Gree GMV-ND71PHS/B-T User Manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
Multi Variable Air Conditioners
Ducted Type Indoor Unit
Models:
GMV-ND22PHS/B-T GMV-ND25PHS/B-T GMV-ND28PHS/B-T GMV-ND32PHS/B-T
GMV-ND36PHS/B-T GMV-ND40PHS/B-T GMV-ND45PHS/B-T GMV-ND50PHS/B-T
GMV-ND56PHS/B-T GMV-ND63PHS/B-T GMV-ND71PHS/B-T GMV-ND80PHS/B-T
GMV-ND90PHS/B-T GMV-ND100PHS/B-T GMV-ND112PHS/B-T GMV-ND125PHS/B-T
GMV-ND140PHS/B-T GMV-ND160PHS/B-T GMV-ND180PHS/B-T

Gree GMV-ND71PHS/B-T Specifications

General

Brand	Gree
Model	GMV-ND71PHS/B-T
Category	Air Conditioner
Language	English

Summary

To Users

User Guidelines and Precautions

Details user responsibilities, safe operation, and product care instructions for optimal performance and longevity.

Exception Clauses

Manufacturer Liability Exclusions

Outlines reasons, such as improper use or natural disasters, for which the manufacturer is not liable for damages.

Safety Notices

General Safety Warnings and Prohibitions

Covers warnings about severe/minor damage, prohibited operations, and mandatory observations for safe use.

Installation Environment and Compatibility

Specifies installation location restrictions and unit compatibility with standards and other systems.

Electrical Safety and Grounding

Details power supply, grounding, and accessory requirements for safe electrical operation.

Refrigerant Handling Safety

Addresses refrigerant hazards, ventilation needs, and safe handling practices during installation and operation.

Product Introduction

Key Components Identification

Illustrates and names the main components of the ducted indoor unit for user reference.

Rated Working Conditions

Provides specifications for dry bulb and wet bulb temperatures for rated cooling and heating conditions.

Preparations for Installation

Standard Fittings List

Lists and describes the supplied fittings required for the installation of the indoor unit.

Indoor Unit Location Requirements

Specifies ideal locations for installation, considering structural support, air circulation, and clearance.

Requirements for Communication Line

Communication Line Selection for Units

Details the types of communication lines and connection methods for indoor units and wired controllers.

Wiring Requirements

Power Cord and Air Switch Specifications

Specifies power cord size, air switch capacity, and wire sectional areas for safe electrical connections.

Installation Instructions

Indoor Unit Outline Dimensions

Presents dimensional drawings and a table of specific measurements for various indoor unit models.

Indoor Unit Suspension and Mounting

Drilling Holes and Installing Bolts

Guides on drilling holes, inserting expansion bolts, and preparing for the unit's suspension.

Temporary Unit Mounting

Describes how to assemble suspension bolts and hanger brackets for temporarily fixing the indoor unit.

Refrigerant Pipe Connection

Flaring Port and Nut Tightening

Details the process of connecting refrigerant pipes, including aiming the port and tightening nuts with a torque wrench.

Pipe Bending and Insulation

Provides instructions on bending pipes correctly and insulating connection pipes and joints with sponge and tape.

Drainage Pipe Installation

Drain Pipe Installation Notices

Lists important considerations for drain pipe installation, including connection types, gradients, and insulation.

Drain Hose and Pipe Clamp Installation

Guides on inserting the drain hose, securing it with tapes, and tightening pipe clamps for proper drainage.

Drainage System Connections and Traps

Sealing, Collecting Pipes, and Trap Installation

Covers sealing pipe clamps, connecting multiple drain pipes, and installing traps for efficient water drainage.

Drainage Pipe Connection Methods

Illustrates different methods for connecting horizontal and vertical drainage pipes, including joints and elbows.

Drainage System Installation Height and Testing

Raising Pipe Height and Drain Pipe Slope

Specifies installation height requirements for raising pipes and the necessary downward slope for drain pipes to prevent sagging.

Drainage System Testing Procedure

Details the steps for testing the drainage system after electrical work, including water injection and checking for leaks.

Installation of Air Duct

Air Duct Insulation and Fixing

Emphasizes insulating air ducts, securing them with frames, and ensuring well-sealed junctions to prevent air leakage.

Air Outlet and Air-return Opening Design

Provides guidance on the shape, size, and placement of air outlets and air-return openings for optimal airflow.

Air Duct Installation Details

Air Outlet and Return Opening Dimensions

Presents a table with dimensions for air outlet and air-return openings for various unit models.

Installation of Air-out Duct

Describes the installation process for the air-out duct, including hanger rods and canvas ducts.

Return Air Duct Installation

Explains how to install the return air duct, including default locations and connections to the unit.

Fresh Air Pipe and Wired Controller Installation

Fresh Air Pipe Connection and Sealing

Details the process of connecting fresh air pipes, including cutting baffles, plugging gaps, and sealing.

Wired Controller Installation Guide

Refers to a separate manual for wired controller installation details and notes pre-operation testing.

Wiring Work

Wire and Terminal Connection Procedures

Outlines the steps for connecting wires to terminals, including stripping insulation and using appropriate tools for secure connections.

Power Cord and Communication Wire Connections

Power Cord Connection Guidelines

Provides warnings and instructions for connecting power cords, including circuit breakers and maintaining energized status.

Indoor/Outdoor Unit Communication Wiring

Explains how to connect communication cables between indoor and outdoor units via the wiring board.

Wired Controller Communication Setup

Communication Cable Fixing and Terminal Resistor

Details securing communication cables and installing terminal resistors for reliable communication bus performance.

Wired Controller Communication Wiring

Guides on connecting the communication wire to the indoor unit's wiring board for wired controller operation.

Wired Controller and Remote Control Network

Wired Controller and Receiving Light Board Installation

Shows installation diagrams for wired controllers and remote receiving light boards and their interaction.

Wired Controller Network Configuration

Explains how wired controllers connect to indoor units, including master/slave settings and maximum unit control.

Setting of External Static Pressure

External Static Pressure Adjustment

Provides tables and instructions for setting the external static pressure notch for different models via wired controller or software.

Routine Maintenance

General Maintenance Warnings

Lists critical safety warnings for maintenance, such as turning off power and avoiding hot water for cleaning.

Maintenance Procedures

Filter Cleaning Instructions

Details how to remove, clean, and dry filters, recommending regular cleaning based on environmental dust levels.

Seasonal Maintenance Checks

Outlines checks to perform before seasonal use, including air inlet/outlet, grounding, wiring, and error codes.

Post-Seasonal Use Maintenance

Advises setting the unit to fan mode to dry internal parts and cutting off power for long-term storage.

Table of Error Codes for Indoor Unit

Indoor Unit Error Code Reference

A comprehensive table listing error codes, their descriptions, and potential causes for indoor unit malfunctions.

Troubleshooting

Common Unit Malfunctions and Solutions

Provides a guide to common phenomena like unit not starting or poor cooling/heating, with suggested troubleshooting steps.