Viessmann Vitocal 222-S Installation And Service Instructions For Contractors page 25

Connecting the refrigerant lines
Insulation against noise and vibrations for line entry above ground level
Fig. 22
Pipe bends for vibration compensation
A
B Pipe clips with EPDM lining
Observe the following during installation:
■ Wall outlet:
No wall outlet where load bearing sections, lintels,
–
damp proofing elements (e.g. vapour barriers), etc.
are located.
– No structure-borne noise transmission, i.e. avoid
contact between metal (refrigerant line) and the
building structure.
Routing the cables and lines:
■
Route cables and refrigerant lines separately.
–
Route the refrigerant lines with pipe bends. This
–
reduces the transmission of vibrations to the pipe
wall.
– Mount pipe clips with soft elastic lining (EPDM)
directly downstream of the pipe bends.
(cont.)
Line entry, e.g. KG conduit with thermal insulation
C
D Indoor/outdoor unit bus cable and outdoor unit
power cable
■ Securing the lines:
– Secure the lines using only pipe clips with soft
elastic insulating lining (EPDM).
Only mount pipe clips on components with a mass
–
per unit area
– Do not install the lines on partition walls or ceilings
to rooms that require a low noise level (e.g. bed-
rooms).
Insulate all lines.
■
Installation sequence
2
250 kg/m .
≥
A
B
C
D
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