Frigidaire FFHP124WS1 Installation Instructions - Page 22

5. Pipe length and refrigerant amount for multi split type air conditioner. (see tabel 2.3) Table 2.3 Cooling capacity Connective pipe (BTU/h) length (Lx) Max connective pipe total length (H1) Max height difference (H2) Air purging Additional amount of refrigerant to be charged 26000 25'~66' (x=1, 2, 3) 197' (H1=L1+L2+...+Lx, x≤3) 50' Use vacuum pump. R410a: 0.22ozs/ft (Pipe length-82') 34400 25'~82' (x=1, 2, 3, 4, 5) 246' (H1=L1+L2+...+Lx, x≤5) 50' Use vacuum pump. R410a: 0.22ozs/ft (Pipe length-131') Outdoor unit Lx H1 L1 L2 L3 L4 L5 a b c d e Indoor unit Caution in handling the packed valve integrated in the outlets of outdoor unit. 1. Operation of opening packed valve: Open the valve stem until it hits against the stopper. Do not try to open it further. 2. Operation of closing packed valve: Securely tighten the valve stem with a special tool. Then securely tighten the valve stem cap with a spanner or the like. Refer to the table on page 17 for valve cap tightening torque. Note: There is a charging port integrated in the low side outlet, but not in the high side outlet. The low side outlet is shown in the sketch map below. Refrigerant Outdoor unit A Indoor unit Gas C D B Packed valve Half union Valve body Flare nut Cap Charge port Valve stem Stopper 21 Purging the system