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44 RTAC-SVX01F-EN
Installation - Mechanical
Evaporator Water Pressure Drop RTAC 250 - 500 Ton
Figure 24 Evaporator Water Pressure Drop
CAUTION
Proper Water Treatment!
The use of untreated or improperly treated water in a unit may result in
scaling, erosion, corrosion, algae or slime. It is recommended that the
services of a qualified water treatment specialist be engaged to
determine what water treatment, if any, is required. Trane assumes no
responsibility for equipment failures which result from untreated or
improperly treated water, or saline or brackish water.
If using an acidic commercial flushing solution, construct a temporary
bypass around the unit to prevent damage to internal components of the
evaporator.
Dirt, scale, products of corrosion and other foreign material will adversely affect heat
transfer between the water and system components. Foreign matter in the chilled
water system can also increase pressure drop and, consequently, reduce water flow.
Proper water treatment must be determined locally, depending on the type of system
and local water characteristics.
Water-Side Pressure Drop vs Flow Rate
1.0
10.0
100.0
100 1000 10000
Flow Rate (GPM)
Pressure Drop (ft H2O)
250S (50Hz)
275S
300S, 250H (50Hz)
350S (60 Hz), 275H, 300H
350S (50Hz)
375S (50Hz)
400S, 350H
450S (60Hz), 375H (50Hz)
500S (60Hz), 400H