Installation Notes; Bst Quick Start Chart - Watts Aerco Benchmark Series Operation And Service Manual

Benchmark Platinum-Edge: Operation-Service Manual
SECTION 7 – BOILER SEQUENCING TECHNOLOGY

7.1.1 Installation Notes

Unlike earlier Benchmark versions with the C-More Controller, ProtoNode is no longer needed
except for LonWorks or Johnson Controls N2 communications.
However, if your installation still includes a ProtoNode SSD (Client-Client Device), you must
adhere to the procedure listed below. Failure to complete these steps can result in the failure of
the BST system.
a) Do NOT install the ProtoNode device at the outset of the installation. If the ProtoNode
device is already installed, you must physically disconnect it from the Modbus network on
the I/O board.
b) Make sure that the Modbus load and bias resistors are properly configured for the system
to operate without the ProtoNode installed.
c) Temporarily set the BST system for Constant Setpoint mode of operation (see below).
d) Turn on and completely test the installation to verify that it is operating proper.
e) Once the installation is working properly as a BST system, install the ProtoNode device.
f) Make sure that the Modbus load and bias resistors are properly configured for the system
to operate with the ProtoNode installed.
g) Set the BST system for desired mode of operation (Setpoint mode).
h) Test the system completely with the ProtoNode installed.

7.2 BST QUICK START CHART

Select the single option that suites your installation and then complete the instructions in the
corresponding sub-sections of section 7.3 BST Implementation Instructions.
Constant Setpoint (choose option 1 or 2)
Option 1 – Direct Wired Header (Header Temp)
Option 2 – Modbus Header (Network)
Outdoor Reset (choose option 3 or 4)
Option 3 – Direct Wired Header AND Direct Wired Outdoor Air
Option 4 – Modbus Header AND Modbus Outdoor Air
Remote Setpoint (choose option 5 through 8)
Option 5 – 4-20ma Drive AND Direct Wired Header
Option 6 – Modbus Drive AND Direct Wired Header
Option 7 – 4-20ma Drive AND Modbus Header
Option 8 – Modbus Drive AND Modbus Header
OMM-0137_D • GF-211 • 7/16/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
Complete section 7.3.1
Complete section 7.3.2
Complete section 7.3.3
Complete section 7.3.4
Complete section 7.3.5
Complete section 7.3.6
Complete section 7.3.7
Complete section 7.3.8
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