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7
Gas Supply Requirements
Gas Type
Natural Gas:
This dryer is equipped for use with NATURAL GAS. It is design-
certified by CSA International for L.P. (propane or butane) gases
with appropriate conversion.
■ Your dryer must have the correct burner for the type of gas in
your home. Burner information is located on the rating plate
in the door well of your dryer. If this information does not
agree with the type of gas available, contact your local Sears
store or Sears Service Center.
L.P. gas conversion:
No attempt shall be made to convert the appliance from the gas
specified on the model/serial rating plate for use with a different
gas without consulting the serving gas supplier.
Conversion must be made by a qualified technician.
See gas valve burner base for gas conversion kit part number.
Gas Supply Line Must Have:
■
¹⁄₈
in. NPT plugged tapping, immediately upstream of the gas
connection (see illustration)
■ Shutoff valve:
Required
to be within 6 ft (183 cm) of appliance. The location
should be easy to reach for opening and closing.
1.
³⁄₈
in. flexible gas connector
2.
³⁄₈
in. pipe to flare adapter fitting
3.
¹⁄₈
in. NPT plugged tapping
4. ½ in. NPT gas supply line
5. Gas shut-off valve
There are many methods by which your gas dryer can be
connected to the gas supply. Listed here are some guidelines
for two different methods of connection.
Option 1 (Recommended Method): Rigid
gas supply line:
■
¹⁄₂ in. IPS pipe used with a combination of pipe fittings.
■ Optional connection to dryer:
If local codes permit, use flexible stainless steel tubing
(Design Certified by the American Gas Association or CSA
International) to connect your dryer to the rigid gas supply
line. Use an elbow and a ³⁄₈ in. flare x ³⁄₈ in. NPT adapter fitting
between the stainless steel tubing and the dryer gas pipe, as
needed to prevent kinking.
Option 2 (Alternate Method): Tubing
gas supply line:
■ Lengths under 20 ft (6.1 m) can use ³⁄₈ in. approved tubing (if
codes and gas supplier permit).
■ If you are using natural gas, do not use copper tubing.
■
³⁄₈ in. flare x ³⁄₈ in. NPT adapter fitting between dryer pipe and
³⁄₈ in. approved tubing
■ Lengths over 20 ft (6.1 m) should use larger tubing and a
different size adapter fitting.
■ If your dryer has been converted to use L.P. gas,
³⁄₈
in. L.P.
compatible copper tubing can be used. If the total length of
the supply line is more than 20 ft (6.1 m), use larger pipe.
NOTE:
Pipe joint compounds that resist the action of L.P. gas
must be used. Do not use TEFLON
®
tape.
Dryer Gas Pipe
■ The gas pipe that comes out through the rear of your dryer
has a
³⁄₈
in. male pipe thread.
1. ½ in. NPT gas supply line
2.
³⁄₈
in. NPT dryer pipe
Burner Input Requirements:
Elevations up to 10,000 feet:
■ The design of this dryer is certified by CSA International for
use at altitudes up to 10,000 ft (3,000 m) above sea level at
the B.T.U. rating indicated on the model/serial number plate.
Burner input adjustments are not required when the dryer is
operated up to this elevation.
Elevations above 10,000 feet:
■ When installed above 10,000 ft (3,000 m) a 4% reduction of
the burner B.T.U. rating shown on the model/serial number
plate is required for each 1,000 ft (305 m) increase in
elevation.
Gas Supply Pressure Testing
■ The dryer must be disconnected from the gas supply piping
system during any pressure testing of that system at test
pressures in excess of ¹⁄₂ psi.
■ The dryer must be isolated from the gas supply piping system
by closing the supply line shutoff valve during any pressure
testing of the gas supply piping system at test pressures
equal to or less than ¹⁄₂ psi.
Explosion Hazard
Use a new AGA or CSA approved gas supply line.
Install a shut-off valve.
Securely tighten all gas connections.
If connected to LP, have a qualified person make
sure gas pressure does not exceed 13" (33 cm)
water column.
Examples of a qualified person include:
licensed heating personnel,
Failure to do so can result in death, explosion,
or fire.
authorized gas company personnel, and
authorized service personnel.
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