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Benchmark Platinum-Edge [II]: Operation-Service Manual
SECTION 7
– BOILER SEQUENCING TECHNOLOGY
OMM-
0137_E • GF-211 • 12/13/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
97
of
153
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
)
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.
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.
Continued on next page
HEADER TEMP SENSOR
(P/N
24410
)
5 Supply Header-
3 Shield
I/O BOARD STRIP J3
4 Supply
Remote
Remote Signal
–
8 Shield
I/O BOARD STRIP J3
6 Remote Analog In +
7 Remote Analog In
–