14
A
B
D
E
E
D
B
A
A B
D E
C
C
C
Fig. 7
Shown with connection sets for finished walls
(accessories)
A
Heating flow R
¾
B
DHW R
½
C
DHW circulation R
½
(separate accessories)
D
Cold water R
½
E
Heating return R
¾
Connection on the DHW side
The DHW expansion vessel, available as an acces-
sory, is installed in the cold water supply inside the
boiler.
Separate installation instructions
Condensate connection
M
L
>200
Fig. 8
1.
Route condensate hose
M
to the back (drain in
wall
G
) or to side aperture
H
(see page 9).
Note
Pull the condensate hose far enough out of the
boiler so that no unnecessary bends are created
inside the boiler.
2.
Route condensate hose
M
as a U-bend and con-
nect with a constant fall and a pipe vent to the pub-
lic sewage system or to a neutralising system.
If necessary, connect to an on-site trap. Ensure
this connection is secure.
Note
Do
not
connect the DHW cylinder safety valve to
hose
L
. Do
not
change the position of hose
L
(used for ventilation).
Installing the boiler
Connections on the heating water and DHW side
5789 302 GB
Installation
Summary of Contents for B2TB
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