LG ARUN096BT2 Installation Manual - Page 22

Refrigerant piping installation Connection of Outdoor units 2 outdoor units Model Connection of gas pipe Don't cut the pipe less than 70mm(2-3/4inch) Ø 28.58(1-1/8) Blow nitrogen while brazing Ø 34.9(1-3/8) Master outdoor gas pipe Ø 31.8(1-1/4) ARCNN20 Ø 19.05(3/4) Ø 28.58(1-1/8) Ø 22.2(7/8) Ø 28.58(11/8) Main pipe Ø15.88(5/8) Ø19.05(3/4) OD34.9(1-3/8) OD28.58(11/8) OD19.05(3/4) Ø22.2(7/8) Ø38.1(1-1/2) Connection of liquid pipe Unit: mm(inch) Ø 9.52(3/8) Master outdoor liquid pipe Ø 12.7(1/2) Ø 19.05(3/4) Ø 12.7(1/2) Ø 12.7(1/2) Ø 15.88(5/8) Main pipe OD12.7(1/2) Ø22.2(7/8) Ø9.52(3/8) OD19.05(3/4) 3 outdoor units Model Connection of gas pipe Unit: mm(inch) Blow nitrogen Don't cut the pipe less than 70mm(2-3/4inch) while brazing Slave1 outdoor Ø 34.9(1-3/8) Ø 28.58(1-1/8) gas pipe Ø 31.8(1-1/4) Ø 19.05(3/4) Ø 28.58(1-1/8) Ø 22.2(7/8) Ø 28.58(1-1/8) Ø15.88(5/8) Ø19.05(3/4) OD34.9(1-3/8) OD 28.58(11/8) ARCNN20 OD19.05(3/4) Ø22.2(7/8) Ø38.1(1-1/2) Connection of liquid pipe Slave1 outdoor unit Ø 9.52(3/8) Ø 12.7(1/2) Ø 19.05(3/4) Ø 12.712.7(1/2) Ø 12.7(1/2) Ø 15.88(5/8) Ø9.52(3/8) OD19.05(3/4) OD12.7(1/2) Ø22.2(7/8) Y branch A B A To outdoor unit B To branch piping or indoor unit Model ARCNN30 Connection of gas pipe Unit: mm(inch) Blow nitrogen Don't cut the pipe less than 70mm(2-3/4inch) while brazing Master outdoor Ø 41.3(1-5/8) Ø 28.58(1-1/8) gas pipe Ø 31.8(1-1/4) Ø 34.9(1-3/8) Ø 28.58(1-1/8) Ø 34.9(1-3/8) Main pipe Ø19.05(3/4) OD28.58(1-1/8) Ø22.2(7/8) Connection of liquid pipe Master outdoor Ø 12.7(1/2) Ø 12.7(1/2) Ø 19.05(3/4) Ø 15.88(5/8) Ø 19.05(3/4 Ø 22.2(7/8) Main pipe Ø9.52(3/8) OD12.7(1/2) Facing downwards Within +/- 10° Facing upwards Viewed from point A in direction of arrow 22 Outdoor Unit Within ± 3° Within ± 3°