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Air Handlers
Models:
GUD24AH2/E-D(U)
GUD36AH2/E-D(U)
GUD48AH2/E-D(U)
GUD60AH2/E-D(U)

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Summary of Contents for Gree GUD24AH2/E-D

  • Page 1 Air Handlers Models: GUD24AH2/E-D(U) GUD36AH2/E-D(U) GUD48AH2/E-D(U) GUD60AH2/E-D(U)
  • 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...
  • 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 ..............4 2.3 Physical Dimension ..............4 2.4 Names of Main Parts ..............5 2.5 General Information ...............6 2.6 Refrigerant charge ..............6 2.7 Dip Switch Configuration ............7 2.8 Fan Performance Data ............8 3 Preparative for Installation ..........
  • 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 7.5 Unventilated Areas ............... 33 8 After-Sales Service ............33 9 Qualification of Worker ........... 33 10 Transportation, Marking and Storage for Units that Employ Flammable Refrigerants ........
  • Page 7 12 Sealed Electrical Components shall be Replaced ..38 13 Intrinsically Safe Components must be Replaced ..38 14 Cabling ................38 15 Detection of Flammable Refrigerants ......38 16 Removal and Evacuation ..........39 17 Charging Procedures ............ 40 18 Decommissioning ............
  • Page 8: 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 9 Air Handlers Appliance filled with flammable magas R32. Before install the appliance, read the installation manual first. Before use the appliance, read the owner’s manual first. Before repair the appliance, read the service manual first. Do not use means to accelerate the defrosting process or to clean,other than those recommended by the manufacturer.
  • Page 10: Product Introduction

    6 inches from the solid bottom. 2 Product Introduction 2.1 Product Description The GREE air handler offer the perfect combination of superior product quality,...
  • Page 11: Operating Range

    2.2 Operating Range — Cooling Heating Indoor temperature 64.4°F(18°C)~89.6°F(32°C) 50°F(10°C)~80.6°F (27°C) 2.3 Physical Dimension Unit: inch(mm) Dimension Model 18-1/8 21-1/4 43-1/2 11-5/8 16-3/4 GUD24AH2/E-D(U) (460) (540) (1105) (295) (426) 21-1/4 21-1/4 48-3/16 11-5/8 GUD36AH2/E-D(U) (540) (540) (1224) (295) (508) GUD48AH2/E-D(U)
  • Page 12: Names Of Main Parts

    Air Handlers 2.4 Names of Main Parts 2.4.1 Vertical installation 2.4.2 Lying installation NOTE: When installing as shown in the figure, the refrigerant sensor needs to be installed in the position shown in the figure, remove the fixing screws of the refrigerant sensor and adjust the internal wiring to ensure that the inner wiring will not meet the sharp side.
  • Page 13: General Information

    Where a single REMOTE REFRIGERANT DETECTION system sensor is used in a room with multiple units, this requirement shall apply to all units in the room which do not have a dedicated REFRIGERANT DETECTIONSYSTEM. 2.5 General Information Unit: mm Model Filter size GUD24AH2/E-D(U) 420×516×15 GUD36AH2/E-D(U) 490×516×15 GUD48AH2/E-D(U) 585×516×15 GUD60AH2/E-D(U) 585×516×15...
  • Page 14: Dip Switch Configuration

    1.32 1.36 1.40 ⑥. The minimum airflow corresponding to different products is as follows: GUD24AH2/E-D(U):250m³/h GUD36AH2/E-D(U):285m³/h GUD48AH2/E-D(U), GUD60AH2/E-D(U): 455m³/h "LEAK DETECTION SYSTEM installed. Unit must be powered except for service." If any remote located REFRIGERANT SENSOR is employed to detect leaked refrigerant, such a remote located REFRIGERANT SENSOR shall also apply to this marking or be accompanied by such instructions.
  • Page 15: Fan Performance Data

    Model Level Heat (SA2) Cool (SA1) Level 1 Level 2 Level GUD24AH2/E-D(U) 3-Default Level 4 Level 5 Level 1 Level 2 Level GUD36AH2/E-D(U) 3-Default...
  • Page 16 Air Handlers Model GUD24AH2/E-D(U) Static pressure: inwg(Pa) Level 0.15 (25) (37) (50) (75) (100) (125) (150) (175) (200) (225) (250) Speed 1380 1250 1120 1070 1020 920 — — — — — 3(CFM) Speed 1700 1630 1580 1530 1450 1400 1370 1270 1150 970 —...
  • Page 17: Preparative For Installation

