Antifreeze Corrections - York YAFS012 Manual

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Antifreeze Corrections

Catalog performance can be corrected for antifreeze use. Please use the following table and note the example given.
Antifreeze Type
EWT - °F [°C]
Water
Ethylene Glycol
Propylene Glycol
Ethanol
Methanol
WARNING: Gray area represents antifreeze concentrations greater than 35% by weight and should be
avoided due to the extreme performance penalty they represent.
Antifreeze Correction Example
Antifreeze solution is Propylene Glycol 20% by weight. Determine the corrected heating and cooling performance at 30°F and 90°F
respectively as well as pressure drop at 30°F for a Affinity Series Single Speed Model 022-ECM.
The corrected cooling capacity at 90°F would be: 22,400 MBtu/h x 0.969 = 21,706 MBtu/h
The corrected heating capacity at 30°F would be: 14,500 MBtu/h x 0.913 = 13,239 MBtu/h
The corrected pressure drop at 30°F and 6 gpm would be: 6.6 feet of head x 1.270 = 8.38 feet of head
The manufacturer works continually to improve its products. As a result, the design and specifi cations of each product at the time of order may be changed without notice. Purchaser's approval of this data set signifi es that the equipment is acceptable under the provisions
of the job specifi cation. Statements and other information contained herein are not express warranties and do not form the basis of any bargain between the parties, but are merely the manufacturer's opinion or commendation of its products. York and Affi nity are registered
trademarks of Johnson Controls, Inc., and are used with permission.
SD2500AK6 11/22
P.O.:
Unit Tag:
Antifreeze % by wt
0
10
20
30
40
50
10
20
30
40
50
10
20
30
40
50
10
20
30
40
50
Heating Cooling
30 [-1.1] 90 [32.2]
1.000 1.000
0.973 0.991
0.943 0.979
0.917 0.965
0.890 0.955
0.865 0.943
0.958 0.981
0.913 0.969
0.854 0.950
0.813 0.937
0.770 0.922
0.927 0.991
0.887 0.972
0.856 0.947
0.815 0.930
0.779
0.957 0.986
0.924 0.970
0.895 0.951
0.863 0.936
0.833 0.920
21
Affinity & Affinity Advanced Series
1 - 6 Tons 60Hz
Pressure Drop
30 [-1.1]
1.000
1.075
1.163
1.225
1.324
1.419
1.130
1.270
1.433
1.614
1.816
1.242
1.343
1.383
1.523
0.911 1.639
1.127
1.197
1.235
1.323
1.399
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