Option 6 Remote Setpoint: Direct Wired Header Temp Sensor & Modbus Setpoint Drive (Via Protonode) - Watts Aerco Benchmark BMK750 Operation And Service Manual

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 7 – BOILER SEQUENCING TECHNOLOGY
Option 6 Remote Setpoint: Direct Wired Header Temp Sensor & Modbus
7.3.6
Setpoint Drive (via ProtoNode)
OPTION 6 Instructions: Remote Setpoint, Direct Wired Header Temp Sensor, Modbus Setpoint
Drive via ProtoNode
NOTE:
Both Header Temp Sensor and Outdoor Sensor must be wired. See the Edge [i] Controller
Manual (OMM-0141, GF-213-B) for more information.
OPTION 6 Step 1: HEADER TEMP SENSOR WIRING – BST MANAGER Unit
1. On the BST Manager unit, connect the Header Temp Sensor to the Feed Forward
(FFWD) terminals on the P-1 Harness via the terminal block labeled Header Temp sensor
on the I/O Board.
2. Ground the shield to any SHLD terminal on the I/O Board.
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 SHLD terminal on
the I/O Board. The sensor end of the shield must be left free and ungrounded.
HEADER TEMP SENSOR
OPTION 6 Step 2: CONFIGURE AND CONNECT SSD DEVICE (PROTONODE)
1. Connect the ProtoNode per the instructions in one of the ProtoNode FPC N34, FPC-N35
Manuals:
•
For FPC-N34 (P/N 64129) or FPC-N35 (P/N 64130), see OMM-0107 (GF-150).
•
For FPC-N34 (P/N 64168) or FPC-N35 (P/N 64169), see OMM-0150 (GF-150_B).
OMM-0145_D • GF-218 •
11/2/2020
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I/O BOARD
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