Benchmark 5000-6000 Boiler Installation & Startup Manual
SECTION 2:
INSTALLATION
OMM-0123_E
• GF-207 • 12/17/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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of
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The external natural gas regulator must be capable of regulating 300,000
– 6,000,000
BTU/Hr (88
– 1758 kW) of natural gas while maintaining
a minimum gas pressure of
14” W.C.
(3.49 kPa)
to the unit.
•
A lock-up style regulator
MUST
be used.
2.9.3.1
Massachusetts Installations Only
For Massachusetts installations, a mandatory external gas supply regulator must be
positioned as shown in Figure 2-10. The gas supply regulator must be properly vented to
outdoors. Consult the local gas utility for detailed requirements concerning venting of the
supply gas regulator.
2.9.3.2
All Installations (Except Massachusetts)
For installations with 3 or more units (other than Massachusetts) that
exceed
1 PSI (6.9 kW)
gas pressure, a separate external gas supply regulator, as shown in Figure 2-10, is highly
recommended. No regulator is required for gas pressures
below
1 PSI (6.9 kW)
of pressure,
but
above
2 PSI (13.8 kW) it is
mandatory
. Consult the
Benchmark Gas Supply Design
Guide
, TAG-0047, GF-2030, and the local gas utility for detailed requirements concerning
venting of the supply gas regulator.
NOTE:
It is the responsibility of the customer to source and purchase the appropriate gas regulator
as described above. However, AERCO offers for sale an appropriate regulator, which may
be ordered at the time of unit purchase or separately. Contact your AERCO sales
representative for more information.
Figure 2-10a: Manual Gas Shut-Off Valve Location
–
Single Fuel
DRIP LEG
NATURAL GAS SUPPLY
2” MANUAL GAS
SHUT-OFF VALVE
GAS PRESSURE
REGULATOR
