Ochsner AIR BASIC 109, Operating Manual/Installation Manual

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BA_AIR_BASIC_ELW_Multitower_OTE3_SW5x_CC_EN_V08.docx Page 46 of 92
5.1 Outdoor unit connection
If the appliance, the refrigerant lines, the fixing
points and the wall conduits are not properly
installed, structure-borne sound may be
transmitted to the building.
→
Ensure the refrigerant lines are secured in a
way to minimise structure-borne sound. The
system installer carrying out the work is
responsible for this.
Fit damp-proof and diffusion-proof insulation to
the refrigerant lines!
Use refrigerant pipes for the refrigeration
connection of the outdoor unit. OCHSNER
recommends using the solder-crimp fittings
supplied. If these have not been supplied with the
product, customer service will provide them when
commissioning the system.
Figure 58: View of solder-crimp fitting
The solder-crimp fittings provide a better seal
than crimps made on site.
Leak rate < 1 g/year
CAUTION
OCHSNER customer service will solder the crimp
fittings professionally during commissioning.
Tighten the screws with the following tightening
torques:
Tightening torques for
solder-crimp fittings
Pipe
Connection Torque
Liquid line
Ø1/4"~6 mm
7
/
16
UNF 20 Nm
Liquid line
Ø3/8"~10 mm
⅝ UNF 30 Nm
Hot gas line
ؽ" ~12 mm
¾ UNF 60 Nm
Hot gas line
Ø⅝" ~16 mm
⅞ UNF 70 Nm
Table 3: Tightening torques of solder-crimp fitting
Refrigerant pipe laying work will be charged
separately.
Procedure when NOT using the supplied solder-
crimp fittings
Step 1 of 3:
Undo the nuts from connections A (hot gas line)
and B (liquid line) of the refrigerant lines.
CAUTION
Ensure that no contamination (e.g. metal swarf) or
moisture enters the copper pipes. Therefore, hold
the pipe openings downwards and close them.
A
B
NOTE
NOTE