Installation Manual Bosch Climate 5000 Series Ducted Type (Medium & High Static) Air Conditioner / Heat Pump | 23
Bosch Thermotechnology Corp. | 05.2019
Data subject to change
7 Refrigerant Piping Connection
7.1 Connection Instructions – Refrigerant Piping
Step 1: Cut pipes
When preparing refrigerant pipes, take extra care to cut and fl are them properly.
This will ensure effi cient operation and minimize the need for future maintenance.
1. Measure the distance between the indoor and outdoor units.
2. Using a pipe cutter, cut the pipe a little longer than the measured distance.
3. Make sure that the pipe is cut at a perfect 90° angle. Refer to Fig.47 for cut
examples.
Figure 47
Oblique Rough Warped
90°
NOTICE:
Be extra careful not to damage, kink, or deform the pipe
while cutting. This will drastically reduce the heating
efficiency of the unit.
Step 2: Remove burrs
Burrs can aff ect the air-tight seal of the refrigerant piping connection. They must be
completely removed.
1. Hold the pipe at a downward angle to prevent burrs from falling into the
pipe.
2. Using a reamer or deburring tool, remove all burrs from the cut section of
the pipe.
Figure 48
Pipe
Reamer
Point down
Step 3: Flare pipe ends
Proper fl aring is essential to achieve an airtight seal.
1. After removing burrs from cut pipe, seal the ends with a piece of tape to
prevent foreign materials from entering the pipe.
2. Sheath the pipe with insulating material.
3. Place fl are nuts on both ends of pipe. Make sure they are facing in the
proper direction, because you can’t put them on or change their direction
after fl aring. See Figure 49.
Figure 49
Flare nut
Copper pipe
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 8.
Figure 50
Piping extension beyond fl are form
Outer diameter
of tube mm (in.)
A mm (in.)
Min. Max.
Ø 6.35 (Ø 0.25”) 0.7 (0.0275”) 1.3 (0.05”)
Ø 9.52 (Ø 0.375”) 1.0 (0.04”) 1.6 (0.063”)
Ø 12.7 (Ø 0.5”) 1.0 (0.04”) 1.8 (0.07”)
Ø 16 (Ø 0.63”) 2.0 (0.078”) 2.2 (0.086”)
Table 8
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