Panasonic U-8ME1E8 Installation Instructions Manual

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Panasonic U-8ME1E8 Installation Instructions Manual Manual pdf 57 page image

569. INSTRUCTIONS FOR HIGH-COP MODEHigh-COP modeSetting the DIP switch (S011) on the outdoor unit PCB to “ON” activates the high-COP mode.* Hereafter, the DIP switch (S011) “ON” is defined as the high-COP mode and “OFF” is defined as the standard COP mode.Outdoor unit capacity and tubing diameter during high-COP modeWhen operating in the high-COP mode, the outdoor unit capacity decreases against the standard COP mode.Referring to the following table, select the most suitable unit and main pipe diameter for the air conditioning load.Total systemhorsepower (kW) Combined outdoor units Liquid tubing(mm)Gas tubing(mm)8 hp (22.4) — — — — —10 hp (28.0) U-14ME1E8(E) — — ø9.52 ø22.2212 hp (33.5) U-16ME1E8(E) — — ø12.7 ø25.414 hp (40.0) U-18ME1E8(E) — — ø12.7 ø25.416 hp (45.0) U-20ME1E8(E) — — ø12.7 ø28.5818 hp (50.0) U-14ME1E8(E) U-8ME1E8(E) — ø15.88 ø28.5820 hp (56.0) U-16ME1E8(E) U-8ME1E8(E) — ø15.88 ø28.5822 hp (61.5) U-18ME1E8(E) U-8ME1E8(E) — ø15.88 ø28.5824 hp (68.0) U-16ME1E8(E) U-16ME1E8(E) — ø15.88 ø28.5826 hp (73.0) U-18ME1E8(E) U-16ME1E8(E) — ø19.05 ø31.7528 hp (78.5) U-20ME1E8(E) U-16ME1E8(E) — ø19.05 ø31.7530 hp (85.0) U-20ME1E8(E) U-18ME1E8(E) — ø19.05 ø31.7532 hp (90.0) U-20ME1E8(E) U-20ME1E8(E) — ø19.05 ø31.7534 hp (96.0) U-18ME1E8(E) U-16ME1E8(E) U-8ME1E8(E) ø19.05 ø31.7536 hp (101.0) U-16ME1E8(E) U-16ME1E8(E) U-16ME1E8(E) ø19.05 ø38.138 hp (107.0) U-18ME1E8(E) U-16ME1E8(E) U-16ME1E8(E) ø19.05 ø38.140 hp (113.0) U-20ME1E8(E) U-16ME1E8(E) U-16ME1E8(E) ø19.05 ø38.142 hp (118.0) U-20ME1E8(E) U-18ME1E8(E) U-16ME1E8(E) ø19.05 ø38.144 hp (124.0) U-20ME1E8(E) U-18ME1E8(E) U-18ME1E8(E) ø19.05 ø38.146 hp (130.0) U-20ME1E8(E) U-20ME1E8(E) U-18ME1E8(E) ø19.05 ø38.148 hp (135.0) U-20ME1E8(E) U-20ME1E8(E) U-20ME1E8(E) ø19.05 ø38.1* Be sure that the total load of indoor units (load when operating the maximum number of units) should not exceed 130% of the outdoorunit capacity.Tube diameter of each outdoor unitWhen connecting the tube to the outdoor unit in the high-COP mode, you may need to use smaller diameter tubes.So, it is necessary to provide the reducer for the connection. Supply the reducer in the field.For the system to which more than two outdoor units are connected, you can use the tube diameter of the standard COP mode betweenthe outdoor unit and the first distribution joint (inside the dotted lines of Fig. 1).* Beyond the first distribution joint (outside the dotted lines of Fig. 1), be sure to select the tube diameter according to the outdoor unitcapacity in the high-COP mode.* The balance tube diameter is 6.35 mm in every unit.