24
Enertech Global IOM, XT Models
Table 5: Antifreeze Percentages by Volume
0.9600
0.9700
0.9800
0.9900
1.0000
1.0100
1.0200
1.0300
1.0400
1.0500
-5 0 5 10 15 20 25 30 32
Freeze Protection (deg F)
Procool Methanol Propylene Glycol
Figure 9: Antifreeze Specic Gravity
NOTE: Most manufacturers of antifreeze solutions
recommend the use of de-ionized water. Tap water
may include chemicals that could react with the
antifreeze solution.
Type of Antifreeze
Minimum Temperature for Freeze Protection
10°F (-12.2°C) 15°F (-9.4°C) 20°F (-6.7°C) 25°F (-3.9°C)
ProCool (Ethanol) 25% 22% 17% 12%
Methanol 25% 21% 16% 10%
Propylene Glycol 38% 30% 22% 15%
Heat Transfer Fluid (HTF) Mix according to manufacturer’s directions on container label
Antifreeze solutions are shown in pure form - not premixed
HTF is a premixed Methanol solution
Section 5: Unit Piping Installation
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