American Dryer Corp. AD-27 - Manual (Page 26)

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2. Technical Gas Data
a. Gas Specifications
b. Gas Connections:
Inlet connection --- 1/2-inch N.P.T.
Inlet supply size --- 1/2-inch N.P.T. (minimum)
Btu/hr input -------- 78,000 (19,657 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 a 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 ................ #32 = 0.1160” (2.9464 mm).
Liquid Propane Gas ... #50 = 0.0700” (1.778 mm).
T
YPE OF
G
AS
Liquid Propane
(L.P.)
Conversion
Kit
Part Number
ADC
MODEL
NUMBER
BTU
Per Hour
Rating
kcal/hr
Rating
Natural Liquid Propane (L.P.)
Qty. D.M.S.*
Part
Number
Qty. D.M.S.*
Part
Number
ADG-27D 78,000
19,657
2 #32 140851 2 #50 140802 881134
Shaded area is stated in metric equivalent
T
YPE OF
G
AS
Natural Liquid Propane (L.P.)
Manifold Pressure* 3.5 inches W.C.
8.7 mb
10.5 inches W.C.
26.1 mb
Inline Pressure 6.0 - 12.0 inches W.C.
14.92 - 29.9 mb
10.5 inches W.C.
26.1 mb
Shaded areas are stated in metric equivalents
* Measured at outlet side of gas valve pressure tap when the gas valve is on.