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13-21-615 v01 Page 18
It is mandatory that any water cooled unit be installed in a shelter heated to
temperatures above freezing (32
F., 0
C).
AFTERCOOLER
Water Temperature to
Heat Exchanger
Gallons/minute
(Minimum)
Maximum Water
Flow
Gallons/minute *
Approximate
Water Pressure Drop
@ 90
F Water
Temperature PSI
HP
Model
60
F
70
F
80
F
90
F
75
SAV/ST75-100G2B
2.2
2.5
2.9
3.6
26.0
Less than 1 PSI for any
flow rate shown in the
table
100
2.9
3.3
3.9
4.7
26.0
* Flows exceeding "Maximum Water Flow" will cause severe erosion and will void unit warranty.
Figure 2-6 AFTERCOOLER APPROXIMATE WATER FLOW
WATER PIPING (Water-Cooled Heat Exchanger Models Only)
On machines equipped with water-
cooled heat exchangers, the water inlet and outlet connections are located in the unit enclosure flange on
the end of the unit opposite the control box.
The water source should be capable of supplying up to the maximum flow shown in Figure 2-5, page 17,
and Figure-2-6, at a minimum pressure of 40 psig (2.8 bar); maximum allowable water pressure is 150
psig (10.3 bar). The water flow rates shown are approximate and a guide to sizing piping, cooling tower
and other water system equipment.