2.Technical Gas Data a. Gas Specifications

 

TYPE OF GAS

 

 

NATURAL

LIQUID PROPANE

 

 

 

 

 

Manifold Pressure*

3.5 inches W.C.

8.7 mb

10.5 inches W.C.

26.1 mb

 

 

 

 

 

In-Line Pressure

6.0 - 12.0 inches W.C.

14.92 - 29.9 mb

11.0 inches W.C.

27.4 mb

 

 

 

 

 

Shaded areas are stated in metric equivalents

*Measured at the gas valve pressure tap when the gas valve is on.

b.Gas Connections

Inlet connection -------- 3/4” N.P.T.

Inlet supply size -------- 3/4” N.P.T. (minimum) Btu/hr input -------------- 204,000 (51,408 kcal/hr)

1)Natural Gas

Regulation is controlled by the dryer’s gas valve’s internal regulator. Incoming supply pressure must be consistent between a minimum of 6.0 inches (14.92 mb) and a maximum of 12.0 inches (29.9 mb) water column (W.C.) pressure.

2)Liquid Propane (L.P.) Gas

Dryers made for use with L.P. gas have the gas valve’s internal pressure regulator blocked open so that the gas pressure must be regulated upstream of the dryer. The pressure measured at each gas valve pressure tap must be a consistent 10.5 inches (26.1 mb) water column. There is no regulator or regulation provided in an L.P. dryer. The water column pressure must be regulated at the source (L.P. tank) or an external regulator must be added to each dryer.

 

 

 

 

TYPE OF GAS

 

Liquid Propane

MODEL

BTU

kcal/hr

 

Natural

 

 

Liquid Propane

Conversion Kit

Per Hour

 

 

 

 

 

 

 

Part Number

NUMBER

Rating

Qty.

D.M.S.*

 

Part

Qty.

D.M.S.*

Part

Rating

 

Number

Number

 

D-78

204,000

51,408

3

#23

 

140856

3

#42

140810

883298

 

 

 

 

 

 

 

 

 

 

 

Shaded area is stated in metric equivalent

*Drill Material Size (D.M.S.) equivalents are as follows: Natural Gas .................. #23 = 0.1540” (3.9116 mm). L.P. Gas ........................ #42 = 0.0935” (2.3749 mm).

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American Dryer Corp D-78 installation manual Type of GAS