Haier H2SM- User Manual - Page 3

When connecting the cable after installing the indoor unit 1. Insert from outside the room cable into left side of the wall hole, in which the pipe has already existed. 2. Pull out the cable on the front side, and connect the cable making a loop. When connecting the cable before installing the indoor unit ƽ Insert the cable from the back side of the unit, then pull it out on the front side. ƽ Loosen the screws and insert the cable ends fully into terminal block, then tighten the screws. ƽ Pull the cable slightly to make sure the cables have been properly inserted and tightened. ƽ After the cable connection, never fail to fasten the connected cable with the wiring cover. Note When connecting the cable, confirm the terminal number of indoor and outdoor units carefully. If wiring is not correct, proper operation can not be carried out and will cause defect. Indoor unit A ı 4G0.75mm2 12 3(C) 12 Indoor unit B ı4G0.75mm2 3(C) () 1L 2N POWER { () H2SM-(9+9)HEA03/R2 H2SM-(9+12)HEA03/R2 H2SM-(9+9)HRA03/R2 H2SM-(9+12)HRA03/R2 H2SM-(9+9)HEK03/R2 H2SM-(9+12)HEK03/R2 Power cable: 3G2.5mm Outdoor unit 1. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similar qualified person. The type of connecting wire is H05RN-F or H07RN-F. 2. If the fuse on PC board is broken please change it with the type of T. 3.15A/250V. 3. The wiring method should be in line with the local wiring standard. 4. After installation, the power plug should be easily reached. 5. A breaker should be incorporated into fixed wiring. The breaker should be all-pole switch and the distance between its two contacts should be not less than 3mm. Outdoor unit  Installation of Outdoor Unit Install according to Drawing for the installation of indoor and outdoor units CAUTION ƽFor multi model , the indoor units A and B should be connected with corresponding valves A and B of outdoor exactly. Any mixed connection is forbidden.  Connection of pipes ƽ To bend a pipe, give the roundness as large as possible not to crush the pipe , and the bending radius should be 30 to 40 mm or longer. ƽ Connecting the pipe of gas side first makes working easier. ƽ The connection pipe is specialized for R410A. Half union Flare nut Forced fastening without careful centering may damage the threads and cause a leakage of gas. Spanner Torque wrench Pipe Diameter(ǿ) Fastening torque Liquid side6.35mm(1/4") 18N.m Liquid/Gas side9.52mm(3/8") 42 N.m Gas side 12.7mm(1/2") 55N.m Gas side 15.88mm(5/8") 60 N.m Be careful that matters, such as wastes of sands, etc. shall not enter the pipe. The standard pipe length is 5m. If it is over 7m, the function of the unit will be affected. If the pipe has to be lengthened, the refrigerant should be charged, according to 20 g/m. But the charge of refrigerant must be conducted by professional air conditioner engineer. Before adding additional refrigerant, perform air purging from the refrigerant pipes and indoor unit using a vacuum pump,then charge additional refrigerant. CAUTION Indoor unit B1 A1 B2 Indoor unit A2 Outdoor unit B1 Indoor unit A1 A2 Outdoor unit B2 Indoor unit Outdoor unit B A Oil trap Indoor unit ● Max.Elevation: A1max=10m A2max=10m ● In case the elevation A is more than 5m, oil trap shoud be installed every 5~7m ● Max. Length: B1max=15m B2max=15m ● In case the pipe length B is more than 7m, the refrigerant should be charged, according to 20 g/m.  Connection ƽ Use the same method on indoor unit. Loosen the screws on terminal block and insert the plugs fully into terminal block, then tighten the screws. ƽ Insert the cable according to terminal number in the same manner as the indoor unit. ƽ If wiring is not correct, proper operation can not be carried out and controller may be damaged. ƽ Fix the cable with a clamp.  Attaching Drain-Elbow ƽ If the drain-elbow is used, please attach it as figure. (Note: Only for heat pump unit.)  Purging Method:To use vacuum pump 1. Detach the service port's cap of 3-way valve, the valve rod's cap for 2-way valve and 3-way's, connect the service port into the projection of charge hose (Iow) for gaugemanifold. Then connect the projection of charge hose (center) for gaugemanifold into vacuum pump. 2. Open the handle at Iow in gaugemanifold, operate vacuum pump. If the scale- moves of gause (Iow) reach vacuum condition in a moment, check 1. again. 3