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6 process water considerations, 7 making process water connections, 8 making cooling water connections – Sterlco SEU Series Economical Water TCU User Manual

Page 19

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WTR1-600

Chapter 3: Installation

19 of 42

3-6 Process Water Considerations

Raw Water
Water treatment is vital in any piping system. In some cases, raw water may be used in the system
without problems; in other cases, it can result in large deposits of scale and corrosion.

The ACS Group offers a complete line of water treatment equipment. Contact your sales
representative for water testing and treatment options.

Distilled Water
Non-ferrous (brass, copper, or high-temperature plastic) piping is recommended for distilled
water processes.

Deionized Water
Stainless steel (316 SS minimum) or PVC plastic components must be used with deionized water.
We recommends stainless steel because of the temperature constraints with plastic.

3-7 Making Process Water Connections

Direct Injection
On the back of each unit, the connections are labeled appropriately. For Direct Injection units
connect the TO PROCESS hookup to the entrance of the process and the FROM PROCESS
hookup to the exit of the process. Connect the COOLING WATER
IN
to your plant water supply. Connect the COOLING WATER OUT line to an open drain, or to
the return line of your central water system.

Make sure you carefully select the connecting lines and connectors between the temperature
control unit and the process to suit the needs and requirements of your application.

If your unit has a maximum operating temperature of 250ºF (121ºC), the connecting lines and
connectors should have a service rating of at least 250ºF (121ºC) and 150 psig (1,034.25
kPa/10.34 bars). If it has a maximum temperature of 300ºF (149ºC), the lines and connectors
should have a service rating of at least 300ºF (149ºC) and 150 psig (1,034.25 kPa/10.34 bars).

TO PROCESS — 1½” NPT
This is the outlet for the tempered water leading to the process being controlled.

FROM PROCESS — 1½” NPT
Water from the process re-enters the Economical Series system to be tempered and re-circulated
back into the process.

3-8 Making Cooling Water Connections

Water In — ¾”
The cooling water supply inlet from a cooling tower, a chiller, or a city water supply.