Haier AU042FPERA Service Manual

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Haier AU042FPERA Service Manual Manual pdf 14 page image

126. Capacity Calculation Due to Capacity Modification Coefficient(1) Calculation method of refrigerating capacity----cooling capacity to be known=refrigeratingcapacity*(A*B*C*D*E)WE. Capacity compensation value of pipe length, pipe diameter and height dropC. Capacity modification value under airflow variationrate of indoor unit group (only for duct unit)A. Capacity compensation value of indoorair wet-bulb temperature conditionB. Capacity compensation value of outdoorair dry-bulb temperature conditionD. Capacity compensation suitable fortotal capability of indoor unit group1.21.11.00.90.815 20 24Indoor air dry-bulb temperature (°C )Capacity modification value1.21.11.00.9Outdoor air wet-bulb temperature (°C )Capacity modification value -5 200 255 3010 3515 40 431.11.00.9 80 90 100 110 120Airflow variation rate (%)Capacity modification value120100100 120 1308060402020 40 60 800Total capacity of indoor unit group (%)StandardcapacityNotes for E:(1) The mian pipe (from outdoor to the first branch pipe) diameter should be enlarged one sizewhen the single way pipe length is over 90m.(2) When in cooling mode, outdoor is lower than indoor; or when in heating mode, outdoor is higher than indoor, thecompensation factor should be decreased the below value from figure E.0.951.000.900.850.80 0 20 40 60 80 100 120 140Capacity modification valueSingle way pipe length (m)Liquid pipe： φ12.7Gas pipe： φ19.05Liquid pipe： φ9.52Gas pipe： φ15.88Vertical height drop betweenindoor and outdoor 5m 10m 15m 20m 25m 30m 35m 40m 45m 50mAdjustment factor 0.003 0.006 0.009 0.012 0.015 0.018 0.021 0.024 0.027 0.03Notes for E:(1) The main pipe (from outdoor to the first branch pipe) diameter should be enlarged one sizewhen the single way pipe length is over 90m.(2) When in cooling mode, outdoor is lower than indoor; or when in heating mode, outdoor is higher than indoor, thecompensation factor should be decreased the below value from figure E.