Haier AD18LS1ERA Service Manual

Also see for 3U19FS1ERA: Service manual Installation manual

Haier AD18LS1ERA Service Manual Manual pdf 66 page image

1. Drill a hole in the wall and insert the connecting pipe and wire through a PVC wall-through tubepurchased locally. The wall hole shall be with a outward down slope of at least 1/100. (SeeFigure 1)2. Before drilling check that there is no pipe or reinforcing bar just behind the drilling position.Drilling shall avoid at positions with electric wire or pipe.3. Mount the unit on a strong and horizontal building roof. If the base is not firm, it will causenoise, vibration or pipe broken and refrigerant leakage (see Figure 6).4. Support the unit firmly.5. Change the form of the connection pipe, connection wire and drain pipe so that they can gothrough the wall hole easily.5. Installation procedureWhen installing the ceiling concealed type indoor unit, a specially designed return air bellowsshall be installed, as shown in Figure 3, Figure 4.Figure 3Figure 4AInstalling building roofCeilingAir supply Air outlet ductUnitReturn airReturn air bellowsAir outlet grilleAir supplyNo obstacleswithin 1 m(0Pa) UnitReturn airReturn air bellows0.5m(0Pa)or 5m(50Pa)Each air return and supply duct should fix to the floor precast slab by using an iron stand. Useglue to seal the interface closely. Recommend the distance between the air return duct and thewall is more than 150mm.Fig 1 -65-