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 TO PROCESS line and a vacuum breaker at the high point of the return FROM PROCESS line. See Figure 4 below for more information.

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 4

Overhead Piping

The reservoir vent & fill line

Vent

to be piped 12" above the highest

 

 

point of the system. The vent line

 

 

must remain open to the atmosphere.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vacuum Breaker

 

 

Assembly

 

 

Cap

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.

Indicates end of Application Engineering piping

Page 14

PS QuarterHorse Series Chillers

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Image 14
HP QuarterHorse 0.25 Portable Chiller PS-025 manual Overhead Process Considerations, Overhead Piping
Page 13 Page 15

QuarterHorse 0.25 Portable Chiller PS-025 specifications

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