Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 25

Installing the outdoor unit
Condensate drain connector
C
D Foundation
Frost protection (compacted crushed stone)
E
Drain pipe with ribbon heater (at least DN 40)
F
Ground
G
Seepage layer for removal of condensate
H
Draining condensate via waste water system
Note
To ensure correct function of the condensate drain
even at low temperatures, provide a ribbon heater in
the drain pipe (accessories).
D
Fig. 12
Outdoor unit
A
Support for floorstanding installation (accessories)
B
Floorstanding installation
Danger
Incorrect installation can lead to equipment
damage and personal injury, e.g. if the outdoor
unit falls down or falls over.
Only install the outdoor unit in accordance with
the specifications in these instructions.
Foundation for installation with support for floorstanding installation (accessories)
Provide 2 horizontal foundation strips.
■ Max. tilting angle: 2°
±
(cont.)
A
B
C
E
F
G
H
K
Condensate drain connector
C
Foundation
D
E Frost protection (compacted crushed stone)
Drain pipe with ribbon heater (at least DN 40)
F
Ground
G
Stench trap in an area free from the risk of frost
H
Drain
K
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.
Installation sequence
25