Thermal Edge NE050 Series User manual

User & Technical Manual
NE050, NE060, & NE080 Series
for Class I, Division 2 Hazardous Locations
Rev 2.3

1800 Hurd Drive ● Irving, Texas 75038 ● [phone] ● [phone] ● Fax [phone]
URL: www.thermaledge.com ● Email: [e-mail]
SP-ENG-210-HL0-07 2.3 2 | P a g e
Title: NE050, NE060, & NE080 Air Conditioner for Class I, Division 2 Hazardous Locations
Technical Manual
Department: Engineering
Objective: To provide important information for maintenance, diagnostics, and advance
operations of the Thermal Edge NE050, NE060 & NE080 Series Air Conditioners.
Revision History:
Rev
Date
Owner
Description
of
Changes
1.0
10
-
04
-
17
B.
Slotnick
Initial
Release
1.1
01
-
26
-
18
B.
Slotnick
Updated
unit
specifications
1.2
05
-
11
-
18
B.
Slotnick
Updated
warranty
&
RMA
procedure
1.3 09-05-18 B. Slotnick Revised minimum anti-short cycle delay & updated Remote
Controller option description
1.4
10
-
01
-
18
B.
Slotnick
Updated
warranty
&
unit
specifications
1.5 02-19-19 B. Slotnick Updated mounting instructions, unit specifications, alarm
settings & RMA procedure
1.6 06-18-19 B. Slotnick Updated preliminary testing instructions & compressor protection
default setting
1.7
08
-
16
-
19
B.
Slotnick
Updated
preventative
maintenance
&
warranty
information
1.8
12
-
31
-
19
B.
Slotnick
Updated
field
serviceable
parts
1.9
06
-
02
-
20
B.
Slotnick
Updated
System
Faults,
Alarm
Signals
&
Warranty
2.0
11
-
29
-
22
L. Biru
Updated unit specifications and field serviceable parts for NE050
2.1
02
-
09
-
23
D. Richardson
Updated
u
nit
s
pecifications
c
hart
2.2
02
-
27
-
23
D. Richardson
Updated electrical schematics
2.3
12
-
01
-
23
S. Vue
Added SCCR statement and rating value
Statement of Confidentiality
The Manual and other materials contain proprietary information, comprising Thermal Edge Inc.'s
trade secrets. Please maintain the confidentiality of all proprietary information during and after
the term of the use agreement. Also, please refrain from using this proprietary information in any
other manner, including in any other business, without Thermal Edge Inc.’s written approval.
Thermal Edge Inc. reserves the right to revise and otherwise modify the Manual to reflect
changes in the requirements, standards, and operating recommendations. The Manual is the
sole property of Thermal Edge Inc. It must be returned upon the expiration or the termination of
the term of use agreement.
By accepting the Manual, you have read and understood the Statement of Confidentiality and will abide by
its terms and conditions.

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SP-ENG-210-HL0-07 2.3 3 | P a g e
TABLE OF CONTENTS
Overview ............................................................................................................................... 4
Inspecting the Equipment ......................................................................................................... 4
Unpacking the Air Conditioner ................................................................................................... 4
Moving the Air Conditioners ...................................................................................................... 5
Unit Label ............................................................................................................................... 5
Operation ................................................................................................................................ 5
Preliminary Testing .................................................................................................................. 8
Mounting the Air Conditioner ..................................................................................................... 9
Unit Specifications .................................................................................................................. 10
Options ................................................................................................................................. 13
System Faults ....................................................................................................................... 14
Digital Temperature Controller Programming ........................................................................... 15
Preventative Maintenance ........................................................................................................ 17
Field Serviceable Parts .......................................................................................................... 18
Safety Information .................................................................................................................. 19
Troubleshooting Guide ............................................................................................................ 19
Physical Dimensions ............................................................................................................ 23
Electrical Schematics ............................................................................................................. 25
Warranty Information ............................................................................................................ 40
Return Material Authorization (RMA) Procedure ...................................................................... 41
Appendix A ........................................................................................................................... 43

