24
Checking the condensate drain and cleaning the siphon
A
C
B
1.
Remove retaining clip
A
and pull out
insert
B
.
2.
Clean siphon
C
and check that the
condensate can freely drain off.
3.
Fill siphon
C
with water and reas-
semble.
Note
Never twist the supply hose during
assembly.
Checking the diaphragm expansion vessel and system pressure
Note
Carry out this test on a cold system.
1.
Drain the system, or close the cap
valve on the diaphragm expansion
vessel and reduce the pressure, until
the pressure gauge indicates "0".
2.
If the pre-charge pressure of the dia-
phragm expansion vessel is lower
than the static system pressure, top
up with nitrogen until the pre-charge
pressure is raised by 0.1 to 0.2 bar.
3.
Top up your heating system with
water and vent until the filling pres-
sure of a cooled system is 0.1 to 0.2
bar higher than the pre-charge pres-
sure of the diaphragm expansion
vessel.
Permiss. operating pressure: 4 bar
Checking gas equipment for tightness at operating pressure
Danger
Escaping gas leads to a risk of
explosion.
Checking gas equipment for
tightness.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 760 GB
Summary of Contents for VITOCONTROL-S, WB2B
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