American Dryer Corp AD-310 Phase 7 installation 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
In-Line 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

Run a 1-1/2” pipe from the main gas header to the dryer. There are two (2) 1-1/4” gas pipe connections at the top of the dryer. The dryer has two (2) gas burner boxes and each one (1) has its own 1-1/4” gas connection.

Inlet connection ----------- two (2) 1-1/4” N.P.T. Inlet Supply Size ----------- 1-1/2” N.P.T. (minimum) BTU/hr input (per dryer) - 1,125,000 (283,500 kcal/hr)

1)Natural Gas

Pressure regulation is controlled by both gas valve’s internal regulators. Incoming supply pressure must be consistently between a minimum of 6.0 inches (14.92 mb) water column (W.C.) and a maximum of 12.0 inches (29.9 mb) water column.

2)Liquid Propane (L.P.) Gas

Dryers made for use with L.P. gas have both of their gas valves internal pressure regulators blocked open so that the gas pressure must be regulated upstream of the dryer. The pressure is 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. gas dryer. The water column must be regulated at the source (L.P. tank) or external regulator/regulation must be added to each dryer.

30