Gree H2M Owner's Manual
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Gree H2M Owner's Manual

Gree H2M Owner's Manual

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Owner's Manual
Original Instructions
H2M Gateway
Models:
ME31-33/EH1(M)

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Summary of Contents for Gree H2M

  • Page 1 Owner's Manual Original Instructions H2M Gateway Models: ME31-33/EH1(M)
  • Page 2 To Users Thank you for selecting Gree’s product. Please read this instruction manual carefully before installing and using the product, so as to master and correctly use the product. In order to guide you to correctly install and use our product and achieve...
  • Page 3 (5) The final right to interpret for this instruction manual belongs to Gree Electric Appliances Inc. of Zhuhai.

  • Page 4: Table Of Contents

    Contents 1 SAFETY NOTICES (PLEASE BE SURE TO ABIDE) ........ 1 2 OPERATION NOTICES ................2 3 FUNCTIONS INTRODUCTION ..............3 4 PARTS ......................3 5 DETAILED INTRODUCTION ..............4 5.1 PORTS ..........................4 5.2 LED DISPLAY ........................5 5.3 DIP SWITCH ........................6 6 INSTALLATION ..................

  • Page 5: Safety Notices (Please Be Sure To Abide)

    H2M Gateway 1 Safety Notices (Please be sure to abide) Warning: If not abide strictly, it may cause severe damage to the unit or the people. Note: If not abide strictly, it may cause slight or medium damage to the unit or the people.

  • Page 6: Operation Notices

    H2M Gateway 2 Operation Notices Notice! (1) This appliance is powered by the indoor unit of air conditioner. Do not connect other power source to this appliance, otherwise it may cause fire hazard and damage the appliance. (2) Before touching the electric components, please be sure the appliance is disconnected to power.

  • Page 7: Functions Introduction

    This gateway is applicable for Gree Multi VRF Units (CAN Communication). The upper units of Modbus can control the VRF indoor units (CAN Communication) through H2M Gateway. One upper unit of Modbus can directly control one (or more) indoor units.

  • Page 8: Detailed Introduction

    H2M Gateway 5 Detailed Introduction 5.1 Ports 5.1.1 Diagram of Ports Fig.5.1 Diagram of Ports...

  • Page 9: Led Display

    H2M Gateway and communicate with H2M Gateway; RS485 communication port: It is connected to Modbus through a 2-core communication wire. It is used for the communication between H2M Gateway and the upper unit of Modbus. IO port: Reserved function port.

  • Page 10: Dip Switch

    H2M Gateway 5.3 DIP Switch Attention! Before using this device, please set its DIP switch first; otherwise the device will not work! Gateway’s DIP switch is built within. Before setting, screw off the locating screws on the sides of the gateway and then open the cover. The allocation of DIP switch is shown below.
  • Page 11 Modbus, otherwise communication failure will occur. After changing a device address, restart the gateway to enable the new address. Address range of H2M Gateway: 1~255. Please refer to the Address table of DIP Switch for specific switch codes. For example:...
  • Page 12 H2M Gateway Address Table of DIP Switch Addr...
  • Page 13 H2M Gateway The method of setting address 43 is as below: Address Table of DIP Switch Addr...
  • Page 14 For the connection method of master/slave HBS device, please refer to Section 6.2.1. In an HBS network, if H2M Gateway is the only device that is connected to indoor units, it should be set as the master HBS device. Turn the 1 lever of function DIP switch S3 to 1.
  • Page 15 For the method of connecting gateway to Modbus, please refer to Section 6.2.2. If H2M Gateway is at the end of Modbus, it should be set to be with matched resistance. Turn the 2 lever of function DIP switch S3 to 0;...

  • Page 16: Installation

    H2M Gateway 6 Installation 6.1 Dimensions and Installation Method 6.1.1 Dimensions Fig.6.1 Product Dimensions...
  • Page 17 H2M Gateway 6.1.2 Installation Method Once the gateway's DIP switch setting is finished, re-install the gateway's cover and secure it with screws. Install the gateway in a proper place indoors. We recommend installing it horizontally in an electric control cabinet, with its front facing upward.

  • Page 18: Communication Connection

    H2M Gateway 6.2 Communication Connection The communication system of H2M Gateway includes: (1) HBS Communication: Communication between H2M Gateway and indoor units (2) RS485 (Modbus) Communication: Communication between H2M Gateway and the upper units of Modbus 6.2.1 HBS Communication Connection (1) Selection of Communication Wire Fig.6.3 Length of Communication Wire...
  • Page 19 H2M Gateway Total length Wire material Wire size Material communicati Remarks type /AWG) standard on line L (m/feet) ① Total length of communication line can't exceed 250m Light/Ordinary (820-1/5feet). ② The cord shall be polyvinyl L≤250m ≥2×0.75 mm chloride Circular cord (the (L≤820-1/5fe...
  • Page 20 H2M Gateway Fig.6.4 One gateway controls one Fig.6.5 One gateway and one wired indoor unit controller control one indoor unit...
  • Page 21 H2M Gateway Fig.6.6 One gateway controls multiple indoor units Fig.6.7 One gateway and one wired controller control multiple indoor units...
  • Page 22 Notice: (1) The HBS port of H2M Gateway has no polarity, thus we don't have to consider the polarity of HBS port. (2) Series of indoor units include: ① common VRF units; ②Fresh air units;...
  • Page 23 Two terminal of RS485 port should be connected respectively to terminal A, B of the RS485 port of the upper unit of Modbus. The RS485 port of H2M Gateway has no polarity, thus we don't have to have to consider the polarity of terminal during wiring.
  • Page 24 H2M Gateway Fig.6.8 Series Connection of Modbus Devices Fig.6.9 Star Connection is forbidden for Modbus Devices (3) Communication Connection Configuration Before using the gateway, please set its DIP switch first; otherwise Modbus will not communicate normally! Step 1: Set the device address through DIP switch according to Section 5.3.2;...

  • Page 25: Appendix A: Address Table Of Dip Switch

    H2M Gateway Appendix A: Address Table of DIP Switch 0~26 address table of DIP switch 27~53 address table of DIP switch addr addr...
  • Page 26 H2M Gateway 54~80 address table of DIP switch 81~107 address table of DIP switch addr addr...
  • Page 27 H2M Gateway 108~134 address table of DIP switch 135~161 address table of DIP switch addr addr...
  • Page 28 H2M Gateway 162~188 address table of DIP switch 189~215 address table of DIP switch addr addr...
  • Page 29 H2M Gateway 216~235 address table of DIP switch 236~255 address table of DIP switch addr addr...

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