KwiKool KPAC-II Series User manual

KPAC-II PORTABLE AIR CONDITIONERS KWIKOOL
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KPAC-II SERIES PORTABLE
AIR CONDITIONERS
OPERATION MANUAL

KWIKOOL KPAC-II PORTABLE AIR CONDITIONERS
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Table of Contents
SECTION I UNIT COMPONENTS .....................................................................................................................................................3
KPAC-II PORTABLE AIR CONDITIONERS, MODELS 1411, 1811, 2421 ...................................................................................................... 3
SECTION II INSTALLATION AND ASSEMBLY.....................................................................................................................................5
AAIR CHUTES (STANDARD EQUIPMENT) .........................................................................................................................................5
BCONDENSATE TANK ......................................................................................................................................................................5
CFOR CEILING KIT USERS -SINGLE DUCT CEILING KIT ...................................................................................................................... 5
DPOWER CONNECTION ...................................................................................................................................................................6
SECTION III OPERATIONAL SAFEGUARDS ....................................................................................................................................7
SECTION IV UNIT OPERATION .....................................................................................................................................................8
AAPPLY ELECTRICAL POWER............................................................................................................................................................ 8
BCONTROL PANEL ........................................................................................................................................................................... 8
CSYSTEM OPERATION ..................................................................................................................................................................... 9
SECTION V BUILT IN SAFEGUARDS ...........................................................................................................................................10
ACOMPRESSOR TIME DELAY ......................................................................................................................................................... 10
BHIGH-PRESSURE SWITCH AND ALARM ........................................................................................................................................ 10
CAUTOMATIC RESTART .................................................................................................................................................................10
DCONDENSATE TANK &HIGH LEVEL ALARM ................................................................................................................................. 10
ESERVICE PORTS............................................................................................................................................................................ 10
SECTION VI APPLICATION REQUIREMENTS................................................................................................................................10
AAIR TEMPERATURE REQUIREMENTS ...........................................................................................................................................10
BCAPACITY &TEMPERATURE SETTINGS........................................................................................................................................ 11
CPOSITIONING OF UNIT................................................................................................................................................................. 11
SECTION VII MAINTENANCE .......................................................................................................................................................12
AIR FILTERS .......................................................................................................................................................................................... 12
SECTION VIII FAULT CODES .........................................................................................................................................................12
SECTION IX KPAC TROUBLESHOOTING GUIDE ...........................................................................................................................12

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SECTION I UNIT COMPONENTS
KwiKool KPAC II Portable Air Conditioners are designed to remove heated air from a specific area. The
systems use flexible air chutes (standard feature) to supply cool air and an optional ceiling kit can be
used to send the hot air up through the ceiling or to another space. The three models have capacities of
1.1 ton, 1.5 ton and 2 tons.
KPAC-II PORTABLE AIR CONDITIONERS, MODELS 1411, 1811, 2421
Before installing and using the KwiKool KPAC II
Series Portable Air Conditioner, read this manual
carefully for instructions and proper usage and
all safeguards. This manual should be retained
for future reference.

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KPAC 2421-2
Legend
Cold Air Return 4. Condenser Air Inlet
Control Pad 5. Condenser Air Outlet 14”
Cold Air Supply 6. Power Cord

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SECTION II INSTALLATION AND ASSEMBLY
A AIR CHUTES (STANDARD EQUIPMENT)
Install Supply air flanges with the supplied fasteners to the front of the KPAC-II unit above the control
panel. Use the supplied clamps to attach the air chutes to the collars. See instructions in the air chute
kit for specific procedures.
B CONDENSATE TANK
KPAC-II systems come standard with an internal 2.5-gallon condensate tank. The internal condensate
tank is equipped with a float switch that shuts down the KPAC-II unit and alerts operators with an alarm
and displays CF (“Condensate Full”) when the condensate tank is full. This prevents accidental water
overflow on the floor.
The alarm will clear automatically upon emptying then reconnecting the 2.5-gallon tank. To continue
operation of the KPAC-II, the collection bottle must be removed, emptied and then re-installed. Turning
the KPAC-II to OFF will stop the audible alarm.
The following steps are those needed to empty the tank and reset the alarm.
1. Remove the float switch jack by pulling it straight back, then remove the condensate bottle by
pushing the front of the bottle slightly downward and then pull the bottle out.
2. Remove the cap threaded onto the bottle by turning it counterclockwise
3. Empty the collected water
4. Put the cap back on the bottle by turning it clockwise taking care not to cross thread the cap upon
installation
5. Tighten the cap to the point where the angle connector on the condensate bottle lines up with the
nipple extending out from the drain pan on the KPAC-II and insert the bottle by pushing down
slightly to clear the extended drain pan nipple. Be sure the drain pan nipple is inside of the angle
connector and the cap is snug and not cross threaded to avoid water leakage.
6. Install the float switch jack by pushing it straight in and confirm the pin is fully inserted or the alarm
will not clear.
7. Continue normal operation.
C FOR CEILING KIT USERS - SINGLE DUCT CEILING KIT
KPAC-II models can use this method when conditioning a space, adding supplemental conditioning,
process conditioning and comfort conditioning. Additionally, the ceiling kit replacement panel is not

