11
Checking all connections and the sensor well on the heating
water side for leaks
Danger
There is a risk of injury when
working on pressurised compo-
nents.
Only open the connections on the
heating water side after the boiler
has been depressurised.
Only drain the boiler with a suc-
tion pump when the boiler air vent
valve is open.
B
A
1.
Remove cap
A
from the back of the
boiler.
2.
Check sensor well
B
for leaks.
3.
Fit cap
A
.
Checking the function of the safety equipment
Check the safety valves, water level lim-
iter and pressure limiter in accordance
with manufacturer's details.
Checking the diaphragm expansion vessel and system pressure
Note
Observe the diaphragm expansion ves-
sel manufacturer's instructions.
Carry out this test on a cold system.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 909 GB
Summary of Contents for Vitocrossal 300 CT3 SERIES
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