Alliance Laundry Systems LES33A User Manual

Page of 52
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504607
Gas Requirements . . .
(Gas Dryers)
NOTE: The gas service to a gas dryer 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 2,500 feet (760 
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
 (93.1 MJ/m
3
service must be supplied at 10 ± 1.5 inch water column 
pressure.
NOTE:  DO NOT connect the dryer to L.P. 
(Propane) Gas Service without converting the gas 
valve. An LPK1 Sales Accessory (L.P. [Propane] 
Gas Conversion Kit 649P3) must be installed.)
NOTE:   The dryer and its appliance main gas 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). (See 
illustration on page 10.)
The dryer must be isolated from the gas supply piping 
system by closing the equipment 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
Number
ft
m
#
Inches
mm
3000
915
43
0.0890
2.26
503778
6000
1830
44
0.0860
2.18
58719
8000
2440
45
0.0820
2.08
503779
9000
2740
46
0.0810
2.06
503780
10000
3050
47
0.0785
1.99
503781
To reduce the risk of gas leaks, fire or 
explosion:
• The dryer 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. 
Before tightening the connection, purge 
remaining air from gas line to dryer 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.
W114R1
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