KWIKOOL KPAC-II PORTABLE AIR CONDITIONERS
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limited to ceiling use and may be placed or fastened to any vertical or horizontal surface, providing the
Discharge air is able to be directed to the space where it is mounted. For areas with a closed ceiling or
no ceiling use the double flange ceiling kit method or extended duct method.
NOTE
To fasten the duct to the exhaust port collar, using the “chinch”
strap, thread the strap through the bottom side of the buckle and
squeeze the tab to open the clamp of the buckle. The strap is then
pulled as tightly as possible through the buckle and the clamp is
released to hold the strap in place.
CAUTION
The area where the Discharge air is directed must be open to a
space that is well vented or large enough to absorb the load
without pressurizing and coming back into the conditioned space.
Discharge Make-up air will come from the conditioned space and
create a negative pressure in the conditioned area.
1. The KPAC-II is placed in the area being conditioned.
2. Line up the flange included with the ceiling kit with the corresponding holes in the top of the system
and use the included fasteners to mount the flange. Discharge air is moved from the space thru
ducts connected to the condenser discharge air flange on the KPAC-II.
3. Then clamp the duct to the ceiling panel (the ceiling panel is typically used in drop ceilings).
4. A 24”X24” space is opened in the ceiling grid and the replacement panel with the duct attached to
the ceiling kit flange is installed. Then clamp the duct onto the top of the KPAC.
5. Determine if the application can tolerate this condition. The KPAC-II must have fresh Make-up air to
the condenser to operate.
6. The negative pressure will pull in surrounding Conditioned air and ambient air from unsealed areas
which may include dust, moisture or other particles.
Visit www.KwiKool.com for more information and a complete set up guide.
D POWER CONNECTION
Verify that the source power, phase and breaker size is compatible with the KPAC-II serial plate
information and that the electrical circuit is dedicated only for the use of the KPAC-II Unit. Contact a
licensed electrician in case of doubt about the connection.
KPAC-II systems are factory equipped with 8 feet of power cable sized to meet the power requirement
of the system. Extension power cable is allowed but cannot exceed 25’ and must be rated to operate
the KPAC-II.
KPAC-II units that come supplied with a factory installed plug require the exact receptacle to match the
plug and exact circuit size and power. Cutting the power plug on the KPAC-II unit will void its warranty.

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SECTION III OPERATIONAL SAFEGUARDS
Read the following safeguards carefully before installing the KPAC-II:
WARNING
Do not operate or install the KPAC-II unit in a potentially
explosive, combustible, or corrosive gas atmosphere.
WARNING
To avoid burns and fire damage, keep the KPAC-II system away
from flammable materials and open flame.
WARNING
To avoid electrical shock, keep the KPAC-II system away from
direct contact with water and any liquids. Do not touch the system
with wet hands.
WARNING
Do not move the system while it is operating. Before moving the
system, first turn system to OFF then unplug the system from the
power source. Remove all ducting and hoses attached to the
KPAC unit. Only then should the casters be unlocked.
CAUTION
To ensure the KPAC-II system is stable, the floor on which the
system is to be placed should be level, free of vibration and strong
enough to support the weight of the KPAC-II model. Lock casters
to prevent unit movement.
CAUTION
Do not tilt or overturn the unit, since this could damage the
compressor.
Do not place objects on top of the unit.
Do not insert hands or any other object into the Cold air supply chutes.
Do not operate the KPAC-II system with its service doors open.
If the KPAC-II system makes abnormal noises or vibrations, call 1-800-KWIKOOL (1-800-594-5665) for
help.

