Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 24

Installation sequence
Installing the outdoor unit
Minimum clearances
100
Fig. 10
Air intake
A
Air discharge
B
a ■ Line entry above ground level:
250 mm
≥
Line entry below ground level:
■
450 mm
≥
Draining condensate via a soakaway
■ Allow the condensate to drain away freely without a
drain pipe into a gravel bed beneath the outdoor unit.
Or
Allow the condensate to drain away via a drain pipe
■
into a seepage layer (only for floorstanding installa-
tion): See following diagram.
Note
To ensure correct function of the condensate drain
even at low temperatures, provide a ribbon heater in
the drain pipe (accessories).
24
(cont.)
A
750
B
1000
B
D
G
Fig. 11
Outdoor unit
A
Support for floorstanding installation (accessories)
B
200
a
A
A
B
C
E
F
H