26 American Dryer Corp. 112144-46
2. Technical Gas Data
a. Gas Specifications
ADG-320D
Gas Inlet Size (each basket/tumbler) 1/2” N.P.T.
Btu/hr Input (each basket/tumbler) 60,000 15,120 kcal/hr
Btu/hr Input (total for both baskets/tumblers) 120,000 30,240 kcal/hr
N.P.T. = National Pipe Thread
ADG-330D
Gas Inlet Size (each basket/tumbler) 1/2” N.P.T.
Btu/hr Input (each basket/tumbler) 68,000 17,136 kcal/hr
Btu/hr Input (total for both baskets/tumblers) 136,000 34,272 kcal/hr
N.P.T. = National Pipe Thread
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
b. Natural Gas
Regulation is controlled by each 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.
c. 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.
* Measured at gas valve pressure tap when gas valve is on.
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