EIC Solutions AAC-140 Series User manual

1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
EIC SOLUTIONS, INC.
Thermoelectric Air conditioner installation and
operation manual
FOR 400 Btu MODEL #’S
AAC-140-T
AAC-140-4XT
AAC-140-T-HC
AAC-140-4XT-HC
AAC-140-XXXX
Cooling Solutions for
Mission-Critical Electronics

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1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
TABLE OF CONTENTS
1. GENERAL INFORMATION
1.1 PRINCIPLES OF OPERATION ........................................................................................... 3
2. INSTALLATION
2.1
CHOOSING A LOCATION .......................................................................... 4
2.2 ORIENTATION............................................................................................. 4
2.3
PREPARING THE ENCLOSURE ................................................................ 5
2.4
INSTALLING THE AIR CONDITIONER ..................................................... 6
INSTALL THE DRIP PAN ........................................................................... 7
APPLY POWER............................................................................................ 7
3. OPERATION
3.1
THERMOSTAT SET POINTS AND HEATING COOLING UNITS.............. 8
3.2
MAINTENANCE........................................................................................... 8
4. APPENDIX......................................................................................................... 9
EIC SOLUTIONS INC.
700 VETERANS WAY, SUITE 200
WARMINSTER, PA 18974
PHONE [phone] or 1-800-497-4524
FAX [phone]
EMAIL [email protected]
VISIT US ON THE WEB AT www.eicsolutions.com.
D-06 Rev. F 11/12/2013

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1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
1. GENERAL INFORMATION
1.1 PRINCIPLES OF OPERATION
n 1834 Jean Peltier discovered that by passing a current through two dissimilar conductors the
junction of those materials will either absorb or release heat depending on the direction of the
current flow. Thirteen years earlier Thomas Seebeck had discovered that current would flow
when you placed a temperature gradient across the junction of two dissimilar metals. These
two discoveries were the basis of thermoelectrics. With the advent of modern semiconductors
thermoelectric devices became practical for real world applications and are now found in
everything from consumer goods to spacecraft.
Your EIC Solutions Thermoelectric Air Conditioner operates on this principle so there is no
compressor and no expensive, ozone depleting CFC’s. EIC’s air conditioners use Thermoelectric
“modules” sandwiched between high performance aluminum heat sinks, high CFM axial fans, and a
patented electronic design to “pump” the heat from the inside of your enclosure to the outside,
without exposing your delicate electronics to any outside air or contaminates. See Figure 1.1.
EIC uses only the highest quality components in our air conditioners and you can expect
years of trouble free cooling from these solid-state devices. Every unit we sell is backed by our
one year parts and labor warranty.
FIGURE 1.1
AMBIENT AIR
REMOVES HEAT
FROM HOT SIDE
HEAT SINK
HOT
SIDE
HEAT
SINK
COLD
SIDE
HEAT
SINK
COLD AIR
CIRCULATED
WITHIN THE
ENCLOSURE
COLD AIR
CIRCULATED
WITHIN THE
ENCLOSURE
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1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
2. INSTALLATION
2.1 CHOOSING A LOCATION ON YOUR ENCLOSURE
When choosing a mounting location for your unit, be sure to keep air flows of both the
interior and exterior heatsinks and fans in mind. Adequate clearance between the fans/heatsinks
and nearby surfaces is required for unrestricted air flows which will ensure optimal performance
and long, trouble free operation. The general rule is to allow a minimum of two inches between
the fans or heatsinks and any surface. Refer to figure 1.1 for an air flow diagram.
Other considerations in deciding on a mounting location include; allowing access to
thermostat (this will be inside the enclosure) if frequent adjustments are to be made; allowing
access to the hot side heat sinks (this will be on the outside of the enclosure) for cleaning if the
unit will be used in a harsh, dirty environment.
2.2 ORIENTATION
Your 400 Btu, DC powered Air Conditioner unit is designed to be vertically on the front, rear
or side of your enclosure. See Figure 2.1.
Vertically mounted 400 Btu units are always mounted with the exposed heatsink fins at the
top and bottom and the terminal on the side. (Fig. 2.1) Vertical installations often require the use
of a Condensate Drip Pan (part # DP-140V) depending on a number of factors including internal
enclosure temperature, ambient temperature, humidity levels, quality of enclosure seals, and
frequency of enclosure opening. We strongly recommend the use of a drip pan to protect the
electronics from dripping condensate. (Fig. 2.1)
Mounting the unit with the fins pointing to either side will cause condensate to drip in an
uncontrolled manner, possibly damaging the air conditioner or electronic equipment within the
enclosure. If one of these orientations is the only possible configuration, contact the Engineering
Dept. at EIC for a custom solution.
Model AAC-140, DC powered, 400 Btu units are not designed to be mounted on the top
of an enclosure. Doing so will allow condensate to drip in an uncontrolled manner from the air
conditioner on the inside of the enclosure damaging the air conditioner and the electronics
within the enclosure.

