Gree GMV-450WM/E-X - User Manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
GMV DC Inverter VRF
Models:
GMV-224WM/E-X
GMV-280WM/E1-X
GMV-280WM/E-X
……
GMV-2460WM/E-X

Summary

1 SAFETY NOTICES (PLEASE BE SURE TO ABIDE)

Installation Safety and Personnel

Electrical and Earthing Safety

Operational Safety Precautions

3.2 Outdoor Unit Spacing Requirements (Single;Dual Modules)

Clearances for Single and Dual Module Units

3.2 Outdoor Unit Spacing Requirements (Multi-Modules)

Clearances for Three and Four Module Units

3.3 Piping Work Requirements

R410 A Refrigerant Piping Specs

4 Installation Instruction

4.1 Outdoor Unit Dimensions and Mounting Hole

4.1 Outdoor Unit Dimensions (GMV-335 to GMV-450)

4.1 Outdoor Unit Dimensions (GMV-450 to GMV-615)

Unit Dimensions and Mounting Holes

4.2 Connection Pipe

4.2.1 Piping Connection Schematic

4.2 Piping Sequence Diagrams

Piping Sequence for Specific Models

4.2 Pipe Length and Height Limits

Allowable Pipe Lengths and Height Differences

Specifies maximum pipe lengths and height differences between units.

4.2 Piping Fitting Specifications

Pipe Fitting Allowable Values

Details allowable values for pipe lengths, height differences, and main pipe specs.

4.2 Outdoor Module Pipe Specifications

Pipe Size Between Outdoor Modules

Specifies pipe sizes for connections between multiple outdoor modules.

4.2 ODU to First IDU Branch Piping

Pipe Size from ODU to First IDU Branch

Lists pipe sizes for connections from outdoor units to the first indoor unit branch.

4.2 Indoor Manifold Selection

Manifold Selection Based on Capacity

4.2 Manifold Pipe Sizing

Pipe Size Between Module Manifolds

Specifies pipe sizes between manifolds based on total upstream module capacity.

4.2 Indoor Unit to Manifold Piping

Pipe Size for Indoor Unit Connections

Details pipe sizes for connections from indoor units to manifolds.

4.3 Connection Pipe Installation Precautions

Piping Connection Principles

Outlines principles for piping connection: shortness, minimal bends, large radius.

4.3 Manifold Installation

Manifold Types and Connections

4.3 Manifold Installation Details

Manifold Fixing and Insulation

4.3 Pipeline Installation and Labeling

Pipeline Installation and Labeling

4.3 Pipeline Installation Requirements

Straight Pipe Lengths and Fixing Points

4.3 Pipeline Insulation and Suspension

Header Suspension and Pipe Insulation

4.4 Air Purging and Refrigerant Charge

4.4.1 Air Purging Procedure

Describes the procedure for air purging using a vacuum pump.

4.4.2 Additional Refrigerant Charging

Explains how to charge additional refrigerant based on pipe length and capacity.

4.4 Refrigerant Charging Calculations

Calculating Refrigerant Amounts

Details calculations for pipeline and module refrigerant charging amounts.

4.4 Refrigerant Leakage Precautions

Refrigerant Leakage Safety Measures

Outlines safety requirements for preventing and managing refrigerant leakage.

4.5 Electric Wiring

4.5.1 Wiring Precautions

General precautions for electrical wiring, conforming to codes.

4.5.2 Power Cord Wiring

4.5 Circuit Breaker and Wire Size

Circuit Breaker and Wire Size Specifications

Provides specs for circuit breaker capacity and wire sizes for units.

4.5 Power Cord Connection

4.5.3 Connecting the Power Cord

Details safe practices for connecting the power cord, including grounding.

4.6 System Communication Overview

4.7 System Communication Connection

4.7.1 IDU to ODU Connection

Explains how to connect indoor and outdoor units via D1/D2 terminals.

4.7 Modular Unit Communication

Modular Outdoor and Indoor Unit Connections

Details connection methods for modular units, with important notes.

4.7 IDU to Wired Controller Communication

IDU to Wired Controller Connection Types

Shows four types of connections between indoor units and wired controllers.

4.7 Wired Controller Setup

Setting Wired Controllers (Master;Slave)

4.7 Central Controlling Unit Communication

Centralized Controller Setup

Details port connections for centralized control systems involving multiple VRF units.

4.8 External Electrical Wiring Diagram

4.8.1 Single Unit Wiring Diagram

Shows the electrical wiring diagram for a single outdoor and multiple indoor units.

4.8 Modular Unit Wiring Diagram

4.8.2 Modular Connection Wiring Diagram

Illustrates the electrical wiring for modular outdoor and indoor unit combinations.

5 Installation and Trial Run Checks

5.1 Post-Installation Checklist

A checklist of items to verify after completing the installation.

5.2 Trial Run Preparation

5.2.1 Preparation Steps Before Trial Run

Steps to take before starting the trial run, including power, valves, and cleanliness.

5.2 Trial Run Procedures

5.2.2 Trial Run and Ambient Conditions

Details the trial run process, including ambient temperature effects.

5.2 Debugging Operation Modes

5.2.2 On-board Debugging Steps

Step-by-step guide for performing debugging directly on the outdoor unit's main board.

5.2 Debugging Module Confirmation

Module Quantity Confirmation Steps

5.2 Debugging Communication Checks

Internal Communication and Component Checks

5.2 Debugging Error Detection (1)

Indoor Component and Outdoor Checks

5.2 Debugging Error Detection (2)

Compressor and Refrigerant Status Checks

6 Common Malfunction and Troubleshooting

Troubleshooting Common Unit Issues

Guides users through common malfunctions like no operation, immediate stops, and abnormal cooling/heating.

7 Error Indication

Indoor Unit Error Codes

7 Outdoor Unit Error Codes

Outdoor Unit Error Codes Listing

7 Additional Error Codes

More Outdoor and Debugging Errors

7 Debugging Progress Codes

Debugging Progress and Status Codes

8 Maintenance and Care

Gree GMV-450WM/E-X Specifications