F Max./Min. Volts 131°F/131°F (lbs.) K3NA6C26DP60L 26000 22800 131/-20 BTU/H Ambient Running Approximate Capacity BTU/H Temp. °F Amps Weight Model 60/50 Hz 95°F/95°F Max./Min. Volts 125°F/125°F (lbs.) K3NA6C26DP60L...

  • Page 14: Maintenance

    B. Blowers The design life of the blowers used in all Kooltronic Air Conditioners is substantially in excess of 20,000 hours. All Kooltronic condenser and evaporator blowers are equipped with automatic-reset thermal overload protectors.

  • Page 15: Trouble Shooting

    D. Refrigerant Loss Kooltronic Air Conditioners are subjected to a series of tests to detect refrigerant leaks, during and after manufacture. It is possible that shipping or other damage, or microscopic leaks over a long period, may result in the need for replenishment of refrigerant charge. When it has been verified by a Certified EPA Technician that a refrigerant shortage does exist, the leak must be repaired.
  • Page 16 Problem Cause Solution Unit not cooling. (Temperature Failed Evaporator Blower. Check Blower wire connections. difference between return and Check Blower Capacitor. supply air is less than 10°F). Replace Evaporator Blower. Compressor and Condenser Blower are running. Evaporator Blower does not run. Unit not cooling.

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