York YAP026 Installation Manual

York YAP026 Installation Manual Manual pdf 42 page image

42Unit Startup cont.14. If auxiliary electric heaters are installed, increase the heatingsetpoint until the electric heat banks are sequenced on.All stages of the auxiliary heater should be sequenced onwhen the thermostat is in the Emergency Heat mode. Checkamperage of each element.15. Adjust the heating setpoint below room temperature andverify that the compressor and water valve or loop pumpsdeactivate.16. During all testing, check for excessive vibration, noise orwater leaks. Correct or repair as required.17. Set system to desired normal operating mode and settemperature to maintain desired comfort level.18. Instruct the owner/operator in the proper operation of thethermostat and system maintenance.NOTE: Be certain to fill out and forward all warrantyregistration papers.Antifreeze CorrectionsCatalog performance can be corrected for antifreeze use. Please use the following table and note the example given.Antifreeze Correction ExampleAntifreeze solution is Propylene Glycol 20% by weight. Determine the corrected heating and cooling performance at 30°Fand 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/hThe corrected heating capacity at 30°F would be: 18,700 MBtu/h x 0.913 = 17,073 MBtu/hThe corrected pressure drop at 30°F and 8 gpm would be: 10.8 feet of head x 1.270 = 13.7 feet of headAntifreeze Type Antifreeze % by wt Heating Cooling Pressure DropEWT - °F [°C] 30 [-1.1] 90 [32.2] 30 [-1.1]Water 0 1.000 1.000 1.000Ethylene Glycol10 0.973 0.991 1.07520 0.943 0.979 1.16330 0.917 0.965 1.22540 0.890 0.955 1.32450 0.865 0.943 1.419Propylene Glycol10 0.958 0.981 1.13020 0.913 0.969 1.27030 0.854 0.950 1.43340 0.813 0.937 1.61450 0.770 0.922 1.816Ethanol10 0.927 0.991 1.24220 0.887 0.972 1.34330 0.856 0.947 1.38340 0.815 0.930 1.52350 0.779 0.911 1.639Methanol10 0.957 0.986 1.12720 0.924 0.970 1.19730 0.895 0.951 1.23540 0.863 0.936 1.32350 0.833 0.920 1.399WARNING: Gray area represents antifreeze concentrations greater than 35% by weight and shouldbe avoided due to the extreme performance penalty they represent.AFFINITY SERIES OUTDOOR PACKAGED HEAT PUMP INSTALLATION MANUAL