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SMC Series Chillers Page 15
; A corrosion inhibitor suitable for the materials in the system should be added to the
glycol/water solution.
; If straight water use is desired, contact the Sterlco Engineering Department.
; The six gallon (23 liter) reservoir is not designed to withstand water pressure above 5 psi (34
kPa).
; The fill opening and vent line must be vented to the atmosphere for proper operation.
Figure 5
Ethylene Glycol Curve
E
t
h
y
l
ene g
l
yco
l
requ
i
re
d
Normal operating range is between 30°F and 70°F
for evaporator freeze protection
Chilled water
operating temperature °F
(set point)
10%
20%
30%
Ethylene
glycol
percent
by
volume
0%
0º 30º 40º 50º 60º 70º