    Air Handlers Model GUD60AH2/E-D(U) Static pressure: inwg(Pa) Level 0.15 (25) (37) (50) (75) (100) (125) (150) (175) (200) (225) (250) Speed 1850 1720 1650 1600 — — — — — — — — 1CFM) Speed 1920 1800 1730 1650 1480 —...
  • Page 18: Important Safety Instructions

    Air Handlers responsibilities for equipment installed in violation of any codes or regulations. 3.1.4 Replacement Parts When reporting shortages or damages, or ordering repair parts, give the complete product model and serial numbers as stamped on the product. Replacement parts for this product are available through your contractor or local distributor.
  • Page 19 Air Handlers Due to high system pressure and electrical shock in potential, installation and service work can be dangerous. Only trained and qualified persons are permitted to install or service this equipment. Observe all warnings contained in this manual and labels/tags attached to the equipment. This product factory...
  • Page 20: Installation

    Air Handlers or air handler is installed in an enclosed area such as a garage, utility room or parking area and a carbon monoxide producing device is operated therein, there must be adequate ventilation directly to outside. This ventilation is necessary to avoid the danger of CO poisoning which can occur if a carbon monoxide producing device continues to operate in the enclosed area.
  • Page 21 Air Handlers refrigerant tubing as much as possible. Do not install the air handler in a location either above or below the condenser that violates the instructions provided with the condenser. Service clearance is to take precedence. Allow a minimum of 24” in front of the unit for service clearance.
  • Page 22: Piping Work

    Air Handlers 4.3 Piping Work 4.3.1 Specification of Connection Pipe External diameter (inch) Model Gas pipe Liquid pipe GUD24AH2/E-D(U) GUD36AH2/E-D(U) Φ3/4 Φ3/8 GUD48AH2/E-D(U) GUD60AH2/E-D(U) 4.3.2 Piping Preparation The connection of the gas pipe and the connection of the liquid pipe are screw connections.
  • Page 23: Condensate Removal

    Air Handlers Pipe diameter (inch) Tightening torque (N·m) Φ1/4 15-30 Φ3/8 35-40 Φ1/2 45-50 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 24 Air Handlers Sheet metal ductwork run in unconditioned spaces must be insulated and covered with a vapor barrier. Fibrous ductwork may be used if constructed and installed in accordance with SMACNA Construction Standard on Fibrous Glass Ducts. Ductwork must comply with National Fire Protection Association as tested by U/L Standard 181 for Class I Air Ducts.
  • Page 25: Electric Heater

    Air Handlers 4.6 Electric Heater The air handlers listed in this manual do not have factory installed electric heat. Electric heat is available as an accessory. Please refer to installation instructions provided with heater kit for the correct installation procedure. Refer to the “Electric heater kits installation”...
  • Page 26 Air Handlers 4.6.2 Electric Heater Kits Installation Ensure that all power supply is disconnected prior to installing the heater kit. A means of strain relief and conductor protection must be provided at the supply wire entrance into cabinet. Use copper conductors only. Installation must follow national electric code and other applicable codes.
  • Page 27: Electrical Installation

    Air Handlers 11) Connection of power cords and thermostat wires. 4.7 Electrical Installation 4.7.1 Requirement and Notice on Electrical Installation The electrical installation for the air conditioner should observe the following requirements: ①. The electrical installation must be conducted by professionals in compliance with local laws and regulations and the instructions in this manual.
  • Page 28: Electrical Parameters

    Fuse overcurrent Model Power supply circuit Capacity protection ampacity (A) GUD24AH2/E-D(U) GUD36AH2/E-D(U) 208/230V-1Ph-60Hz 3.15 GUD48AH2/E-D(U) GUD60AH2/E-D(U) 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. The units must be able to be...
  • Page 29 Air Handlers ③. Circuit breaker and power cord specifications listed in the above table are determined based on the maximum power input of the units. ④. Specifications of circuit breaker are based on a working condition where the working temperature is 40°C. If working condition changes, please adjust the specifications according to national standards.
  • Page 30 Air Handlers Unit: mm(inch) (3) How to connect the thermostat wires and power cords. Lead the thermostat wires and power cords through the insulation tube. Then fix the wires with wire clamps (as shown in the following figure.) ①. Before working, please check whether the indoor unit and thermostat are powered on.
  • Page 31 Air Handlers ⑥. Ground wire should be connected. Electrical wiring of indoor units (Only for air handler without electric heater) GUD24AH2/E-D(U), GUD36AH2/E-D(U) GUD48AH2/E-D(U), GUD60AH2/E-D(U) Electrical wiring of indoor units...
  • Page 32 Air Handlers GUD24AH2/E-D(U), GUD36AH2/E-D(U) GUD48AH2/E-D(U), GUD60AH2/E-D(U) (only for air handler with BLR 6000W/240V BLR)
  • Page 33 Air Handlers GUD36AH2/E-D(U),GUD48AH2/E-D(U), GUD60AH2/E-D(U) (only for air handler with BLR 9000W/240V or 12000W/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. R means 24V AC power supply.
  • Page 34 Air Handlers G means indoor unit fan signal for the indoor unit. W2/AUX means heater control signal. L means refrigerant leakage protection signal. DH means Initial signal. Y1 means thermostat and compressor output signals. H1/H2 means RS485 communication. 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