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1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
FIGURE 2.1
2.3 PREPARING THE ENCLOSURE
To mount the 400 Btu unit you will need to cut an opening in your enclosure and drill
mounting holes. A cut out drawing showing the cut out size and hole locations has been included
in this manual (see Appendix A, B). The instructions for installing the air conditioner are printed
below.
VERTICAL INSTALLATION OF AAC-140, 400 BTU
UNIT WITH DP-140V VERTICAL DRIP PAN AND
DRAIN TUBE
HOT SIDE OF AC
(OUTSIDE OF
ENCLOSURE)
COLD SIDE OF
A
C (INSIDE OF
ENCLOSURE)
DRAIN
TUBE
ENCLOSURE
DP-140V
DRIP PAN
HOT SIDE FAN
COLD SIDE FAN
HOT SIDE HEAT
SINK FINS
COLD SIDE
HEAT SINK FINS

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1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
TOOLS AND MATERIALS NEEDED:
•AAC-140 cut out stencil (cut out is the same for all types of this model)
•Center Punch
•Tape Measure and pencil
•Jigsaw or suitable alternative
•Electric drill
•# 29 drill bit (.136”) (Not used for extension frame option)
•# 8-32 tap and tap handle (Not used for extension frame option)
•.1875” drill bit (Extension frame option only)
•# 8-32 x 3/8” stainless machine screws (supplied)
•Nylon washers (supplied)
•One neoprene gasket (supplied)
CUT THE OPENING AND DRILL MOUNTING HOLES IN THE ENCLOSURE
1. Using the guidelines provided in the installation manual choose an appropriate location for
the air conditioner on your enclosure.
2. Tape the cut out stencil to the enclosure in the location you have chosen.
3. Before marking, cutting or drilling check that the location meets the clearance
requirements as specified in the installation manual.
4. Using a pencil, center punch or other method, mark the exact center point of each
mounting hole on the enclosure. Also mark the four corners of the section to be cut out.
5. Remove the stencil and using a pencil or other method, connect the marks you made at the
corners of the cut out, forming a rectangle.
6. Using the jigsaw, cut the opening in the enclosure.
7. Using the appropriate drill bit, drill a hole at each of the mounting hole marks you made
earlier.
8. Using the 8-32 tap, tap each of the holes you have drilled (standard frame models only).
2.4 INSTALLING THE AIR CONDITIONER
INSTALL THE AIR CONDITIONER
1. Before starting the installation be sure the power and thermostat wires are connected to
the terminal strip on the side of the unit and that they are long enough to reach both the
power source and the desired thermostat mounting location. This will eliminate having to
access the terminal strip once the unit is installed. See the “Apply Power” section of this
manual on page 7.
2. Lay the air conditioner down with the cold side fan (side with the terminal strip) facing up.
3. Take the supplied gasket and lay it down on the flange.
4. Take one of the supplied mounting screws and, from the under side of the flange, push it up
through the top right mounting hole, and through the hole in the gasket. The gasket hole is
undersized and will hold the screw in place. Repeat this on the top left mounting hole.
5. Set the AC unit in the hole you’ve cut in the enclosure, and using a screwdriver, carefully
start the two screws you attached to the gasket to the tapped holes in the enclosure. Do
not tighten these at this time.
6. Install the rest of the screws in the flange placing a nylon washer on each fastener and
screw them into the tapped holes in the enclosure. Do not tighten them completely. If you
have purchased a vertical drip pan, you will need to install the long screw in the center hole
in the bottom flange.
7. Remove the two starter screws and place a nylon washer on each and reinstall.
8. Tighten all screws.

