14
American Dryer Corp.
112809 - 6
!
Piping / Connections
The dryer is provided with two 1/2” N.P.T. (3/8” B.S.P.T. for CE
and Australian dryers) inlet pipe connections (1 for each
tumbler) at the rear of the dryer. If a separate feed is provided
for each tumbler from the main supply line (header), then a
1/2” (12.7 mm) line connection is sufficient. However, if the
top and bottom tumbler connections are connected together,
the supply from the header must be increased to 3/4-inch
(19.05 mm). There should be a minimum 6-inch (15.24 cm)
clearance between the back guard and the first bend in the
gas piping for ease of servicing. It is recommended that a
gas shutoff valve be provided to the gas supply line of each
dryer for ease in servicing.
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.
TYPICAL NATURAL GAS INSTALLATION
Consistent gas pressure is essential at all gas connections.
It is recommended that a 3/4-inch (19.05 mm) pipe gas loop
be installed in the supply line servicing a bank of dryers. An
in-line pressure regulator must be installed in the gas supply
line (header) if the (natural) gas pressure exceeds 13.0 in
WC (32.34 mb) pressure.
A plugged tap, accessible for a pressure gauge connection,
must be installed in the main gas supply line immediately
upstream of the dryers.
TYPICAL L.P. GAS INSTALLATION
!
IMPORTANT:
Pipe joint compounds that resist the action of
natural, L.P., and butane gases 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!!!
Converting from One Family
of Gas to Another ______________________
Warning (CE Dryers)
This appliance must only be operated with the
gas type indicated on the dryer’s data plate. If
the appliance is converted (gas type changed), a data
plate amendment must be obtained from American Dryer
Corporation (dryer’s serial number is required to
purchase a conversion kit).
IMPORTANT:
Any burner changes or conversions must be
made by a qualified professional.
The dryers manufactured for Belgium, Luxemburg, Greece,
Estonia, Slovak Republic, Iceland, Malta, Poland and
Cyprus cannot be converted from one family of gas to
another.
Conversion from Natural Gas
to Propane or Butane Gas
The following conversion allows the dryer to be operated with
either propane, butane, or LPG. The use of gas valve kit
(ADC P/N 140414) disables the internal regulator of the gas
valve. Therefore, the gas supply is ungoverned and an
external regulator must be provided at the source of the
supply (example L.P. tank) or the gas supply line to the dryer.
The L.P. kit supplied will depend on the country the dryer is
installed in.
Parts Required for Conversion:
Description
ADC P/N
Qty
Unregulated Gas Conversion Kit***
140414
2*
OR
Regulated L.P. Gas Conversion Kit****
140416
2*
Burner Orifice (Injector)
**
2*
L.P. Conversion Label
114515
2*
*
This includes one for each pocket/tumbler.
**
13 for orifice (injector) size.
*** Required for unregulated propane or butane only.
**** Required for regulated LPG or propane only.
Instructions
Disconnect electrical power to the dryer.
Close all shutoff valves (for both top and bottom tumbler) in
dryer’s gas supply line.
IMPORTANT:
The following procedures must be performed
on both top and bottom tumblers.
Open the panels located just below each loading door.
Locate the gas train and disconnect the union, three electrical
plugs, and the gas train mounting screws from the burner.
Carefully slide the gas train out of the gas train enclosure.
(The carbon ignitor located at the far end of the gas train is
very fragile.)
Summary of Contents for ES30/30
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