AEC TCU Series Open Reservoir Water Temperature Control Units - Manual (Page 22)

Open Resevoir Water Temperature Control Units Page 23
Pipe sizes for ¾ hp to 10 hp (0.56 kW to 7.46 kW) units
Location Size in inches NPT
Process delivery 1½”
Process return 1½”
Water supply ¾”
Drain - depends on solenoid used -
Common black pipe is recommended for permanent installations. TCU Series water circuit
piping is primarily ferrous (iron) and reacts electro-chemically with non-ferrous metallic
materials such as copper. Some water contains dissolved minerals that greatly accelerates the
reaction between dissimilar metals.
Ferrous piping is recommended to minimize galvanic action. If piping must be copper, use
dielectric unions at the unit.
3-5 Piping Considerations for High Mobility Installations
Mobile Open Resevoir water temperature control systems must use high quality hose rated
for at least 150 psig and 180°F (1,034.25 kPa/10.34 bars and 82ºC).
Quick disconnects may be used for mobility, although they cause a drop in pressure. If
used, they must be sized carefully to minimize pressure drop. Don’t use quick disconnects
with check valves unless absolutely necessary.
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. Stainless steel is recommended because of the temperature constraints with plastic.
3-7 Making Process Water Connections
Closed Circuit/Direct Injection
For both types of systems, the connections are basically the
same. On the back of each unit, the connections are labeled appropriately. Connect the TO
PROCESS hookup to the entrance of the process and the FROM PROCESS hookup to