United Appliances Air Handler Series Owner's Manual
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United Appliances Air Handler Series Owner's Manual

United Appliances Air Handler Series Owner's Manual

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Owner's Manual
Original Instructions
Air Conditioners | Air Handler
Thank you for choosing our product. Please read this Owner's Manual carefully before operation
and retain it for future reference. If you have lost the Owner's Manual, please contact the local
agent or visit www.unitedappliances.com for the electronic version.
NOTE：Actual product may be different from graphics, please refer to actual products.

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  • Page 1 Owner's Manual Original Instructions Air Conditioners | Air Handler Thank you for choosing our product. Please read this Owner’s Manual carefully before operation and retain it for future reference. If you have lost the Owner's Manual, please contact the local agent or visit www.unitedappliances.com for the electronic version.
  • Page 2 Models: UADH24-DD3D1 UADH30-DD3D1 UADH36-DD3D1 UADH42-DD3D1 UADH48-DD3D1 UADH60-DD3D1...
  • Page 3 To Users Thank you for selecting Gree product. Please read this instruction manual carefully before installing and using the product, so as to master and correctly use the product. In order to guide you to correctly install and use our product and achieve expected operating effect, we hereby instruct as below: This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge,...
  • Page 4 Exception Clauses Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons: Damage the product due to improper use or misuse of the product. Alter, change, maintain or use the product with other equipment without abiding by the instruction manual of manufacturer.

  • Page 5: Table Of Contents

    Contents 1 Safety Precautions ..............1 2 Product Introduction ............. 3 2.1 Product Description ..............3 2.2 Operating Range ................ 3 2.3 Optional Accessories..............3 2.4 Physical Dimension ..............3 2.5 Names of Main Parts ..............4 2.6 General Information ..............4 2.7 Dip Switch Configuration ............
  • Page 6 7.1 Drain Pipe ................32 7.2 Notice before Seasonal Use............. 32 7.3 Maintenance after Seasonal Use ..........32 7.4 Parts Replacement..............32 8 After-Sales Service .............. 33...

  • Page 7: Safety Precautions

    Air Handlers 1 Safety Precautions This product can’t be installed at corrosive, inflammable or explosive environment or the place with special requirements, such as kitchen. Otherwise, it will affect the normal operation or shorten the service life of the unit, or even cause fire hazard or serious injury.
  • Page 8 Air Handlers Electrical shock hazard: Failure to follow this warning could result in personal injury or death. Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label.

  • Page 9: Product Introduction

    Air Handlers The first 6 inches of supply air plenum and ductwork must be constructed of sheet metal as required by NFPA 90B. Metal plenum of duct may be connected to the non-combustible floor base for downflow. Exposing combustible non-metal. material to the supply opening of a downflow unit can cause a fire resulting in property damage, personal injury or death.

  • Page 10: Names Of Main Parts

    Air Handlers Unit: inch(mm) Dimension Model UADH24-DD3D1 18-1/8 21-1/4 43-1/2 11-5/8 16-3/4 UADH30-DD3D1 (460) (540) (1105) (295) (426) UADH36-DD3D1 21-1/4 21-1/4 48-3/16 11-5/8 UADH42-DD3D1 (540) (540) (1224) (295) (508) UADH48-DD3D1 24-13/16 21-1/4 11-5/8 UADH60-DD3D1 (630) (540) (1320) (295) (508) NOTE: The outdoor unit models that can be matched with the indoor unit can be found on the AHRI website.

  • Page 11: Dip Switch Configuration

    Air Handlers 2.7 Dip Switch Configuration Set the indoor fan speed through the eight dip switches of the indoor main control board. The higher level, the higher speed of the indoor unit fan. Operation Instruction is below: Dip switch settings must be completed before power on the unit. After the unit is shut down or stopped at the temperature point, the indoor unit will delay for a few minutes and then shut down.

