INSTALLING STEAM SOLENOID VALVE AND MAKING STEAM INLET CONNECTIONS

High pressure machines require a (constant) 80 to 100 psig (pounds per square inch gauge) (5.62 to 7.03 kg/sq. cm) steam service for optimum operation. Low pressure machines require a (constant) 10 to 15 psig (pounds per square inch gauge) (.70 to 1.05 kg/sq. cm) steam service for optimum operation. The following steps outline the procedure for installing the steam solenoid valve and connecting the steam service.

a.Install a manual shut-off gate valve in the condensate return line after the steam trap for each coil.

b.Connect the steam solenoid valve to the related steam coil inlet connection with nipples, flex hoses, unions, and tee. Refer to Figure 9.

c.Install a gate shut-off valve in the steam supply line. Connect the shut-off gate valve outlet to the solenoid steam valve inlet connection. Refer to Figure 9.

WARNING

The flexible steam hoses connecting the solenoid steam valve to the coil inlets must have a 125 psig (pounds per square inch gauge) (8.79 kg/sq. cm) working pressure. A shut-off valve must be installed upstream from the solenoid steam valve. This way, steam can be shut off for maintenance purposes, or in the event the hose ruptures.

The steam solenoid valve must be supported so minimum load is exerted on the steam coil inlet connections.

W065

INSTALLING STEAM TRAP AND MAKING CONDENSATE RETURN CONNECTIONS

The steam trap must be installed and the coil outlet connections must be connected to the condensate return lines. The following steps outline the procedure for installing the steam trap and connecting the condensate return lines. Refer to Figure 9.

a.Connect a flexible hose to each steam coil outlet.

b.Install a strainer to the ends of each flexible hose.

c.Install a steam trap to each strainer.

IMPORTANT: Steam trap must be installed a minimum of 10 inches (25.4 cm) below the steam coil outlet connections.

d.Install a gate shut-off valve to each steam trap.

e.Connect to the condensate return lines.

WARNING

The flexible steam hoses connecting the coil outlet connections and steam traps must have a minimum of 125 psig (pounds per square inch gauge) (8.79 kg/sq. cm.) working pressure. A shut-off valve must be installed downstream from each steam trap so the condensate return line can be isolated in event a steam trap requires maintenance.

Each steam trap must be supported so minimum load is exerted on the coil outlet connection.

W066

M414545

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