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Benchmark Platinum-Edge [II]: Operation-Service Manual
SECTION 7 – BOILER SEQUENCING TECHNOLOGY
7.3.5 Option 5 Remote Setpoint: Direct Wired Header Temp Sensor &
4-20ma Setpoint Drive
OPTION 5 Instructions: Remote Setpoint, Direct Wired Header Temp Sensor, 4-20ma Setpoint
Drive
NOTE:
Both Header Temp Sensor and 4-20ma Direct Drive must be wired. See the Edge Controller
Manual (OMM-0139, GF-213) for more information.
Step 1: HEADER TEMP SENSOR WIRING – BST MANAGER Unit
1. On the BST Manager unit, connect the Header Temp Sensor (P/N 24410) to the I/O
board terminal strip J3, terminals 4 (Supply Header +) and 5 (Supply Header -).
2. Connect the shield to any Shield terminal, such as terminal 3 or 8 on strip J3.
NOTES:
•
The Header Temp Sensor must be installed between 2 and 10 feet (0.61 and 3.1m)
downstream of the LAST boiler in the plant's supply water header.
•
Shielded pair 18 - 22 AWG cable is recommended for Header Temp Sensor wiring.
There is no polarity to be observed. The ground for the shield is at the Shield terminal
on the I/O the board. The sensor end of the shield must be left free and ungrounded.
HEADER TEMP SENSOR
(P/N 24410)
Step 2: DIRECT WIRED 0-20mA or 4-20mA WIRING – BST MANAGER Unit
1. Connect the 4-20mA or 0-20mA terminals from the Direct Drive source to the I/O board
strip J3, terminals 6 (Remote Analog In +) and 7 (Remote Analog In –) on the BST
Manager.
2. Connect the shield to any Shield terminal on the I/O board, such as terminal 3 or 8.
NOTES:
•
Shielded pair 18 - 22 AWG cable is recommended for this connection. Polarity must be
observed.
•
The ground for the shield is at the driver signal source.
Remote Signal +
Remote Signal –
OMM-0137_E • GF-211 •
12/13/2019
6 Remote Analog In +
7 Remote Analog In –
8 Shield
I/O BOARD STRIP J3
Continued on next page
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
3 Shield
4 Supply Header+
5 Supply Header-
I/O BOARD STRIP J3
Page 97 of 153
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