Kooltronic KAC4P3777R User manual

AIR CONDITIONER
OPERATOR'S MANUAL
CAUTION
BEFORE INSTALLING AND USING
THIS AIR CONDITIONER, IT IS
IMPORTANT THAT INSTALLATION
INSTRUCTIONS (DOCUMENT
NUMBER 900-090-00) SHIPPED
WITH THE UNIT BE READ AND
UNDERSTOOD THOROUGHLY
KOOLTRONIC, INC.
30 Pennington-Hopewell Road
Pennington, NJ 08534
609•466-3400
FAX: 609 • 466-1114
www.kooltronic.com
900-039-65
Model KAC4P3777R

TABLE OF CONTENTS
Page
I. Introduction 2
II. Incoming Inspection 3
III. Product Handling 3
IV. Product Identification Label 4
V. Principles of Operation 5
VI. Pre-Installation Testing 6
VII. Specific Model Data 7 - 13
Mounting
Drawings and Dimensions
Technical Data
Major Component Replacements
Standard Features
Wiring Schematics
VIII. Maintenance 14 - 15
IX. Trouble Shooting 15 - 16
X. Warranty 17
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. Our "closed-loop" design also ensures that your
components will not be exposed to hot, dirty operating conditions.
This Manual provides you with the necessary general information for properly installing and operating
standard Kooltronic Air Conditioners. Technical data and mounting instructions are presented on pages
6 through 11.
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II. Incoming Inspection
Kooltronic Air Conditioners are designed, built and packaged to withstand the shock and vibration normally
associated with shipment by common carriers. Occasionally improper handling during shipping causes damage.
Such handling could include unbanding of palletized shipments, failing to respect "This Side Up" arrows, rough
handling, falling off conveyors, excessive vibration, crushing, etc. Therefore, a thorough inspection should be
done upon receipt of all shipments. Any packaging tears, dents, scratches, loose articles or evidence of oil are
signs of damage and should be noted on the Freight Bill. Shipments should be opened immediately and the units
inspected for CONCEALED DAMAGE. Kooltronic Air Conditioners must be delivered in the proper mounting
position to assure that damage to the compressor has not occurred during shipping. Any Kooltronic Air
Conditioner that is delivered lying down or removed from the shrink wrapped or banded pallet should be refused.
An immediate claim MUST be filed with the freight carrier and an inspection requested. Retain all packing
materials. Kooltronic cannot assume responsibility for Consignee's failure to file a timely freight claim.
III. Product Handling:
1) Do not attempt to operate your Kooltronic Air Conditioner until you read and thoroughly understand this
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.
All Air Conditioners containing an M, P, or V as part of the model number are designed to operate
in a vertical position only. All Air Conditioners containing an H, RT or RM in the model number are
designed to operate in a horizontal 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.
CAUTION
3) Before operating this unit, all electrical wiring must be checked to assure the proper connection to the
correct power source. Minimum circuit ampacity should be at least 125% of the amperage found on the air
conditioner label for the corresponding voltage. Do not exceed the maximum fuse size found on the label.
4) We do not recommend that Air Conditioners be shipped to their final destination attached to an enclosure.
In the event that the Air Conditioner needs to be shipped attached to an enclosure it is strongly
recommended that proper support be provided for the Air Conditioner. Excessive vibration can occur if Air
Conditioners are not properly supported when shipped on enclosures, increasing the potential for internal
damage and voiding the warranty.
5) PROCEDURE FOR PROPER PACKING AND SHIPMENT OF KOOLTRONIC AIR
CONDITIONERS:
■Keep Air Conditioner in proper upright position indicated by arrow markers.
■Pack Air Conditioner in a suitable container (preferably original packaging if possible), with
adequate internal protective packaging, making sure shipment is marked and is kept in correct
upright position.
■For local, controlled transportation, strap packaging to a secure part of truck to prevent falling
or sliding, minimize vibration, etc.
■For common carrier shipment, band unit(s) securely to a pallet. Unpalleted shipment risks
severe damage which voids the warranty.
Kooltronic Air Conditioners must be operated in their proper mounting position. If attempts are
made to operate a unit that is not in its designed mounting position, permanent compressor
damage will occur. This action will void the warranty. To avoid compressor damage do not tip the
unit more than 45° from its proper mounting position.

