INSTALLATION | Appliance installation
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1 Fan fault message (TK1/TK2)
2 Fan power supply (L/N/PE)
3 Stepper motor of expansion valve A (1/2/3/4)
4 Suction gas sensor S2
5 Defrost sensor TQE (OTE pin 49/GND)
6 Defrost sensor TQA (OTE pin 50/GND)
7 Fan speed (0-10 VDC/GND)
8 Earth rail
10.5 Connecting heat source system
WARNING: Burns
Work on the refrigerant circuit may be carried out
only by an authorised and suitably qualified con
-
tractor. Refrigerant can cause burns to the skin.
»
When handling refrigerant, wear appropriate
gloves and protective glasses.
The following activities on air/water heat pumps must be
carried out by OCHSNER Customer Service or by a cus-
tomer service partner authorised by OCHSNER.
►
Connecting the previously laid refrigerant lines.
►
Conducting leakage tests on the refrigerant lines.
►
Emptying the refrigerant lines.
►
Insulating the refrigerant lines around the connection
points on the indoor and outdoor units.
►
Filling the system with the correct refrigerant accord-
ing to OCHSNER guidelines.
i
Information
The system installer must ensure that noise insu-
lating pipe fixings for the refrigerant lines and the
seals on the wall outlets are correctly fitted.
10.5.1 Connecting the refrigerant lines
Material damage
Incorrect or premature opening of the pipe connec-
tions and cutting of the refrigerant lines can allow
dirt and moisture to enter the refrigerant circuit.
»
Do not open the connections on the indoor
or outdoor units until just before installing the
refrigerant lines.
»
Cut the refrigerant lines with a suitable pipe
cutter.
»
Prevent swarf from contaminating the pipe
connections and refrigerant lines.
»
Flush the refrigerant lines fully with nitrogen.
The refrigerant circuits on both the outdoor and indoor
units are filled with nitrogen at the factory.
Please note the
following when installing the refrigerant lines:
»
Use the largest possible pipe bends to avoid high
pressure losses.
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Use suitable sound-insulating pipe fixings to secure
the refrigerant lines.
»
Do not install the pipe fixings in the vicinity of bends
in the pipes.
»
Ensure that no strain can be exerted on soldered
joints.
