Instruction Manual

Benchmark 750/1000 Boiler Installation, Operation & Maintenance Manual
CHAPTER 2 – INSTALLATION
OMM-0082_0J AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 25 of 192
GF-130 Ph.: 800-526-0288 05/21/2014
THE AC POWER OUTLETS SHOWN IN ERROR! REFERENCE
SOURCE NOT FOUND. 2-9 ARE LIMITED TO 600 WATTS (5
AMP) SERVICE. DO NOT OVER-LOAD THESE OUTLETS.
ALSO, THE FUSIBLE LINK SHOWN IN FIGURE 2-9 DOES NOT
REMOVE POWER FROM THE TERMINAL BLOCKS OR AC
OUTLETS.
Figure2-9: Power Box Internal Components
With the exception of the transformer shown in Error! Reference source not found. 2-9, all of
the components in the Power Box are mounted on a DIN rail.
NOTE
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.
2.9.1 Electrical Power Requirements
The Benchmark Boiler accepts 120 VAC, single-phase, 60 Hz @ 20A. The Power Box contains
terminal blocks as shown in Figure 2-10. In addition, a label showing the required AC power
connections is provided on the front cover of the Power Box as shown in Figure 2-8.
WARNING
12V POWER
SUPPLY
FUSE BLOCKS
(2)
FUSIBLE
DISCONNECT
AC POWER
OUTLETS (2)
TERMINAL BLOCKS
24 V POWER SUPPLY
(SEQUENCING VALVE)
FLAME ROD SIGNAL
AMPLIFIER
TRANSFORMER
115V/24V