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SCW Series Central Chilling Stations Page 23 of 77
From Process
The chilled water return for water returning back to the chiller
from the process to be cooled and recirculated. Adjust the
butterfly valve for the pressure drop that corresponds to the model
number of the chiller. Pressure drop is equal to supply pressure
minus return pressure
Model Water Side Pressure Drop
Condenser (each) Evaporator (each) Number
Flow (gpm) PD (psi) Flow (gpm) PD (psi)
SCWW/R60 91 4.0 72 5.3
SCWW/R75 102 4.7 90 4.5
SCWW/R90 117 4.4 107 5.6
SCWW/R100 150 5.5 123 3.9
SCWWR115 166 4.3 140 3.0
SCWW/R145 196 4.1 175 4.8
SCWW/R165 219 4.1 200 4.6
SCWW/R195 278 4.7 232 6.0
3-5 Making Tank Piping Connections
If you have purchased the SCW Series central chilling station with
the integral pump tank, please proceed with this section.
Return
Bring the chilled water returning from the process to the pump
tank warm From Process side. This line is sized according to the
flow rate from the process to the pump tank. See Section 3-3 on
Page 21 for more information on piping considerations.
Important!
Do not use the SCW Series unit to support piping.
Makeup
Connect a city water source to maintain water level in the pump
tank.
Overflow
Connect the OVERFLOW outlet to an approved, trapped drain to
permit excess water in the pump tank to overflow to the drain. The
overflow line is sized according to the size of the pump tank.
To Drain
Connect to a 1½” line (approx. 63 mm) leading to an approved,
trapped drain. You can drain the pump tank if necessary.