;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

30%

Ethylene glycol required

for evaporator freeze protection

Ethylene glycol percent by volume

20%

10%

0%

30º

40º

50º

60º

70º

Chilled water

operating temperature °F

(set point)

Normal operating range is between 30°F and 70°F

SMC Series Chillers

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Image 15
Sterling A0544325 installation manual Ethylene Glycol Curve