25
2.
Technical Gas Data
a. Gas Specifications
* 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.
* 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).
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
TYPE OF GAS
Liquid Propane
Conversion Kit
Part Number
MODEL
NUMBER
BTU
Per Hour
Rating
kcal/hr
Rating
Natural Liquid Propane
Qty. D.M.S.*
Part
Number
Qty. D.M.S.*
Part
Number
D-78 204,000
51,408 3 #23 140856 3 #42 140810 883298
Shaded area is stated in metric equivalent
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