
6
The units can operate with a leaving chilled fluid temperature from of20℉ to 60℉(-6℃
~16℃) A glycol solution is required when leaving chilled fluid temperature is below4.5
℃.The use of glycol will reduce the performance of the unit depending on
concentration.
Ethylene Glycol Factors
% by Weight
Freezing Point ( )℃ ℉
Ambient Temperature ( )℃ ℉
Cooling Capacity Correction Factor
Water flow Correction Factor
Pressure Drop Correction Factor
10
-3.3(26)
8.3(47)
0.998
1.036
1.07
20
-7.8(18)
-1.7(29)
0.993
1.060
1.10
30
-13.9(7)
-6.7(20)
0.987
1.092
1.18
40
-21.7(-7)
-16.7(2)
0.980
1.132
1.24
50
-33.3(-29)
-26.7(-16)
0.973
1.182
1.30
NOTE: Ethylene and propylene glycol ratio is the scope of Standard 550/590-98
certification program.
ARI
ANTIFREEZE
℃.
10
GREE Central Air Conditioners
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