27
Consistent gas pressure is essential at
ALL
gas connections. It is recommended that a 3/4-inch pipe gas
loop be installed in the supply line serving a bank of dryers. An in-line pressure regulator
must be
installed in the gas supply line (header) if the (natural) gas pressure exceeds 12.0 inches of water column
pressure. Refer to the
illustrations
on
page 25
for details.
NOTE
: A water column (W.C.) test pressure of 3.5 inches for natural gas and 10.5 inches for L.P.
(liquid propane) dryers is required at the gas valve pressure tap of each dryer for proper and
safe operation.
A 1/8" N.P.T. plugged tap, accessible for a test gauge connection,
must be
installed in the main gas
supply line immediately upstream of each dryer.
IMPORTANT
: Pipe joint compounds that resist the action of natural gas and L.P. gas
must be
used.
NOTE
:
Test
ALL
connections for leaks by brushing on a soapy water solution (liquid detergent works
well).
WARNING: NEVER TEST FOR LEAKS WITH A FLAME!!!
ALL
components/materials
must conform
to National Fuel Gas Code specifications,or in CANADA,
the Canadian Installation Codes. It is important that gas pressure regulators meet applicable pressure
requirements and that gas meters be rated for the total amount of
ALL
the appliance BTU's being
supplied.
Содержание AD-30 (Export)
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