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SP-ENG-210-HL0-07 2.3 4 | P a g e
Overview
Thank you for your purchase of the Thermal Edge Special Purpose Air Conditioner. Our air
conditioning equipment is carefully designed to cool and dehumidify the air in electronic
component enclosures. Thermal Edge has designed air conditioners for all types of electronic
equipment enclosures providing capacity from 1,000 to 20,000 BTUH.
This manual will guide you through the installation, maintenance, diagnostics, and advance
operations of the NE050, NE060 & NE080 Series Air Conditioners. This manual contains
important information for the end-user who installs, maintains and/or operates the NE050,
NE060 & NE080 Air Conditioner.
Technical Support
By Phone: [phone]
(Monday – Friday, 7:30 am – 5:00 pm Central Time)
By Email: [e-mail]
Our goal is to have continuous improvement for both our equipment and our documentation. We
rely and appreciate your feedback to help us achieve our goal. Our technical support team is
glad to work with you if you require additional technical information not provided in this manual.
Inspecting the Equipment
Thermal Edge air conditioning equipment is designed, manufactured, and packed to prevent
damage from normal handling, shock and vibration during shipment. It is necessary to inspect
your equipment upon receipt to ensure that there is no visual or hidden damage.
Upon receipt of the equipment, ensure that it is always top side up as indicated by “THIS SIDE
UP” labels. This ensures that the compressor oil is not displaced.
Note: If the equipment has been on its side it must be put upright for at least 24 hours before
installing or running to ensure the compressor oil has returned to the compressor.
All physical damage to packing or signs of damage to the equipment must be noted on the
freight bill of lading. Packages must be opened after receipt and inspected for any internal or
concealed damage to the equipment and to verify proper count and order fulfillment. Delivery
without the pallet, not top side up, other freight on top, damaged or wet should be refused.
Unpacking the Air Conditioner
Always keep air conditioner top up as shown by the packaging label and arrows. If the unit is to
be transported after initial unpacking, place air conditioner back in original packing to prevent
damage.
For shipment by UPS or freight carrier, repack as received and re-band to the pallet.
Note: Shipping without being strapped to the pallet may result in tipping and damage, this will
void the warranty.

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SP-ENG-210-HL0-07 2.3 5 | P a g e
Moving the Air Conditioners
Read this section completely before running or installing your Thermal Edge air conditioning
equipment.
Note: You will need to perform a Preliminary Test before mounting the air conditioner. Refer to
the Preliminary Test section in this manual for instructions on how to run this test. You will also
need to prepare the enclosure that is to be cooled for mounting in accordance with this manual
and the template supplied.
Note: Thermal Edge air conditioning equipment must be mounted vertically with a minimum of 3”
air space for condenser air return and supply. If necessary, equipment may be mounted at up to
a 5 degree angle (rotary compressors) without damaging the compressor.
If air conditioner is to be shipped or transported at any time; pack in original packaging and strap
to pallet to prevent damage. Air conditioner must be kept upright at all times. Air conditioners
are not designed to be shipped attached to an equipment enclosure. Air conditioners shipped
which have internal damage due to shipping while attached to enclosures are warranty voided.
Unit Label
Each air conditioner has a unit label, be sure to record the data from the label to the template
below and keep this information in a safe place for warranty and ordering parts. To prevent
damage to equipment, electrical panel and wiring, and to prevent personal injury, assure that
the power source is compatible with the equipment before operating. When recharging,
refrigeration type and amount must be the same as shown on the unit label or air conditioner
will not operate properly or may be damaged and may result in the warranty voided and UL
listing voided.
Operation
Thermal Edge air conditioners will lower (or increase as necessary) the temperature inside an
enclosure to ensure its proper operational temperature. Our air conditioners, when sized
properly, will provide cooling or heating automatically controlled by the temperature digital
controller.
Thermal Edge air conditioners operate as a “closed loop” system with no exposure or
Voltage:_________________ Frequency:__________Hz Phase:__________
Current Rating (A): Cooling:___________ Heat:___________
Max Fuse:____________ Min. Circuit Ampacity:________
Refrigerant:______________ Ounces:_______________
Design Pressure: High Side PSI:__________ Low Side PSI:__________
NEMA Type:______ IP:______
Model:________________________________________
S/N:__________________________________________

