American Dryer Corp. AD-758DV - Manual (Page 27)

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Shaded areas are stated in metric equivalents
* Measured at outlet side of gas valve pressure tap when 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 (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.
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
2. Technical Gas Data
a. Gas Specifications
TYPE OF GAS
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
Liquid Propane Conversion Kit Part Number 883299
* 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).