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Piping Connections
All components/materials must conform to National Fuel Gas
Code Specifications ANSI Z223.1-LATEST EDITION, or in
Canada, CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-
B149.2-M91 (L.P. Gas) or LATEST EDITION (for General
Installation and Gas Plumbing), as well as local codes and
ordinances and must be done by a qualified professional. 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 being supplied.
The dryer is provided with one 1/2" N.P.T. inlet pipe connection
extending out the top left corner of the dryer (refer to page 7).
It is recommended that a gas shutoff valve be provided to the
gas supply line of each dryer for ease in servicing.
An 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.
Test all connections for leaks by brushing on a soapy water
solution (liquid detergent works well).
WARNING
!
NEVER TEST FOR LEAKS WITH A FLAME!!!
The size of the main gas supply line (header) will vary
depending on the distance this line travels from the gas meter
or, in the case of L.P. gas, the supply tank, other gas-operated
appliances on the same line, etc. Specific information
regarding supply line size should be determined by the gas
supplier.
NOTE: Undersized gas supply piping can create a low or
inconsistent pressure, which will result in erratic operation
of the burner ignition system.
113540 - 5
Preparation for Operation / Start-Up _
The following items should be checked before attempting to
operate the dryer:
Read all "caution," "warning," and "direction" labels attached
to the dryer.
Check incoming supply voltage to be sure that it is the same
as indicated on the dryer data label.
Gas Models – check to ensure that the dryer is connected to
the type of heat/gas indicated on the dryer data label.
The sail switch damper assembly was installed and adjusted
at the factory prior to shipping. However, each sail switch
adjustment must be checked to ensure that this important
safety control is functioning.
Check bolts, nuts, screws, terminals, and fittings for tightness.
Gas Models – be sure that all gas shutoff valves are in the
open position.
Be sure all back guard panels and service box covers have
been replaced.
Check the lint door to ensure that it is closed and secured in
place.
Rotate the tumbler by hand to be sure it moves freely.
Preoperational Test __________________
All dryers are thoroughly tested and inspected before leaving
the factory. However, a preoperational test should be
performed before the dryer is publicly used. It is possible that
adjustments have changed in transit or due to marginal location
(installation) conditions. Installer must instruct the user on
how to correctly operate the dryer before leaving.
Turn on electric power to the dryer.
Refer to the operating instructions for starting your particular
model dryer.
Gas Dryers
When a gas dryer is first started (during initial start-up), it has
a tendency not to ignite on the first ignition attempt. This is
because the gas supply piping is filled with air, so it may take
a few minutes for the air to be purged from the lines.
NOTE: During the purging period, check to be sure that all
gas shutoff valves are open.
Gas model dryers are equipped with an ignition system,
which has internal diagnostics. If ignition is not established
after one time, the heat circuit in the ignition module will
attempt two more ignitions (total of three ignition attempts).
If there is no flame after the third ignition attempt, the
module will lock out until it is manually reset. To reset the
ignition system, open and close the main door and restart
the dryer.
A burner gas pressure measurement should be taken at the
gas valve outlet pressure tap of each gas valve to ensure that
the water column pressure is correct and consistent.
NOTE: Water column burner pressure requirements
(measured at the outlet pressure tap of the gas valve body):
Natural Gas ........ 3.5 in WC (8.7 mb).
L.P. Gas .............. 10.5 in WC (26.1 mb).
www.adclaundry.com
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