Watts AERCO Benchmark BMK5000 - Page 126

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 7 – BOILER SEQUENCING TECHNOLOGY
OMM-0145_D • GF-218 • 11/2/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 126 of 213
OPTION 7 Instructions: Remote Setpoint, Modbus Header Temp Sensor & 4-20ma Setpoint
Drive
OPTION 7 Step 3: CONNECT BOILERS IN DAISY CHAIN
1. Connect the boilers in a daisy chain, as shown below.
OPTION 7 Step 4: OPTION 7 CONFIGURATION
Using the Modbus Transmitter gives the plant the ability to use the Backup manager
feature. This allows any of the client units to become a Backup manager if the manager
unit is not communicating.
On All Boilers:
1. Go to: Main Menu → Advanced Setup → BST Cascade → Cascade Configuration:
• Set the Unit Mode parameter to BST Client.
2. Go to: Main Menu → Advanced Setup → BST Cascade → Cascade Communication:
• Set the Unit Address parameter to the communication address of the unit.
Continued on next page
SD-A-1012 rev C