Connections On The Heating Water And Dhw Sides; Dhw Circulation Connection (Potable Water); Filling The Trap With Water - Viessmann B2TF Installation And Service Instructions Manual

Connections on the heating water and DHW sides

A B
E
D
C
B
A
Fig. 7 Shown with connection sets for surface
mounting (accessories)
Heating flow R
A ¾
DHW R
B ½
DHW circulation R
C ½

DHW circulation connection (potable water)

DHW circulation connection with DHW circulation
pump connection set (accessories)

Filling the trap with water

Note
If there is a risk of frost, only fill the trap just before
commissioning.
Fig. 8
C D E
(separate accessories)
A
B
C
D
E
Cold water R
D ½
Heating return R
E ¾
Separate installation instructions
Pour at least 0.3 l of water into the flue gas connection.
Danger
During commissioning, flue gas may escape
from the condensate drain.
Always fill the trap with water before commis-
sioning.
Installation sequence
17