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SP-ENG-210-HL0-07 2.3 6 | P a g e
introduction of outside air. This ensures that the enclosure is separated from and is not
contaminated with ambient air, dirt, chemicals, dust, moisture, or foreign matter so that sensitive
enclosure components are protected and are kept at your required operational temperature.
An air conditioner is designed to dehumidify and extract heat from an area or provide heat to an
area. The cooling is done using a simple refrigeration cycle. A product of this simple
refrigeration cycle is excess humidity that condenses to a liquid.
Thermal Edge air conditioners are designed using an advanced refrigeration cycle and are
equipped with a Condensate Removal System that changes the excess humidity liquid into a
vapor which is then vented to the atmosphere. In the event of excess water vapor where the
enclosure door has been left open there is an overflow hole on the bottom of every unit. Please
contact Thermal Edge Inc. if you encounter excess water coming from your air conditioner.
THIS APPARATUS IS SUITABLE FOR USE IN CLASS I, DIVISION 2, GROUPS A, B, C AND D
HAZARDOUS LOCATIONS, OR UNCLASSIFIED LOCATIONS ONLY.
WARNING – EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT WHILE THE
CIRCUIT IS LIVE OR UNLESS THE AREA IS KNOW TO BE FREE OF IGNITABLE
CONCENTRATIONS.
AVERTISSEMENT – RISQUE D'EXPLOSION - AVANT DE DECONNECTER L'EQUIPEMENT,
COUPER LE COURANT OU S'ASSURER QUE L'EMPLACEMENT EST DESIGNE NON
DANGEREUX.
WARNING – SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I,
DIVISION 2.
AVERTISSEMENT – RISQUE D'EXPLOSION – LA SUBSTITUTIOND E COMPOSANTSP
EUTR ENDRE CE MATERIEL INACCEPTABLE POUR LES EMPLACEMENTS DE CLASSE I,
DIVISION 2
WARNING – EXPLOSION HAZARD - DO NOT REPLACE ELECTRICAL COMPONENTS
UNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE NON-
HAZARDOUS;
AVERTISSEMENT – RISQUE D'EXPLOSION - COUPER LE COURANT OU S'ASSURER
QUE L'EMPLACEMENT EST DESIGNE NON DANGEREUX AVANT DE REPLACER LES
COMPOSANTS ÉLECTRIQUES.
WARNING – EXPOSURE TO SOME CHEMICALS MAY DEGRADE THE SEALING

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SP-ENG-210-HL0-07 2.3 7 | P a g e
PROPERTIES OF MATERIALS USED IN THE FOLLOWING SEALED DEVICES.
Sealed Device Information:
Sealed Device: Compressor Overload Protector Models B130 -135-241A, B170-150*-241C manufactured
by Foshan Tongbao. Model MRA98706 manufactured by Sensata Technologies.
Epoxy: Manufacture of Material – Resinlab L.L.C. Designation of Material – Type EP 1295
Black Generic Name of Plastic Material – Epoxy Resin
Sealed Device: Condenser Fan Switch –HS300-349-0002 manufactured by Wilspec, Oklahoma
City. Sealed Device: Low Pressure Switch – HS100-349-0001 manufactured by Wilspec,
Oklahoma City. Sealed Device: High Pressure Switch – HC100-349-0005 manufactured by
Wilspec, Oklahoma City.
Epoxy: Manufacture of Material – Suzhou Pochely Electronic Material LTD Designation of Material
– Type HB-5225A/B Generic Name of Plastic Material – Epoxy Resin
Sealed Device: Fan Motor Thermal Protector Model ST-22, manufactured by SEKI Controls
Co. Enclosure: Manufacture of Material – LG Chemical Ltd. Designation of Material – Type GP-
2306F
Epoxy: Manufacture of Material - Rhenatech GbmH Designation of Material – Type EP
VERGUSSMASSE 5315 Generic Name of Plastic Material – epoxy resin.
Sealed Device: Fan Motor Thermal Protector Type S01, manufactured by Thermik Geraetebau GMBH.
Insulation Cap: Manufacture of Material – E.I. Dupont de Nemours and Co., Inc. Designation of Material
– “Nomex” Type 410 Generic Name of Plastic Material – Aramid Insulating Paper
Epoxy: Manufacture of Material - Rhenatech GbmH Designation of Material – Type EP
VERGUSSMASSE 5315 Generic Name of Plastic Material – epoxy resin.
Sealed Device: Relay Cat. No. RY611024, manufactured by Tyco Electronics Austria GmbH.
Relay Cover: Manufacture of Material – E I Dupont De Nemours & Co Inc Designation of Material -
"Crastin" Type CE7931Generic Name of Plastic Material – Polybutylene Terephthalate (PBT)
Relay Base: Manufacture of Material – Evonik Degussa GMBH Designation of Material - "Vestodur"
Type X7212 Generic Name of Plastic Material – Polybutylene Terephthalate (PBT)
Epoxy: Manufacture of Material - Three Bond Co Ltd. Designation of Material - Type
2202C Generic Name of Plastic Material – Epoxy resin

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SP-ENG-210-HL0-07 2.3 8 | P a g e
Preliminary Testing
Before mounting the air conditioner to the enclosure, test for proper operation. Follow the steps
below prior to installation.
WARNINGS
The air conditioner must sit upright for 24 hours to assure the compressor oil has drained down
to the compressor. Check the unit label to assure the electric power available to the air
conditioner is the proper voltage and phase. Check the electric power source for proper ground
wire and neutral wire installation per 2008 NEC. Assure that the electric power is protected by a
circuit protection device; refer to the Unit Specification section in this manual for proper circuit
protection sizing.

Connect a power source to the air conditioner and turn on the power switch. The evaporator
fan will start and the digital controller will power up. If cooling is called for, the compressor
will start in 3 minutes.

