Bosch Climate 5000 SCI Series Installation Manual page 18

Refrigerant Piping Connection
Indoor unit tubing
Fig. 42.
3. Tighten the flare nut as tightly as possible by hand.
4. Using a spanner, grip the nut on the unit tubing.
5. While firmly gripping the nut, use a torque wrench to tighten the
flare nut according to the torque values in table 13.
NOTE :
Use both a spanner and a torque wrench when connecting or
disconnecting pipes to/from the unit.
Fig. 43.
CAUTION
• Ensure to wrap insulation around the piping. Direct contact with the
bare piping may result in burns or frostbite.
• Ensure the pipe is properly connected. Overtightening may damage
the bell mouth and undertightening may lead to leakage.
NOTE ON MINIMUM BEND RADIUS
Carefully bend the tubing in the middle according to the diagram below.
DO NOT bend the tubing more than 90° or more than 3 times.
Bend the pipe with thumb
Min. radius 100 mm
Fig. 44.
6. After connecting the copper pipes to the indoor unit, wrap the
power cable, signal cable and the piping together with binding tape.
18
Pipe
Flare nut
NOTE:
DO NOT intertwine signal cable with other wires. While bundling these
items together, do not intertwine or cross the signal cable with any other
wiring.
7. Thread this pipeline through the wall and connect it to the outdoor
unit.
8. Insulate all the piping, including the valves of the outdoor unit.
9. Open the stop valves of the outdoor unit to start the flow of the
refrigerant between the indoor and outdoor unit.
CAUTION
Ensure there is no refrigerant leak after completing the installation work.
If there is a refrigerant leak, ventilate the area immediately and evacuate
the system (refer to the Air Evacuation section of this manual).
Climate 5000 SCI – 6720887422 (2019/07)