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Ethylene Glycol Propylene Glycol
DT
[F]
4 6 8 10 12 14 16 4 6 8 10 12 14 16
[C] -15 -14 -13 -12 -11 -10 -9 -15 -14 -13 -12 -11 -10 -9
Leaving Water Temperature (F/C)
% Glycol
Ethylene Glycol Propylene Glycol
Low Refrig. Temp Cutout Solution Freeze Point Low Refrig. Temp Cutout Solution Freeze Point
°F °C °F °C °F °C °F °C
48 RTAC-SVX01F-EN
Installation - Mechanical
Table 9 Glycol Recommendations
38
--55556----66778--
3
34
-- 11 11 11 12 -- -- -- 13 13 15 17 -- --
1
30
-- 15 16 17 18 -- -- -- 19 21 -- -- -- --
-1
28
-- 18 18 19 -- -- -- -- 22 -- -- -- -- --
-2
26
-- 20 21 22 -- -- -- -- 25 -- -- -- -- --
-3
24
-- 22 23 26 -- -- -- -- -- -- -- -- -- --
-4
22
-- 24 26 -- -- -- -- -- -- -- -- -- -- --
-6
20
-- 26 30 -- -- -- -- -- -- -- -- -- -- --
-7
18
-- 29 -- -- -- -- -- -- -- -- -- -- -- --
-8
16
-- 31
-- -- -- -- --
-- -- -- -- -- -- --
-9
14
30 -- -- --
-- -- --
-- -- -- -- -- -- --
-10
12
32 -- -- --
-- -- --
-- -- -- -- -- -- --
-11
10.4
34 -- -- -- -- -- -- -- -- -- -- -- -- --
-12
These tables represent the MINIMUM RECOMMENDED glycol percentages for each operating condition
Operation is not recommended at certain operating conditions as some chillers may not satisfy maximum or
minimum velocity requirements or minimum performance requirements. Contact Trane Sales Representative
for more information regarding the operating limits of a particular chiller.
Table 10 Recommended Low Evaporator Refrigerant Cutout and % Glycol
0 28.0 -2.2 32 0 28.0 -2.2 32.0 0
5 25.0 -3.9 29 -1.7 25.3 -3.7 29.3 -1.5
10 21.5 -5.8 25.5 -3.6 22.4 -5.3 26.4 -3.1
15 17.5 -8.1 21.5 -5.8 19.1 -7.2 23.1 -4.9
20 12.8 -10.7 16.8 -8.4 15.3 -9.3 19.3 -7.1
25 7.4 -13.7 11.4 -11.4 10.8 -11.8 14.8 -9.6
30 1.1 -17.2 5.1 -15.0 5.3 -14.8 9.3 -12.6
35 -5.0 -20.6 -2.3 -19.1 -1.3 -19.5 2.7 -16.3
40 -5.0 -20.6 -10.8 -23.8 -5.0 -20.6 -5.2 -20.7
45 -5.0 -20.6 -20.7 -29.3 -5.0 -20.6 -14.6 -25.9
50 -5.0 -20.6 -32.1 -35.6 -5.0 -20.6 -25.8 -32.1
54 -5.0 -20.6 -42.3 -41.3 -5.0 -20.6 -36.1 -37.8
Chilled Water Temperature Cutout should be set to 5
°F below the lowest allowable Chilled Water Set Point bases on the %Glycol.