Gree GKH24S3GI Owner's Manual
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Gree GKH24S3GI Owner's Manual

Gree GKH24S3GI Owner's Manual

Dc inverter cassette type unit
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 Thank you for choosing Air Conditioners, 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.gree.com or sent email to global@gree.com.cn or electronic version.
 GREE reserves the right to interpret this manual which will be subject to any change due to product
improvement without further notice.
 GREE Electric Appliances, Inc. of Zhuhai reserves the final right to interpret this manual.
DC Inverter U-match Series
Cassette Type Unit
Owner's Manual
Air Conditioners
Indoor unit
Outdoor unit
GKH24S3GI
GUHD24NS3GO
GKH36S3GI
GUHD36NS3GO
GKH42S3GI
GUHD42NS3GO
GKH48S3GI
GUHD48NS3GO

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Summary of Contents for Gree GKH24S3GI

  • Page 1 Owner’s Manual, please contact the local agent or visit www.gree.com or sent email to global@gree.com.cn or electronic version.  GREE reserves the right to interpret this manual which will be subject to any change due to product improvement without further notice.
  • Page 2 Preface For correct installation and operation, please read all instructions carefully. Before reading the instructions, please be aware of the following items: (1) For the safe operation of this unit, please read and follow the instructions carefully. (2) During operation, total capacity of indoor units should not exceed the total capacity of outdoor units.

  • Page 3: Table Of Contents

    Contents 1 Safety Precautions ................... 1 2 Outline of the Unit and Main Parts ............3 3 Preparative for Installation ............... 4 3.1 Standard Accessory Parts ............... 4 3.2 Selection of the Installation Location ............5 3.3 Connection Pipe Requirement ..............7 3.4 Electrical Requirement ................

  • Page 4: Safety Precautions

    DC Inverter U-match Series Cassette Type Unit 1 Safety Precautions This mark indicates procedures which, if improperly performed, might lead to WARNING! the death or serious injury of the user. This mark indicates procedures which, if improperly performed, might CAUTION! possibly result in personal harm to the user, or damage to property.
  • Page 5 DC Inverter U-match Series Cassette Type Unit (12). When installing or relocating the system, be sure to keep the refrigerant circuit free from substances other than the specified refrigerant (R410A), such as air. (Any presence of air or other foreign substance in the refrigerant circuit causes an abnormal pressure rise or rupture, resulting in injury.) (13).

  • Page 6: Outline Of The Unit And Main Parts

    DC Inverter U-match Series Cassette Type Unit 2 Outline of the Unit and Main Parts Fig. 2.1...

  • Page 7: Preparative For Installation

    DC Inverter U-match Series Cassette Type Unit 3 Preparative for Installation 3.1 Standard Accessory Parts The standard accessory parts listed below are furnished and should be used as required. Table 3.1 Indoor Unit Accessories Name Appearance Q'ty Usage To connect with the hard Drain Hose PVC drain pipe To fix the hook on the...

  • Page 8: Selection Of The Installation Location

    DC Inverter U-match Series Cassette Type Unit Sponge To insulate the drain pipe To connect gas pipe To connect liquid pipe Enswathement Table 3.2 Outdoor Unit Accessories Name Appearance Q'ty Usage To plug the unused drain Drain Plug 2 or 3 hole.
  • Page 9 Table 3.3 Models H(mm) ≥1500mm GKH24S3GI ≥1500mm (59inch) (59inch) GKH36S3GI GKH42S3GI GKH48S3GI...

  • Page 10: Connection Pipe Requirement

    DC Inverter U-match Series Cassette Type Unit 3.2.2 Outdoor Unit WARNING! ①. Install the unit where it will not be tilted by more than 5° . ②. During installation, if the outdoor unit has to be exposed to strong wind, it must be fixed securely. If possible, do not install the unit where it will be exposed to direct sunlight.

  • Page 11: Electrical Requirement

    Pipe(Inch) Max. Pipe Difference between Diameter × wall Length (m) Indoor Unit and Model thickness) (mm) Liquid Outdoor Unit (m) GKH24S3GI GUHD24NS3GO GKH36S3GI GUHD36NS3GO Φ20X1.2 GKH42S3GI GUHD42NS3GO GKH48S3GI GUHD48NS3GO The connection pipe should be insulated with proper water-proof insulating material.

  • Page 12: Installation Of The Unit

    DC Inverter U-match Series Cassette Type Unit Notes: ①. The fuse is located on the main board. ②. Install the disconnect device with a contact gap of at least 3 mm in all poles nearby the units (Both indoor unit and outdoor unit).The appliance must be positioned so that the plug is accessible. ③.
  • Page 13 DC Inverter U-match Series Cassette Type Unit Table 4.1 Item Model GKH24S3GI GKH36S3GI GKH42S3GI GKH48S3GI 4.1.2 Installing the Main Body Unit Nut(field supplied) Gas(attachment) Insert Gasket anchor board(attachment) Hoisting stand Tighten(double nuts) [Fix the gasket firmly] [Fix the hoisting stand firmly]...

