Haier 3U19FS1ERA Service Manual - Page 42

>_]]VbTZR\ _^UZdZ_^Vb Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installed. In accordance with the foundation drawing in fix the unit securely by means of the foundation bolts.(Prepare four sets of M8 or M10 foundation bolts, nuts and washers each which are available on the market.) It is best to screw in the foundation bolts until their length are 20mm from the foundation surface. 20 Outdoor Unit Installation Guideline Where a wall or other obstacle is in the path of outdoor unit's intake or exhaust airflow, follow the installation guidelines below. For any of the below installation pattems, the wall height on the exhaust side should be 1200mm or less. Wall facing one side More than 50 More than 300 1200 or less Side view Wall facing two sides More More than 100 than 300 More than 100 Side view More than 50 Wall facing three sides More than 150 More than 50 More than 300 Side view Limitations on the installation 1.Precautions on installation Check the strength and level of the installation ground so that unit will not cause any operating vibration or noise after installation. In accordance with the foundation drawing in fix the unit securely by means of the foundation bolts. It is best to screw in the foundation bolts unit their length are 20 mm from the foundation surface. 2.Selecting a location for installation of the indoor units The maxinum allowable length of refrigerant piping, and the maxmum allowable height difference between the outdoor and indoor units, are listed below. (The shorter the refrigerant piping, the better the performance. Connect so that the piping is as short as possible. Shortest allowable length per room is 3m) Outdoor unit capacity class Piping to each indoor unit Total length of piping between al lunits 3U19FS1ERA 25m max. 50m max. -41- 4U25HS1ERA 4U30HS1ERA 25m max. 70m max. 5U34HS1ERA 25m max. 80m max.