Viessmann Vitocrossal 200 Service Instructions For Contractors page 29

Further details regarding the individual steps
1. Undo four screws and from the back
remove the centre and bottom back
panels.
2. Separate hose C to the neutralising
system (if installed) from siphon B.
3. Connect drain or cleaning hose D to
the siphon and run it to the drain.
4. Clean the inside of the condensate
drain system (hose, pipe).
5. Add water to the combustion cham-
ber.
Note
The water must flow from the con-
densate drain pipe without back pres-
sure.
If necessary, clean the condensate
drain pipe again.
6. 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.
Commissioning, inspection, maintenance
7. Release and flush lower part A of
siphon B.
8. Fill lower part A of siphon B with
water and reassemble.
9. Refit the condensate drain system
and the back cover panel.
Note
The hose connection to the on-site
condensate system or to the neutral-
ising system must not be permitted to
sag; support with a pipe if neces-
sary.
(cont.)
29