Connecting Piping To Indoor Unit - Bosch Climate 5000 Series Installation Manual

2 0 | Bosch Climate 5000 Series Four Way Cassette Ductless Single Split Air Conditioner / Heat Pump
Step 4: Connect pipes
When connecting refrigerant pipes, be careful not to use excessive torque or to
deform the piping in any way. You should fi rst connect the low-pressure (suction)
pipe, then the high-pressure pipe (liquid line).
Minimum Bend Radius
When bending connective refrigerant piping, the minimum bending
radius is 10cm (4in). See Figure 31.
Radius
Figure 31
NOTICE: EQUIPMENT DAMAGE
 Make sure that no oil remains on plastic parts of the
decoration panel (accessories sold separately). Oil may
cause degradation and damage to plastic parts.
Data subject to change
≥10cm (4in)

8.2 Connecting Piping to Indoor Unit

1. Align the center of the two pipes that you will connect. See Figure 32.
Indoor unit tubing
Figure 32
2. Tighten the fl are nut as tightly as possible by hand.
3. Using a wrench, grip the nut on the unit tubing.
4. While fi rmly gripping the nut on the unit tubing, use a torque wrench
to tighten the fl are nut according to the torque values in the Torque
Requirements Table 7. Loosen the fl aring nut slightly, then tighten again.
Figure 33
Torque requirements
Flare dimension (B)
Pipe Tightening
Gauge torque
Min.
18-20N.m
Ø 6.4 8.4/0.33
(183-204kgf.cm)
25-26 N.m
Ø 9.5 13.2/0.52 13.5/0.53
(255-265 kgf.cm)
35-36 N.m
Ø 12.7 16.2/0.64 16.5/0.65
(357-367 kgf.cm)
45-47 N.m
Ø 15.9 19.2/0.76 19.7/0.78
(459-480 kgf.cm)
Table 7
NOTICE: DO NOT USE EXCESSIVE TORQUE
 Excessive force can break the nut or damage the refrigerant
piping. You must not exceed torque requirements shown in
the table above.
Installation Manual
Flare nut Pipe
(mm/inch)
Flare shape
Max.
8.7/0.34
90 ° ± 4
B
R0.4~0.8
04.2019 | Bosch Thermotechnology Corp.