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20 American Dryer Corp. 113226-6
TYPE OF GAS
Liquid
Propane
Conversion Kit
Part Number
Btu/hr
Rating
kcal/hr
Rating
Natural Liquid Propane
Qty. D.M.S.* Part No. Qty. D.M.S.* Part No.
175,000
44,100
4 #30 140819 4 #49 140803 883186
TYP E 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
2. Technical Gas Data
a. Gas Specifications
Shaded areas are stated in metric equivalents
* Measured at 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” Diameter Pipe (minimum)
Btu/hr input (per dryer)---------- 175,000 (44,100 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.
Shaded area is stated in metric equivalent
* Drill Measurement Size (D.M.S.) equivalents are as follows:
Natural Gas............................. #30 = 0.1285” (3.2639 mm).
Liquid Propane Gas ................ #49 = 0.0730” (1.8542 mm).
3. Piping Connections
ALL components/materials must conform to National Fuel Gas Code Specifications ANSI Z223.1-LATEST
EDITION, or in Canada, CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (Liquid
Propane [L.P.] Gas) or LATEST EDITION (for General Installation and Gas Plumbing), as well as local
codes and ordinances and must be done by a qualified professional. It is important that gas pressure
regulators meet applicable pressure requirements, and that gas meters be rated for the total amount of
ALL the appliance Btu being supplied.