Gree Split Air Conditioner Owner's Manual

Introduction

Thank you for choosing Gree. 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 your local agent or visit www.gree.com or send an email to global@cn.gree.com for the electronic version.

This manual covers the following models: GWHD(14)NK600, GWHD(18)NK600, GWHD(21)NK600, GWHD(24)NK600, GWHD(28)NK600, GWHD(36)NK600, GWHD(42)NK600.

In line with Gree's policy of continual product improvement, aesthetic and dimensional characteristics, technical data, and accessories may be changed without notice.

General Information & Safety

This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use by a person responsible for their safety. Children should be supervised to ensure they do not play with the appliance.

For installation, moving, or maintenance, please contact a dealer or local service center. Improper installation, moving, or maintenance may cause serious damage or personal injury or death. Refrigerant leaks or discharge during installation, maintenance, or disassembly must be handled by certified professionals in compliance with local laws and regulations.

Disposal: This product should not be disposed of with other household wastes throughout the EU. To prevent possible harm to the environment or human health from uncontrolled waste disposal, recycle it responsibly. Use return and collection systems or contact the retailer for environmental safe recycling. (Recycling symbol: ♻️)

Explanation of Symbols:

• DANGER: ⚠️ Indicates a hazardous situation that, if not avoided, will result in death or serious injury.
• WARNING: ⚠️ Indicates a hazardous situation that, if not avoided, could result in death or serious injury.
• CAUTION: ⚠️ Indicates a hazardous situation that, if not avoided, may result in minor or moderate injury.
• NOTICE: ℹ️ Indicates important but not hazard-related information, used to indicate risk of property damage.
• ! Indicates a hazard that would be assigned a signal word WARNING or CAUTION.

Exception Clauses: The manufacturer bears no responsibility for personal injury or property loss caused by:

• Improper use or misuse of the product.
• Alteration, change, maintenance, or use with other equipment without abiding by the manual.
• Defects caused by corrosive gas.
• Defects due to improper operation during transportation.
• Operation, repair, or maintenance without abiding by the manual or regulations.
• Problems caused by quality specifications or performance of third-party parts.
• Damage caused by natural calamities, bad environment, or force majeure.

Conformity and Range: Please read this owner's manual carefully before operating the unit and keep it for consultation. Use the air conditioner only as instructed. Common sense and caution are recommended for installation, operation, and maintenance.

The Refrigerant

The air conditioner uses a special refrigerant, R32, which is cleaned, non-polluting, and has no harm to the ozone layer. It has a lower greenhouse effect and good thermodynamic features leading to high energy efficiency. However, R32 is flammable and inodorous, and can lead to explosion under certain conditions, though its flammability is very low and it can only be ignited by fire.

WARNING:

• Do not use unauthorized means to accelerate defrosting or cleaning. Contact an authorized Service Centre for repairs.
• Repairs by unqualified personnel may be dangerous.
• Store the appliance in a room without continuously operating ignition sources (e.g., open flames, operating gas appliances, operating electric heaters).
• Do not pierce or burn the unit.
• Ensure the room area meets minimum requirements (refer to Table a in the "SAFETY OPERATION OF FLAMMABLE REFRIGERANT" section).
• For repairs, strictly follow manufacturer's instructions.
• Be aware that refrigerants may not contain an odour. Read the specialist's manual.

Operation and Maintenance Warnings

This appliance can be used by children aged 8 and above, and persons with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, provided they receive supervision or instruction on safe use and understand the hazards involved.

