Applications - Metasys - Part No. 24-10143-1183 - SI-VRFCBN02-0Sx - Gateway/Router - VRF Smart Gateway - Release 1.2.1

VRF Smart Gateway Installation Guide

Product name
VRF Smart Gateway
Document type
Installation Guide
Document number
Part No. 24-10143-1183
Document revision
Rev. H
Release 1.2.1
Revision date

You can use the Johnson Controls® Variable Refrigerant Flow (VRF) Smart Gateway to integrate the York or Hitachi branded VRF system with a Building Automation System (BAS), such as the Metasys® system. The VRF Smart Gateway bridges communication between the native H-Link communications network of the Hitachi VRF system and the open building standard BACnet®/IP network. The VRF Smart Gateway transmits the VRF device and point data over the BACnet/IP network in a way that the BAS can easily discover and process. The VRF Smart Gateway therefore requires little or no post-integration configuration within the BAS. The VRF Smart Gateway includes a simple web server that provides a wireless mobile user interface for configuring communication parameters and performing VRF system discovery and device naming. The wireless connection on the VRF Smart Gateway allows users of a supported mobile device to be up to 30 m (100 ft, line of sight) away.

The VRF Smart Gateway also includes the following features and benefits:

  • Supports up to 64 VRF systems.
  • Supports up to 160 Indoor Units, and up to a combined total of 200 Indoor and Outdoor Units. However, the stability and reliability of communications across the H-LINK network is increased for each VRF Smart Gateway network if you limit each H-LINK segment to under 100 units.
    Note: Mutli-module outdoor units in a system count as one single outdoor unit.
  • Integrates with both Metasys and Facility Explorer® (FX) building automation systems.
  • Integrates with third party building automation systems that support the BACnet IP protocol.
  • Supports BACnet Gateway (B-GW) and BACnet Application Specific Controller (B-ASC) device profiles.
  • Supports BACnet IP (Annex J) and BACnet Broadcast Management Device (BBMD).
  • Provides BACnet Command Priority enforcement.
Note: There may be communication issues when any Hitachi Central Controller is on the network simultaneously with the VRF Smart Gateway. At this time, it is recommended to only have one or the other connected to avoid potential communication errors.