Gree GUHN18NK3HO User Manual

Owner's Manual
Air Conditioners
Indoor Unit Outdoor Unit
GKH18K3HI GUHN18NK3HO
GKH24K3HI GUHN24NK3HO
GKH30K3HI GUHN30NK3HO
GKH36K3HI GUHN36NM3HO
GKH42K3HI GUHN42NM3HO
GKH48K3HI GUHN48NM3HO
GKH60K3HI GUHN60NM3HO
 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 send 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.
Cassette Type
Air Conditioner Unit

Gree GUHN18NK3HO Specifications

General

Type	Split System
Voltage	220-240V
Refrigerant	R410A
Compressor Type	Rotary
Indoor Unit Weight	12 kg
Cooling Capacity	18000 BTU
Heating Capacity	18000 BTU
Operating Temperature (Cooling)	18°C to 43°C
Power Supply	Single Phase

Summary

Safety Precautions

Unit and Main Parts Overview

Installation Preparations

Standard Accessory Parts

Lists and describes all standard accessory parts included with the air conditioner unit for installation.

Installation Location Selection

Guidance on choosing the optimal location for both indoor and outdoor units based on operational and environmental factors.

Connection Pipe Specifications

Details on the required specifications, lengths, and types for connecting pipes between indoor and outdoor units.

Electrical Requirements

Specifies the electrical wiring sizes, fuse capacities, and power supply requirements for the unit.

Unit Installation Procedures

Indoor Unit Installation

Step-by-step instructions for mounting and installing the indoor cassette unit, including dimensions, leveling, and suspension.

Outdoor Unit Installation

Guidelines for correctly installing the outdoor unit, considering stability, wind exposure, and condensate drainage.

Connection Pipe Installation

Detailed procedures for processing, bending, connecting, and insulating the refrigerant pipes.

Vacuum and Leakage Checks

Procedures for evacuating the system and performing gas leakage tests to ensure a safe and efficient installation.

Drain Hose Installation

Instructions for properly installing the drain piping, including gradient requirements and testing.

Panel Installation

Steps and precautions for installing the front panel of the indoor unit, ensuring proper fit and preventing air leaks.

Electrical Wiring

Guidance on connecting power cords and communication wires between indoor and outdoor units, including safety precautions.

Controller Installation

Test Running Procedures

Trial Operation and Testing

Instructions for performing initial trial operations, understanding error codes, and checking indicator lamps.

Operating Temperature Ranges

Details the acceptable indoor and outdoor ambient temperature ranges for cooling and heating operations.

Troubleshooting and Maintenance

Troubleshooting Common Issues

Identifies common failures and their possible causes, providing initial checks before seeking professional service.

Routine Maintenance Guide

Procedures for regular maintenance, focusing on cleaning air filters and general unit care by qualified personnel.