Kooltronic Large Horizontal Top-Mounted Series User manual

Keep This Manual
With Air Conditioner
AIR CONDITIONER
OPERATOR'S MANUAL
CAUTION
BEFORE INSTALLING AND
USING THIS AIR CONDITIONER,
IT IS IMPORTANT THAT THIS
MANUAL BE READ AND
UNDERSTOOD THOROUGHLY
KOOLTRONIC, INC.
30 Pennington-Hopewell Road
Pennington, NJ 08534
609•466-3400
FAX: 609 • 466-1114
www.kooltronic.com
LARGE HORIZONTAL
TOP-MOUNTED
SERIES
900-037-00 (1/19)
(CDR: 20131)

2
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 - 10
Mounting
Drawings and Dimensions
Technical Data
Major Component Replacements
Wiring Schematics
VIII. Maintenance 11-12
IX. Trouble Shooting 13
X. Warranty 14
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 electronic
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 7 through 10.

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 carton tears, dents, scratches, loose articles or evidence of oil are signs
of damage and should be noted on the Freight Bill.Cartons should be opened promptly 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 removed from the banded pallet, lying down or double stacked 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 MM, NM, 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 an appropriate carton (preferably original carton if possible), with
adequate internal protective packaging, making sure carton is marked and is kept in correct
upright position.
■For local, controlled transportation, strap carton 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.
3
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.

4
IV. Product Identification and Nameplate
Each Kooltronic Air Conditioner includes an identification nameplate. This nameplate provides:
qModel Number
wSerial Number
eElectrical power characteristics
rMaximum and minimum ambient operating temperatures
tCooling capacity
yType and amount of refrigerant required for recharging
uDesign Pressure
iMaximum Fuse Size
oManufacturing Order Number
aFilter Part Number
sUnderwriters Laboratories Inc. Listed or Recognized Marks and NEMA ratings
We recommend you copy this information from your unit.
qwo When ordering parts, specify the Model Number, Serial Number & MFG. Order Number.
eBefore operating, be sure that the power source matches these requirements.
yUse of incorrect type or amount of refrigerant will adversely affect performance and may damage the unit.
r Make sure that these parameters are met. Failure to do so may result in permanent damage to the unit.
ALL MOTORS ARE THERMALLY PROTECTED
VIOLATES WARRANTY
UNAUTHORIZED SERVICE OR MODIFICATION
COMPARTMENT ONLY
TYPE 1 SPECIAL PURPOSE AIR CONDITIONER EQUIPMENT
NEMA/EEMAC/UL50 BY UNDERWRITERS LABORATORIES, INC.
SERVICE AIR FILTER REGULARLY
FILTER P/N
FUSE SIZE
MAX.
HIGHLOW
Oz.REFRIGERANT
MAX.°FMIN.°F
AMBIENT TEMP.COOLING
ALLOW 5 MIN. BEFORE RESTARTING AFTER SHUTDOWN
Air Conditioner
DESIGN PRESSURE P.S.I.G.
MFG. ORDER NO.
KOOLTRONIC, INC. PENNINGTON, NJ
MANUFACTURED BY:
COOLING BTU
F. L . A .PH.FREQ.
VOLTS
SERIAL NUMBERMODEL NUMBER
LISTED 84H7
SPECIAL PURPOSE
AIR CONDITIONER
ee ee rr
ty
qw
uu i
a
o
s

5
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. This Air Conditioner utilizes a “Closed-Loop Cooling System” to
ensure optimum performance of the installed components.
Closed-Loop cooling seals the electronics 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
released to the ambient air through the drain tube or the condensate evaporator.
The heat removed through the evaporator coil is transferred by the compressed refrigerant to the
condenser coil. Ambient air or water is then passed through the condenser coil, where it absorbs the
heat and is then discharged to the environment.
The cool air discharge temperature is regulated by the capacity control (hot gas bypass) valve. The
unit is equipped with a Low Temperature Thermostat to prevent over-cooling. In applications having
frequent voluntary heat load fluctuations, an optional Compressor Short Cycle Protector is recommended.

