Instructions / Assembly

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Bosch Climate 5000 AA Series Inverter Multi Split-Type Air Conditioner/ Heat Pump Installation Manual
07.2017 | Bosch Thermotechnology Corp.Data subject to change
7 Refrigerant piping connection
WARNING:
 All field piping must be completed by a licensed technician
and must comply with the local and national regulations.
 When the air conditioner is installed in a small room,
measures must be taken to prevent the refrigerant
concentration in the room from exceeding the safety limit in
the event of refrigerant leakage. If the refrigerant leaks and its
concentration exceeds its proper limit, hazards due to lack of
oxygen may result.
 When installing the refrigeration system, ensure that air,
dust, moisture or foreign substances do not enter the
refrigerant circuit. Contamination in the system may cause
poor operating capacity, high pressure in the refrigeration
cycle, explosion or injury.
 Ventilate the area immediately if there is refrigerant leakage
during the installation. Leaked refrigerant gas is both toxic
and flammable. Ensure there is no refrigerant leakage after
completing the installation work.
7.1 Refrigerant Piping Connection Instructions
NOTICE:
 The branching pipe must be installed horizontally. An angle of
more than 10° may cause malfunction.
 DO NOT install the connecting pipe until both indoor and
outdoor units have been installed.
 Insulate both the gas and liquid piping to prevent water
leakage.
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.
NOTICE:
 DO NOT deform pipe while cutting. Be extra careful not to
damage, dent, or deform the pipe while cutting. This will
drastically reduce the heating efficiency of the unit.
3. Make sure that the pipe is cut at a perfect 90° angle. Refer to Fig.12 for cut
examples.
F
Oblique Rough Warped
90°
igure 12
Step 2: Remove burrs
Burrs can aff ect the air-tight seal of 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.
Pipe
Reamer
Point down
Figure 13