Specifications

Benchmark Series Boilers GF-2060
Electrical Power Guide
TAG-0048_0I
PRI 11/08/2013 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: [phone] Page 5 of 8
Provisions for Service
Designers must provide emergency shutoffs and other devices to satisfy electrical codes. It is also
recommended to provide an electrical shutoff disconnect switch of suitable load carrying characteristics on or
near each BMK boiler. No electrical boxes or field components should be mounted to the surface of the
boiler or where they would interfere with the removal of the side or top panels for maintenance. The service
disconnect switch should be mounted near the unit, as illustrated in Diagram 1. Wiring conduit, EMT, or
other wiring paths should not be secured to the unit, but supported externally. Electricians should be
instructed as to where the wiring conduit should be located, such as away from the relief valve discharge,
drains, etc. All electrical conduit and hardware should be installed so that it does not interfere with the
removal of any covers, inhibit service or maintenance, or prevent access between the unit and walls or
another unit.
Boiler Wiring
A dedicated protected circuit should be provided from the power source to the boiler. No other electrical
devices should be permanently wired on the same circuit. An emergency switch (electrical shutoff) must be in
series with the power to the unit. For applicable wiring connections, refer to the following Diagrams:
• Diagram 4: 120V/1
∅
/60 Hz @ 20 amps (BMK 750/1000/1500/2000)
• Diagram 5: 208-230/3
∅
/60 Hz @ 20 amps (BMK 2500/3000)
• Diagram 6: 208/3
∅
/60 Hz @ 30 amps (BMK 6000)
• Diagram 7: 460/3
∅
/60 Hz @ 15 amps (BMK 2500/3000)
• Diagram 8: 460/3
∅
/60 Hz @ 20 amps (BMK 6000)
Multiple Unit Wiring
Whenever multiple units are installed within the same mechanical spaces, electrical code requirements call
for a single electrical shutoff for emergency use. It is the responsibility of the electrical designer to comply
with local codes and regulations affecting an individual installation.
Diagram 4: BMK 750/1000/1500/2000: 120VAC/1
∅
/60 Hz Wiring Schematic