Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 26

Installation sequence
Installing the outdoor unit
E
B
C
A
850
Fig. 13
Frost protection for foundations (compacted
A
crushed stone, e.g. 0 to 32/56 mm); thickness of
layer subject to local requirements and building
regulations
Foundation strip
B
C For free drainage of condensate: Gravel bed as
soakaway
Note
So that the floorstanding installation connection set
(accessories) can be used, align both lines of the
hydraulic connection set flush with and parallel to the
edge of the foundation: See previous illustration.
Foundation for installation with anti-vibration feet (accessories)
Provide 2 horizontal foundation strips.
Max. tilting angle: 2°
■
±
26
(cont.)
D
E
B
5 0
1 2
F
E
B
C
E
B
450
75
E
F
100
Conduit (min. DN 40) for draining condensate via
D
waste water system or seepage layer
Fixing points for support:
E
Use ground anchors with a tensile force of at least
2.5 kN.
Only for line entry below ground level: Hydraulic
F
connection set (accessories)
We recommend the construction of concrete founda-
tions in accordance with the following diagram. The
stated thickness of the layers represents an average
value. These values should be adjusted to suit the
local conditions. Observe the standard rules of building
engineering.
D
75