York LX SERIES Technical Manual

Also see for LX series: Owner's manual Technical guide Technical guide Technical guide Installation manual

Contents

York LX SERIES Technical Manual Manual pdf 4 page image

5545023-YTG-A-06184 Johnson Controls Unitary ProductsCHARGING PROCEDURES:1. Check the Factory Unit Charge listed on the unit nameplate to verify the refrigerant charge for the outdoor unit, the smallest matched indoor unit, and the 15 feetof interconnecting lineset.2. Verify the indoor metering device and additional charge required for the specific matched indoor unit in the system using the above table.3. Add additional charge for the amount of interconnecting lineset tubing greater than 15 feet at the rate specified in Physical and Electrical Data Table.4. For installations requiring additional charge, weigh in refrigerant for the specific matching indoor unit and actual lineset length.5. Once the charge adders for matched indoor unit and for lineset have been weighed in, verify the system operation against the temperatures and pressures in theCharging Chart for the outdoor unit. Locate Charging Charts on the outdoor unit and also in the Service Data Application Guide on www.upgnet.com. Follow theSubcool or Superheat charging procedure in the Installation Manual according to the type of indoor metering device in the system, and allow ten minutes aftereach charge adjustment for the system operation to stabilize. Record the charge adjustment made to match the Charging Chart.6. Permanently stamp the unit nameplate with the TOTAL SYSTEM CHARGE defined as follows: TOTAL SYSTEM CHARGE = Base Charge (as shipped) +charge adder for matched indoor unit + charge adder for actual lineset length + charge adjustments to match the Charging Chart.SYSTEM CHARGE FOR VARIOUS MATCHED SYSTEMSOutdoor Unit YFK24B21S YFK36B21S YFK48B21S YFK60B21SRequired TXV 1,2 BH1 BA1 BC1 BC1Indoor Unit 3,4,5 Additional Charge, ozAE24B 0 – – –AE30B 2 – – –AE36(B,C) 4 0 – –AE42C – 6 – –AE48(C,D) – 6 0 –AE60C 8 8 5 0AE60D – 36 8 0AVC24B 0 – – –AVC30B 2 – – –AVC36(B,C) 4 0 – –AVC42C 6 6 – –AVC48(C,D) 7 6 0 –AVC60C 8 8 5 0AVC60D – 36 8 0CF/CM/CU24(A,B,C) 0 – – –CF/CM/CU30(A,B,C,D) 2 – – –CF/CM/CU36(A,B,C,D) 4 0 – –CF/CM/CU42(B,C,D) 6 3 – –CF/CM/CU48(C,D) 7 6 0 –CF/CM/CU60(C,D) 8 8 5 0CF/CM64D – 36 8 0All of the combinations shown in the above System Charge table require Advanced Main Air Circulating Fan indoor product. “Coil Only” matchesare not available for these systems.FOOTNOTES:1. For applications requiring a TXV, use S1-1TVM*** series kit.2. A TXV kit must be used with these indoor units to obtain system performance.3. Systems matched with furnaces or air handlers not equipped with blower-off delays may require blower Time Delay Kit S1-2FD06700224.4. CF coils cannot be used in horizontal applications.5. Charge adders shown above do not indicate that coils are rated for every application. Refer to Performance Data Tables for actual performance for specified sys-tem matches. Obtain certified system ratings from www.ahridirectory.org.