Haier 10571570 Operation Manual

Installation procedure Connection of pipe6.Thermal insulation treatmentThe thermal insulation of connection pipe should be performed at both gas sideand liquid side. In COOLING, both liquid side and gas side are in low temperature,in order to prevent dew from forming, thermal insulation should be done.The thermal insulation material at the gas side must use the material with the heatresistant temperature over 120*.The connected parts of indoor unit connection pipe should be thermal insulated.3. The additional charging amount of refrigerantThe additional charging of refrigerant (R407C) should be complied with theinstallation manual of outdoor unit. It must use measurer to quantificationallycharge. The additional charging amount must be complied with the specifiedamount.Requirements: Both excessive charging and less charging of refrigerant will cause thecompressor trouble. It must be complied with the specified amount.4.Discharging of pipe**For details, please refer to the pipe installation part in the manual of outdoor unit.5.Leakage detectionUse leakage detector or soap water to check if the connected part of the connectionpipe and the valve cap leak.For the specific max length and the max fallof connection pipe, please refer to the manualof outdoor unit.In order to guarantee the efficiency, the pipeshould be as short as possible.Daub the refrigerant oil on the joint and theflared nut.When bending the pipes, give the roundnessas large as possible, to avoid crashing the pipes.To connect the pipe, fit the center and use handto screw the nut, then use spanner to tightenthe nut, as shown in figure.Pay attention not to let alien matters, such assand, vapor get into the pipe.The connection of indoor unit pipe must beperformed by using two spanners.Joint NutSpannerSpannerFasten torque32.7~39.9 N.mPipe diameter61.8~74.5 N.mIf do not fit the center andscrew the nut hard, the screwthread may be damaged,which will cause refrigerantleakage.34Gas pipe 15.88mmLiquid pipe 9.52mm2. Dimension of connection pipe1. Connection of pipe**

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