3211.3. Outdoor Unit11.3.1. Install the Outdoor Unit• After selecting the best location, start installation according to Indoor/Outdoor Unit Installation Diagram.1. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm).2. When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt ornails.11.3.2. Connecting the PipingConnecting the Piping to Indoor UnitPlease make flare after inserting flare nut (locate at joint portionof tube assembly) onto the copper pipe.(In case of using long piping).Connect the piping• Align the center of piping and sufficiently tighten the flare nutwith fingers.• Further tighten the flare nut with torque wrench in specifiedtorque as stated in the table.Connecting the Piping to OutdoorDecide piping length and then cut by using pipe cutter. Removeburrs from cut edge. Make flare after inserting the flare nut(located at valve) onto the copper pipe.Align center of piping to valves and then tighten with torquewrench to the specified torque as stated in the table.Model A B C DRE18*** 612.5 mm 131 mm 19 mm 383 mmRE24***, RE28*** 613 mm 131 mm 16 mm 360.5 mmCAUTIONDo not over tighten, over tightening cause gas leakage.Piping size Torque1/4” (6.35 mm) [18 N m (1.8 kgf.m)]3/8” (9.52 mm) [42 N m (4.3 kgf.m)]1/2” (12.7 mm) [55 N m (5.6 kgf.m)]5/8” (15.88 mm) [65 N m (6.6 kgf.m)]3/4” (19.05 mm) [100 N m (10.2 kgf.m)]