Kooltronic KA4C2.5NML Installation Instructions

I. Introduction

These instructions provide you with the general information necessary for proper installation of the air conditioners.
BEFORE INSTALLING THE AIR CONDITIONER, IT IS IMPORTANT THAT THESE INSTRUCTIONS BE READ AND UNDERSTOOD THOROUGHLY

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. Pre-Installation Testing

1. The unit must sit in an upright position at a minimum room temperature of 65ºF to allow the system to warm up.
2. Refer to the identification label for proper electrical voltage and current requirements. Connect the power cord to a properly grounded and fused electrical
supply, leaving electrical power to the unit turned off.
3. Note the factory thermostat setting which is typically 75 to 80ºF. Adjust the thermostat to its maximum setting.
4. Turn the electrical power on. Verify that the evaporator blower or fan is running.
5. Observe the temperature on the digital display. The thermostat must be set a minimum of 10ºF below this temperature for the compressor to operate (the
factory setting is 75ºF). To set the thermostat temperature: 1) Press SET for 3 or more seconds. 2) Use UP or DOWN arrows to set the temperature.
3) Press SET again.
6. 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 six (6) minutes from the time the power is applied to the unit.
7. Verify that the condenser blower or fan is running. Note that on units equipped with a low ambient kit, the start of the condenser fan or blower will be delayed
until the system pressures rise.
8. Operate the air conditioner for appproximately ten (10) minutes. During this period no unusual noise or vibration should be evident. Both the evaporator and
condenser blowers should be delivering air through their respective discharge ports. The cool air discharged should be less than 70ºF when the room
temperature is between 70ºF and 80ºF. It is normal for the condenser blower to cycle on/off during this period.
9. 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.
10. If the unit is equipped with an on-off switch, leave it in the on position. Return the cooling thermostat to its original setting. If the unit is equipped with a
heater, return the heating thermostat to its original position.
11. Turn off the electrical power and disconnect the air conditioner from the power source.
12. If any cover was removed to adjust the unit, be sure to replace it in order to maintain the integrity of the closed-loop airflow system.

IV. Mounting

1. Refer to Mounting Plan for the location of all mounting holes and cutouts.
2. Make sure the cutouts don't interfere with components inside your cabinet.
3. Proper alignment of all air inlets and outlets is essential for optimum performance of the air conditioner.
4. All externally-mounted air conditioners are fully gasketed to ensure proper sealing. This seal is necessary to
maintain the integrity of the closed-loop system.
5. Use all existing mounting holes to insure stability and a tight seal.
6. Attach the supplied drain hose to the drain exit on the lower side panel of the air conditioner.
7. 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.
Kooltronic Air Conditioners must be standing in their 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. To avoid compressor damage do not tip the unit more than 45 ° from its proper mounting
.
position
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.
If the air conditioner is mounted to the cabinet door you must be sure that the
door hinges will support the additional weight of the air conditioner. Also be
certain that when the door is opened fully, the cabinet does not become
unbalanced. The weight of the
data can be found in the performance specifications in the Operator's Manual
available online.
CAUTION
KA4C2.5NML
is 37.5 lbs. Additional technical
KOOLTRONIC, INC. 30 Pennington-Hopewell Road Pennington, NJ 08534
609 • 466-3400 FAX: 609 • 466-1114
CAUTION
1 WARM AIR RETURN FROM
ENCLOSURE
2 COOL AIR OUTLET
TO ENCLOSURE
Dimensions, inches [mm], are for reference only and are subject to change.
kooltronic.com
Installation Instructions
Narrow-Mini Model KA4C2.5NML
with Serial Numbers E18A1604 and above
.82
[20.8]
TYP.
9.25 .69
[234.9] [17.5]
9.25 1.48
[234.9] [37.5]
.80
[20.3]
TYP.
MOUNTING PLAN
8.25
(6) .312 [7.9]
[209.5]
DIA. HOLES
TYP.
8.50
[215.9]
6.50 1.61
[247.6] [40.8]
1
6.93
[176.0]
9.75
[247.6]
2
.78
.66
[19.8]
[16.7]
900-090-81 (05/23)
(CDR: 20498)