Gree GMV-504WM/B-X - User Manual

Owner's Manual
Air Conditioners
Models:
GMV-224WM/B-X
GMV-280WM/B-X
GMV-335WM/B-X
GMV-400WM/B-X
GMV-450WM/B-X
GMV-504WM/B-X
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GMV-2460WM/B-X
 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.
D.C. Inverter
Multi VRF Modular

Summary

General Safety Precautions

Installation and Handling Safety

Follow instructions, use qualified personnel, ensure proper earthing, and check connections.

Operational Safety Precautions

Operational Safety Guidelines

Avoid inserting objects, ensure ventilation, do not operate with wet hands, and use caution during cleaning.

Preparation before Installation

Site Selection and Installation Guidelines

Provides critical instructions on selecting a suitable and safe location for unit installation.

Refrigerant Piping Specifications

Specifies the outer diameter and wall thickness requirements for refrigerant piping.

Connection Pipe

Overall Piping Connection Schematic

Illustrates the overall piping layout for connecting multiple outdoor and indoor units.

Pipe Length and Height Difference Limits

Defines limits for piping length and height differences between indoor and outdoor units.

R410 A Refrigerant Piping Specs

Details total length, farthest pipe length, and height difference limits for refrigerant piping.

Installation of the Connection Pipe

Connection Pipe Installation Precautions

Outlines principles for piping connection: short length, minimal bends, and proper radius.

Air Purging and Refrigerant Charge

Air Purging Process Steps

Describes the steps for performing air purging using a vacuum pump.

Refrigerant Charging for Piping

Guides on calculating and adding refrigerant for connecting pipes longer than 1m.

Total Refrigerant Charge Calculation

Explains how to calculate total refrigerant charge based on pipeline and module capacities.

Electric Wiring

Electrical Wiring Safety Precautions

Highlights safety and regulatory requirements for electrical wiring installation.

Power Cord Connection Procedure

Illustrates the correct method for connecting power cords to the units.

Circuit Breaker and Wire Size Specs

Provides tables for circuit breaker capacity and wire sizes based on unit models.

Indoor Unit Electrical Specs

Auxiliary Heater Unit Electrical Specs

Power Cord Connection Safety Measures

Emphasizes safety precautions for connecting power cords, including grounding.

External Electrical Wiring Diagram

Single and Modular Unit Wiring Diagrams

Provides diagrams for external electrical wiring of single and modular VRF systems.

Check Items after Installation and Trial Run

Installation Completion Checklist

Lists crucial checks to perform after the unit installation is complete.

Trial Run Preparations and Notes

Details preparations and important notices before commencing the trial run.

Debugging Progress Stage Overview

Outlines the different stages of the debugging process with LED indicators.

Debugging: Compressor Preheat Check

Debugging: Refrigerant Status Check

Debugging: Outdoor Valve Status Check

Debugging: Startup Confirmation

Describes progress stage 12 for confirming the startup readiness.

Appendix: Normal Operational Parameter Judgment

ODU Normal Operation Parameters

ODU Debug Parameter References

IDU Normal Operation Parameters

Common Malfunction and Troubleshooting

General Malfunction Troubleshooting

Lists common phenomena, reasons, and measures for troubleshooting unit problems.

Unit Operation Malfunction Troubleshooting

Addresses issues like immediate stopping, mist from unit, and noise emission.

Error Indication

Interpreting Malfunction Codes

Explains how to interpret malfunction codes by combining symbols and numbers.

Indoor;Outdoor Unit Error Code Reference

Details specific error codes related to indoor and outdoor unit malfunctions.

Gree GMV-504WM/B-X Specifications