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2. Technical Gas Data
a. Gas Specifications
* Measured at outlet side of gas valve pressure tap when gas valve is on.
b. Gas Connections
Inlet connection ------------- 1/2” N.P.T.
Inlet supply size ------------- 1/2” N.P.T. (minimum)
Heat input (per dryer) ------150,000 Btu/hr (37,800 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 pressure must be regulated at the source
(L.P. tank) or an external regulator must be added to each dryer.
* Drill Measurement Size (D.M.S.) equivalents are as follows:
Natural Gas ...................... #29 = 0.1360” (3.4540 mm).
Liquid Propane Gas ......... #46 = 0.810” (2.0574 mm).
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
Liquid
Propane
Conversion Kit
Part Number
MODEL
NUMBER
Btu/hour
Rating
kcal/hr
Rating
Natural Liquid Propane
Qty. D.M.S.* Part No. Qty. D.M.S.* Part No.
MDG50V 150,000
37,800
3 #29 140820 3 #46 140806 883325
Shaded area is stated in metric equivalent