Unit installation

23
B
D
A
C
1.
Pull drain or cleaning hose C off.
2. Clean the inside of the condensate
drain system (hose, pipe).
3. Clean the neutralising system (if
installed) in accordance with the
manufacturer's instructions.
Neutralising system operating
instructions
Note
You can obtain the neutralising agent
from Viessmann quoting
part no. 9521 702.
4.
Release and flush lower part A of
siphon
B
.
5.
Fill lower part A of siphon B with
water and reassemble.
6.
Refit hose D of the neutralising sys-
tem to the siphon.
Checking the condensate drain and the neutralising system (if
installed)
Add water to the combustion chamber.
Note
The water must flow from the conden-
sate drain without back pressure.
If necessary, clean the condensate drain
again.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 907 GB