Trane CGAM Installation & Operation Manual page 51

Air-cooled scroll chillers 20 - 130tons
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Installation - Mechanical
Table 22.
Low Evap Refrigerant Temp Cutout and Low Water Temp Cutout
ETHYLENE GLYCOL
Low
Refrig
Solution
Temp
%
Freeze
Cutout
Glycol
Point [F]
[F]
0
32
22
1
31.6
21.6
2
31.0
21.0
3
30.3
20.3
4
29.7
19.7
5
29.0
19.0
6
28.3
18.3
7
27.6
17.6
8
26.9
16.9
9
26.2
16.2
10
25.5
15.5
11
24.7
14.7
12
23.9
13.9
13
23.1
13.1
14
22.3
12.3
15
21.5
11.5
16
20.6
10.6
17
19.7
9.7
18
18.7
8.7
19
17.8
7.8
20
16.8
6.8
21
15.8
5.8
22
14.7
4.7
23
13.7
3.7
24
12.5
2.5
25
11.4
1.4
26
10.2
0.2
27
9.0
-1.0
28
7.7
-2.3
29
6.4
-3.6
30
5.1
-4.9
31
3.7
-6.3
32
2.3
-7.7
33
0.8
-9.2
34
-0.7
-10.7
35
-2.3
-12.3
36
-3.9
-13.9
37
-5.6
-15.6
38
-7.3
-17.3
39
-9.0
-19.0
40
-10.8
-19.0
CG-SVX17E-EN
Low
Min Chilled Water Set
Water
Point [F]
Temp
Cutout
Number of
[F]
compressors
2
4
35
42
42
34.6
41.6
39.1
38.2
34.0
41.0
38.5
37.6
33.3
40.3
37.8
37.0
32.7
39.7
37.2
36.3
32.0
39.0
36.5
35.7
31.3
38.3
35.8
35.0
30.6
37.6
35.1
34.3
29.9
36.9
34.4
33.6
29.2
36.2
33.7
32.9
28.5
35.5
33.0
32.1
27.7
34.7
32.2
31.4
26.9
33.9
31.4
30.6
26.1
33.1
30.6
29.8
25.3
32.3
29.8
29.0
24.5
31.5
29.0
28.1
23.6
30.6
28.1
27.2
22.7
29.7
27.2
26.3
21.7
28.7
26.2
25.4
20.8
27.8
25.3
24.5
19.8
26.8
24.3
23.5
18.8
25.8
23.3
22.5
17.7
24.7
22.2
21.4
16.7
23.7
21.2
20.3
15.5
22.5
20.0
19.2
14.4
21.4
18.9
18.1
13.2
20.2
17.7
16.9
12.0
19.0
16.5
15.7
10.7
17.7
15.2
14.4
9.4
16.4
13.9
13.1
8.1
15.1
12.6
11.8
6.7
13.7
11.2
10.4
5.3
12.3
10.4
10.4
3.8
10.8
10.4
10.4
2.3
10.4
10.4
10.4
0.7
10.4
10.4
10.4
-0.9
10.4
10.4
10.4
-2.6
10.4
10.4
10.4
-4.3
10.4
10.4
10.4
-5.0
10.4
10.4
10.4
-5.0
10.4
10.4
10.4
Solution
%
Freeze
Glycol
Point [F]
6
42
0
32
1
31.6
2
31.0
3
30.4
4
29.9
5
29.3
6
28.7
7
28.1
8
27.6
9
27.0
10
26.4
11
25.7
12
25.1
13
24.4
14
23.8
15
23.1
16
22.4
17
21.6
18
20.9
19
20.1
20
19.3
21
18.4
22
17.6
23
16.7
24
15.7
25
14.8
26
13.8
27
12.7
28
11.6
29
10.5
30
9.3
31
8.1
32
6.8
33
5.5
34
4.1
35
2.7
36
1.3
37
-0.3
38
-1.8
39
-3.5
40
-5.2
PROPYLENE GLYCOL
Low
Low
Min Chilled Water Set
Refrig
Water
Point [F]
Temp
Temp
Cutout
Cutout
Number of
[F]
[F]
compressors
2
22
35
42
21.6
34.6
41.6
21.0
34.0
41.0
20.4
33.4
40.3
19.9
32.9
39.7
19.3
32.3
39.0
18.7
31.7
38.3
18.1
31.1
37.6
17.6
30.6
36.9
17.0
30.0
36.2
16.4
29.4
35.5
15.7
28.7
34.7
15.1
28.1
33.9
14.4
27.4
33.1
13.8
26.8
32.3
13.1
26.1
31.5
12.4
25.4
30.6
11.6
24.6
29.7
10.9
23.9
28.7
10.1
23.1
27.8
9.3
22.3
26.8
8.4
21.4
25.8
7.6
20.6
24.7
6.7
19.7
23.7
5.7
18.7
22.5
4.8
17.8
21.4
3.8
16.8
20.2
2.7
15.7
19.0
1.6
14.6
17.7
0.5
13.5
16.4
-0.7
12.3
15.1
-1.9
11.1
13.7
-3.2
9.8
12.3
-4.5
8.5
10.8
-5.9
7.1
10.4
-7.3
5.7
10.4
-8.7
4.3
10.4
-10.3
2.7
10.4
-11.8
1.2
10.4
-13.5
-0.5
10.4
-15.2
-2.2
10.4
4
6
42
42
39.1
38.2
38.5
37.6
37.8
37.0
37.2
36.3
36.5
35.7
35.8
35.0
35.1
34.3
34.4
33.6
33.7
32.9
33.0
32.1
32.2
31.4
31.4
30.6
30.6
29.8
29.8
29.0
29.0
28.1
28.1
27.2
27.2
26.3
26.2
25.4
25.3
24.5
24.3
23.5
23.3
22.5
22.2
21.4
21.2
20.3
20.0
19.2
18.9
18.1
17.7
16.9
16.5
15.7
15.2
14.4
13.9
13.1
12.6
11.8
11.2
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
10.4
51

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