AERCO Modulex EXT 321 - 1123 - Manual (Page 36)

MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
Figure 3-14: Caps and Plugs Used for Closing Up Vacated Gas and Hydraulic
Connection Openings
3.9 Gas Connection General Information
For natural gas connections, refer to section 3.9.1. For propane gas connections, refer to
section 3.9.2.
The gas supply connection must comply with local regulations or, if such regulations do not exist,
with the National Fuel Gas Code, ANSI Z223.1/NFPA 54.
For Canada, the gas connection must comply with local regulations or, if such regulations do not
exist, with the CAN/CSA-B149.1 - Natural Gas and Propane Installation Code.
Before installing the boiler it is recommended that all the supply piping be thoroughly cleaned in
order to remove any residual grime which could compromise the boilers correct functioning.
As a safety measure against gas leaks, AERCO recommends installing a surveillance and
protective system made up of a gas leakage detector combined with an on-off solenoid valve on
the gas supply line.
The boiler and its individual shutoff valve must be disconnected from the gas supply piping system
during any pressure testing of that system at test pressures in excess of 1/2 PSI (3.5kPa).
The boiler must be isolated from the gas supply piping system by closing its individual manual
shutoff valve during any pressure testing of the gas supply piping system at test pressures equal
to or less than 1/2 PSI (3.5 kPa).
Page 36 of 148 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0087_0E
12/01/14 Phone: 800-526-0288 GF-143