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SECTION IV UNIT OPERATION
A APPLY ELECTRICAL POWER
Once power is engaged by plugging in the system and/or switching the breaker to the ON position, the
KPAC-II display will show the current room temperature. The unit is set to OFF and the fan is set to the
default position. A 2.5-minute time delay starts, indicated by a flashing F on the display. If nothing
shows on the display, refer to Section IX, Troubleshooting Guide.
B CONTROL PANEL
The control panel display shows the current operational status of the unit.
1. POWER Button - Pressing this button on the control panel engages or shuts down the KPAC-II
system. All settings selected are stored in the microprocessor board even if the power is lost
including the ON/OFF selection. Refer to the Section IX, Troubleshooting Guide, if the KPAC-II
is alerting an alarm after selecting ON.
2. MODE Button - Depressing the MODE button selects the choice of operations: COOL, for
cooling with compressor operation. FAN, for air circulation without compressor operation. COOL
will flash when the compressor is running. COOL will not flash when the room temperature is
equal to or lower than the set temperature or the system is timing out.
3. F/C - Selects the way that room temperature and set point are displayed on the control panel.
Choices are Fahrenheit or Celsius. Fis the factory default. This indicator will flash when the
system is in “time out”. The flashing indicates the system is in a 2.5-minute time delay to prevent
compressor short cycling.
4. FAN - Pressing the fan key cycles the Supply air fan between AUTO FAN and FAN ON. When
the system is in AUTO FAN the display reads AUTO FAN. The Supply Air fan only operates
when the compressor is running. When the fan is set to ON, the fan runs continuously as long
as the unit is in the ON position. The fan speed window will be blank when in fan on mode.
5. Up (+) and Down (-) Selector Buttons - Raises or lowers the desired set temperature.

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a) When changing the set point, pressing the + or –key, the word SET will appear on the display
and the current set point flashes ON and OFF. The value of the set point is changed 1 degree
each time the + or –is pressed.
b) The adjusted set point flashes on and off 12 times after the last change and then returns to
display the room temperature.
c) Lowering or raising the set point will not change the temperature of the Supply air. For best
results, always adjust the set point to a temperature the KPAC-II can cycle on and off at to avoid
operational issues such as freezing.
CAUTION
KPAC-II systems are designed to maintain the set point when
sized properly. Constant operation without achieving the set point
may shorten the expected operational life of the system.
NOTE
The lowest set point temperature available for the KPAC-II is 60
degrees F, and the highest setting is 95 degrees F. The control
will not allow adjustments beyond these ranges.
C SYSTEM OPERATION
1. Turn On the KPAC-II System. Pressing the ON/OFF button once on the control panel will turn the
unit ON and ON will be displayed on the right side of the display as well as the previously chosen
mode.
2. If the unit was previously set to the cooling mode (COOL) then COOL will be displayed. If the
compressor is running, the COOL on the display will be flashing. If the unit has been sitting for over
2 minutes, this should happen immediately upon turning the unit on, unless the set point is lower
than the current room temperature. In this case the unit is ready to automatically turn on once the
temperature rises above the set point.
3. If the unit was recently turned off or the unit turned itself off because it reached the set point, the
compressor will not turn on until the system waits for approximately 2.5-minutes. This prevents the
compressor from being damaged due to short cycling of the compressor.
The indicator that the unit is in the “time out” condition is that the F(or C) in the display will be
flashing.
When the compressor starts, the Fwill stop flashing and the COOL will begin flashing.
The condenser fan will start immediately with the compressor. If the display flashes 99, this
indicates ambient temperature of 99 degrees F or more. This is normal and will stop flashing
when the ambient temperature falls below 99 degrees F.
4. If the unit was previously set to the FAN mode, then FAN will be displayed and the Supply Air fan
will start to run.

