For Gas-Fired Steam Generators
:
Post in a prominent location, instructions to be followed in the event the
user smells gas. This information shall be obtained by contacting local gas supplier. Install a sediment trap
( drip leg) in the gas supply line, then connect gas supply piping to the boiler gas valve piping. GAS-FIRED
EQUIPMENT IS DESIGNED FOR INSTALLATION ONLY IN NON- COMBUSTIBLE LOCATIONS. THIS
INCLUDES THE FLOORING THAT WILL BE DIRECTLY UNDER THE EQUIPMENT. Location, plumbing
size, and pressure data are shown on the specification sheet. Boilers rated less than 225,000 BTU require
3/4-inch IPS gas supply piping, and boilers rated at 225,000 BTU or more require 1-inch IPS gas supply
piping. Natural gas pressure must be between 4"- 14" water column, and L.P. gas supply pressure must be
between 12" - 14" Water column. NEVER EXCEED 14' WATER COLUMN (1/2 psi) GAS PRESSURE. If the
gas supply pressure exceeds 14" water column, a pressure regulating valve must be installed in the gas
supply plumbing to reduce the gas pressure to less than 14" Water column. Installation must be in
accordance with local codes or in the absence of local codes, with the National Fuel Gas Code, ANSI
Z223.1-1984. Installation in Canada must be in accordance with Installation codes for Gas Burning.
Appliances and Equipment B149.1 and B149.2. Use a gas pipe joint compound which is resistant to LP gas.
Turn the gas valve control knob to ON (the word "on" on the knob will be opposite the index on the valve's
body). Test all pipe joints for leaks with soap and Water solution. Never obstruct the flow of combustion and
ventilation air. Observe all clearance requirements to provide adequate air openings into the combustion
chamber. The appliance and its individual shut-off valve must be disconnected from the gas supply piping
system during any pressure testing of that system at test pressures in excess of 14" water column (1/2 psi or
3.45 kPa). The appliance must be isolated from the gas supply piping system at test pressures equal to or
less than 14" water column (1/2 psi or 3.45 kPa). A permanent 115 volt electrical connection is required at
the junction box. The junction box location is shown on the specification sheet. The unit must be electrically
grounded by the installer.
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