If desired, change the cooling set point. Refer to Digital Temperature Controller
Programming section on this manual for details on changing the set point. Factory default
settings should be satisfactory; however, you may want to adjust heat, cooling and alarm set
points for your specific application.

The condenser fan is controlled by the refrigerant high heat pressure and will turn on
later when the operating pressure builds up. This feature allows low ambient operation
and reduces current inrush at initial power on.

Run the air conditioner for 15 minutes; during this time the condenser fan will turn on after
the condenser coil warms up. Note: Ambient Temperature must be at least 75°F.

Turn the unit off if the equipment makes any unexpected or hard mechanical noises
or vibrations and refer to the troubleshooting guide in this manual.

The supply cold air should be at least 10°F colder than the return air entering the unit. If it
is not, refer to the troubleshooting guide in this manual.

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SP-ENG-210-HL0-07 2.3 9 | P a g e

When you are satisfied that the unit is operating properly, turn the unit off, disconnect the
power and mount the unit on the enclosure in accordance with the Mounting the Air
Conditioner section in this manual.
Mounting the Air Conditioner
Using the template supplied, determine where the air conditioner is to be mounted and assure
that all required cuts and holes will not interfere with or damage the enclosure or its contents.
Assure that there is a 3” clearance between walls / obstructions and the air conditioner for the
condenser supply air and return air flow so that it is not restricted. Restricted condenser air
flow will affect the air conditioner’s performance. Mount the air conditioner high on the
enclosure in order to cool the hot air in the top of the enclosure. Position the unit where the
cold air can circulate across the width of the enclosure to cool it all the way across.
Once proper mounting placement is determined, turn the enclosure equipment off, if possible, to
prevent damage. Drill and cut the holes as indicated on the mounting template. Install
insulation gasket as required to ensure an airtight closed loop seal. Be cautious not to let any
cutting debris fall into the enclosure.
Hang the air conditioner on the Easy Hang Tabs and from inside the enclosure use the
fasteners supplied to attach the air conditioner to the enclosure. Screw all fasteners hand tight.
Then torque to 96 in-lbs. These fasteners should be checked periodically to ensure that they
have not become loose due to vibration.
The air conditioner is provided with a power cord or a power terminal block. Ensure that the
power supplied is compatible with the air conditioner’s power requirements. Properly connect
the unit to a power circuit that meets the equipment requirements and provide a circuit protection
device based on the Unit Specifications section of this manual. See Appendix A for Wago
power terminal block instructions.
After mounting the air conditioner, replace/close the enclosure door and start air conditioner;
test for air leaks to assure a proper closed air loop seal and run test the unit to assure proper
operation after mounting. If any cold air leaks are found, check for proper mounting, and apply
silicone-free Lexel seal if leaks persist. Assure that the air conditioner’s condenser inlet air filter
is installed properly and cleaned regularly.

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SP-ENG-210-HL0-07 2.3 10 | P a g e
CAUTION
If mounting the air conditioner to the enclosure door, confirm with the enclosure manufacturer
that the door’s hinges will support the air conditioner’s added weight (see equipment
specifications). Ensure that when the door is fully open that the enclosure will not topple over
due to the off-center load.
Unit Specifications
The following table provides electrical and refrigeration specifications for the NE050, NE060 &
NE080 Series Air Conditioners.
NE050 Series
Nominal Capacity Rating: 5,000 BTUH
Maximum Ambient: 122°F
Temperature Classification: T4
Unit Weight: 115VAC – 97lbs, 230VAC – 92lbs, 460VAC – 136lbs
Model
Operating
Voltage
Range
(Volts)
Inrush
Current
(Start Up
Current)
(Amps)
Loading
Current
(Running
Current)
(Amps)
Recommended
Fuse Selection
(Amps)
KVA
Rating
SCCR
kA
Refrigerant
Type
Refrigerant
Amount
(ounces)
Low/High
Unit
Pressures
(psi)
NE050126 103.5-126.5 32.3 6.14
12 Amp Class
CC, CCMR Time
Delay *
0.7
5
R134a 15 50 / 22 0
NE050236 207-253 19.15 3.76
10 Amp Class
CC, CCMR Time
Delay *
0.7
5
R422d 12.50 76 / 322
NE050486 414-506 9.18 1.9
5 Amp Class
CC, CCMR Time
Delay *
0.7
5
R422d 12.50 76 / 322
* HACR Type Circuit Breakers or Time-delay Fuses with the following electrical characteristics
are recommended. Fast-acting fuses are not recommended.
*The SCCR of your application is based on the SCCR for the branch circuit protection device installed in the
panel / enclosure per UL50 & UL508a to protect the AC unit. The defaulted SCCR recommendation of all

