Installation Instructions

39
Cleaning the heat exchanger
A
1.
!
Please note
Scratches on parts that are in
contact with flue gas can lead
to corrosion.
Never use brushes to clean
the heat exchanger.
Use a vacuum cleaner to remove res-
idues from heat exchanger
A
inside
the combustion chamber.
2. If required, spray slightly acidic,
chloride-free cleaning agents based
on phosphoric acid onto heat
exchanger
A
and let the solution
soak in for at least 20 min.
3.
Thoroughly flush heat exchanger A
with water.
Checking the condensate drain and cleaning the siphon
B
A
1.
Pull siphon A upwards out of the
drain connection.
2.
Detach supply hose B from siphon
A
.
3.
Clean siphon A.
4.
Reconnect supply hose B.
5.
Refit siphon A to the drain connec-
tion.
6.
Fill siphon A with water by pouring
about 0.3 l of water into the combus-
tion chamber.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5609 059 GB
Service