Benchmark Platinum-Edge: Operation-Service Manual
SECTION 7 – BOILER SEQUENCING TECHNOLOGY
OMM-0137_D • GF-211
•
7/16/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 87 of 146
7.3.3 Option 3 Outdoor Reset: Direct Wired Header Sensor & Direct
Wired Outdoor Sensor
OPTION 3
Instructions: Outdoor Reset, Direct Wired Header Sensor & Outdoor Sensor
NOTE:
Both
Header Sensor
and
Outdoor Sensor
must be wired. See the
Edge Controller Manual
(OMM-0139, GF-213) for more information.
Step 1: DIRECT WIRED
HEADER SENSOR WIRING – MANAGER Unit
1. On the
Manager
unit, connect the Header Temperature 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 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 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
OUTDOOR SENSOR WIRING – MANAGER Unit
1. On the
Manager
Unit, connect the Outdoor Temperature Sensor (P/N
61048
) to the I/O
board terminal strip
J3
, terminals
1
(
Outside Temp
+
)
and
2
(
Outside Temp
-). Connect the
shield to terminal 3 (
Shield
).
NOTES:
•
Twisted shielded pair 18 - 22 AWG cable is recommended for header sensor wiring.
There is no polarity to be observed. The sensor end of the shield must be left free and
ungrounded.
•
When mounting the Outdoor sensor, it
must be located on the North side of the
building
where an average outside air temperature is expected. The sensor must be
shielded from direct sunlight as well as impingement by the elements. The outdoor
sensor may be wired up to 200 feet (61m) from the boiler.
Continued on next page
OUTDOOR TEMP SENSOR
(P/N
61048
)
I/O BOARD, STRIP J3
HEADER TEMP SENSOR
(P/N
24410
)
5 Supply Header-
3 Shield
I/O BOARD STRIP J3
4 Supply
2 Outside Temp -
3 Shield
1 Outside Temp +
