Delta-T NE040-D48 Series User'S & Technical Manual Download Page 17 | Manualshive

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1800 Hurd Drive ● Irving, Texas 75038 ● (972) 580-0200 ● (888) 580-0202 ● Fax (972) 580-0277

URL: www.thermal-edge.com ● Email:

[email protected]

SP-ENG-210-D48-06 Rev 2.4 17 |

P a g e

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

52112-2

DC-DC Converter (for Digital Controller)

52314-1

Low Pressure Switch

38151-1-3

High Pressure Switch

38006-1-3

Condenser Fan Cut-In Pressure Switch

38001-1-3

Temperature Probe

52126-1

Thermal Expansion Value TXV

32012-1

Compressor

31509-1

48 VDC Compressor Controller

31509-2

Gasket Installation Kit

71401-N234

Evaporator Fan

41010-4-1

Condenser Fan

41010-6-1

Filter Media

44202 (12 pack)

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 using the power on/off switch 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.

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Summary of Contents for NE040-D48 Series

Page 1: ...User Technical Manual NE040 D48 Series Rev 2 4 ...

Page 2: ...Controller option description 2 0 10 01 2018 B Slotnick Updated warranty 2 1 02 19 2019 B Slotnick Updated mounting instructions alarm settings RMA procedure 2 2 06 18 2019 B Slotnick Updated preliminary testing instructions compressor protection default setting field serviceable parts 2 3 08 16 19 B Slotnick Updated preventative maintenance warranty information 2 4 06 02 20 B Slotnick Updated Sys...

Page 3: ...r 4 Moving the Air Conditioner 5 Unit Label 5 Operation 6 Preliminary Testing 6 Mounting the Air Conditioner 7 Unit Specifications 8 Options 10 System Faults 13 Digital Temperature Controller Programming 13 Preventative Maintenance 16 Field Serviceable Parts 17 Safety Information 17 Troubleshooting Guide 18 Physical Dimensions 21 Electrical Schematic 23 Warranty Information 24 Return Material Auth...

Page 4: ...specting 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...

Page 5: ...el 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 proper...

Page 6: ...hat 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 s...

Page 7: ...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 terminal block Ensure that the power supplied is compatible with the air conditioner...

Page 8: ...ing 4 000 BTUH Standard Maximum Ambient 131 F Unit Weight 103 lbs Model Operating Voltage Range Volts Loading Current Running Current Amps SCCR Short Circuit Current Rating Amps Recommended Fuse Selection Amps KVA Rating Refrigerant Type Refrigerant Amount ounces Low High Unit Pressures psi NE040D48 43 53 VDC 25 3 40 A Fast Acting 1 1 R134a 13 25 39 307 SCCR rating is based on the SCCR rating for ...

Page 9: ...0 Hurd Drive Irving Texas 75038 972 580 0200 888 580 0202 Fax 972 580 0277 URL www thermal edge com Email support thermal edge com SP ENG 210 D48 06 Rev 2 4 9 P a g e THIS PAGE IS INTENTIONALLY LEFT BLANK ...

Page 10: ...arm Delay At the default settings the Dry Contact initial conditions are normally open and or normally closed When the unit is powered on and the temperature exceeds 105 F for a period longer than 3 minutes the Dry Contact will activate At this time the normally open contact will close and the normally closed contact will open This state will remain until the temperature has decreased to 103 F Not...

Page 11: ...lities for high ambient application upgrades from our Standard Maximum Ambient temperature of 125 F With this option we can optimize the Air Conditioner during manufacturing to achieve improved performance at high ambient conditions Condenser Filters For environments with airborne dirt dust oil etc these air conditioners can be ordered with a 2 pleated extended surface area filter Corrosion Protec...

Page 12: ...talled 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 us...

Page 13: ...e 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 functi...

Page 14: ...alue 5 Press SET to store the new value and move to the following parameter 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 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...