• Children shall not play with the appliance.
• Cleaning and user maintenance shall not be performed by children without supervision.
• Do not connect the air conditioner to a multi-purpose socket; this may cause a fire hazard.
• Disconnect power supply before cleaning; otherwise, electric shock may occur.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified persons to avoid a hazard.
• Do not wash the air conditioner with water to avoid electric shock.
• Do not spray water on the indoor unit; this may cause electric shock or malfunction.
• After removing the filter, do not touch the fins to avoid injury.
• Do not use fire or a hair dryer to dry the filter; this may cause deformation or fire hazard.
• Maintenance must be performed by qualified professionals; otherwise, personal injury or damage may occur.
• Do not repair the air conditioner yourself; this may cause electric shock or damage. Contact your dealer for repairs.
• Do not extend fingers or objects into the air inlet or outlet; this may cause personal injury or damage.
• Do not block the air outlet or air inlet; this may cause malfunction.
• Do not spill water on the remote controller; this may break the controller.

When the following phenomena occur, turn off the air conditioner, disconnect power immediately, and contact a dealer or qualified professional:

• Power cord is overheating or damaged.
• Abnormal sound during operation.
• Circuit breaker trips off frequently.
• Air conditioner gives off a burning smell.
• Indoor unit is leaking.

Additional Warnings:

• If the air conditioner operates under abnormal conditions, it may cause malfunction, electric shock, or fire hazard.
• When using the emergency operation switch, press it with an insulating object other than metal.
• Do not step on the top panel of the outdoor unit or place heavy objects on it; this may cause damage or personal injury.

Attachment & Electrical Connections

Installation must be performed by qualified professionals. Follow all electric safety regulations. Use a qualified power supply circuit and circuit breaker. An all-pole disconnection switch with a contact separation of at least 3mm in all poles should be connected in fixed wiring. Ensure the air switch has suitable capacity, magnet buckle, and heating buckle functions for circuit protection.

The air conditioner must be properly grounded. Incorrect grounding may cause electric shock. Do not use unqualified power cords. Ensure the power supply matches the unit's requirements. Unstable power supply or incorrect wiring may result in electric shock, fire hazard, or malfunction. Connect live, neutral, and grounding wires properly. Always cut off the power supply before any electrical work. Do not restore power before installation is complete. If the supply cord is damaged, it must be replaced by the manufacturer or a qualified person. Keep interconnection cables away from the copper tube as the refrigerant circuit temperature is high. Installation must comply with national wiring regulations and NEC/CEC by authorized personnel.

Grounding: The air conditioner is a first-class electric appliance and requires proper grounding with a specialized device by a professional. Ensure effective grounding to prevent electric shock. The yellow-green wire is for grounding only. Grounding resistance must comply with national electric safety regulations. The appliance must be positioned so the plug is accessible.

All wires of indoor and outdoor units must be connected by a professional. If the power connection wire is insufficient, contact the supplier; do not extend it yourself. For units with a plug, ensure the plug is reachable after installation. For units without a plug, install a circuit breaker. Relocation must be done by qualified personnel. Select a location out of reach for children and away from animals or plants; use a fence if unavoidable. The indoor unit should be installed close to the wall.

Electrical Connections Diagrams: Detailed wiring diagrams are provided for connecting multiple indoor units (A, B, C, D, E) to the outdoor unit and the power supply. These diagrams illustrate terminal connections (L, N, 1, 2, 3) and wire colors (blue, brown, black, yellow-green) for various model configurations.

Air Switch Capacity:

Handling: After unpacking, check that contents are intact. The outdoor unit must always be kept upright. Handling must be done by suitably equipped qualified technical personnel.

Installing the Outdoor Unit

Location: Secure the unit to a flat, solid floor using bolts. For wall or roof mounting, ensure the support is firmly secured against vibrations or wind. Do not install in pits or air vents.

Installing the Pipes: Use suitable connecting pipes and equipment for refrigerant R32. Maximum connection pipe lengths and heights are specified for different model configurations. Wrap all refrigerant pipes and joints. Tighten connections using two wrenches working in opposite directions. Installation must be performed in accordance with NEC/CEC by Authorized Personnel Only.

Drain Fitting and Hose (for heat pump models): Condensation in heating mode requires a drain fitting and hose. Install these to channel condensate water, avoiding severe cold areas where freezing may occur.

