Haier 3U19FS1ERA Service Manual - Page 46

3) Use separate thermal insulation pipes for gas and liquid refrigerant pipe. >_]]VbTZR\ _^UZdZ_^Vb Inter unit wiring Gas pipe Liquid pipe Gas pipe insulation Liquid pipe insulation Rain Be sure to Wall place a cap. If no flare cap is available, cover the flare mouth with tape to keep dirt or water out. Finishing tape Drain hose Check Flare's inner surface must be flaw-free. The pipe end must be evenly flared in a perfect circle. Make sure that the flare nut is fitted. Set exactly at the position shown below. A Flare tool for R410A Flare tooling die Clutch-type 0-0.5mm Cut exactly at right angles. Remove burrs Conventional flare tool Clutch-type(Rigid-type) Wing-nuttype(Imperial-type) 1.0-1.5mm 1.5-2.0mm 8.Cutting and Flaring work of piping Pipe cutting is carried out with a pipe cutter and burs must be removed. After inserting the flare nut, flaring work is carried out. Pipe Pipe diameter Size A (mm) A Liquid side 6.35mm(1/4") 0.8~1.5 Flare tooling die Gas side 9.52mm(3/8") 12.7mm(1/2") 1.0~1.5 1.0~1.5 Correct Incorrect Lean Damage of flare Crack Partial Too outside 9. On drainage Please install the drain hose so as to be downward slope without fail. Please don't do the drainage as shown below. It becomes high midway. The end is immersed in water It waves. Less than 5cm It gap with the ground its too small. There is the bad smell from a ditch. Please pour water in the drain pan of the indoor unit, and confirm that drainage is carried out serely to outdoor. In case that the attached drain hose is in a room, please apply heat insulation to it without fail. WARNING 1) Do not use mineral oil on flared part. 2) Prevent mineral oil from getting into the system as this would educe the lifetime of the units. 3) Never use piping which has been used for previous installations. Only use parts which are delivered with the unit. 4) Do never install a drier to this R410A unit in order to guarantee its lifetime. 5) The drying material may dissolve and damage the system. 6) Incom;ete flaring may cause refrigerant gas leakage. -45-