American Dryer Corp. ADG-78 II User Manual

2. Technical Gas Data

a. Gas Specifications

b. Gas Connections:

    Inlet connection ---------- 3/4-inch N.P.T.
    Inlet supply size ---------- 3/4-inch N.P.T. (minimum)

    Btu/hr input (per dryer) - 204,000

    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 and a maximum of 12.0 inches 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 water column (W.C.). 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.

Natural

Liquid Propane

Manifold Pressure*

3.5 inches W.C.

10.5 inches W.C.

Inline Pressure

6.0 - 12.0 inches W.C.

10.5 inches W.C.

*  Measured at gas valve pressure tap when the gas valve in on.

L.P.

Conversion Kit

Part Number

MODEL

NUMBER

BTU

Per Hour

Rating

Natural

Liquid Propane

Qty. D.M.S.*

Part

Number

Qty. D.M.S.*

Part

Number

ADG-78 II

204,000

4

#29

140820

4

#47

1408

05

881655

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

Natural Gas ............... #29 = .1360"

Liquid Propane Gas .. #47 = .0785"