Trane Optimus RTHD - Freeze Protection Settings (Continued)

RTHD-SVX01L-EN
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Table 8. Freeze protection settings (continued)
Glycol
Percentage
(%)
Ethylene Glycol Propylene Glycol
Solution
Freeze
Point (°F)
Minimum
Recommended Low
Refrigerant Temp
Cutout (°F)
Minimum
Recommended
Leaving Water Temp
Cutout (°F)
Solution
Freeze
Point (°F)
Minimum
Recommended Low
Refrigerant Temp
Cutout (°F)
Minimum
Recommended
Leaving Water Temp
Cutout (°F)
18 18.7 15.3 21.7 20.9 17.5 23.9
20 16.8 13.4 19.8 19.3 15.9 22.3
22 14.7 11.3 17.7 17.6 14.2 20.6
24 12.5 9.1 15.5 15.7 12.3 18.7
25 11.4 8.0 14.4 14.8 11.4 17.8
26 10.2 6.8 13.2 13.8 10.4 16.8
28 7.7 4.3 10.7 11.6 8.2 14.6
30 5.1 1.7 8.1 9.3 5.9 12.3
32 2.3 -1.1 5.3 6.8 3.4 9.8
34 -0.7 -4.1 2.3 4.1 0.7 7.1
35 -2.3 -5.0 0.7 2.7 -0.7 5.7
36 -3.9 -5.0 -1.0 1.3 -2.1 4.3
38 -7.3 -5.0 -1.0 -1.8 -5.0 1.2
40 -10.8 -5.0 -1.0 -5.2 -5.0 -1.0
Note: Data shown in the above table provides protection against equipment damage. Refer to selection software or product support to verify unit
performance and leaving fluid temp capability of a specific unit configuration.
Example For Ice Building:
Chilled Water Setpoint (std. comfort cooling) = 45°F
Full Load Delta T (across evaporator) = 6°F
Ice Termination Setpoint (entering water temp.) = 26°F
Actual Leaving Solution Temperature = 26 - 6 = 20°F
Installation Mechanical