Table of Contents
Advertisement
Freeze Protection
For unit operation in a low temperature environment,
adequate protection measures must be taken against
Table 7. Agility chiller control settings based on ethylene glycol percentage
Solution Freeze Point
Ethylene Glycol
Percentage, %
°F
0
32.0
2
31.0
4
29.7
5
29.0
6
28.3
8
26.9
10
25.5
12
23.9
14
22.3
15
21.5
16
20.6
18
18.7
20
16.8
22
14.7
24
12.5
25
11.4
26
10.2
28
7.7
30
5.1
32
2.3
34
-0.7
35
-2.3
36
-3.9
38
-7.3
40
-10.8
Table 8. Agility chiller control settings based on propylene glycol percentage
Propylene
Solution Freeze Point
Glycol
°F
Percentage, %
0
32.0
2
31.0
4
29.9
5
29.3
6
28.7
8
27.6
10
26.4
12
25.1
14
23.8
15
23.1
16
22.4
18
20.9
20
19.3
HDWA-SVX001D-EN
freezing. Refer to the following tables for adjusted
settings and recommended ethylene glycol and
propylene glycol solution strengths.
Minimum Recommended LRTC
°C
°F
0.0
28.6
-0.6
27.6
-1.3
26.3
-1.7
25.6
-2.0
24.9
-2.8
23.5
-3.6
22.1
-4.5
20.5
-5.4
18.9
-5.9
18.1
-6.3
17.2
-7.4
15.3
-8.4
13.4
-9.6
11.3
-10.8
9.1
-11.4
8.0
-12.1
6.8
-13.5
4.3
-15.0
1.7
-16.5
-1.1
-18.2
-4.1
-19.0
-5.7
-19.9
-7.3
-21.8
-10.7
-23.8
-14.2
Minimum Recommended LRTC
°C
°F
0.0
28.6
-0.6
27.6
-1.2
26.5
-1.5
25.9
-1.8
25.3
-2.5
24.2
-3.1
23.0
-3.8
21.7
-4.6
20.4
-5.0
19.7
-5.4
19.0
-6.2
17.5
-7.1
15.9
I I n n s s t t a a l l l l a a t t i i o o n n : : M M e e c c h h a a n n i i c c a a l l
Minimum Recommended LWTC
°C
°F
-1.9
34.0
-2.5
33.0
-3.2
31.7
-3.6
31.0
-3.9
30.3
-4.7
28.9
-5.5
27.5
-6.4
25.9
-7.3
24.3
-7.7
23.5
-8.2
22.6
-9.3
20.7
-10.3
18.8
-11.5
16.7
-12.7
14.5
-13.3
13.4
-14.0
12.2
-15.4
9.7
-16.8
7.1
-18.4
5.0
-20.1
5.0
-20.9
5.0
-21.8
5.0
-23.7
5.0
-25.7
5.0
Minimum Recommended LWTC
°C
°F
-1.9
34.0
-2.4
33.0
-3.1
31.9
-3.4
31.3
-3.7
30.7
-4.4
29.6
-5.0
28.4
-5.7
27.1
-6.5
25.8
-6.8
25.1
-7.2
24.4
-8.1
22.9
-9.0
21.3
°C
1.1
0.5
-0.2
-0.6
-0.9
-1.7
-2.5
-3.4
-4.3
-4.7
-5.2
-6.3
-7.3
-8.5
-9.7
-10.3
-11.0
-12.4
-13.8
-15.0
-15.0
-15.0
-15.0
-15.0
-15.0
°C
1.1
0.6
-0.1
-0.4
-0.7
-1.4
-2.0
-2.7
-3.5
-3.8
-4.2
-5.1
-6.0
23
Advertisement
Table of Contents
