.
All the different AERCO configurations for the various protocols are stored within the ProtoNode
and are selectable via DIP switches for fast and easy installation. There is no need to download
any configuration files to support the required applications.
AERCO’s Communications Gateway Supports WHM and BST
AERCO has co-developed the ProtoNode to communicate between systems of AERCO units
(for example: multiple water heaters running Onboard Water Heater Management (WHM) or
multiple AERCO Boilers running Boiler Sequencing Technology (BST). The AERCO ProtoNode
in SSD mode eliminates multiple master issues and is included with all AERCO’s
Communications Gateway ProtoNodes. Use SSD mode to enable a Building Automation
System Modbus master to bi-directionally communicate to BST and WHM Modbus masters.
The AERCO SSD device is unique because it enables two Modbus masters to bi-directionally
communicate over RS-485. The AERCO SSD device is also specifically designed to support the
BST/WHM Automatic failover Feature. While the BST/WHM role can be transferred to another
unit (with a different Modbus address) the SSD device operates at a fixed and constant Modbus
address. The fixed SSD address is propagated to each unit and allows the BST/WHM master to
resume communications after a failover without BAS changes.
This manual provides the necessary information to assist the Installers of the boilers/heaters
with the installation of the ProtoNode FPC-N34 on BACnet MS/TP, BACnet/IP, Modbus TCP
and Metasys N2 by JCI networks and installation of the ProtoNode FPC-N35 on a LonWorks
network.
BACnet International BTL certification is the highest level of BACnet conformance tests that a
product can be subjected to.
• The ProtoNode FPC-N34 is BACnet Certified by the BACnet Testing Laboratory (BTL).
• The ProtoNode FPC-N35 is LonMark Certified by LonMark International.
The ProtoNode units feature a small form factor, as indicated in Figure 1.1
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General