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2.
Technical Gas Data
a. Gas Specifications
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 dryers gas valves 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 valves 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.
* Drill Material 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).
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 outlet side of gas valve pressure tap when gas valve is on.
TYP E OF GAS
L.P.
Conversion Kit
Part Number
ADC
MODEL
NUMBER
BTU
Per Hour
Rating
kcal/hr
Rating
Natural Liquid Propane
Qty. D.M.S.*
Part
Number
Qty. D.M.S.*
Part
Number
AD-758DV 175,000 44,100 4 #30 140819 4 #49 140803 882230
Shaded area is stated in metric equivalent