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2. Technical Gas Data
a. Gas Specifications
* Measured at gas valve pressure tap when the gas valve is on.
b. Natural Gas
Regulation is controlled by each 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.
c. 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 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.
3. Piping Connections
ALL components/materials must conform to National Fuel Gas Code Specifications ANSI Z223.1-LATEST
EDITION, or in Canada, CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (L.P. Gas)
or LATEST EDITION (for General Installation and Gas Plumbing), as well as local codes and ordinances
and must be done by a qualified professional. It is important that gas pressure regulators meet applicable
pressure requirements, and that gas meters be rated for the total amount of ALL the appliance Btus being
supplied.
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
11.0 inches W.C.
27.4 mb
Shaded areas are stated in metric equivalents
GAS INLET SIZE (EACH BASKET/TUMBLER) 3/4” N.P.T.
INPUT (EACH BASKET/TUMBLER) 90,000 BTU/HR
22,680 kcal/hr
INPUT (TOTAL FOR BOTH BASKETS/TUMBLERS) 180,000 BTU/HR
45,360 kcal/hr
N.P.T. = National Pipe Thread