Sterlco S Series Central Chilling Stations - Manual (Page 24)

Page 24 of 77 SCW Series Central Chilling Stations
3-6 Water Connection Sizing Considerations
Important!
• Run all external chilled water connections with adequate size to the
process.
• Provide the largest possible openings and passages for the flow of chilled
water through platens, dies, molds, or other pieces of equipment.
• Minimum external pressure drop is critical for proper operation.
3-7 Galvanic Corrosion Considerations
Water circuit piping components are primarily ferrous (iron) and
react electro-chemically with non-ferrous metallic materials such
as copper. Some water has dissolved minerals that will greatly
accelerate the reaction between dissimilar metals.
Use PVC or ferrous piping to minimize galvanic action. If piping
must be copper, use dielectric unions at the chiller.
3-8 Water Treatment Considerations
Water treatment is important in any piping system. In some
locations, raw water may be used in the system without problem;
in other locations, it will result in large deposits of scale and
corrosion.
Sterling offers a complete line of water treatment equipment.
Contact your Sterling sales representative for water testing and
treatment options.
3-9 Making Water-Cooled Condenser Connections
SCW Series water-cooled chilling stations use city or tower water
as a cooling medium. All external condenser supply and discharge
piping and connections should be of adequate size. Water
regulating valves are not required on the SCW Central Chiller if
the tower water does not fall below 65°F (18ºC). Water flow must
be adjusted based upon the pressure drop in the following table on
the next page.