Trane Optimus RTHD - Compressor Electrical Data (Wye-Delta Continued); AFD Unit Electrical Data

Installation Mechanical
RTHD-SVX01K-EN 37
Freeze Protection
For unit operation in a low temperature environment,
adequate protection measures must be taken against
freezing. Adjusted settings and recommended ethylene
glycol solution strengths are contained in below table as
follows:
Important: 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.
Table 10. Freeze protection settings
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)
0 32.0 28.6 35.0 32.0 28.6 35.0
2 31.0 27.6 34.0 31.0 27.6 34.0
4 29.7 26.3 32.7 29.9 26.5 32.9
5 29.0 25.6 32.0 29.3 25.9 32.3
6 28.3 24.9 31.3 28.7 25.3 31.7
8 26.9 23.5 29.9 27.6 24.2 30.6
10 25.5 22.1 28.5 26.4 23.0 29.4
12 23.9 20.5 26.9 25.1 21.7 28.1
14 22.3 18.9 25.3 23.8 20.4 26.8
15 21.5 18.1 24.5 23.1 19.7 26.1
16 20.6 17.2 23.6 22.4 19.0 25.4
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
42 -14.6 -5.0 -1.0 -8.8 -5.0 -1.0
44 -18.6 -5.0 -1.0 -12.6 -5.0 -1.0
45 -20.7 -5.0 -1.0 -14.6 -5.0 -1.0
46 -22.9 -5.0 -1.0 -16.7 -5.0 -1.0
48 -27.3 -5.0 -1.0 -21.1 -5.0 -1.0
50 -32.1 -5.0 -1.0 -25.8 -5.0 -1.0