    Draw curtain or louver. Too much heat source in the Reduce heat source. room. Filter screen is blocked by Clean the filter. dirt. NOTE: If reasons are still unclear after checking above items, please contact Gree service center and show phenomena and models.
  • Page 37 Air Handlers Following circumstances are not malfunction. “Malfunction” Reason When unit is started Overload protection switch immediately after it is makes it run after 3 minutes just turned off. delay. Unit doesn’t run. When power is turned Standby operating for about 1 minute.
  • Page 38: Led Indicator

    Air Handlers LED indicator Color Function When detecting the refrigerant leakage protection, refrigerant sensor failure and Refrigerant Leakage refrigerant sensor communication failure, Orange Indicator the Refrigerant Leakage Indicator light displays the fault type. Otherwise it will always flash. Flash when receiving the communication Communication Indicator Yellow data, otherwise it will be steady on to...
  • Page 39: Maintenance And Care

    Air Handlers NOTE:When the indoor unit has indoor unit refrigerant leakage protection, refrigerant sensor error or refrigerant sensor communication error, the buzzer will ring for 2s and stop for 5s, and the fan of the indoor unit will be forced to open, and the Y signal will be disconnected to stop the outdoor unit.
  • Page 40: Unventilated Areas

    Air Handlers 7.5 Unventilated Areas If appliances with A2L REFRIGERANTS connected via an air duct system to one or more rooms are installed in a room with an area less than Amin, that room shall be without continuously operating open flames (for example operating appliance)
  • Page 41: Transportation, Marking And Storage For Units That Employ Flammable Refrigerants

    Air Handlers persons. The training of these procedures is carried out by national training organisations or manufacturers that are accredited to teach the relevant national competency standards that may be set in legislation. The achieved competence should be documented by a certificate. Examples for such working procedures are: breaking into the refrigerating circuit;...
  • Page 42: Disposal Of Equipment Using Flammable Refrigerants

    Air Handlers 10.4 Disposal of Equipment Using Flammable Refrigerants See national regulations. 10.5 Storage of Equipment/Appliances The storage of the appliance should be in accordance with the applicable regulations or instructions, whichever is more stringent. 10.6 Storage of Packed (Unsold) Equipment Storage package protection should be constructed in such a way that mechanical damage to the equipment inside the package will not cause a leak of the REFRIGERANT CHARGE.
  • Page 43: Presence Of Fire Extinguisher

    Air Handlers atmospheres. Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe. 11.6 Presence of Fire Extinguisher If any hot work is to be conducted on the refrigerating equipment or any associated parts, appropriate fire extinguishing equipment shall be available to hand.
  • Page 44: Checks To Electrical Devices

    Air Handlers The ventilation machinery and outlets are operating adequately and are not obstructed; If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant; Marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected;...
  • Page 45: Pipe Installation

    Air Handlers 11.11 Pipe Installation That pipe-work including piping material, pipe routing, and installation shall include protection from physical damage in operation and service, and be in compliance with national and local codes and standards, such as ASHRAE 15, ASHRAE 15.2, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, or CSA B52.
  • Page 46: Removal And Evacuation

    Air Handlers Electronic leak detectors may be used to detect refrigerant leaks but, in the case of FLAMMABLE REFRIGERANTS, the sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used.
  • Page 47: Charging Procedures

    Air Handlers – open the circuit. Compressed air or oxygen shall not be used for purging refrigerant systems. For appliances containing flammable refrigerants, refrigerants purging shall be achieved by breaking the vacuum in the system with oxygen-free nitrogen and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum (optional for A2L).
  • Page 48: Labelling

    Air Handlers in case analysis is required prior to re-use of recovered refrigerant. It is essential that electrical power is available before the task is commenced. Become familiar with the equipment and its operation) Isolate system electrically. Before attempting the procedure, ensure that: Mechanical handling equipment is available, if required, for handling refrigerant cylinders;...
  • Page 49 Air Handlers When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge is available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e.special cylinders for the recovery of refrigerant).

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