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SP-ENG-210-HL0-07 2.3 11 | P a g e
Thermal Edge air conditioners is 5kA.
%
of
Ampere
Rating
Opening
Time
110
%
15min
Minimum
125
%
1hr
Maximum
200 % 12sec Minimum
4min Maximum

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SP-ENG-210-HL0-07 2.3 12 | P a g e
NE060 Series
Nominal Capacity Rating: 6,000 BTUH
Maximum Ambient: 122°F
Temperature Classification: T4
Unit Weight: 115VAC – 97lbs, 230VAC – 98lbs, 460VAC – 142lbs
Model
Operating
Voltage
Range
(Volts)
Inrush
Current
(Start Up
Current)
(Amps)
Loading
Current
(Running
Current)
(Amps)
Recommended
Fuse Selection
(Amps)
KVA
Rating
SCCR
kA
Refrigerant
Type
Refrigerant
Amount
(ounces)
Low/High
Unit
Pressures
(psi)
NE060126 103.5-126.5 42.41 7.83
15 Amp Class
CC, CCMR Time
Delay *
1.0
5
R422d 18.00 97 / 377
NE060236 207-253 21.15 4.80
12 Amp Class
CC, CCMR Time
Delay *
0.9
5
R422d 18.00 103 / 343
NE060486 414-506 10.13 2.4
5 Amp Class
CC, CCMR Time
Delay *
0.9
5
R422d 18.00 103 / 343
NE080 Series
Nominal Capacity Rating: 8,000 BTUH
Maximum Ambient: 122°F
Temperature Classification: T4
Unit Weight: 115VAC – 102lbs, 230VAC – 103lbs, 460VAC – 142lbs
Model
Operating
Voltage
Range
(Volts)
Inrush
Current
(Start Up
Current)
(Amps)
Loading
Current
(Running
Current)
(Amps)
Recommended
Fuse Selection
(Amps)
KVA
Rating
SCCR
kA
Refrigerant
Type
Refrigerant
Amount
(ounces)
Low/High
Unit
Pressures
(psi)
NE080126 103.5-126.5 42.41 7.83
15 Amp Class
CC, CCMR Time
Delay *
1.0
5
R422d 19.00 98 / 370
NE080236 207-253 21.15 4.80
12 Amp Class
CC, CCMR Time
Delay *
0.9
5
R422d 19.00 94 / 370
NE080486 414-506 10.13 2.4
5 Amp Class
CC, CCMR Time
Delay *
0.9
5
R422d 19.00 94 / 370
* HACR Type Circuit Breakers or Time-delay Fuses with the following electrical characteristics
are recommended. Fast-acting fuses are not recommended.
%
of
Ampere
Rating
Opening
Time
110
%
15min
Minimum
125
%
1hr
Maximum
200
%
12sec
Minimum,
4min
Maximum

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SP-ENG-210-HL0-07 2.3 13 | P a g e
Options
The NE050, NE060 & NE080 Series Air Conditioners may be ordered with the following options.
Review the list below for the specifications and functions of the option(s) that apply to your unit.
Low Ambient
This option consists of circuitry to protect the compressor in a low ambient temperature
environment. The low ambient package is designed to provide an optimum constant low current
in the compressor motor during the non-cooling state. This option provides internal heat to the
compressor to protect it from stalls and hard starts during long periods of compressor off state.
High Temperature Alarm
This option provides an early warning capability to your enclosure to aid in the protection of your
expensive equipment. The High Temperature Alarm is programmed with a contact set point to
monitor the enclosure temperature limit that you require. When the enclosure temperature has
exceeded the maximum limit, the contact will activate to notify you that there is a problem in
achieving your cooling set point.
Default Settings:

105°F Dry Contact High Temperature Alarm Set Point

2°F Recovery Differential

3min Temperature Alarm Delay
At the default settings the contact initial condition is normally open. When the unit is powered
on and the temperature exceeds 105°F for a period longer than 3 minutes the contact will
activate. At this time the normally open contact will close. This state will remain until the
temperature has decreased to 103°F.
Refer to Advanced Digital Temperature Controller Programming section for details on changing
these parameters.
Celsius Programming
Celsius Programming option allows the user to control the Thermal Edge Air Conditioner in SI
units. This feature can be programmed into the digital temperature controller at time of
manufacturing.
External Heat Output
This option allows you to add an external heater to be located anywhere in your enclosure.
These external heaters are ideal for focusing on individual sections of the enclosure without
having a large capacity Built-in Heater.
External Heater capacities available are 100 Watt, 150 Watt, 200 Watt, 250 Watt, 300 Watt,
400 Watt, 550 Watt, 650 Watt & 950 Watt
Default Settings:

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SP-ENG-210-HL0-07 2.3 14 | P a g e

55°F Heat Set Point

3°F Differential
At the default settings the heater output turns on at 52°F and operates until the temperature has reached
55°F. Refer to Advanced Digital Temperature Controller Programming section on this manual for details
on changing these parameters.
Special Programming
All Thermal Edge Air Conditioners have a Special Programming option for selecting unique pre
in programmed settings for special requirements. Although most parameters are accessible in
our digital controller, this option allows you to receive a unit preset to your requirements without
the need to manually configure the unit. Refer to Advanced Digital Temperature Controller
Programming section for details on all default settings.
Adjustable Temperature Probe
The adjustable temperature probe provides you with a 12’ temperature probe that can be
installed anywhere in your enclosure. This allows you to have the flexibility to monitor and
maintain the temperature at any specific location of your enclosure.
Remote Controller
When having our Programmable Digital Controller mounted on the face of our Air Conditioner
does not fit your application, Thermal Edge offers the Remote Controller option. This option
moves the controller into your enclosure using a 10’ cable along with a universal, 16 gauge
powder coated steel mounting bracket. The Air Conditioner will have no openings on the face of
the unit. Below is a partial schematic showing the Remote Controller option wiring connections
to the digital controller.
Note: The Remote Controller option and a Filter Hood option, or a Louvered Filter Cover option,
are required for high pressure wash-down applications.
System Faults
If any of the critical control parameters exceed limits, the compressor is turned off and an alarm
condition is indicated on the front panel.
There are three main conditions that can shut the AC compressor down:

The condenser high temperature alarm

The evaporator coil alarm

The compressor thermal overload
In the event that the condenser coil overheats, a condenser high temperature alarm, HA2, will
flash on the display of the digital temperature controller and the compressor will turn off after a 3
minute time delay.
In the case that the evaporator coil ices up or there is a leak, an evaporator coil alarm, CA, will
flash on the display of the digital temperature controller and the compressor will turn off after a

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SP-ENG-210-HL0-07 2.3 15 | P a g e
2 minute time delay.
A thermal overload protects the compressor against faults. In the event that the snowflake
status LED is on, but is not flashing, and the compressor is not running, an internal fault may
have occurred. Refer to the Troubleshooting Guide in this manual.
Digital Temperature Controller Programming
For the end user this section will provide all the necessary information to view and change all
functions and parameters available to you.
HOW TO SEE THE SETPOINT
1. Press and immediately release the SET key. The display will show the setpoint value.
2. Press and immediately release the SET key or wait for 15 seconds to display the enclosure
temperature again.
HOW TO CHANGE THE SETPOINT
1. Press the SET key for more than 2 seconds to change the setpoint value.
2. The value of the setpoint will be displayed and the “F” LED starts blinking.
3. To change the SET value, press the UP or DOWN arrow key within 15 seconds.
4. To store the new setpoint value, press the SET key again or wait 15 seconds.
Note: The set value is stored even when the procedure is exited by waiting for the time -out to expire.
HOW TO ACCESS HIDDEN MENU 1
1. Enter the Programming mode by pressing the SET + DOWN arrow keys simultaneously for
3 seconds. The “F” LED starts blinking.
2. Select the required parameter by pressing the UP or DOWN arrow key. Press the SET
key to display its value.
3. Use the UP or DOWN arrow key to change its value.
4. Press SET to store the new value and move to the following parameter.
5. To exit: Press SET + UP arrow keys or wait 15 seconds without pressing a key.
Note: The set value is stored even when the procedure is exited by waiting for the time-out to expire.
HOW TO ACCESS HIDDEN MENU 2
1. Enter the Programming mode by pressing the SET + DOWN arrow keys simultaneously for
3 seconds. The “F” LED starts blinking.
2. Release the keys, then push the SET + DOWN arrows keys simultaneously, again for
more than 7 seconds.
The Pr2 label will be displayed immediately followed by the HY parameter.
3. Select the required parameter by pressing the UP or DOWN arrow key. Press the SET
key to display its value.
4. Use the UP or DOWN arrow key to change its value.
5. Press SET to store the new value and move to the following parameter.
6. To exit: Press SET + UP arrow keys or wait 15 seconds without pressing a key.
Note: The set value is stored even when the procedure is exited by waiting for the time -out to expire.