6
VI. Pre-Installation Testing
Before mounting the air conditioner to the enclosure, test for proper operation. This will verify the
shipping integrity of the system. Please follow the steps below prior to installation.
CAUTION
1. Allow the unit to sit in a upright position at a room temperature of 65°F minimum, allowing the
system to warm-up.This is particularly important in winter months.
2. Refer to the identification label for proper electrical voltage and current requirements. Then connect
the power cord to a properly grounded and fused electrical supply. Leave the electrical power off.
3. Note the factory thermostat setting which is typically 75 to 80°F.
4. Adjust thermostat to its maximum setting.
5. If your unit is equipped with an on-off switch, move it to the on position.
6. Turn electrical power on.
7. Verify that the evaporator blower or fan is running.
8. Adjust the thermostat to its minimum setting.The compressor should start. On units equipped with a
short cycle protector, the compressor will have a delayed start of 6 minutes from the time power is
applied to the unit.
9. Verify that the condenser blower or fan is running.Note, on units equipped with a low ambient kit, the
start of the condenser fan or blower will be delayed until the system pressures rise.
10. Operate the air conditioner for approximately ten (10) minutes. During this period no unusual
noise or vibration should be evident. Both the evaporator and condenser fans or blowers should
be delivering air through their respective discharge ports.The cool discharged air should be less
than 70°F when the room temperature is between 70 and 80°F.
11. On units equipped with heaters, adjust both the cooling and heating thermostats to their maximum
settings. Verify that the compressor and condenser fan or blower has stopped. Verify elevated
discharge air temperature from the evaporator air discharge.
12. If your unit is equipped with an on-off switch, leave it in the on position. Return the cooling
thermostat to its original setting. If unit is equipped with a heater, return the heating thermostat to
its original position.
13. Turn off the electrical power source, and disconnect the air conditioner from the power source.
14. If any cover plug is removed to adjust the unit, make certain to put it back in place to maintain the
integrity of the closed-loop airflow system.
NOTE: Before shipment all Kooltronic, Inc. Air Conditioners are subjected to a performance test.
The Air Conditioner must be standing in its proper mounting position for a minimum of
five (5) minutes prior to testing. Failure to follow this procedure will cause permanent
damage to the compressor.

VII. Specific Model Data
Mounting
Kooltronic Air Conditioners have been engineered to be installed easily.To avoid damaging your
Air Conditioner, please read the following information before installation.
•Top-Mounted Air Conditioners for external top installation contain weld-nuts.
•Refer to page 8 for the location of all mounting holes and cutouts.
•Make sure the cutouts don't interfere with components inside your cabinet.
•Proper alignment of all air inlets and outlets is essential for optimum performance of
the Air Conditioner.
•Place supplied gasket on perimiter of enclosure cutouts. All externally-mounted Air
Conditioners must be fully gasketed to ensure proper sealing.This seal is necessary to
maintain the integrity of the closed loop system.
•Use all existing mounting holes to insure stability and a tight seal.
•High strength mounting screws are recommended.
•The external drain hose must not be elevated above the exit port. Improper mounting will
impede the flow of condensate and may cause internal malfunctions.
When unmounting the unit from the cabinet, make certain
to keep the unit level, to avoid spilling of any water
that may be in the condensate pan.
7
3/4
19/16
1
3 TYP.
173/8
157/8
141/4
3/4
33/4
915/16
25/16
213/16
(6)
.312 DIA.
HOLES
31
121/2
TYP.
3
41/16
TYP. 35/8
221/2
201/2
161/2
TYP.
2
33/4
161/2
51/2
(6)
.312 DIA.
HOLES
333/4
117/8
TYP.
5




WARM AIR RETURN
FROM ENCLOSURE
(Enclosure opening should be located as
high as possible within this area, and equal
or exceed size of cool air outlets.)
COOL AIR OUTLET
TO ENCLOSURE
➀
MOUNTING PLANS
Dimensions (inches) are for reference only and are subject to change.
CAUTION
HT 14/16
HT 7-12

