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AFFINITY SERIES OUTDOOR PACKAGED HEAT PUMP INSTALLATION MANUAL
Unit Startup cont.
14. If auxiliary electric heaters are installed, increase the heating
setpoint until the electric heat banks are sequenced on.
All stages of the auxiliary heater should be sequenced on
when the thermostat is in the Emergency Heat mode. Check
amperage of each element.
15. Adjust the heating setpoint below room temperature and
verify that the compressor and water valve or loop pumps
deactivate.
16. During all testing, check for excessive vibration, noise or
water leaks. Correct or repair as required.
17. Set system to desired normal operating mode and set
temperature to maintain desired comfort level.
18. Instruct the owner/operator in the proper operation of the
thermostat and system maintenance.
NOTE: Be certain to fill out and forward all warranty
registration papers.
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 the 026 Full Load.
The corrected cooling capacity at 90°F would be: 22,500 MBtu/h x 0.969 = 21,803 MBtu/h
The corrected heating capacity at 30°F would be: 18,700 MBtu/h x 0.913 = 17,073 MBtu/h
The corrected pressure drop at 30°F and 8 gpm would be: 10.8 feet of head x 1.270 = 13.7 feet of head
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
0.973
0.943
0.917
0.890
0.865
0.958
0.913
0.854
0.813
0.770
0.927
0.887
0.856
0.815
0.779
0.957
0.924
0.895
0.863
0.833
42
Pressure Drop
30 [-1.1]
1.000
1.000
0.991
1.075
0.979
0.965
1.225
0.955
1.324
0.943
1.419
0.981
0.969
1.270
0.950
1.433
0.937
1.614
0.922
0.991
1.242
0.972
1.343
0.947
1.383
0.930
1.523
0.911
1.639
0.986
0.970
0.951
1.235
0.936
1.323
0.920
1.399
1.163
1.130
1.816
1.127
1.197
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