  • Page 14: Installation Of The Outdoor Unit

    DC Inverter U-match Series Cassette Type Unit 4.1.3 Installing the Suspension Bolts (1). Using the installation template, drill holes for bolts (four holes). (Fig. 4.3) (2). Install the bolts to the ceiling at a place strong enough to hang the unit. Mark the bolt positions from the installation template.
  • Page 15 DC Inverter U-match Series Cassette Type Unit 4.2.1 Outdoor unit dimension Fig. 4.7 Table 4.2 Unit: mm Item Model GUHD24NS3GO 1005 GUHD36NS3GO 1105 1105 GUHD42NS3GO GUHD48NS3GO 1085 1365 4.2.2 Condensate Drainage of the Outdoor Unit (Only for the heat pump unit) (Fig. 4.8) (1).

  • Page 16: Installation Of The Connection Pipe

    DC Inverter U-match Series Cassette Type Unit 4.3 Installation of the Connection Pipe 4.3.1 Flare Processing (1). Cut the connection pipe with the pipe cutter and remove the burrs. (2). Hold the pipe downward to prevent cuttings from entering the pipe. (3).
  • Page 17 DC Inverter U-match Series Cassette Type Unit the heat insulating pipe back on the pipe, and secure it with tape. Pipe Heat insulating pipe Cutter Cutt line Fig. 4.11 CAUTION! ①. To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of 150 mm or over.
  • Page 18 DC Inverter U-match Series Cassette Type Unit Sponge Threaded fastener(×4) Heat insulation sheath (for the liquid tube) Heat insulation sheath (for the gas tube) Gas inlet pipe Liquid pipe Fig. 4.12 Table 4.3 Flare nut tightening torque Pipe Diameter Tightening Torque 6mm (1/4inch) 15~30N·...
  • Page 19 DC Inverter U-match Series Cassette Type Unit Gas pipe Liquid pipe Pipe coupling 3-way valve 2-way valve Fig. 4.13 4.3.5 Checking the Pipe Connections for Gas Leaking For both indoor and outdoor unit side, check the joints for gas leaking by the use of a gas leakage detector without fail when the pipes are connected.
  • Page 20 DC Inverter U-match Series Cassette Type Unit Fig. 4.15 (2). If the outdoor unit is installed higher than the indoor unit (See Fig. 4.16) 1). Taping should be done from lower to the upper part. 2). All pipes are bound and taped together and also should be trapped to prevent water from returning to the room.

  • Page 21: Vacuum And Gas Leakage Inspection

    DC Inverter U-match Series Cassette Type Unit 4.4 Vacuum and Gas Leakage Inspection CAUTION! Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is no extra refrigerant in the outdoor unit for air purging! 4.4.1 Vacuum (1).
  • Page 22 DC Inverter U-match Series Cassette Type Unit Pressure gauge (Low-pressure) gauge manifold Pressure gauge (Hi-pressure) Switch (Low-pressure) Switch (Hi-pressure) Connection pipe Connection pipe (to indoor unit) Liquid valve Gas valve Service pipe Hose Service port Hose with the valve pin Vacuum pump Fig.

  • Page 23: Installation Of The Drain Hose

    DC Inverter U-match Series Cassette Type Unit 4.5 Installation of the Drain Hose 4.5.1 Installation of Drain Piping (1). Keep piping as short as possible and slope it downwards at a gradient of at least 1/100 so that air may not remain trapped inside the pipe. (2).
  • Page 24 DC Inverter U-match Series Cassette Type Unit unit.(take the cassette type unit for example) T-joint converging drain pipes T-joint converging drain pipes Fig. 4.20 (4). When the drain hose cannot keep a sufficient gradient, it is necessary to fit a riser pipe (field supplied) to it.
  • Page 25 DC Inverter U-match Series Cassette Type Unit NO.2: Attach the drain elbow as shown in Fig. 4.25. NO.3: Attach the horizontal pipe as shown in Fig. 4.26. 3-way connection of Connection of drain elbow Connection of horizontal pipe drainage pipe joint Fig.
  • Page 26 DC Inverter U-match Series Cassette Type Unit 1~1.5m(3-2/7~5feet) √ (Correct) 1/100 or more gradient × (wrong ) Fig. 4.28 (5). The incline of attached drain hose should be 75 mm or less so that the drain outlet does not have to withstand additional force. Drain hose(attachment) Fig.

  • Page 27: The Panel Installation

    DC Inverter U-match Series Cassette Type Unit 4.6 The Panel Installation 4.6.1 Precautions See the Figure below for the relationship of the front panel and the connecting (1). pipe. Fig. 4.31 Improper screwing of the screws may cause the troubles shown in Fig. 4.32. (2).
  • Page 28 DC Inverter U-match Series Cassette Type Unit Adjustment of the indoor unit body from the holes in the corner of the panel is possible if the indoor unit can always be kept horizontal and the drain pipe etc. will be unaffected. No gap is allowed Fig.

