Haier AU42NALEAA Service Manual - Page 68

>a__WcU[S^ a`V[e[a`Wc Refrigerant piping (As for outdoor piping, please refer to installation Manual of outdoor unit.) Outdoor is precharged with refrigerant. Be sure to see the Fig.1, when connecting and removing piping from unit. For the size of the flare nut, please refer to Table 1. Apply refrigerant oil at both inside and outsid of lflare nut. Tighten it band tight 3-4 turns then tighten it. Use torque specified in Table 1. (Too much force may damage flare nut, causing gas leakage). Check piping joints for gas leakage. Insulate piping as shown in Fig. below. Cover joint of gas piping and insulator 7 with seal. Table 1 Apple refrigerant oil Medium size seal pad 11 (accessory) (Cover the piping joint with seal pad.) Torque spanner Clamp 3 Pipe Tighten size torque A(mm) 6.35 1420~1720N.cm (144~176kgf.cm) 8.3~8.7 9.52 3270~3990N.cm (333~407kgf.cm) 12.0~12.4 Flare shape R0.4 ~ 0.8 90 0.5 A 45 2 spanner Piping joing Flare nut Insulator (accessory8) (For liquid pipe) Insulator (accessory7) Gas pipe (For gas pipe) Liquid pipe 15.88 6180~7540N.cm (630~770kgf.cm) 18.6~19.0 19.05 9720~11860N.cm (990~1210kgf.cm) 22.9~23.3 Installation of water drainage pipe (1) Install water drainage pipe Pipe dia, shall be equal or larger than that of unit piping.(pipe of polyethylent; size: 25mm; O.D:32mm) Drain pipe should be short, with a downward slope at least 1/100 to prevent air bag from happening. If downward slope can't be made, take other measures to lift it up. Keep a distance of 1-1.5m between suspending brackets, to make water hose straight. 1-1.5m Slope over 1/100 Use the self-provided stiff pipe and clamp 1 with unit. Insert water pipe into water plug until it reaches the white tape. Tighten the clip until head of the screw is less than 4mm from hose. Wind the drain hose to the clip using seal pad 9 . Insulate drain hose in the room. Large size seal pad 10 Clamp (accessory) Clamp (accessory) Tape (White) Self-provided stiff pipe Installation height shall be less than 280mm. There should be a right angle with unit, 300mm from unit. 4mm below 300mm below 1~1.5m Suspending bracket Drain hose (accessory) drain water lifting pipe Self-provided stiff pipe (accessory) (Note) Clamp (accessory) The slope of water drain hose (1) shall be within 75mm, don't apply too much force on it. If several water hoses join together, do as per following proceedures. Connect water hoses with a T joint. Over 100 220 280 below 500 below 75 below 500 below Specifieations of the water hoses shall meet the requirements for the unit running. -68-