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504524
23
Gas Requirements . . .
(Gas Dryers)
NOTE: The gas service to a gas dryer unit must
conform with the local codes and ordinances, or in the
absence of local codes and ordinances, with the latest
edition of the National Fuel Gas Code ANSI Z223.1/
NFPA 54 or the CAN/CGA-B149, National Gas
Installation Code.
Natural Gas, 1,000 Btu/ft
3
(37.3 MJ/m
3
), service must
be supplied at 6.5 ± 1.5 inch water column pressure.
For proper operation at altitudes above 2,000 feet (610 m)
the natural gas valve spud orifice size must be reduced to
ensure complete combustion. See table at right.
L.P. (propane) Gas, 2,500 Btu/ft
3
(97.1 MJ/m
3
), service
must be supplied at 10 ± 1.5 inch water column pressure.
NOTE: DO NOT connect the dryer unit to L.P.
(propane) Gas Service without converting the gas
valve. A 458P3 L.P. (propane) Gas Conversion Kit
must be installed by the Manufacturer’s Authorized
Dealers, Distributors, or local service personnel.
NOTE: The dryer unit and its individual shut-off
valve 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 (3.45 kPa).
The dryer unit must be isolated from the gas supply
piping system by closing its individual manual shut-off
valve during any pressure testing of the gas supply piping
system at test pressures equal to or less than
1/2 psi (3.45 kPa)
NOTE: When connecting to a gas line, an equipment
shutoff valve must be installed within 6' (1.8 m) of the
dryer. An 1/8" N.P.T. pipe plug must be installed as
shown. See illustration.
Altitude Orifice Size Part
Numberft m # Inches mm
2000 610 41 0.0960 2.44 503776
3000 915 42 0.0935 2.37 503777
5500 1680 43 0.0890 2.26 503778
7000 2135 44 0.0860 2.18 58719
9000 2745 45 0.0820 2.08 503779
10500 3200 46 0.0810 2.06 503780
To reduce the risk of gas leaks, fire or
explosion:
• The dryer unit must be connected to the
type of gas as shown on nameplate located
in the door recess.
• Use a new flexible stainless steel
connector.
• Use pipe joint compound insoluble in LP
(propane) Gas, or Teflon tape, on all pipe
threads.
• Purge air and sediment from gas supply
line before connecting it to the dryer unit.
Before tightening the connection, purge
remaining air from gas line to dryer unit
until odor of gas is detected. This step is
required to prevent gas valve
contamination.
• Do not use an open flame to check for gas
leaks. Use a non-corrosive leak detection
fluid.
W154R2
WARNING
D233IE2E
3/8" NPT
GAS CONNECTION
1/8" NPT
PIPE PLUG
(For checking
inlet gas pressure)
NEW
STAINLESS
STEEL
FLEXIBLE
CONNECTOR
USE ONLY
IF ALLOWED
BY LOCAL
CODES
(Use
Design A.G.A.
Certified
Connector)
EQUIPMENT
SHUT-OFF
VALVE
Installed within
6' (1.8 m) of dryer
BLACK IRON PIPE
Shorter than 20' (6.1 m) - use 3/8" pipe
Longer than 20' (6.1 m) - use 1/2" pipe