Alpha Technologies AlphaGen PN-6x-T 7.5kW 48VDC - Installation and Operation Manual - Manual (Page 31)

745-020-B0-003, Rev. C 31
Fig. 3-6, Utility Gas Service Input
Natural Gas Utility Fuel Connection
3.0 Installation, continued
3.5 Natural Gas Utility Fuel Hookup
These general instructions apply to either remote or collocated systems.
• Connection to the utility fuel line is made using a 3/4" shear point union, 1/2" black iron
pipe, and the appropriate pipe thread sealant suitable for use with natural gas or propane
vapor.
• Use approved pipe thread sealant on all fuel line connections (except fl are fi ttings).
• Thoroughly check the fuel system for vapor leaks. Use an approved leak detector liquid,
or a soap-water solution, with the fuel system pressurized to the cabinet with 0.5 to 1.0
pounds of fuel pressure. Do not use test solutions that contain ammonia or chlorine,
since they prevent soap from bubbling.
• Check and satisfy all local codes before connecting gas to the fuel system.
METER
GAS
NATURAL
STREET PRESSURE
METERED SUPPLY
MANUAL SHUTOFF
STREET REGULATOR
High pressure
excess flow valve
REQUIRED IF METER
CANNOT BE SEEN
MANUAL SHUTOFF
Observe all safety precautions when working with fuel lines. The illustrations on this page
should be considered for general reference only. Installation should ONLY be done by
qualifi ed personnel. Alpha is not liable for gas leaks resulting from inproper installation.
WARNING!