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/ft3 (37.3 MJ/m3), 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. Refer to Table 1.

L.P. (Liquefied Petroleum) Gas, 2,500 Btu/ft3

(97.1 MJ/m3), service must be supplied at 10 ± 1.5 inch water column pressure.

NOTE: DO NOT connect the dryer unit to L.P. Gas Service without converting the gas valve. A 458P3 L.P. 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).

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. Refer to Figure 20.

Installation

WARNING

To reduce the risk of gas leaks, fire or explosion:

•Each 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 L.P. (Liquefied Petroleum) Gas, or Teflon tape, on all pipe threads.

•Purge air and sediment from gas supply line before connecting it to a dryer. Before tightening the connection, purge remaining air from gas line to each 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.

•Any disassembly requiring the use of tools must be performed by a suitably qualified service person.

 

 

 

 

 

 

 

W315

 

 

 

 

 

 

 

 

 

 

 

Natural Gas Altitude Adjustments

 

 

 

 

 

 

 

Altitude

 

Orifice Size

 

Part

feet

m

#

 

inches

 

mm

Number

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

Table 1

510975

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