Bosch Climate 5000 Series Installation Manual page 15

Installation Manual
4. Remove tape from ends of pipe when ready to perform fl aring work.
5. Clamp fl aring block on the end of the pipe. The end of the pipe must extend
beyond the edge of the fl are form in accordance with the dimensions shown
in the Table 9.
Flaring tool
Figure 15
6. Place fl aring tool onto the fl aring block.
7. Turn the handle of the fl aring tool clockwise until the pipe is fully fl ared.
Flare the pipe in accordance with the dimensions shown in table 9.
Piping extension beyond fl are form
Outer
Tightening
diameter Tightening
Torque
of tube in.
lb ft (N•m)
(mm) lb ft (N•m)
1/4" (6.4) 11.0 (15.0) 11.8 (16.0)
3/8" (9.5) 18.4 (25.0) 19.2 (26.0)
1/2" (12.7) 25.8 (35.0) 26.6 (36.0)
5/8" (15.9) 33.2 (45.0) 34.7 (47.0)
Table 9
8. Remove the fl aring tool and fl aring block, then inspect the end of the pipe
for cracks and even fl aring.
Bosch Thermotechnology Corp. | 05.2019
A
Tube
Max.
Fig. 15, A in. (mm)
Torque
Min. Max.
0.0275 (0.7) 0.05 (1.3)
0.04 (1.0) 0.063 (1.6)
0.04 (1.0) 0.07 (1.8)
0.078 (2.0) 0.086 (2.2)
Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump | 15
Step 4: Connect pipes
Connect the copper pipes to the indoor unit first, then connect it to the outdoor
unit. You should first connect the low-pressure pipe, then the high-pressure pipe.
1. When connecting the flare nuts, apply a thin coat of refrigeration oil to the
flared ends of the pipes.
2. Align the center of the two pipes that you will connect.
Indoor unit tubing
Figure 16
3. Tighten the fl are nut as tightly as possible by hand.
4. Using a wrench, grip the nut on the unit tubing.
5. While fi rmly gripping the nut, use a torque wrench to tighten the fl are nut
according to the torque values in table 9.
Figure 17
CAUTION:

Ensure to wrap insulation around the piping. Direct contact
with the bare piping may result in burns or frostbite.
NOTICE:

Make sure the pipe is properly connected. Over tightening
may damage the bell mouth and under tightening may lead
to leakage.
Flare nut Pipe
Data subject to change