York sunline 2000 Installation Manual

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York sunline 2000 Installation Manual Manual pdf 35 page image

362242-YIM-B-0109Johnson Controls Unitary Products 35Drive Selection1. Determine side or bottom supply air duct application.2. Determine desired airflow.3. Calculate or measure the amount of external static pressure.4. Using the operating point determined from steps 1, 2 & 3, locate this point on the appropriate supply air blower performance table. (Linearinterpolation may be necessary.)5. Noting the RPM and BHP from step 4, locate the appropriate motor and/or drive on the RPM selection table.6. Review the BHP compared to the motor options available. Select the appropriate motor and/or drive.7. Review the RPM range for the motor options available. Select the appropriate drive if multiple drives are available for the chosen motor.8. Determine turns open to obtain the desired operation point.Example1. 2200 CFM2. 1.6 iwg3. Using the supply air blower performance table below, the following data point was located: 1478 RPM & 1.82 BHP.4. Using the RPM selection table below, Size X and Model Y is found.5. 1.82 BHP exceeds the maximum continuous BHP rating of the 1.5 HP motor. The 2 HP motor is required.6. 1478 RPM is within the range of the 2 HP drive.7. Using the 2 HP motor and drive, 2.5 turns open will achieve 1478 RPM.Example Supply Air Blower PerformanceAir Flow(CFM)Available External Static Pressure - IWG0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPField SuppliedDrive Standard Drive Option HIgh Static Drive Option2000 907 1.00 990 1.07 1070 1.15 1146 1.23 1220 1.31 1291 1.40 1359 1.49 1425 1.58 1488 1.68 1550 1.772200 960 1.24 1043 1.31 1123 1.39 1199 1.47 1273 1.55 1344 1.64 1412 1.73 1478 1.82 1541 1.92 1602 2.012400 1015 1.51 1099 1.59 1178 1.66 1255 1.74 1329 1.83 1400 1.92 1468 2.01 1534 2.10 1597 2.19 1658 2.292600 1074 1.83 1157 1.90 1237 1.98 1314 2.06 1387 2.14 1458 2.23 - - - - - - - -Table X: RPM SelectionSize(Tons) Model HP MaxBHPMotorSheaveBlowerSheave5 TurnsOpen4 TurnsOpen3 TurnsOpen2 TurnsOpen1 TurnOpenFullyClosedX Y 1.5 1.73 1VL44 AK56 930 995 1060 1130 1195 12602 2.3 1VP56 AK56 1325 1395 1460 1525 1590 1660