12
Push internal pipes C far enough into
hot gas flues
B
that safety spring
E
snaps into place behind the first
resistance
D
.
Tighten screws
A
diagonally.
Note
This snapping into place prevents the
internal pipes from slipping forward
during boiler operation.
Checking the function of the safety equipment
Check the safety valves, the water level
and pressure limiters in accordance with
manufacturer's details.
Checking the diaphragm expansion vessel and system pressure
Observe the manufacturer's documentation regarding the diaphragm
expansion vessel.
Note
Carry out this test on a cold system.
Pump-controlled pressure
maintaining systems
In heating systems with automatic
pressure maintaining systems, and in
particular pump-controlled systems, with
integral degassing, we recommend the
installation of a diaphragm expansion
vessel (DEV) as individual boiler
protection.
Boiler
output
kW up to
1000
up to
2000
DEV litres 140 300
This reduces the frequency and level of
pressure fluctuations. This contributes
considerably to improved operational
reliability and a longer service life of the
system components. Damage to the
boiler or to other system components
may result if these recommendations are
not followed.
Furthermore ensure that only pump-
controlled pressure maintaining systems
that are sealed against corrosion and
protected against oxygen ingress into
the heating water are used. Otherwise
damage to the system through oxygen
corrosion can result.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 798
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