Bosch Climate 5000 Series Installation Instructions Manual page 15

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 10.
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 10.
Piping extension beyond fl are form
Flare dimension (A)
Pipe
(Unit: mm/Inch)
gauge Tightening torque
mm N.m (ft. lbs)
Min.
(inch)
Ø 6.4
18-20N.m
8.4/0.33
(1/4") (13.3 - 14.8 ft. lbs)
Ø 9.5
25-26 N.m
13.2/0.52 13.5/0.53
(18.4 - 19.2 ft. lbs)
(3/8")
Ø 12.7 35-36 N.m
16.2/0.64 16.5/0.65
(1/2") (25.8-26.5 ft. lbs)
Ø 15.9
45-47 N.m
19.2/0.76 19.7/0.78
(33.2-34.7 ft. lbs)
(5/8")
Table 10
8. Remove the fl aring tool and fl aring block, then inspect the end of the pipe
for cracks and even fl aring.
Bosch Climate 5000 Series Multi Zone Ductless Air Conditioner / Heat Pump (06.2022)
A
Tube
Flare shape
Max.
8.7/0.34
90 ° ± 4
A
R0.4~0.8
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, hold the nut on the unit tubing.
5. While fi rmly holding the nut, use a torque wrench to tighten the fl are nut
according to the torque values in table 10.
Figure 17
CAUTION:

Ensure to insulate refrigerant pipe joints after leak check is
performed. 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 refrigerant leak.
Installation Instructions
Flare nut Pipe
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