Bst Implementation Instruction - Watts AERCO Edge CFR 3000 Operator's And Service Manual

SECTION 7 BOILER SEQUENCING TECHNOLOGY
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 properly.
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.
The BST setup options are:
1. Constant Setpoint
2. Remote Setpoint, which includes two options:
•
Analog Input (4-20mA, 0-20mA, 1-5V, or 0-5V)
•
BAS Mode (Network or BAS)
3. Outdoor Air Temperature Reset.

7.2 BST Implementation Instruction

The instructions below refer to I/O board connections on the CFR boilers. The instructions in the
sections below refer to one or more of the following components:
•
Header Temp Sensor P/N 61058 (PT1000) dual bead
•
Outdoor Sensor P/N 61060 (PT1000)
The wiring diagram below applies to the setup instructions in the next three sections.
• • •