BLEEDING: To remove air and humidity from the refrigerant circuit using a vacuum pump:

1. Unscrew and remove caps from 2-way and 3-way valves.
2. Unscrew and remove the cap from the service valve.
3. Connect the vacuum pump hose to the service valve.
4. Operate the vacuum pump for 10-15 minutes until an absolute vacuum of 10 mm Hg is reached.
5. While the pump is running, close the low-pressure knob on the vacuum pump coupling and stop the pump.
6. Open the 2-way valve by 1/4 turn, then close it after 10 seconds. Check all joints for leaks using liquid soap or an electronic leak device.
7. Turn the body of the 2-way and 3-way valves. Disconnect the vacuum pump hose.
8. Replace and tighten all caps on the valves.

Twisting Moment for Valve Connections:

Diagram Description: Illustrates the connection of a vacuum pump to the service valve and the operation of 2-way and 3-way valves during the bleeding process.

Maintenance & Installation Dimension Diagram

Maintenance: Use suitable instruments for refrigerant R32. Do not use other refrigerants or mineral oils for cleaning.

Installation Dimension Diagram:

• Installation must be done by trained and qualified service personnel.
• Contact the service center before installation to avoid malfunctions due to unprofessional installation.
• Units must be handled by trained and qualified persons.
• Ensure recommended space is left around the appliance.

Recommended Clearances:

• 30cm or above (Space to the cover)
• 200cm or above (Air outlet side)
• 50cm or more (Space to the cover)
• 30cm or above (Air inlet side)
• 50cm or above (Space to the wall)

Fixing the Support of Outdoor Unit: Select installation location based on house structure. Fix the support with expansion screws. Take sufficient protective measures. Ensure the support can withstand at least four times the unit's weight. The outdoor unit should be installed at least 3cm above the floor for the drain joint. For models with heating tubes, the height should be no less than 20cm. The number of expansion screws required depends on the cooling capacity (6 for 2300W-5000W, 8 for 6000W-8000W, 10 for 10000W-16000W). Do not install the drainage joint in severe cold areas to prevent freezing.

Check After Installation

Ensure the following items are checked after installation:

Safety Operation of Flammable Refrigerant

Qualification Requirement for Installation and Maintenance Man: Technicians must hold valid certifications recognized by authoritative organizations for refrigeration systems. Other technicians must be supervised by a qualified person. Repairs must follow manufacturer's suggested methods.

Installation Notes:

• Do not use the air conditioner in rooms with open flames, working coal gas, or operating heaters.
• Do not drill holes or burn connection pipes.
• Install the air conditioner in a room larger than the minimum room area specified on the nameplate or in Table a.
• Leak test is mandatory after installation.

Table a - Minimum Room Area (m²): This table provides minimum room areas based on refrigerant charge amount (kg) and floor location (floor, window mounted, wall mounted, ceiling mounted). For example, for a charge of 1.5 kg and wall mounting, the minimum area is 2.4 m².

Maintenance Notes:

• Ensure the maintenance area meets the nameplate requirements and is well-ventilated.
• Continuous ventilation should be maintained during operation.
• No naked flames are permitted in the maintenance area; a "no smoking" warning board should be displayed.
• Check appliance markings and replace any vague or damaged warning marks.

Welding: If cutting or welding refrigerant system pipes:

1. Shut down the unit and cut power supply.
2. Eliminate the refrigerant.
3. Vacuum the system.
4. Clean with N2 gas.
5. Perform cutting or welding.
6. Carry back to the service spot for welding.

Recycle refrigerant into a specialized storage tank. Ensure no naked flame near the vacuum pump outlet and that the area is well-ventilated.

Filling the Refrigerant: Use R32-specific filling appliances. Prevent contamination. Keep the refrigerant tank upright during filling. Apply a label after filling. Do not overfill. Perform leak detection before test running and again after removal.

Safety Instructions for Transportation and Storage: Use a flammable gas detector before unloading. No fire source or smoking. Comply with local rules and laws.

