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12 Maytag Co. 113489-5 (W10185535)
Natural Gas Specifications**
Nominal
Heating
Value
Supply
Pressure
Gross
Heat Input
Orifice
Size*
Orifice
(Injector)
Quantity
Burner
Pressure
Btu/ft
3
in wc Btu/hr kW DMS mm in wc
1,000 6.0-12.0 224,000 65.64 5 5.2197 2 3.5
The input ratings shown on the data label are for elevations
up to 2,000 feet (610 meters), unless elevation requirements
of over 2,000 feet (610 meters) were specified at the time the
dryer order was placed with the factory. The adjustment or
conversion of dryers in the field for elevations over 2,000 feet
(610 meters) is made by changing each burner orifice. If this
conversion is necessary, contact the distributor who sold the
dryer or contact the manufacturer.
IMPORTANT: If connection to this dryer is made with a
flexible hose, it must be suitable for the appliance category
in accordance with national installation regulations of the
country of destination, and if in doubt the installer must
contact the supplier. The manufacturer of this dryer does
not recommend the use of flexible gas supply line/hose.
Pipe joint compounds that resist the action of natural,
propane, and butane gases must be used.
In the U.S.A.: An individual manual shutoff valve must be
installed within 6 feet (1.8 meters) of the dryer in accordance
with the National Fuel Gas Code, ANSI Z223.1.
In Canada: An individual manual shutoff valve must be
installed in accordance with the B149.1, Natural Gas and
Propane Installation Code. It is recommended that an
individual manual shutoff valve be installed within 6 feet (1.8
meters) of the dryer.
* Consult factory for elevations over 2,000 feet (609.6 meters) for correct
burner orifice size(s).
** Btu rating for both tumblers.
Gas Connections
Inlet connection .....3/4” M.N.P.T.
Inlet supply size ....3/4” Pipe (minimum)
Piping/Connections
The dryer is provided with a 3/4” N.P.T. inlet pipe connection
on top of the dryer. 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. 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.
IMPORTANT: Pipe joint compounds that resist the action of
natural, propane, and butane gases must be used.
Test all connections for leaks by brushing on a soapy water
solution (liquid detergent works well).
Preparation for Operation/Start-Up ___
The following items should be checked before attempting to
operate the dryer:
• Read all “WARNING” and “DIRECTION” labels attached
to the dryer.
• Check incoming supply voltage to be sure that it is the
same as indicated on the data label.
• Be sure that all gas shutoff valves are in the open
position.
• Be sure all back panels (guards) and electric box covers
are in place.
• Be sure the service doors are closed and securely in
place.
• Be sure the lint door/drawer is securely in place.
• Rotate the tumbler (drum) by hand to be sure it moves
freely.
• Check bolts, nuts, screws, terminals, and fittings for
tightness and security.
• Check that the vent is connected to the dryer and is
exhausted to the outdoors.