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1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
INSTALL THE DRIP PAN
1. Two hose fittings were provided with the drip pan, a right angle and a straight one. Choose
one and install it on the drip pan. Be sure if you use the right angle fitting it is facing the
desired direction prior to installing the drip pan.
2. There is one mounting hole in the drip pan, match this hole with the long mounting screw
protruding into the enclosure at the bottom of the AC unit. Push the drip pan onto this
screw.
3. Using the 8-32 keps nut provided, attach the drip pan to the air conditioner.
4. Attach the supplied PVC drain tube to the hose fitting on the drip pan. This tube should be
routed to the bottom of the enclosure and fed through a 3/8” hole to the outside.
APPLY POWER AND MOUNT THE THERMOSTAT
AAC-140 air conditioners are DC powered. They are designed to operate on 24 – 28 volts,
DC. Once the air conditioner is mounted, refer to the schematic supplied (see Appendix C, D) with
the unit for proper power wiring.
Amperage for 24 VDC unit is 4 amps
Amperage for 28 VDC unit is 5 amps
For other voltages you will receive a separate wiring diagram showing the correct method of
applying power.
If you purchased a Digital Temperature Controller with your AC unit, a separate wiring
diagram has been provided which will show the correct method of applying power to your
particular air conditioner.
The unit is supplied with a separate thermostat that should be mounted inside the enclosure
and wired to the unit per the supplied schematic. The thermostat can be mounted in any
orientation. The ideal location for mounting the thermostat is near the particular electronic item
you’d like to protect. Mounting the thermostat directly over a heat source may cause the AC unit
to run continually causing the enclosure temperature to drop below the thermostat set point.
Conversely, mounting the thermostat in the cool air stream from the AC unit may cause the AC
unit to shut down before the main part of the enclosure has been cooled to the thermostat set
point.
If you purchased a heating and cooling unit you will receive a second thermostat that should
be mounted following the same guidelines used in mounting the cooling thermostat above.
Upon applying power to the air conditioner the fan on the cold side (inside the enclosure) will
come on. The hot side fan (outside the enclosure) may also run depending on where the
thermostat is set. The cold side fan always runs to circulate air within your enclosure thereby
eliminating any “hot spots”. The hot side fans will only run when the air conditioner is cooling –
they are “pumping” the heat from the inside of your enclosure to the outside air.

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1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
3. OPERATION
3.1 THERMOSTAT SET POINTS AND HEATING/COOLING UNITS
SETTING THE THERMOSTAT
Your EIC air conditioner is equipped with an adjustable thermostat. The set point you
choose should be based on the desired internal temperature of the enclosure. The air conditioner
will run until the set point temperature is achieved within the enclosure and then the hot side fans
and the thermoelectric cooling modules will shut down. The cold side fan will continue to run,
circulating the air to maintain a uniform temperature within the enclosure.
HEATING AND COOLING UNITS
If you purchased an HC unit (heating and cooling) the heater operation can be controlled by
a second adjustable thermostat. You must set the heating thermostat set-point at least 10
degrees lower than the cooling thermostat set-point to prevent both the heating and the
cooling from operating at the same time.
3.2 MAINTENANCE
MAINTENANCE
EIC Thermoelectric Air Conditioners are virtually maintenance-free. The only time
maintenance is required is when a unit is installed in an extremely dirty environment. In these
cases, the hot side heat sinks (outside the enclosure) should be inspected regularly for a build-up
of dust or dirt. If a build-up is present on the heat sink fins, it can be easily removed as follows:
1. Disconnect the power from the unit.
2. Dry dust/dirt can be removed using compressed air to blow out the heat sinks. Do not
direct any high-pressure air at the fan.
3. NEMA 4X models of our air conditioners are designed to allow for water wash down of the
hot side of the unit, which is outside of the enclosure (never the cold side which is inside
the enclosure). A pressure washer can be used to carefully clean the hot side heat sink
fins. Never direct high-pressure water at the fan or the joint formed by the mounting
flange, gasket and enclosure. Never allow the cold side of your unit to get wet. Always
check your serial label before proceeding with a water wash down.
Keeping the hot side heat sink fins free from any insulating build-up of dirt or dust will ensure
long, trouble-free operation of your air conditioner.
ONLY NEMA 4X UNITS, WITH MODEL NUMBERS BEGINNING WITH “AAC-140-4XT”, ARE
DESIGNED FOR THE HOT SIDE OF THE AIR CONDITIONER (OUTSIDE THE ENCLOSURE) TO
TOLERATE EXPOSURE TO WATER.
NEMA 12 UNITS, WITH MODEL #’S BEGINNING WITH “AAC-140-T”, ARE NOT DESIGNED TO BE
EXPOSED TO WATER AND SHOULD NEVER BE WASHED DOWN.
NEVER EXPOSE THE COLD SIDE OF ANY AIR CONDITIONER (INSIDE THE ENCLOSURE) TO
WATER.
If you have any questions about any aspect of your EIC air conditioner, don’t hesitate to call us at
the numbers listed below.

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1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
APPENDIX A
Enclosure cutout for 400 BTU air conditioner
NON-EXTENSION FRAME
Holes to be 8-32 TAP

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1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
APPENDIX B
Enclosure cutout for 400 BTU air conditioner
EXTENSION FRAME OPTION ONLY
Holes to be .1875” Clearance
TOP

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1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
APPENDIX C
Wiring for 400 BTU Models without heat option
APPENDIX D

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1-800-497-4524 EIC SOLUTIONS, INC.215-443-5190
Wiring for 400 BTU Models with heat option