  • Page 12: Fan Performance Data

    Air Handlers Model Level Heat (SA2) Cool (SA1) Level 1 Level 2 Level 3 Level 4-Default UADH42-DD3D1 Level 5 Level 6 Level 7 Level 8 Level 1 Level 2 Level 3 Level 4 UADH48-DD3D1 Level 5 Level 6-Default Level 7 Level 8 Level 1 Level 2...
  • Page 13 Air Handlers UADH24-DD3D1 Model Static pressure:Inches W.C.(Pa) Level 0.15 (25) (37) (50) (75) (100) (125) (150) (175) (200) (225) (250) Speed 1220 1120 1060 990 3(CFM) Speed 1380 1250 1120 1070 1020 920 4(CFM) Speed 1550 1490 1440 1390 1290 1180 1090 970 5(CFM) Speed 1620 1540 1500 1450 1400 1360 1250 1130 960...
  • Page 14 Air Handlers UADH36-DD3D1 Model Static pressure:Inches W.C.(Pa) Level 0.15 (25) (37) (50) (75) (100) (125) (150) (175) (200) (225) (250) Speed 1050 950 1(CFM) Speed 1220 1120 1020 2(CFM) Speed 1380 1260 1200 1100 950 3(CFM) Speed 1630 1580 1500 1430 1370 1200 1050 970 4(CFM) Speed 1710 1650 1600 1560 1480 1400 1250 1130 960...
  • Page 15 Air Handlers UADH48-DD3D1 Model Static pressure:Inches W.C.(Pa) Level 0.15 (25) (37) (50) (75) (100) (125) (150) (175) (200) (225) (250) Speed 1640 1500 1(CFM) Speed 1680 1560 1500 2(CFM) Speed 1810 1690 1620 1550 3(CFM) Speed 1930 1830 1770 1710 1580 1480 4(CFM) Speed 2200 2110 2040 1980 1860 1720 1620 1490...

  • Page 16: Preparative For Installation

    Air Handlers 3 Preparative for Installation 3.1 Pre-Installation Instruction 3.1.1 Checking Product Received After receiving the product, please check if there is any damage caused by transportation. Shipping damage is the responsibility of the carrier. Verify the model number, specifications and accessories are correct prior to installation. The distributor or manufacturer will not accept claims from dealers for transportation damage or installation of incorrectly shipped units.
  • Page 17 Air Handlers Immediate hazards which will result in property damage, product damage, severe personal injury or death. Hazards or unsafe practices could result in property damage, product damage, severe personal injury or death. Hazards or unsafe practices which may result in property damage, product damage, severe personal injury or death.

  • Page 18: Installation

    Air Handlers Other methods of grounding are permitted if performed in accordance with the “National Electric Code” (NEC)/ “American National Standards Institute” (ANSI)/ “National Fire Protection Association” (NFPA) 70 and local/state codes. In Canada, electric grounding conforms to the Canadian electric code CSA c22.1. Failure to observe this warning can result in electrical shock that can cause personal injury.

  • Page 19: Location

    Air Handlers Please check the equipment model number to ensure the unit is appropriately sized for the condensing unit. If an incorrect unit is supplied, it must not be installed and it is to be returned to the supplier. The manufacturer assumes no responsibility for the installation of incorrectly delivered units.

  • Page 20: Piping Work

    Air Handlers 4.3 Piping Work 4.3.1 Specification of Connection Pipe External diameter (inch) Model Gas pipe Liquid pipe UADH24-DD3D1 UADH30-DD3D1 UADH36-DD3D1 Φ3/4 Φ3/8 UADH42-DD3D1 UADH48-DD3D1 UADH60-DD3D1 4.3.2 Piping Preparation The gas pipe connection method adopts solder connection, the liquid pipe connection method is screw connection.

  • Page 21: Screw Connection

    Air Handlers First, wrap the rubber grommet with water saturated cloth, and then weld off the cap closures from the gas pipes. Then weld the gas pipes with the connecting pipes. 4.3.2.2 Screw Connection Pipe diameter (inch) Tightening torque (N·m) 15-30 35-40 45-50...

