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

Compact heat pump, split version
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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
25

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