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SECTION V BUILT IN SAFEGUARDS
A COMPRESSOR TIME DELAY
Protects the unit from potential damage by delaying the compressor from starting before the pressures
in the mechanical system equalize. This always activates when the KPAC-II:
Cycles off.
Is turned off.
Power is lost and then restored.
The operational mode is changed.
Display flashes Cor Fif the time delay is activated. The time delay lasts for about 2.5 minutes.
B HIGH-PRESSURE SWITCH AND ALARM
Protects the KPAC-II Series unit from potential damage to the mechanical system by shutting down,
sounding an audible alarm and displaying a fault code (AL) when the system pressure exceeds safe
operating conditions. The high pressure switch is a manual reset switch located in the condenser inlet
on the back of the system and labeled HP Reset, and must be reset after the switch is activated and
the condition causing the trip is corrected. If activated, the switch will click when pushed in and then
released.
C AUTOMATIC RESTART
In the event of a power loss, the KPAC-II resumes operation when the power is restored. All operational
functions are preserved in the memory of the Microprocessor Board including the ON/OFF selection.
D CONDENSATE TANK & HIGH LEVEL ALARM
All KPAC models come standard with an internal condensate tank. The tank is equipped with an
overflow safety cut-off. When the tank is full, the safety will automatically shut down the KPAC-II unit,
sound an audible alarm and display a fault code (CF). This prevents accidental flooding of the
conditioned space. To continue operation when the bottle is filled, see Section II Paragraph B.
E SERVICE PORTS
Located in the filter access compartment (as seen when facing the controls of the unit) of the KPAC-II.
This gives service personal a connection point for service gauges to monitor the operating pressures of
the KPAC-II’s refrigeration system.
SECTION VI APPLICATION REQUIREMENTS
A AIR TEMPERATURE REQUIREMENTS
The environmental requirements of the KPAC-II unit at the installation site are 60 to 110 degrees F for
the condenser Make-up air located on the back of the unit.
If the unit is operated in an environment above 110 F, the High Pressure switch may trip, stopping
the unit’s compressor. The operator also may notice diminished performance.

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The High Pressure switch is a manual reset switch. The HP Reset switch is located in the
condenser Make-up air inlet on the back of the system.
Reset the unit by pressing the button labeled HP Reset.
Standard air-cooled KPAC-II models are not designed to operate at temperatures below 60 degrees F.
Low-ambient temperature controls are available. The controls must be special ordered and at an
additional cost. Temperatures below 60 degrees F will cause freezing and/or diminished performance
and can void the warranty.
B CAPACITY & TEMPERATURE SETTINGS
Sizing of the units is based on matching capacity to a specific heat load while maintaining a 72-degree
F temperature. To reach temperatures below 72 degrees F, the unit must have extra capacity.
CAUTION
KwiKool recommends that the operator not set the temperature
set point below 72 degrees F, unless there is excess cooling
capacity beyond the heat load, since this may cause the unit’s
evaporator coil to freeze up.
CPOSITIONING OF UNIT
Do not place the KPAC-II unit in direct sunlight. The unit should be positioned so that the output of the
unit can be focused as close to the heat generating equipment as possible with the front grill fully
exposed.
CAUTION
Do not block the front of the unit, since this will cause a restriction
in the airflow and can cause low performance and/or evaporator
coil freezing.
NOTE
The KPAC-II will take condenser Make-up air, which cannot be
ducted, from the area of placement. The inlet for the condenser
Make-up air is located in the rear of the unit and will not allow for
the back of the unit to be placed flat against a wall or fixed object.
Not allowing at least 5 or 6 inches of space between the inlet and
a wall or fixed object will cause decreased performance and/or
high pressure safety trip that shuts down the KPAC-II.

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SECTION VII MAINTENANCE
AIR FILTERS
The KPAC-II unit comes from the factory with filters installed on the evaporator inlet to prevent dust and
debris from entering the system and circulating in the conditioned space. Factory-installed filters are a
disposable type and must be periodically checked and replaced based on the air quality of the
conditioned space.
CAUTION
Failure to maintain the filters will cause restricted air flow and can
lower overall unit performance.
The air filter is located on the front of the KPAC-II unit below the control. Release the two slotted
fasteners on the access door to open.
SECTION VIII FAULT CODES
The KPAC-II System incorporates a self-diagnostic system that sounds an audible alarm, stops the
system and displays a fault code (shown below) to indicate the nature of the problem on the display
panel. See the troubleshooting guide later in this manual for further information:
CF = Condensate Tank Full
AL = High Pressure Switch Tripped
FP = Freeze Protection (optional)
SECTION IX KPAC TROUBLESHOOTING GUIDE
FAULT
POSSIBLE CAUSE
POSSIBLE SOLUTION
Unit displays CF, Audible
alarm fails to clear on
start up or while
operating.
Internal Condensate Tank is full, or
condensate float switch jack is not
installed or not positioned correctly.
Water level switch is engaged.
1. Empty Internal Condensate Tank.
(see Section II, Paragraph B)
2. Unplug tank plug and reinstall to
ensure good connections.
3. System automatically resets when
fault condition is corrected.

