American Dryer Corp. Phase 7 Gas/Steam AD-464, Руководство по установке

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20 American Dryer Corp. 113068 - 10
3. Steam Supply and Condensate Return Connections
The steam supply line into the dryer is made into the 2-1/2” F.P.T. pipe fitting located on top of the heat
module console.
The maximum operating steam supply pressure is 150 psig (1,034 kPa).
The presence of condensate in the steam supply line will cause water hammer and subsequent steam coil
(battery) failure. The steam supply connection out of the main supply line
must be made with a minimum
10-inch (25.4 cm) riser. This will reduce the amount of condensate in the steam supply.
Use flexible couplings at the supply and return connections. The dryer vibrates slightly when it runs and the
piping connections may crack if they are hard piped to the dryer. Install shutoff valves in the supply and
return lines.
An inverted bucket steam trap with an internal check valve is included with the dryer. The supply lines
should be insulated. This will save energy and provide for the safety of the operator and maintenance
personnel.
Water pockets in the supply line, caused by low points, will provide wet steam to the coil possibly causing
steam coil damage.
ALL
horizontal runs of steam supply piping
should be
pitched 1/4-inch (6.35 mm) for
the header. Install a bypass trap in any low point to eliminate wet steam.
The condensate return line must be 1-1/4” pipe.