Checking The Water Quality; Cleaning And Reconnecting The Condensate Drain System; Checking The Installation Room Vent; Adjusting The Burner - Viessmann Vitocrossal 300 Service Instructions Manual

Commissioning, inspection, maintenance

Checking the water quality

Enter the amount of top-up water and the total hard-
ness of the feed and boiler water into the table in the
appendix on page 24.
For water quality requirements, see page 22.

Cleaning and reconnecting the condensate drain system

The condensate drain, trap, neutralising system and all
hoses and pipes between them are part of the conden-
sate drain system.
A
B
C
D
Fig. 9
1. Disconnect drain or cleaning hose
2. Clean condensate drain
using a plastic brush.
3. Undo and flush lower part
the inlet connector of siphon
4. Secure siphon on condensate drain
B
seal in if required.
5. Fill lower section of the siphon with water and
E
refit.
Note
If the siphon is not filled with water, flue gas can
escape.

Checking the installation room vent

Adjusting the burner

Observe the burner manufacturer's instructions.
20
E
.
C
again from the inside
A
of siphon . Clean
E B
with a brush.
B
and
A
The total hardness of the feed and top-up water must
not exceed the standard values specified by VDI 2035
(see page 22).
The pH value should be between 8.2 and 9.5.
Note
Clean the inside of the condensate drain pipe at least
once a year.
6. Clean the inside of the pipes in the condensate
drain system and the neutralising system.
Neutralising system operating instructions
7. Connect the inlet of the neutralising system to trap
using pipe (and seal in if necessary). Ensure
B D
the condensate drain is routed with a fall so that it
can drain freely.