American Dryer Corp MD-170 manual Type of GAS

2.Technical Gas Data a. Gas Specifications

		TYPE OF GAS
	NATURAL		LIQUID PROPANE
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 gas valve is on.

b.Gas Connections:

Inlet connection ---- 1-inch N.P.T.

Inlet supply size ----- 1-inch N.P.T. (minimum)

Btu/hr input (per dryer) ----- 550,000 (138,600 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-inches (14.92 millibars) and a maximum of 12-inches water column (29.9 millibars) 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 water column (26.1 millibars). 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.

					TYPE OF GAS				L.P.
									Conversion
ADC	BTU			Natural			Liquid Propane
		kcal/hr							Kit
MODEL	Per Hour
		Rating	Qty.	D.M.S.*	Part	Qty.	D.M.S.*	Part	Part Number
NUMBER	Rating				Number			Number
MDG-170	550,000	138,600	4	#2	140839	4	#29	140820	880978

Shaded area is stated in metric equivalent

* D.M.S. (Drill Material Size) equivalents are as follows:

Natural Gas	#2	= .2210" (5.6134 mm)
Liquid Propane Gas ..	#29	= .1360" (3.4544 mm)

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