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HOW TO LOCK THE KEYPAD
1. Press and hold the UP and DOWN arrow keys simultaneously for more than 3 seconds.
2. The POF message will be displayed and the keyboard will be locked.
3. At this point, it will be possible only to see the setpoint or the MAX or MIN temperature stored.
4. If a key is pressed for more than 3 seconds the POF message will be displayed.
HOW TO UNLOCK THE KEYPAD
1. Press and hold the UP + DOWN arrow keys simultaneously for more than 3 seconds until the Pon
message is displayed.
Functions and Parameters
Function Operation Parameter Menu
Location
Factory
Default
Operating
Range
Unit
Auxiliary
Differential
Heater or Dry Contact
Hysteresis *1
Shy Hidden
Menu 2
3 1 - 45 °F
Maximum
Temperature
Alarm
Alerts with “HA” when
maximum temperature has
been exceeded
ALU Hidden
Menu 2
105 45 - 302 °F
Minimum
Temperature
Alarm
Alerts with “LA” when
minimum temperature has
been exceeded
ALL Hidden
Menu 2
45 -67 - 105 °F
*1Note: When both Heater and Dry Contact options are included, these parameters only control Heater Settings.
Dry Contact is controlled by ALU.
Alarms Signals
Message
Cause
Actions
“P1” Enclosure Probe Failure Start and stop of the compressor after 15 minute
intervals *2
“P2” Condenser Probe Failure No Action/Alarm Only
*2
“HA” Maximum Temperature Alarm: P1 > 105 °F for 3
minutes (after initial 30 min. startup delay)
Activate Dry Contact Relay
Function Operation Parameter Menu
Location Factory Default Operating Range Unit
Cooling Setpoint Set Desired Cooling
Temperature
SET Main 90 70 - 95 °F
Cooling
Differential
Control Hysteresis Hy Hidden
Menu 1
5 1 - 45 °F
Compressor
Protection
Anti-short cycle delay
(Do not set to less than 3
minutes.)
AC
Hidden
Menu 2
3 3 - 50 min
Probed Displayed
Select Display Probe
P1 – Enclosure Temperature
P2 – Condenser Temperature
Lod
Hidden
Menu 2
P1 P1 / P2 N/A
Auxiliary
Setpoint Setpoint for Dry Contact *1
/ Heater
SAA Hidden
Menu 2
105 / 55 -67 - 302 °F

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“LA” Minimum Temperature Alarm: P1 < 45 °F for 3
minutes (after initial 30 min. startup delay)
No Action/Alarm Only *2
“HA2” Condenser High Temperature Alarm: P2 > 164 °F for
3 minutes
Compressor turned Off by pressure switch if
temperature continues to rise *2
“LA2” Condenser Low Temperature Alarm: P2 < 50 °F for 3
minutes
No Action/Alarm Only *2
“CA” Evaporator Coil Alarm: Low Pressure for 2 minutes Compressor Off
*2
“noP” Invalid Probe Selected: Low Evaporator Coil No Action/Alarm Only
*2Note: When both Heater and Dry Contact options are included, Dry Contact (Alarm Contact) Relay is
activated.
ALARM RECOVERY
If the compressor is turned off due to an alarm, it will be able to res tart after the AC anti short-cycle time
delay. (Parameter AC = 3 minutes)
Probe alarm P1 is cleared with no time delay after the fault is cleared.
Probe alarm P2 starts and stops with no time delay.
Temperature alarm HA automatically clears as soon as the temperature returns to below 105°F (the ALU setpoint) -2°F
= 103°F. Temperature alarm LA automatically clears as soon as the temperature returns to above 45°F (the ALL
setpoint) +2°F = 47°F. Temperature alarm HA2 automatically clears as soon as the condenser coils temperature
returns to below 164°F. Temperature alarm LA2 automatically clears as soon as the condenser coils temperature
returns to above 60°F. Temperature alarm CA automatically clears as soon as the pressure returns to normal.
Preventative Maintenance
Air conditioners require regular cleaning of the condenser air inlet filter. Wash filter often if
washable using proper cleaning compound and back flushing the dirt out, or replace if not
washable whenever it appears physically dirty. Restriction to the flow of air over the condenser
coil will degrade the performance of the equipment, cause it to overheat, reduce cooling and
can damage the compressor. The overload switch in the compressor may cause the
compressor to cycle if the condensing coil pressure becomes too high due to air restriction. A
further safety feature is the refrigerant high pressure cut off switch which will stop the
compressor if the condensing pressure becomes too high due restricted condenser air flow or
some other cause.
Restricted air flow due to neglecting a dirty filter will cause unit to repeatedly turn off and then
turn back on after it cools off. An operation in this safety cycling mode will eventually damage the
equipment and void the warranty.
Refer to Field Serviceable Parts section in this manual for details on parts that can be changed
to help increase the uninterruptable life of the Air Conditioner.
Air Filter Service
Remove the air conditioner filter and wash if washable or replace if not washable. Dry
thoroughly before replacing. THERMAL EDGE Air Filter Treatment Spray in aerosol cans or
spray bottle is recommended to enhance air filter efficiency. Replacement filters are readily
available from THERMAL EDGE Customer Service. DO NOT operate the air conditioner without