  • Page 29: Electrical Wiring

    DC Inverter U-match Series Cassette Type Unit ① Hook Latch ② Piping position ② Swing flap motor ③ ④ Indoor unit Ceiling Indoor unit 5~8mm(1/4~3/8inch) ⑤ Panel Air outlet Fig. 4.35 4.7 Electrical Wiring 4.7.1 Wiring Precautions WARNING! ①. Before obtaining access to terminals, all supply circuits must be disconnected. ②.
  • Page 30 DC Inverter U-match Series Cassette Type Unit CAUTION! ①. The power source capacity must be the sum of the air conditioner current and the current of other electrical appliances. When the current contracted capacity is insufficient, change the contracted capacity. ②.
  • Page 31 DC Inverter U-match Series Cassette Type Unit Screw with Screw with special washer special washer Round Insulation tube terminal Round terminal Terminal board Insulation tube Wire Cord clamp Wire Fig. 4.37 Fig. 4.38 (3). How to fix connection cord and power cord by cord clamp After passing the connection cord and power cord through the insulation tube, fasten it with the cord clamp.
  • Page 32 DC Inverter U-match Series Cassette Type Unit (4). Electric wiring between the indoor and outdoor units Single-phase units (24~48k) Fig. 4.39 GUHD24NS3GO+GKH24S3GI ①. Power cord 3×2.5mm² (H07RN-F) ②. Power cord 3×1.0mm² (H05RN-F) ③. Communication Cords 2×0.75mm² (H05RN-F) GUHD36NS3GO+GKH36S3GI GUHD42NS3GO+GKH42S3GI ①. Power cord 3×4.0mm² (H07RN-F) ②.
  • Page 33 DC Inverter U-match Series Cassette Type Unit (5). Electric wiring of indoor unit side Remove the electric box cover from the electric box sub-assy and then connect the wire. For the units: 24~48k Fig. 4.40...
  • Page 34 DC Inverter U-match Series Cassette Type Unit CAUTION! ①. The power cord and the wire of the fresh air valve are high-voltage, while the communication cord and connection wire of the wired controller are low-voltage. They should run separately against electromagnetic interference.

  • Page 35: Installation Of Controllers

    DC Inverter U-match Series Cassette Type Unit 1). Separate Power Supply for indoor unit and outdoor unit: Fig. 4.41 2). The Power Supply for indoor unit from outdoor unit: Fig. 4.42 5 Installation of Controllers Refer to the Installation Manual of the controller for more details.

  • Page 36: Test Running

    DC Inverter U-match Series Cassette Type Unit 6 Test Running 6.1 Trial Operation and Testing (1). The meaning of error codes as shown below: Table 6.1 Number Error code Error Remarks Compressor high pressure protection Indoor anti-freeze protection Compressor low pressure protection, refrigerant lack protection and refrigerant colleting mode Compressor high discharge temperature protection Communication error...
  • Page 37 DC Inverter U-match Series Cassette Type Unit Drive reset protection Over-current protection Communication error between main control and drive Drive module sensor error Drive module over temperature protection Zero passage protection AC current protection Drive current error Sensor connecting protection Temperature drift protection Bus low voltage protection Bus high voltage protection...

  • Page 38: Working Temperature Range

    DC Inverter U-match Series Cassette Type Unit  Timer Indicating Lamp: It goes on when the timer is set and goes off when it is not. Its display is in yellow.  “88” Display: When there is no error, and it receives valid remote control information. It will display the temp setup for 5s, then display the temp of indoor.

  • Page 39: Troubleshooting And Maintenance

    Note: solve the problems but the air-conditioning unit still does not function well, please stop the operation of the unit immediately and contact the local service agency designated by Gree. Only ask professional serviceman to check and repair the unit.

  • Page 40: Routine Maintenance

    DC Inverter U-match Series Cassette Type Unit 7.2 Routine Maintenance Only a qualified service person is allowed to perform maintenance. Before accessing to terminal devices, all power supply circuits must be disconnected. Do not use water or air of 50° C or higher for cleaning air filters and outside panels. Notes: ①.
  • Page 41 DC Inverter U-match Series Cassette Type Unit 2) How to open the panel grille of the 18k/48k cassette type unit ①. Remove the screws by a Remove the screw screwdriver as shown in the picture. ②. Push those two fasteners and Push the fastener open the panel grille.
  • Page 42 DC Inverter U-match Series Cassette Type Unit Filter screen 4. Disassemble the air purifier Remove the air purifier after Filtering element removing the fixed screws on it. Support Bolt 5. Clean the filer screen Clean the filer screen by a vacuum cleaner or wash it by flashing water.
  • Page 43 GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China, 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 E-mail: gree@gree.com.cn www.gree.com...

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