Installation Guide

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Installation Manual Bosch Climate 5000 Series Wall Mounted Ductless Single Split Air Conditioner / Heat Pump | 21

Bosch Thermotechnology Corp. | 03.2019

Data subject to change

7 Refrigerant Piping Connection

The length of refrigerant piping will aﬀ ect the performance and energy

eﬃ ciency of the unit. Nominal eﬃ ciency is tested on units with a pipe

length of 5 meters (16.5ft). A minimum pipe run of 3 meters (9.8ft) is

required to minimize vibration & excessive noise.

Refer to the table below for speciﬁ cations on the maximum length and

drop height of piping.

Maximum length and drop height of refrigerant piping per unit model

Model Capacity (BTU/h)

Max. Equivalent

Length m (ft)

Max. Height

Variation m (ft)

R410A

Inverter

Split Air

Conditioner

< 15,000 25 (82ft) 10 (33ft)

15,000 to < 24,000 30 (98.5ft) 20 (66ft)

24,000 to < 36,000 50 (164ft) 25 (82ft)

36,000 65 (213ft) 30 (98.5ft)

Table 5

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.27 for cut

examples.

Figure 24

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 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 25

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 26.

Figure 26

Flare nut

Copper pipe

4. Remove tape from ends of pipe when ready to perform ﬂ aring work.