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6. Limitations on the installation
6.1 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 x 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.
6.2 Selecting a location for installation of the indoor units
• The maxinum allowable length of refrigerant piping, and the maximum 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
3U52S2SG1FA
3U68S2SG1FA
4U70S2SH1FA
4U85S2SH1FA
Piping to each indoor unit 25m max. 25m max.
Total length of piping between all units 60m max. 70m max.
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