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IV. Product Identification and Labels
Each Kooltronic Air Conditioner includes an identification label. This label provides:
Model Number
Serial Number
Electrical power characteristics
Maximum and minimum ambient operating temperatures
Cooling capacity
Heating capacity
Type and amount of refrigerant required for recharging
Design Pressure
Filter Part Number
Customer Part Number
Final Assembly Number
Manufacturing Order Number
We recommend you copy this information from your unit.
MODEL NO. SERIAL NO.
COOLING AMBIENT TEMP HEATING.
VOLTS. FREQ. PH. F.L.A. MIN. oF MAX oF F.L.A.
COOLING BTU HEATING BTU REFRIGERANT Oz.
DESIGN PRESSURE P.S.I.G. MAX.
LOW HIGH FUSE SIZE FILTER P/N
CUSTOMER PART NO.
FINAL ASSEMBLY NO. MFG. ORDER NO.
SPECIAL PURPOSE AIR CONDITIONER
NEMA/EEMAC/UL50 BY UNDERWRITERS LABORATORIES, INC.
TYPES 3R & 12 INTERFACE TO THE ELECTRICAL ENCLOSURE ONLY
NEMA/EEMAC/UL50 BY UNDERWRITERS LABORATORIES, INC.
TYPE 1 SPECIAL PURPOSE AIR CONDITIONER EQUIPMENT
COMPARTMENT ONLY
Air Conditioner
➀➁ When ordering parts, specify the Model Number and Serial Number.
➂ Before operating, be sure that the power source matches these requirements.
➅Use of incorrect type or amount of refrigerant will adversely affect performance and may damage the unit.
➃Make sure that these parameters are met. Failure to do so may result in permanent damage to the unit.
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SERVICE AIR FILTERS REGULARLY
ALLOW 5 MIN. BEFORE RESTARTING AFTER SHUTDOWN
UNAUTHORIZED SERVICE OR MODIFICATION VIOLATES WARRANTY
ALL MOTORS ARE THERMALLY PROTECTED
THIS PRODUCT IS PROTECTED BY ONE OR MORE OF THE FOLLOWING PATENTS: 3,019,965
3,120,166 3,211,360 3,559,728 3,807,493 AND OTHER PATENTS PENDING
MANUFACTURED BY:
KOOLTRONIC, INC. PENNINGTON, NJ VENTURA, CA
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V. Principles of Operation
Kooltronic Air Conditioners are required when the
equipment operating temperature must be kept near or
lower than the ambient room temperature, and/or the
cabinet must be sealed from dust, fumes, oil, corrosives
and other contaminants. These Air Conditioners utilize a
"Closed-Loop Cooling System" to ensure optimum
performance of the installed components.
Closed-Loop cooling seals the electronic enclosure from
hostile elements in the environment. Two separate
circulation systems are employed. The internal system
cools and dehumidifies the air inside the cabinet, totally
isolating the sensitive electronics and other components
from the environment. The external system uses
circulating ambient air or water to discharge the heat
removed from the electronics. The heat is dissipated
from the enclosure by means of the vapor compression
refrigeration cycle. This takes place in a hermetically-
sealed refrigeration system, utilizing either an air-cooled
or water-cooled condenser heat exchanger. The warm air
inside the enclosure is drawn through the evaporator coil
where it is cooled, dehumidified and returned.
Any enclosure moisture accumulated on the evaporator
coil is collected in the condensate tray and removed
through the drain tube to the condensate evaporator.
Condensate evaporates in the condensate evaporator
and is released to the ambient air by the condenser
impeller.
The heat removed through the evaporator coil is transferred by the compressed refrigerant to the condenser
coil. Ambient air is then passed through the condenser coil, where it absorbs the heat and is then discharged
to the environment.
This unit is equipped with Cooling (Low Temperature) and Heating thermostats. The factory Cooling
thermostat setting is 92°F with a differential of 7°F. When the temperature inside of the enclosure rises
above 99°F the air conditioner will run in Cooling Mode. When the temperature inside of the enclosure
drops below 92°F the air conditioner will shut off. The factory Heater thermostat setting is 45°F with a
differential of 5°F. When the temperature inside of the enclosure drops below 40°F the air conditioner will
run in Heating Mode. When the temperature inside of the enclosure exceeds 45°F the air conditioner will
shut off. The Cooling and Heating thermostats are interlocked, so that the air conditioner cannot run in
Cooling and Heating Mode simultaneously. The Condenser Impeller is controlled by a pressure switch. At
medium ambient temperature below 75°F the Condenser Impeller will cycle. When the air conditioner
starts in Cooling Mode the Condenser Impeller will remain off for about four (4) to seven (7) minutes,
until the discharge refrigerant pressure builds up. The Cooling thermostat is equipped with a three (3)
minute time delay on start-up to prevent compressor short cycling.
COOL AIR TO
ENCLOSURE
HEATED AIR
FROM
ENCLOSURE
CONDENSER
(Heated Ambient
OUTLET
Air Out)
CONDENSER
AIR INLET
(Ambient Air In)
CONDENSER
(Heated Ambient
OUTLET
Air Out)
CONDENSER
(Heated Ambient
OUTLET
Air Out)
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KAC4P3777R