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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 1500 and Benchmark 2000 models are available in one voltage configuration:
•
120 VAC, Single-Phase, 60 Hz @ 20 Amps
The Power Box contains terminal blocks as shown in Figure 2-9. In addition, a label showing the
required AC power connections is provided on the front cover of the Power Box as shown in
Figure 2-10.
Figure 2-10: Power Box Cover Labels – 120VAC
Each unit must be connected to a dedicated electrical circuit. NO OTHER DEVICES SHOULD
BE ON THE SAME ELECTRICAL CIRCUIT AS THE BOILER.
A three-pole switch must be installed on the electrical supply line in an easily accessible location
to quickly and safely disconnect electrical service. DO NOT attach the switch to sheet metal
enclosures of the unit.
After placing the unit in service, the ignition safety shutoff device must be tested. If an external
electrical power source is used, the installed boiler must be electrically bonded to ground in
accordance with the requirements of the authority having jurisdiction. In the absence of such
requirements, the installation shall conform to National Electrical Code (NEC), ANSI/NFPA 70
and/or the Canadian Electrical Code (CEC) Part I, CSA C22.1 Electrical Code.
For electrical power wiring diagrams, see the AERCO Benchmark Electrical Power Guide, (GF-
2060).
OMM-0097_0C
GF-142
Benchmark 1500 - 2000 Boilers
CHAPTER 2 – INSTALLATION
NOTE
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
Page 25 of 184
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