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5. Electrical Connections for Electric Dryers
The electrical input connections for each basket (tumbler) section are made at each oven contactor, located
at the rear of the dryer. The only electrical connections needed are the 3-phase (3ø) leads (L1, L2, and L3)
and ground. Single-phase (1ø) power for the control circuit is done by the factory at the contactors (relay),
and no other wiring connections are necessary.
NOTE: It is recommended that a circuit servicing each basket (tumbler) section be provided.
CAUTION:The dryer must be grounded. Ground lugs have been provided in the rear wiring
boxes for this purpose.
G. GAS INFORMATION
The dryer and its individual shutoff valve must be disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess of 1/2 psig (3.5 kPa).
The dryer must be isolated from the gas supply piping system by closing its individual manual shutoff valve
during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.5
kPa).
1. 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 (Liquid Propane [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.
The dryer must be connected to the type of heat/gas indicated on the dryer data label located on the inside
of the control door. If this information does not agree with the type of gas available, contact the reseller who
sold the dryer or contact the factory.
NOTE: Any burner changes must be made by a qualified technician.
The gas input ratings shown on the dryer data label are for elevations up to 2,000 feet (609.6 meters), unless
elevation requirements of over 2,000 feet (609.6 meters) were specified at the time the dryer order was
placed with the factory. The adjustment for dryers in the field for elevations over 2,000 feet (609.6 meters)
is made by changing each burner orifice. If this adjustment is necessary, contact the reseller who sold the
dryer or contact the factory.