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BACnet Gateway for VRF System
1.2 Functionality
The gateway continuously polls (reads) the VRF network for all configured signals and keeps the updated status of
all of them in its memory, ready to be served when requested from the BACnet side.
The role of the gateway consists in associate the elements of the FGL indoor and outdoor units with BACnet
objects.
The control of the indoor and outdoor units through the FGL bus is permitted, so commands toward the FGL indoor
and outdoor units are allowed.
Each indoor and outdoor unit is offered in a set of BACnet objects.
1.3 Capacity of UTY-VBGX
Element
Number of indoor units
Number of outdoor units
Number of VRF systems
Number of Refrigerant systems
Number of Objects
The number of Indoor Units and Outdoor Units may vary on each project. These parameters can be configured
through Configuration Tool (See section 8).
Element
Object supported
• Status
• Command
Gateway
• Error
• Status
• Command
Indoor Unit
• Error
• Status
• Command
Outdoor Unit
• Error
Max. Notes
Number of indoor units that can be controlled through UTY-VBGX
128
Number of outdoor units that can be controlled through UTY-VBGX
100
Number of independent VRF systems that can be controlled through
1
UTY-VBGX
Number of refrigerant systems that can be controlled through UTY-
32
VBGX
5000 Number of FGL control and status objects available into UTY-VBGX.
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