AERCO Innovation (G-14-2265 and above) - Manual (Page 27)

Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 2 – INSTALLATION
OMM-0078_0L
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Page 27 of
206
GF-128
Phone: 800-526-0288
PRI: 11/25/2014
2.10.3 External Gas Supply Regulator
An external gas pressure regulator is required on the gas inlet piping under most conditions
(see sections 2.10.3.1 and 2.10.3.2, below). Regulators must conform to the following
specifications:
• The external natural gas regulator must be capable of regulating 200,000 – 3,180,000
BTU/HR of natural gas while maintaining a gas pressure of 8.0” W.C. minimum to the
unit.
• A lock-up style regulator MUST be used when gas supply pressure will exceed 14” W.C.
2.10.3.1 Massachusetts Installations Only
For Massachusetts installations, a mandatory external gas supply regulator must be
positioned as shown in Figure 2-8. 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.
2.10.3.2 All Installations (Except Massachusetts)
For all installations (other than Massachusetts) that EXCEED 7” W.C. gas pressure, a
mandatory external gas supply regulator must be positioned as shown in Figure 2-8. No
regulator is required for gas pressures below 7” W.C. of pressure. Consult the local gas utility
for detailed requirements concerning venting of the supply gas regulator.
Figure 2-8. Manual Gas Shut-Off Valve Location
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 AERCO for more
information.
1” MANUAL
SHUTOFF
VALVE
NATURAL GAS
SUPPLY
DIRT TRAP
GAS PRESSURE
REGULATOR