Whirlpool WGD4870BW - Manuel (Page 8)

8
Gas supply line
■ 1/2" NPT pipe is recommended.
■ 3/8" approved tubing is acceptable for lengths under
20 ft. (6.1 m) if local codes and gas supplier permit.
■ Must include 1/8" NPT minimum plugged tapping accessible
for test gauge connection, immediately upstream of the gas
connection to the dryer (see illustration).
■ Must include a shut-off valve:
In the U.S.A.:
An individual manual shut-off valve must be installed within
six (6) feet (1.8 m) of the dryer in accordance with the
National Fuel Gas Code, ANSI Z223.1.
In Canada:
An individual manual shut-off valve must be installed in
accordance with the B149.1, Natural Gas and Propane
Installation Code. It is recommended that an individual
manual shut-off valve be installed within six (6) feet (1.8 m)
of the dryer.
The shut-off valve location should be easy to reach for opening
and closing.
A
B
E
D
C
A. 3/8" flexible gas connector
B. 3/8" pipe to flare adapter fitting
C. 1/8" NPT minimum plugged tapping
D. 1/2" NPT gas supply line
E. Gas shut-off valve
Gas supply connection requirements
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.
This dryer must be connected to the gas supply line with
a listed flexible gas connector that complies with the standard
for connectors for gas appliances, ANSI Z21.24 or CSA 6.10.
Option 1 (Recommended Method)
Flexible stainless steel gas connector:
■ If local codes permit, use a new flexible stainless steel gas
connector (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" flare x 3/8" NPT adapter
fitting between the stainless steel gas connector and the
dryer gas pipe, as needed to prevent kinking.
Option 2 (Alternate Method)
Approved aluminum or copper tubing:
■ Lengths over 20 ft. (6.1 m) can use 3/8" approved tubing
(if codes and gas supplier permit).
■ If you are using Natural Gas, do not use copper tubing.
■ 3/8" flare x 3/8" NPT adapter fitting between dryer pipe
and 3/8" 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 LP gas, 3/8" LP
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 LP
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" male pipe thread.
29" Wide Model
A
1¼"
(32 mm)
9¼"
(235 mm)
A. 3/8" NPT dryer pipe
27" Wide Model
A
A. 3/8" NPT dryer pipe
*5 3 / 4 "
(146 mm)
1 1 / 2 "
(38 mm)
A. 3/8" NPT dryer pipe
burner input requirements
Elevations up to 10,000 ft. (3,048 m):
■ The design of this dryer is certified by CSA International for
use at altitudes up to 10,000 ft. (3,048 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 ft. (3,048 m):
■ When installed above 10,000 ft. (3,048 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 pressure testing at pressures greater than
1/2 psi.
†®TEFLON is a registered trademark of E.I. Du Pont De Nemours and Company.