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Type of Gas
Manifold Pressure* In-Line Pressure
Natural
3.5 inches W.C. 6.0-12.0 inches W.C.
8.7 mb 14.92 - 29.9 mb
Liquid
Propane
10.5 inches W.C. 11.0 inches W.C.
26.1 mb 27.4 mb
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TYPE OF GAS
Btu/hr
Rating
kcal/hr
Rating
Natural Liquid Propane
Qty. D.M.S.* Part No. Qty. D.M.S.* Part No.
350,000
88,200
3#7
140862
3#31
140818
Liquid Propane Conversion Kit Part Number 882199
Gas Connections
Inlet connection ................... 1” N.P.T.
Inlet supply size .................. 1” Diameter Pipe (minimum)
Heat input (per dryer) .......... 350,000 Btu/hr (88,200 kcal/hr)
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 in WC (14.92 mb) and a maximum
of 12.0 in WC (29.9 mb) pressure.
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 in WC (26.1 mb). 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.
Important
Failure to isolate or disconnect the dryer from the
supply as noted can cause irreparable damage to
the gas valve, voiding the warranty.
Note
The dryer must be isolated from the gas supply
piping system by closing its individual manual
shutoff valve during any pressure test of the gas supply
system at test pressures equal to or less than 1/2 psig (3.5
kPa).
Warning
Fire or explosion could result due to failure of
isolating or disconnecting the gas supply as noted.
Gas Supply
The gas dryer installation must meet the American National
Standard...National Fuel Gas Code ANSI Z223.1-LATEST
EDITION, or in Canada, the Canadian Installation Codes
CAN/CGA-B149.1 M91 (Natural Gas) or CAN/CGA-B149.2-
M91 (L.P. Gas) or LATEST EDITION, as well as local codes
and ordinances and must be done by a qualified
professional.
Note
Undersized gas piping will result in ignition
problems, slow drying, increased use of energy,
and can create a safety hazard.
Any burner changes or conversions must be made by a
qualified professional.
The dryer must be connected to the type of heat/gas indicated
on the data label. If this information does not agree with the
type of gas available, do not operate the dryer. Contact the
reseller who sold the dryer or contact the manufacturer.
The input ratings shown on the data label are for elevations
up to 2,000 feet (610 meters), unless elevation requirements
of over 2,000 feet (610 meters) were specified at the time the
dryer order was placed with the factory. The adjustment or
conversion of dryers in the field for elevations over 2,000 feet
(610 meters) is made by changing each burner orifice. If this
conversion is necessary, contact the reseller who sold the
dryer or contact the manufacturer.
Important
This gas dryer is not provided with an internal gas
supply shutoff and an external gas supply shutoff
must be provided.
Technical Gas Data
Gas Specifications
Shaded areas are stated in metric equivalents
* Measured at outlet side of gas valve pressure tap when gas valve is on.
Shaded area is stated in metric equivalent
* D.M.S. equivalents are as follows:
Natural Gas ...............#7 = 0.2010” (5.1054 mm).
L.P. Gas .....................#31 = 0.1200” (3.048 mm).
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 Btu being supplied.
The dryer is provided with a 1” N.P.T. inlet pipe connection
located at the upper right rear of the dryer. The minimum
pipe size (supply line) to the dryer is 1-inch diameter. For
ease in servicing, the gas supply line of each dryer must
have its own shutoff valve.
The size of the main gas supply line (header) will vary
depending on the distance this line travels from the gas meter
or, in the case of L.P. gas, the supply tank, other gas-operated
appliances on the same line, etc. Specific information
regarding supply line size should be determined by the gas
supplier.
Note
Undersized gas supply piping can create a low or
inconsistent pressure, which will result in erratic
operation of the burner ignition system.