  • Page 22: Condensate Removal

    Air Handlers Pipe diameter (inch) Tightening torque (N·m) Φ5/8 60-65 Φ3/4 70-75 Φ7/8 80-85 4.4 Condensate Removal It is not allowed to connect the condensate drain pipe into waste pipe or other pipelines which are likely to produce corrosive or peculiar smell to prevent the smell from entering indoors or corrupt the unit.

  • Page 23: Electric Heater (Optional)

    Air Handlers must comply with National Fire Protection Association as tested by U/L Standard 181 for Class I Air Ducts. Check local codes for requirements on ductwork and insulation. Duct system must be designed within the range of external static pressure the unit is designed to operate against.
  • Page 24 Air Handlers unsafe. Refer to the “Fan Performance Data” section of this manual, otherwise it is possible to cause an exception and dry risk of electric heating. The supply ducts that are 5 feet away from electric heating must be at least 1 feet away from other combustibles or walls. 4.6.1 Electric Heater Kits Available Ref.

  • Page 25: Electrical Installation

    Air Handlers 7) Connect ground wire to ground lug; M6 screws are required for grounding screws when installing electric heating. 8) Knock off appropriate area of the plastic circuit breaker cover on the access panel of the air handler. Knock off the holes according to the actual installation number and positions of circuit breakers.
  • Page 26 Air Handlers Air Handlers . The unit’s operating power must be within the nominal range stated in the instruction manual. Use a specialized power circuit for the air conditioner. Do not draw power from another power circuit. . The air conditioner circuit should be at least 1.5m away from any inflammable surface.

  • Page 27: Electrical Parameters

    Air Handlers 4.7.2 Electrical Parameters Minimum Maximum Model Power supply circuit overcurrent ampacity (A) protection (A) UADH24-DD3D1 UADH30-DD3D1 UADH36-DD3D1 208/230V-1Ph-60Hz UADH42-DD3D1 UADH48-DD3D1 UADH60-DD3D1 ①. Fuse is located on the main board. ②. Install a circuit breaker at every power terminal near the units (indoor unit and thermostat) with at least 3mm contact gap.
  • Page 28 Air Handlers For strand wires (as shown below): 1) Use wire cutters to cut off the wire end and then peel away about 10mm of the insulation layer. 2) Use a screwdriver to unscrew the terminal screw on the terminal board. 3) Use a round terminal fastener or clamp to fix the round terminal firmly on the peeled wire end.
  • Page 29 Air Handlers powered on. ②. Match the terminal numbers and wire colors with the colors indicated in the indoor unit. ③. Wrong wire connection may burn the electrical components. ④. Connect the wires firmly to the wiring box. Incomplete installation may lead to fire hazard.
  • Page 30 Air Handlers Air Handlers UADH42-DD3D1, UADH48-DD3D1, UADH60-DD3D1 Electrical wiring of indoor units (Only for air handler with electric heater)
  • Page 31 Air Handlers UADH24-DD3D1, UADH30-DD3D1, UADH36-DD3D1...
  • Page 32 Air Handlers Air Handlers UADH42-DD3D1, UADH48-DD3D1, UADH60-DD3D1 (only for air handler with BLR 5000W/240V, BLR 8000W/240V or BLR 10000W/240V)
  • Page 33 Air Handlers UADH48-DD3D1, UADH60-DD3D1 (only for air handler with BLR 15000W/240V or BLR 20000W/240V) NOTE: Y means Compressor control signal for the outdoor unit; B which is energized under the heating mode means 4-way valve control signal; D means defrosting signal;...
  • Page 34 Air Handlers Air Handlers R means 24V AC power supply; C means 24V common; G means indoor unit fan signal for the indoor unit; W1 means heater control signal; L reserved function. NOTE: For cooling only unit, there is no need to connect the B and D terminals. NOTE: When outdoor defrosts, D of outdoor unit will send 24V signal to avoid cold winds.

  • Page 35: Installation Check And Trial Run

    Air Handlers 5 Installation Check and Trial Run 5.1 Checking Items after Installation Problems might happen due to Items to be checked Check improper installation Check if each parts of the unit have The unit might fall off, vibrate or emit been installed reliably.