Page 15: ...rature Alarm P2 153 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 Contac...

Page 16: ...er Service DO NOT operate the air conditioner without 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 comm...

Page 17: ... 38006 1 3 Condenser Fan Cut In Pressure Switch 38001 1 3 Temperature Probe 52126 1 Thermal Expansion Value TXV 32012 1 Compressor 31509 1 48 VDC Compressor Controller 31509 2 Gasket Installation Kit 71401 N234 Evaporator Fan 41010 4 1 Condenser Fan 41010 6 1 Filter Media 44202 12 pack Safety Information Unit is carefully designed to restrict access to movable parts to minimize any potential injur...

Page 18: ...is on position ON OFF Toggle Switch then Retry Verify input power meets voltage requirements as shown in the UL label YES If problem is still present contact technical support Unit Overheats Insufficient Cooling Is Filter Clean NO Clean Replace Filter YES Are Condenser Evaporator Fans ON NO Check for Faulty Fan replace YES Is Condenser Coil dirty YES Clean Coil NO NO Is Evaporator Coil Frozen Iced...

Page 19: ...essor Use meter3 Check for faulty evaporator fan3 Measure Temperature at Evaporator Verify Heat Load Requirements Is unit capacity adequate for internal head load Possible low refrigerant Is compressor thermal overload open Use ohm meter 3 Check for error code CA LA HA LA2 HA2 P1 or P2 YES NO Check contactor circuit Does it have power 3 NO YES Refer to Alarm Signals in Digital Temperature Controll...

Page 20: ...hind controller CA YES NO Check Low Pressure Switch Connections and Verify Pressure switch is closed Use meter 3 P1 or P2 NO YES Check probe connections potential faulty probe LA LA2 HA HA2 YES Refer to Alarm Signals in Digital Temperature Controller Programming Section Fuse Circuit Protection Nuisance Trip Is fuse opening as soon as unit turns on NO YES Check incoming power supply and connections...

Page 21: ...a g e Physical Dimensions Water overflow excessive Check drain is it plugged YES NO Clean condensate pan and drain add 1 tbsp bleach to upper pan monthly to kill mold Is Air Conditioner sealed against enclosure properly tightly sealed and door closed YES Contact Customer Service NO Ensure air tight seal between air conditioner and enclosure Make sure door is closed ...

Page 22: ...0 Hurd Drive Irving Texas 75038 972 580 0200 888 580 0202 Fax 972 580 0277 URL www thermal edge com Email support thermal edge com SP ENG 210 D48 06 Rev 2 4 22 P a g e THIS PAGE IS INTENTIONALLY LEFT BLANK ...

Page 23: ...10 D48 06 Rev 2 4 23 P a g e Electrical Schematics System Schematic Digital Controller Schematic Note Schematics apply to all voltages optional accessories wiring not provided in this document If you require electrical schematic with options contact our technical support and provide your model number Drawing 51201 D48 Rev D NE040D48 Cool Only ...

Page 24: ...part except at the Thermal Edge factory in Dallas Texas Use of equipment for other than its designed purpose or operating conditions Operation in harsh oily corrosive or other abnormal environmental conditions without the proper filtration sealing protective coatings and or weather protection or cosmetic corrosion that does not affect operation Damage to hermetic system resulting from continuous o...

Page 25: ...l Number Serial Number Customer name and contact info email phone number and address Shipping method Pack unit in a suitable packing for shipment preferably the original packaging if available Air Conditioners must be returned in an upright position properly secured to a pallet Tip unit to empty water from the evaporator and boil off pans Clearly mark the RMA number on the box Customer will pay al...

Page 26: ...ssembly channels facing UP 4 Starting from the left connect the wires by inserting them into the lower receptacles located on the front of connector in the following order NOTE If using stranded wires it may be difficult to insert into the receptacles without releasing the spring tension as described below in the removal instructions The wires can be tinned or pin terminals as shown above or pin f...

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