Trane R Series Installation, Operation And Maintenance Manual page 54

Installation - Mechanical
Table 27. Glycol recommendations
°F 4 6
DT °C 15 -14
38 (3) -- 5
34 (1) -- 11
30 (-1) -- 15
28 (-2) -- 18
26 (-3) -- 20
24 (-4) -- 22
22 (-6) -- 24
20 (-7) -- 26
18 (-8) -- 29
16 (-9) -- 31
14 (-10) 30 --
12 (-11) 32 --
10.4 (-12) 34 --
°F 4 6
DT
°C -15 -14
38 (3) -- 6
34 (1) -- 13
30 (-1) -- 19
28 (-2) -- 22
26 (-3) -- 25
24 (-4) -- --
22 (-6) -- --
20 (-7) -- --
18 (-8) -- --
16 (-9) -- --
14 (-10) -- --
12 (-11) -- --
10.4 (-12) -- --
Notes:
1. These tables represent the MINIMUM RECOMMENDED glycol
percentages for each operating condition
2. 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.
54
Ethylene Glycol
8 10 12 14
-13 -12 -11 -10
5 5 5 6
11 11 12 --
16 17 18 --
18 19 -- --
21 22 -- --
23 26 -- --
26 -- -- --
30 -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
Propylene Glycol
8 10 12 14
-13 -12 -11 -10
6 7 7 8
13 15 17 --
21 -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
Table 28. Recommended low evaporator refrigerant
cutout and percent glycol
16 Low Refrig. Temp
% Glycol
-9
°F
--
--
0 28.0
--
5 25.0
--
10 21.5
--
15 17.5
--
20 12.8
--
25 7.4
--
30 1.1
--
35 -5.0
--
40 -5.0
--
45 -5.0
--
50 -5.0
--
54 -5.0
16
0 28.0
-9
5 25.3
--
10 22.4
--
15 19.1
--
20 15.3
--
25 10.8
--
30 5.3
--
35 -1.3
--
40 -5.0
--
45 -5.0
--
50 -5.0
--
54 -5.0
--
Chilled Water Temperature Cutout should be set to 5
--
lowest allowable Chilled Water Set Point bases on the %Glycol.
--
Cutout Solution Freeze Point
°C °F
Ethylene
-2.2 32
-3.9 29
-5.8 25.5
-8.1 21.5
-10.7 16.8
-13.7 11.4
-17.2 5.1
-20.6 -2.3
-20.6 -10.8
-20.6 -20.7
-20.6 -32.1
-20.6 -42.3
Propylene Glycol
-2.2 32.0
-3.7 29.3
-5.3 26.4
-7.2 23.1
-9.3 19.3
-11.8 14.8
-14.8 9.3
-19.5 2.7
-20.6 -5.2
-20.6 -14.6
-20.6 -25.8
-20.6 -36.1
RTAC-SVX01J-EN
°C
0
-1.7
-3.6
-5.8
-8.4
-11.4
-15.0
-19.1
-23.8
-29.3
-35.6
-41.3
0
-1.5
-3.1
-4.9
-7.1
-9.6
-12.6
-16.3
-20.7
-25.9
-32.1
-37.8
°
F below the