Field Control Wiring - I/O Board - Watts AERCO Benchmark BMK750 Installation And Start-Up Manual

Benchmark Platinum-Edge [ii]: Installation Manual
SECTION 2 – INSTALLATION
12V POWER SUPPLY
Figure 2-9b: BMK2500 – 6000 Power Panel Internal Components
NOTES:
•
The 115V to 24V transformer provides power for the Edge Controller and the Sequencing
Isolation Valve. It is mounted on the back side of the Main Power Panel. All other
components in the Power Panel are mounted on a DIN rail on the front side of the panel.
•
All electrical conduit and hardware must be installed so that it does not interfere with the
removal of any unit covers, inhibit service/maintenance, or prevent access between the
unit and walls or another unit.
2.11 FIELD CONTROL WIRING – I/O Board
Each unit is fully wired from the factory with an internal operating control system. No field control
wiring is required for normal operation. However, the Edge Controller used with your Benchmark
unit does allow for some additional control and monitoring features. Wiring connections for
these features are made on the Input/Output (I/O) board located behind the unit's removable
front panel, as shown in Figure 2-10.
SECONDARY
POWER PANEL
(cover removed)
Figure 2-10: Power Panel and Input/Output (I/O) Board Location
• GF-210 •
OMM-136_G
WIRE CONDUITS
FUSE BLOCK
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
8/20/2020
FUSE BLOCK
POWER
BREAKER
TERMINAL BLOCKS
MAIN POWER
PANEL
(cover removed)
I/O BOARD
(with protector)
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