Guardian/GuardianX DP53 480 Volt 3-Phase
NEMA 4 or 4X Air Conditioners

TECHNICAL DATA

Click to Request Quote	Model	NEMA Rating	UL/CUL Listed or Recognized	BTU/H Capacity	95/95 Rating BTU/H	Ambient Temp.		Volts	Hz	Running Amps	Approx. Weight
						°F	°C				Approx. Weight
						Max./Min.	Max./Min.				lbs	kg
	K3NA6C18DP53L	4	Listed	18000	15800	125/-20	52/-28	480	60	5.7	224	102
	K3NA6C18DP53LV	4X	Listed	18000	15800	125/-20	52/-28	480	60	5.7	224	102
	K3NA4C18DP53L	4	Listed	18000	16300	131/0	55/-17	480	60	7.1	224	102
	K3NA4C18DP53LV	4X	Listed	18000	16300	131/0	55/-17	480	60	7.1	224	102

Rating shown is for operation at maximum ambient temperature.

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Guardian DP53 480V Air Conditioner photo

NEMA TYPE 4 OR 4X
MAINTAINED

TECHNICAL DATA

Click to Request Quote:
Model Number:	K3NA6C18DP53L	K3NA6C18DP53LV	K3NA4C18DP53L	K3NA4C18DP53LV
NEMA Rating:	4	4X	4	4X
UL/CUL Listed or Recognized:	Listed	Listed	Listed	Listed
BTU/H Capacity:	18000	18000	18000	18000
95/95 Rating BTU/H:	15800	15800	16300	16300
Ambient Temp °.F Max./Min.:	125/-20	125/-20	131/0	131/0
Ambient Temp °.C Max./Min.:	52/-28	52/-28	55/-17	55/-17
Volts:	480	480	480	480
Hz:	60	60	60	60
Running Amps:	5.7	5.7	7.1	7.1
Approx. Weight lbs.:	224	224	224	224
Approx. Weight kg.:	102	102	102	102

Rating shown is for operation at maximum ambient temperature.

STANDARD FEATURES

Baked Powder Finish (NEMA 4 Models)
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.
Compressor 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.
Condenser Blower Controller
Epoxy-Coated Condenser and Evaporator Coils
- Condenser and Evaporator Coils are Epoxy-Coated. 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.
External junction box for permanent wiring connections
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.
Heavy-Duty Steel Shell
Internal Corrosion Protection (NEMA 4X models)
- 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. NOTE: Internal Corrosion Protection is a Standard Feature on NEMA 4X models.
NEMA 4 or 4X Rating Maintained (UL50)
- GASKETING: All Guardian 480 Volt Series units are fully gasketed for tight, leakproof installation, in compliance with the NEMA Type 4 Enclosure Rating. The GuardianX 480 Volt, with a NEMA 4X Rating, is offered with a Stainless Steel Shell and Internal Corrosion Protection.
Programmable Temperature Alarm
- All models feature a programmable temperature alarm to alert if early action is required.
Programmable Thermostat
- All models feature a programmable thermostat, allowing more accurate and versatile performance features.
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/CUL Listed
Zero ODP Refrigerant (R134a)
- R134a, an HFC having zero ozone depleting potential.

ACCESSORIES AND OPTIONS

For Guardian/GuardianX 480 Volt DP53L-LV models the filter part number is 6382F. The 480 Volt DP53L-LV uses two filters.

AIRFLOW
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Guardian DP53 480V Air Conditioner isometric illustration

PERFORMANCE

GENERAL ARRANGEMENT
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Guardian DP53 480V Air Conditioner general arrangement drawing

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

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

Many popular units are available as 3D solid models for customer system integration. Contact Kooltronic for details.

SIMILAR MODELS

Model	Guideline Dimensions (H x W x D)*	BTU/H Rating
Guardian DP38 480V	38.99 x 17.29 x 11.22	5000
Guardian DP50 480V	50.04 x 20.14 x 12.05	14000
Guardian DP52 480V	52.02 x 17.38 x 9.85	7000-9000
Guardian DP60 480V	60.20 x 24.14 x 13.02	26000
*See model specifics for drawings, dimensions, mounting or cutout plans.

DOCUMENTS

Contact Info:
	Kooltronic, Inc. 30 Pennington-Hopewell Road Pennington, NJ 08534 USA
	609-466-3400 800-321-KOOL
	Contact Us

Guardian/GuardianX DP53 480 Volt 3-PhaseNEMA 4 or 4X Air Conditioners

Guardian/GuardianX DP53 480 Volt 3-Phase
NEMA 4 or 4X Air Conditioners