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Benchmark 2500DF-3000DF Installation, Operation & Maintenance Manual
2.4 SITE PREPARATION
Ensure that the site selected for installation of the Benchmark Boiler includes:
• Access to AC Input Power at 208-230 VAC, Three-Phase, 60 Hz @ 20 Amps
OR 460 VAC, Three-Phase, 60 Hz @ 15 Amps
• Access to NATURAL GAS line at a minimum pressure of 8" W.C. with unit in operation
(approximately 20" W.C. static) or PROPANE Gas line at a minimum pressure of 4" W.C.
at full (100%) fire rate.
2.4.1 Installation Clearances
The Benchmark 2500 & 3000 Models are packaged in an enclosure having identical exterior dimensions.
The unit must be installed with the prescribed clearances for service as shown in Figure 2-1. The
minimum clearance dimensions, required by AERCO, are listed below. However, if Local Building Codes
require additional clearances, these codes shall supersede AERCO's requirements. Minimum acceptable
clearances required are as follows:
• Sides: 24 inches
• Front : 24 inches
• Rear:
24 inches
• Top:
18 inches
All gas piping, water piping and electrical conduit or cable must be arranged so that they do not interfere
with the removal of any panels, or inhibit service or maintenance of the unit.
NOTE
Ensure that
condensate
assembly is not
located over
the
housekeeping
pad.
Figure 2-1: Benchmark Boiler Models 2500 & 3000 Clearances
Page 16 of 234
05/21/2014
CHAPTER 2 – INSTALLATION
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
OMM-0099_0A
GF-145
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