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the air filter. Such operation will allow the condenser coil to become dirty and lose efficiency,
causing overheating and diminished cooling capacity. Periodically remove dust from the
components inside the condenser section of the air conditioner with a compressed air blower
Very dirty condensing coils must be back-flush cleaned using proper commercial coil cleaning
compounds and thorough back-flush rinsing. Refer to directions on the cleaning compounds
selected. Acid wash is not recommended as it reduces the life of the coil.
Note: Do not use solvents to clean the programmable thermostat. Wipe with mild soap and
water.
Condenser and Evaporator Fans
Thermal Edge air conditioners use high efficiency, long life, sealed ball bearing fans engineered
for optimum performance that require no maintenance. Keep fan blades clean for optimal
performance. Fans are removable and attached by plug in connections.
Compressor
Thermal Edge uses hermetically factory sealed compressors that are quiet, low vibration and
are maintenance free. Thermal overload devices are installed to protect the compressor from
damage due to overheat and short cycle faults. If the compressor thermal overload fails, it is
recommended to return the unit to Thermal Edge customer service for proper replacement.
Note that the rotary compressor runs with compressed refrigerant gas on the outer case and
therefore is hot to the touch.
Loss of Refrigerant
Thermal Edge air conditioners are meticulously leak and run tested after assembly. If a leak in
the system should develop due to shipping damage or mechanical vibration, the leak must be
detected, repaired and the refrigerant charge restored to the system by a qualified refrigeration
professional. If pressure gauges are connected to the hermetic system, be prepared to replace
lost refrigerant resulting from connection and disconnection. It is recommended to use stubby
gauges with low loss fittings to minimize refrigerant loss.
Field Serviceable Parts
Thermal Edge carefully designs and selects components with the maximum life expectancy.
Due to OEM manufacturing tolerances, poor unit maintenance or extreme operating conditions,
components may fail before their maximum life expectancy. The table below lists parts that are
serviceable in the field by an Air Conditioner Technician.
Part Description Thermal Edge Part #
Digital Controller 52111-3
Low Pressure Switch 38151-1-3
High Pressure Switch 38176-1-3
Condenser Fan Cut-In Pressure Switch 38001-1-3
Temperature Probe, 0.25m 52126-1
Temperature Probe, 1.5m 52126-2-2

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Temperature Probe Mounting Clip 52126-250C
Thermal Expansion Value TXV NE050 = 32027-1, NE060 = 32002-1, NE080 = 32003-1
Compressor
NE050 = 31529-1 for 120VAC, 31011-1 for 230VAC/480VAC
NE060 = 31020-1 for 120VAC, 31011-1 for 230VAC/480VAC
NE080 = 31020-1 for 120VAC, 31025-1 for 230VAC/480VAC
Compressor
Thermal Overload
NE050 = N / A for 120VAC, 31011-2 for 230VAC/480VAC
NE060 = 31020-2 for 120VAC, 31011-2 for 230VAC/480VAC
NE080 = 31020-2 for 120VAC, 31025-2 for 230VAC/480VAC
Gasket Installation Kit 71403-N568
Evaporator Fan NE050 = 41005-1-1 for 120VAC, 41005-2-1 for 230VAC/480VAC
NE060/080 = 41037-1-1 120VAC, 41037-2-1 for 230VAC/480VAC
Condenser Fan NE050 = 41055-1-1 for 120VAC, 41055-2-1 for 230VAC/480VAC
NE060/080 = 41045-1-1 120VAC, 41045-2-1 for 230VAC/480VAC
Filter Media 44203 (12 pack)
Capacitor NE050 = 54006-1 for 120VAC/230VAC/480VAC
NE060/080 = 54004-1 for 120VAC, 54001-1 for 230VAC/480VAC
Safety Information
Unit is carefully designed to restrict access to movable parts to minimize any potential injury.
This Air Conditioner has been tested by UL to meet the safety requirements of the UL484
specification. When working with the Thermal Edge Air Conditioner always makes sure shroud
is installed. Verify proper voltage is applied to unit as specified in the UL label of the Air
Conditioner. In the event of a field service repair, power down unit and disconnect power from
unit. It is always recommended to use a licensed Air Conditioner Technician for internal
diagnostics and repairs issues.
Contact Thermal Edge technical support for further details on opening the unit and
troubleshooting tips.
Troubleshooting Guide
The following guide provides a flow chart to identify a problem, determine the root cause and
identify the action needed to correct an issue.

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