THERMOSTAT
ADJUSTMENT
FILTER
POWER
CORD
DRAIN
173/8
18
31




POWER
CORD
THERMOSTAT
ADJUSTMENT
FILTER
DRAIN
333/4
191/2
221/2




WARM AIR RETURN
FROM ENCLOSURE
FILTERED CONDENSER AIR INLET
(Ambient Air In) CONDENSER OUTLET (Warm Ambient Air Out) COOL AIR OUTLET TO ENCLOSURE
  ➂
Drawings and Dimensions
FULL-SIZE SERIES
Dimensions (inches) are for reference only and are subject to change.
8
Technical Data
KA3C7HTR 7000 125/50 115/100 60/50 20.0 150/155
KA3C7HTR56 7000 125/50 115 50/60* 20.0 150/155
K2A3C7HTL 7000 125/50 230/200 60/50 12.1 150/155
K2A3C7HTL5 7000 125/50 230 50 12.0 150/155
KA3C8HTR 8000 110/50 115/100 60/50 20.0 150/155
KA3C8HTR56 8000 110/50 115 50/60* 20.0 150/155
K2A3C8HTL 8000 125/50 230/200 60/50 12.1 150/155
K2A3C8HTL5 8000 125/50 230 50 12.0 150/155
KA3C9HTR 9000 110/50 115/100 60/50 20.0 150/155
KA3C9HTR56 9000 110/50 115 50/60* 20.0 150/155
K2A3C9HTL 9000 125/50 230/200 60/50 12.1 150/155
K2A3C9HTL5 9000 125/50 230 50 12.0 150/155
KA3C10HTR 10000 110/50 115/100 60/50 20.0 150/155
KA3C10HTR56 10000 110/50 115 50/60* 20.0 150/155
K2A3C10HTL 10000 125/50 230/200 60/50 12.1 150/155
K2A3C10HTL5 10000 125/50 230 50 12.0 150/155
KA3C12HTR 12000 110/50 115/100 60/50 20.0 150/155
K2A3C12HTL 12000 115/50 230/200 60/50 13.5 150/155
K2A3C12HTL5 12000 115/50 230 50 10.5 150/155
K2A3C14HTL 14000 110/50 230/200 60/50 16.0 195
K2A3C14HTL5 14000 110/50 230 50 14.5 195
K2A3C16HTL 16000 110/50 230/200 60/50 16.0 195
K2A3C16HTL5 16000 110/50 230 50 14.5 195
** Ambient ** Approximate
BTU/H Temp. °F Running Weight
Model Rating Max./Min. Volts Hz Amps (lbs.)
"
* Switchable. Switch is internally-mounted for security.
** Rating shown is for operation at maximum ambient temperature.
"115V, 60 Hz and 230V, 60 Hz models also perform at full capacity when operated
at 100V, 50 Hz or 200V, 50 Hz respectively. No transformer is required.
"
7,000 - 12,000 BTU/H 14,000/16,000 BTU/H
Units in BOLD are current standard products. Other units are prior product offerings and shown for reference only.

9
Major Component Replacements
K2A3C_HTL K2A3C14HTL
7,000-10,000 BTU/H K2A3C12HTL K2A3C16HTL
Part Part Number Part Number Part Number
Compressor 0665-04 0665-38 0665-23
Compressor Capacitor 0452-12 0452-14 0452-32
Condenser Blower Motor 0261-288 0261-288 0261-288
Condenser Blower Motor Capacitor 0452-03 0452-03 0452-03
Condenser Blower Assembly 6076-00-23 6076-00-23 6076-00-23
Evaporator Blower Motor 0261-54 0261-54 0261-150
Evaporator Blower Motor Capacitor 0452-06 0452-06 0452-03
Evaporator Blower Assembly 6015-00-130 6015-00-130 6076-00-20
Filter 17001F 17001F 17001F
NOTE: For 115V 50/60Hz consult Kooltronic.
Standard Features
Built-in Condensate Evaporator
Low-ODP Refrigerant
EMI/RFI Suppressor
Low Temperature Control Thermostat

Wiring Schematics
RELAY
WE BK
SUPPRESSOR
TIMER
RELAY
COMPRESSOR
CAP.
RS
CO/L
SHORT
CYCLE
PROTECTOR
GN
CONDENSER
BLOWER
MOTOR
MOTOR
BLOWER
EVAPORATOR
CAP.
CAP.
CRANKCASE HEATER
PRESSURE
SWITCH
OPTIONAL
OPTIONAL
THERMAL
CUTOUT
HEATER
BU
55
T-STAT
R
T-STAT
75
BU
YR
STRIP
HEATER
B
2
4
3
6
8
7
01
2
4
3
0
6
8
7
1
YELLOW
BLUE
RED
h
COMMON
RED TO YELLOW
CLOSES ON TEMP.
INCREASE
RED TO BLUE
OPENS ON TEMP.
INCREASE
COOLING EFFECT DETECTOR
TERMINAL
BLOCK
TO CUSTOMER
ALARM SYSTEM
{
LOW AIR FLOW DETECTOR
{RD-N.C.
BK-N.0.
WE-COM
RED TO BLUE
OPENS ON PRESS.
RED TOYELLOW
CLOSES ON PRESS.
EXCESS PRESURE DETECTOR
BLUE
{BK
RD
RED
YELLOW
COMMON
h
INCREASE
INCREASE
WE
TERMINAL
BLOCK
TERMINAL
BLOCK
ALARM SYSTEM
TO CUSTOMER
ALARM SYSTEM
TO CUSTOMER
10
HT SERIES
WD-125 REV. B