Viessmann Vitoladens 300-W Installation And Service Instructions For Contractors page 33

Checking the condensate drain and cleaning the...
A B C
Fig. 25
1. Remove retaining clip
If required, push insert
2. Clean trap and fill it with water.
B
!
Please note
During commissioning, flue gas may escape
from the trap.
Fill the trap with water before commission-
ing.
Checking the oil supply
Check lines and connections for tightness and dam-
age. Replace if necessary.
Checking the vacuum in the oil line
A
Fig. 26
and trap .
A B
C upwards.
Commissioning, inspection, maintenance
(cont.)
3. Check at trap that the condensate can drain
B
freely.
4. Mount trap and secure with retaining clip
B
Note
Never twist the inlet hose during assembly. Route
the drain hose without any bends and with a con-
stant fall.
1. Screw in the vacuum gauge (measuring range 0 to
1 bar/0 to 0.1 MPa) at test port "V"
Note
Only seal in the vacuum gauges with copper or
aluminium gaskets or with O-rings. Never use seal-
ing tape.
2. Start the boiler.
3. Set the lower heating output (see page).
.
A
.
A
33