Interconnection of indoor and outdoor unit
Consider the following remarks when interconnecting the functional pipe set:
Install the functional pipe set carefully and protect it against movement. Make
sure on behalf of the construction side that no tractive forces can arise. Under
no circumstances shall the piping by modified.
The wires must be connected correctly. A wrong connection could lead to dam-
ages of the system. A wrong connection of the earthing wire could lead to seri-
ous health damage caused by electric shock. Connect the wires securely and
reliably. Check the stability of the connection. Check wire screws in case of
loosening during transport. Avoid any damage to the wiring.
Make sure that the plate of the housing and the connections are tightly closed.
This needs to be done in order to prevent mist or humidity from entering. Other-
wise this would lead to short circuits or fire.
Do not exceed the maximum torque of the connection in order to avoid leakage.
Make the connection of the refrigerant piping as mentioned below:
1. Remove the valve cover from the outdoor unit.
2. Remove the rubber plug from the valve.
3. Remove the sealing cap from the pipes.
4. Adjust the connection pipes.
5. Connect the female connector of the pipes to male connector of the unit.
6. Tighten all fittings with torque wrench and open-end spanner.
7. Obey strictly the tightening torques in the chart listed.
8. Open the gas valve and the liquid valve with an Allen key.
9. Check all mechanical joints by an electronic gas detector for leakages
(refer to further information on page 88 of this document).
10. Connect the electrical wiring between the indoor and outdoor unit and
affix them by using a cable strap, so that the connection cannot shift.
Mechanical Connectors at Pipes with Tightening torque (Nm)
¼”
14 to 18
⅜”
34 to 43
½”
49 to 61
⅝”
68 to 82
Modification of
refrigerant trans-
fer pipes is not
permitted!
First Leak-Check
at
interconnected
components!
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