Haier AB092FDAHA User Manual - Page 10

Refrigerant piping Warning During installation, if refrigerant gas leakage occurs, ventilation measures must be taken. When refrigerant gas meets with fire, hazardous gas will be produced. After installation, make sure that there is no refrigerant leak. Refrigerant, if meeting with heaters and stoves, etc in the room, may produce hazardous gas. Allowable tube length and allowable height difference Different units have different limits. Refer to the attached manual. Pipe material and size Material Model Pipe size ( mm) Air conditioner used deoxidized phos-copper (TP2) series 072~162 model series 182~282 model Gas side Liquid side 12.70 6.35 15.88 9.52 Refill refrigerant Refer to the installation manual for the refilling of refrigerant. A special meter should be used for the filling of refrigerant and the filling must be in strict accordance with the specifications. R22:AB072~282FDAHA R407:AB072~282FDBHA Requirements: Overfilling or underfilling may lead to compressor trouble. The filling must be done in strict accordance with the specifications. Connection of refrigerant pipes Connect all refrigerant tubes before connection of the flare tube. Use two spanners for the indoor connection. Refer to the following table for the installation torque. Pipe external diameter (mm) 6.35 9.52 12.70 15.88 19.05 Torque (N-m) 11.8(1.2kgf-m) 24.5(2.5kgf-m) 49.0(5.0kgf-m) 78.4(8.0kgf-m) 98.0(10.0kgf-m) Torque increase (N-m) 13.7(1.4kgf-m) 29.4(3.0kgf-m) 53.9(5.5kgf-m) 98.0(10.0kgf-m) 117.7(12.0kgf-m) 8 Electrical wiring & Application control remote controller D 13