American Dryer Corp. D3030 User Manual

2. Technical Gas Data

a. Gas Specifications

*  Measured at gas valve pressure tap when the 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) --- 78,000 Btu/hr (19,656 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 (19.92 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 (26.2 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 .............................. #31 = 0.1200” (3.048 mm).
Liquid Propane Gas .................. #51 = 0.0670” (1.701 mm).

NATURAL

LIQUID PROPANE

  Manifold Pressure*

3.5 inches W.C.

10.5 inches W.C.

  In-Line Pressure

6.0 - 12.0 inches W.C.

11.0 inches W.C.

Liquid

Propane

Conversion Kit

Part Number

Btu/hr

Rating

Natural

Liquid Propane

Qty.

D.M.S.*

Part No.

Qty.

D.M.S.*

Part No.

78,000

2

#31

140818

2

#51

140801

883297