2020 MXZ Multi-Zone Tech Manual

Specifications subject to change without notice. 14 Additional Charge Calculation MXZ-C WITH BRANCH BOX ADDITIONAL REFRIGERANT CHARGE CALCULATION Ported Type Units Require additional charge if piping is greater than 98 feet Example: Total piping = 188 ft 188 ft - 98 ft = 90 ft 90 x 0.21 = 18.9 oz Additional Charge Branch Box Type Units Total Indoor Unit Capacity 4C36 - 5C42 - 8C48 to 27K 53 oz 1/4" Pipe 0.21 oz/ft + 3/8" Pipe 0.55 oz/ft + 28K- 54K 88 oz 55K - 62K 106 oz Example Total 1/4" Piping 112 ft x 0.21 = 23.52 oz Total 3/8" Piping 125 ft x 0.55 = 68.75 oz Total Indoor BTU Capacity 42,000 = 88.00 oz Total Additional Charge to be Added = 180.27 oz (11.27) lbs *Factory charge in unit is 10.9 lbs Branch Box Type Units Total Indoor Unit Capacity **MXZ-8C60NA (only) to 27K 53 oz 1/4" Pipe 0.29 oz/ft + 3/8" Pipe 0.75 oz/ft + 28K- 54K 88 oz 55K - 78K 106 oz Example Total 1/4" Piping 112 ft x 0.29 = 32.48 oz Total 3/8" Piping 125 ft x 0.75 = 93.75 oz Total Indoor BTU Capacity 66,000 = 106.00 oz Total Additional Charge to be Added = 232.23 oz (14.51) lbs *Factory charge in unit is 11.4 lbs