Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 27

Installing the outdoor unit
A
850
Fig. 14
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.
(cont.)
E
B
B
C
F
B
C
B
620
F
Conduit (min. DN 40) for draining condensate via
D
waste water system or seepage layer
Anti-vibration feet (accessories):
E
Align the anti-vibration feet centrally on the founda-
tion.
Only for line entry below ground level: Hydraulic
F
connection set (accessories)
Installation sequence
D
E
27