  • Page 36: Common Malfunction And Elimination

    Air Handlers Air Handlers All the scattered objects should be removed, especially metal filing, thrum and clip. Check if the unit appearance and piping system has been damaged during transportation or handling. Check if the terminals are loose and the phases are correct. 5.2.2 Trial Run Trial run can be operated by professional personnel only after above items have been checked (items to be checked as per actual condition).
  • Page 37 Air Handlers service center and show phenomena and models. Following circumstances are not malfunction. “Malfunction” Reason When unit is started Overload protection switch immediately after it is makes it run after 3 minutes Unit doesn’t run. just turned off. delay. When power is turned Standby operating for about 1 minute.

  • Page 38: Maintenance And Care

    Air Handlers Air Handlers Different running indicator flashing light means different system failure. malfunction Running Indicator status Remark Indoor Jumper cap failure Light out 3S then flash once. Indoor fan failure Light out 3S then flash twice. Flash means light on 0.5S then light out 0.5S.

  • Page 39: After Sales Service

    Air Handlers 8 After-Sales Service In case the air-conditioning unit you bought has any quality problem or you have any inquiry, please contact the local after-sales service agency designated by factory. Warranty should meet the following requirements: First run of the unit should be operated by professional personnel from factory appointed service center.

  • Page 40: Manufacturer's Limited Warranty

    MANUFACTURER’S LIMITED WARRANTY WARRANTOR. This Limited Warranty is offered by Dragon Trade International Corp , 1205 Highland Avenue, National City, California 91950, (“Manufacturer”) on the Products described below. PRODUCT. This Limited Warranty applies to the following products, residential and commercial air conditioner units manufactured by Manufacturer, collectively (“Product”). WHO MAY USE THIS WARRANTY .
  • Page 41 LAW, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES. NO ONE IS AUTHORIZED TO CHANGE THIS LIMITED WARRANTY IN ANY RESPECT OR CREATE ANY OTHER OBLIGATION OR LIABILITY FOR MANUFACTURER IN CONNECTION WITH THE PRODUCT OR ANY UNITED APPLIANCES EQUIPMENT. 5.07 UNDER NO CIRCUMSTANCES SHALL MANUFACTURER BE LIABLE FOR ANY...

  • Page 42: How To Obtain Warranty Service

    5.10 In the event of a Product failure, the Product should be de-energized, but otherwise should remain as-is, where-is until inspected by an authorized technician, unless there is a life/safety threat or the likelihood of resultant physical damage to other property, in which case all appropriate safety precautions should be taken by qualified persons.
  • Page 43 COMPETENT JURISDICTION CONSUMER AND MANUFACTURER AGREE THAT ANY DISPUTE, CLAIM OR CONTROVERSY ARISING OUT OF THIS AGREEMENT OR THE USE OF THE PRODUCT, INCLUDING ISSUES OF ARBITRABILITY, SHALL, ("DISPUTE"), AT THE OPTION OF EITHER PARTY, BE RESOLVED BY BINDING ARBITRATION BEFORE A SINGLE NEUTRAL ARBITRATOR ADMINISTERED BY JUDICIAL ARBITRATION AND MEDIATION SERVICES ("JAMS") UNDER ITS APPLICABLE ARBITRATION RULES IN EFFECT AT THE TIME THE DISPUTE ARISES.

  • Page 44: General Provisions

    8.03 Commencing the Arbitration. All claims in arbitration are subject to the same statues of limitations that would apply in court under applicable law. The Party bringing the claim must demand arbitration in writing and deliver the written demand by hand or first-class mail to the other party within the applicable statute of limitations period.
  • Page 45 RETURN AND EXCHANGE If you have any issues with your product or not entirely satisfied, please visit https://unitedappliances.com/us/returns-exchange/ or scan the QR code for all the steps.
  • Page 46 Imported by Dragon Trade International Corp. 614 5th Ave. Ste D, San Diego CA 92101-6964...

This manual is also suitable for:

Uadh24-dd3d1Uadh30-dd3d1Uadh36-dd3d1Uadh42-dd3d1Uadh48-dd3d1Uadh60-dd3d1

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