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FAULT
POSSIBLE CAUSE
POSSIBLE SOLUTION
Unit Displays AL,
Audible alarm is
sounding during start up
or while operating.
Microprocessor board has detected
high pressure. The High Pressure
switch is tripped.
High pressure is normally caused by
reduced Condenser air flow.
Check for restriction in ducting.
Check for Condenser air system
ventilation (See Section VI.
Paragraph C).
Check condenser motors and/or
blowers for proper operation.
The High Pressure (HP) switch is a
manual reset type. To reset, press
the button labeled HP Reset, located
in the condenser Make-up air inlet on
the back side of the KPAC-II, as
seen by the operator. The operator
should feel a click.
Audible alarm fails to
clear on start up or while
operating, unit displays
FP. Optional.
Microprocessor has detected
freezing on the evaporator coil if the
system has a factory installed freeze
sensor. (Special order).
Check for freezing on the evaporator
coil and turn the system off to let it
thaw out. Auto resets upon
correction. Call 1-800-KWIKOOL (1-
800-594-5665) if the system is not
equipped with a freeze sensor.
System is ON and
display is showing ON,
but unit is not supplying
Conditioned air.
System is in time out (For Cis
flashing).
Control is set above room
temperature.
Control is adjusted out of
operating parameters.
System not in the correct
operational MODE.
Wait 2.5 minutes for the time delay
to elapse. Review System
Operations guide to adjust control.
System is ON but the
microprocessor board
resets the time delay
(flashing For C) when
the compressor attempts
to start.
Microprocessor board detects
voltage drop below operating
parameters.
Confirm the integrity of the
source power.
Check for proper wire size and
length of power extension cable.
Be sure the circuit is dedicated to
the operation of the KPAC-II
only.
Power is supplied but
control is blank.
Low voltage circuit is not engaged.
Check source power breaker and
verify incoming power to contractor.
Call 1-800-KWIKOOL (1-800-594-
5665) for assistance.

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FAULT
POSSIBLE CAUSE
POSSIBLE SOLUTION
System trips breaker on
start up.
Incoming power is incorrect.
Breaker is undersized or faulty.
Power cable is too long and/or
undersized.
Verify the circuit and power cable is
within the systems specifications,
consult with the electrician or:
Call 1-800-KWIKOOL (1-800-594-
5665) for guidance.
Display shows 32 and
unit will not turn on
cooling.
No connection of temperature sensor
to Microprocessor. Temperature
Sensor malfunctions.
Call 1-800-KWIKOOL (1-800-594-
5665) for help.
Supply air flow is limited,
and/or water is dripping
from the front of the
system.
Supply or Return air is blocked or
restricted, and/or the evaporator coil
is freezing.
Verify that Supply and Return air
are not blocked and duct work is
installed to specification.
Remove or add duct as needed.
Check air filter for blockage.
Evaporator coil is
freezing.
Low or restricted air flow.
Undersized capacity.
Unit constantly on.
Unable to achieve set point.
Low Return air temperature out
of factory specifications.
Mechanical system malfunction.
Direct supply Return air to area
of highest heat load.
Check for blocked air flow from
the Supply air.
Replace air filters.
Adjust set point to allow the unit
to cycle.
Add another KPAC-II system or
larger capacity model.
Install service gauges to view
pressures.
Call 1-800-KWIKOOL (1-800-594-
5665) for assistance.
Chatter or hum is heard
from the control box
while the system is
operating.
Incoming source power is of poor
quality or low voltage component is
faulty.
Check for proper incoming voltage.
Remove excess or undersized power
cable.
Call 1-800-KWIKOOL (1-800-594-
5665) if there are any problems.
Numeral 99 flashes on
display.
Ambient room temperature is over
99 degrees F.
Unit is working properly. Lowering of
room temperature will rectify the
flashing.
59 or lower temperature
Flashes on display.
Ambient room temperature is less
than 60 degrees F.
Limits of unit have been reached.
Operating temperatures are 65 - 105
degrees F.