FROM PROCESS

2-5 Overhead Process Considerations

If your application has chilled water or process piping above the reservoir fill and vent level, install a standpipe to a point 1’ (30 cm) above the highest point in the system.

In applications where the process or its piping is 15 feet (4.6 m) or more above the reservoir, you must take steps to prevent over-pressurization of the reservoir. This condition can occur on system shutdown when the water in the system drains into the reservoir.

To prevent this, install a check valve in the unit breaker at the high point of the return

more information.

TO PROCESS line and a vacuum line. See Figure 7 below for

Note: The reserve capacity of the reservoir can hold a volume equal to 20 feet (6.1 m)

of 1-inch (2.5 cm) pipe.

Figure 7: Overhead Piping

The reservoir vent & fill line

Vent

 

Vacuum Breaker

to be piped 12" above the highest

 

 

 

Assembly

point of the system. The vent line

 

 

 

Cap

must remain open to the atmosphere.

12"

Check

 

 

 

 

 

 

 

1/8"

 

 

 

Valve

 

 

 

 

Hole

 

 

1/4"

 

 

 

 

 

 

6" Min.

 

 

 

 

Process Return

 

 

Strainer

 

Process Supply

Add check valve if system piping extends 15 feet above reservoir.

IndicatesendendofofAECSterlpiping

piping

SMC Series Chillers

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Sterling Power Products 30F to 65F installation manual Overhead Process Considerations, inch 2.5 cm pipe
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30F to 65F specifications

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