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G.1. Gas Piping Requirements
Install gas piping in accordance with local codes
and regulations of the local utility company. In
the absence of local codes, the installation must
conform to the specifications of the national
Fuel Gas Code, ANSI Z223.1 – latest edition.
IMPORTANT:
Connect this unit only to gas
supplied by a commercial utility.
G.1.1. Pipe Material Requirements
Ridged black iron pipe and fittings are
recommended for the gas lines, or other
materials as local codes allow or considered
best practice. The use of flexible connectors is
not recommended. Install a Union joint near the
unit, after the cut off valve, for service.
G.1.2. Tools Required
Pipe wreches, Pliers, gas rated thread sealent,
and leak detection fluid or soap and water is
required.
G.1.3. Code Requirements
Local codes should be followed for the
installation and marking of the gas piping. In
the absence of local codes follow the National
Fuel Gas Code NFPA 54 ANSI Z223.1 (Latest
Revision), International Fuel Gas Code IFGC
408.4(Latest Revision), or the Canadian CANCGA
B149.1HB (Latest Revision), must be followed.
G.1.4. Gas pressures and regulation
IMPORTANT:
ENSURE that the furnace gas
valve is not to be subjected to high gas line
supply pressures.
DISCONNECT
the furnace and its individual
manual gas stop from the gas supply piping
during any pressure testing that exceeds 1/2
PSIG (3.48 kPa). Natural gas supply pressure
must be 5” to 10.5” w.c. LP gas supply pressure
must be 11” to 13” w.c. This pressure must be
maintained with all other gas-fired appliances
in operation. The minimum gas supply pressure
to the gas valve for proper furnace input
adjustments is 5” w.c. for natural gas, however
6” to 7” is recommended. The minimum gas
supply pressure is 11” w.c. for LP gas.
See sections
J.5.1.1. “Measuring and
Adjusting Supply Gas Pressures” and J.5.1.2.
“Measuring and Adjusting Manifold Gas
Pressures”
for more details.
G. GAS
WARNING
ELEVATIONS ABOVE 2000 FT. REQUIRE THAT THE FURNACE
INPUT RATING BE ADJUSTED AND THAT THE SIZE OF
THE BURNER ORIFICES BE RECALCULATED BASED ON
ELEVATION AND GAS HEATING VALUE. THE BURNER
ORIFICES MAY (OR MAY NOT) NEED TO BE CHANGED. SEE
THE SECTION TITLED “HIGH ALTITUDE INSTALLATIONS” OF
THIS BOOK FOR INSTRUCTIONS.
Summary of Contents for Climate Master RGED Series
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