Specialist's Manual

Checks for Flammable Refrigerants: Ensure correct charge size for room size, adequate ventilation, unobstructed machinery, check secondary circuits for refrigerant, and ensure markings are visible and legible. Refrigeration pipes/components should not be exposed to corrosive substances unless made of resistant materials.

Repair and Maintenance of Electrical Components: Include initial safety checks and component inspection. If a fault compromises safety, do not connect electrical supply until corrected. If temporary operation is necessary, an adequate temporary solution must be used and reported to the owner.

Initial Safety Checks: Ensure capacitors are discharged safely to avoid sparking. Ensure no live electrical components or wiring are exposed during charging, recovering, or purging. Verify continuity of earth bonding.

Checking for Presence of Refrigerant: Use an appropriate refrigerant detector to identify potentially toxic or flammable atmospheres. Ensure leak detection equipment is suitable for refrigerants and is non-sparking, sealed, or intrinsically safe.

Presence of Fire Extinguisher: Have appropriate fire extinguishing equipment (dry powder or CO2) available for any hot work.

Ventilated Area: Ensure the area is open or adequately ventilated before breaking into the system or conducting hot work. Ventilation must continue during work to disperse refrigerant.

Leak Detection Methods: Leak detection fluids are suitable, but avoid detergents containing chlorine, as chlorine can react with refrigerant and corrode copper pipes.

Checks to Refrigeration Equipment: Replace electrical components with parts of the correct specification. Follow manufacturer's maintenance and service guidelines.

Checks to Electrical Devices: Ensure capacitors are discharged safely. Ensure no live electrical components or wiring are exposed during charging, recovering, or purging.

Repairs to Sealed Components: Disconnect all electrical supplies before working on sealed components. If electrical supply is necessary during servicing, use permanently operating leak detection. Pay attention to casing integrity, cable damage, connections, terminals, seals, and glands. Ensure apparatus is mounted securely. Check seals/sealing materials have not degraded. Use manufacturer-specified replacement parts.

Repair to Intrinsically Safe Components: Do not apply permanent inductive or capacitance loads that exceed permissible voltage/current. Intrinsically safe components can be worked on live in a flammable atmosphere. Use correctly rated test apparatus. Replace components only with manufacturer-specified parts.

Cabling: Check cabling for wear, corrosion, pressure, vibration, sharp edges, or other adverse environmental effects, considering aging and vibration from compressors/fans.

Detection of Flammable Refrigerants: Never use potential sources of ignition (e.g., halide torch) for leak detection.

Decommissioning: Ensure technician is familiar with equipment. Recover refrigerants safely. Take oil/refrigerant samples if analysis is required. Electrical power must be available. Procedures include: familiarization, electrical isolation, ensuring mechanical handling equipment, PPE, supervision, recovery equipment standards, pump down, vacuuming, cylinder placement on scales, operating recovery machine, not overfilling cylinders (max 80% liquid charge), not exceeding cylinder working pressure, prompt removal of cylinders, closing isolation valves, and handling recovered refrigerant (cleaning/checking before reuse). Label equipment as decommissioned and emptied of refrigerant. For flammable refrigerants, ensure labels state this.

Recovery: Remove refrigerants safely for servicing or decommissioning. Use appropriate recovery cylinders, ensuring correct number and designation. Cylinders must have pressure-relief valves. Evacuate and cool empty cylinders. Recovery equipment must be in good working order with instructions and suitable for all refrigerants. Use calibrated weighing scales and leak-free hoses. Check recovery machine for satisfactory working order and maintenance. Return recovered refrigerant to supplier in correct cylinder and arrange waste transfer. Do not mix refrigerants. Evacuate compressors/oils to acceptable levels before returning them. Use electric heating for compressor bodies if needed. Drain oil safely.

Company Information

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: global@cn.gree.com

Web: www.gree.com

Document Number: 600005063611