Type of gas – American Dryer Corp. MDG-120PVV User Manual
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2. Technical Gas Data
a. Gas Specifications
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 -------------- 1” N.P.T.
Inlet supply size -------------- 1” Diameter Pipe (minimum)
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.
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TYPE OF GAS
Liquid
Propane
Conversion Kit
Part Number
Model
Btu/hr
Rating
kcal/hr
Rating
Natural
Liquid Propane
Qty.
D.M.S.
*
Part No. Qty.
D.M.S.
*
Part No.
MDG-120
375,000
94,500
3
#4
140832
3
#30
140819
880886
MDG-170
550,000
138,598
4
#2
140839
4
#29
140820
880978
Shaded areas are stated in metric equivalents
* Drill Measurement Size (D.M.S.) equivalents are as follows:
Natural Gas ......................... #4
= 0.2090” (5.3086 mm).
Liquid Propane Gas ............. #30 = 0.1285” (3.2639 mm).
Natural Gas ......................... #2
= 0.2210” (5.6134 mm).
Liquid Propane Gas ............. #29 = 0.1360” (3.4544 mm).