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Installation Manual
7.2 Connecting piping to indoor unit
1.
Align the center of the two pipes that you will connect. See Fig. 33.
Indoor unit tubing
Figure 33
2.
Tighten the fl are nut as tightly as possible by hand.
3.
Using a wrench, grip the nut on the unit tubing.
4.
While fi rmly gripping the nut on the unit tubing, use a torque wrench
to tighten the fl are nut according to the torque values in the Torque
Requirements table below. Loosen the fl aring nut slightly, then tighten again.
Figure 34
Torque requirements
Outer Diameter of Tube
Tightening Torque
mm (in.)
Ø 6.35 (Ø 0.25")
Ø 9.52 (Ø 0.375")
2,500 (18.4lb • ft)
Ø 12.7 ( Ø 0.5")
3,500 (25.8lb • ft)
Ø 16 ( Ø 0.63")
4,500 (33.19lb • ft)
Table 7
NOTICE: Do not use excessive torque
Excessive force can break the nut or damage the refrigerant
piping. You must not exceed torque requirements shown in
the table above.
Bosch Thermotechnology Corp. | 01.2017
Flare nut
Pipe
Max. Tightening
N•m (lb ft)
Torque N•m (lb ft)
1,500 (11lb • ft)
1,600 (11.8lb • ft)
2,600 (19.18lb • ft)
3,600 (26.55lb • ft)
4,700 (34.67lb • ft)
Bosch Climate 5000 AA Series Split Type Ductless Air Conditioner / Heat Pump | 25
7.3 Connecting tubing to outdoor unit
1.
Unscrew and remove the cover on the side of the outdoor unit. (See Fig. 35)
Figure 35
2.
Remove protective caps from ends of valves.
3.
Align fl ared pipe end with each valve, and tighten the fl are nut as tightly as
possible by hand.
4.
Using a wrench, grip the body of the valve. Do not grip the nut that seals the
service valve. (See Fig. 36)
NOTICE: Use wrench to grip main body of valve
Torque from tightening the flare nut can snap off other parts
of valve.
Figure 36
5.
While fi rmly gripping the body of the valve, use a torque wrench to tighten the
fl are nut according to the correct torque values.
6.
Loosen the fl aring nut slightly, then tighten again.
7.
Repeat Steps 3 to 6 for the remaining tube.
Valve cover
Data subject to change
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