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Regular maintenance Cleaning and maintenance
Check that the ash box seal on the boiler is intact and
replace it if necessary.
Fig. 2-9: Seal
Attaching the ash box to the boiler
Open the flap on the ash box.
Push the ash box over the connection on the boiler and
connect it to the boiler with the locking lever.
2.4.3 Check pressure of the heating
system
Checking the heating system's water pressure
In buildings with up to three storeys, the optimum
water pressure in a cold heating system is between 1
and 2 bar. For a warm heating system, the optimum
water pressure is between 1.5 and 2.5 bar.
Fig. 2-10: Pressure gauge
If the water pressure is too low, fill the cold
heating system to approx. 2 bar. Do not fill to a
higher pressure, because water expands as the
temperature rises and the water pressure also rises in
heating mode. The safety valve triggers at approx. 2.8
bar.
If the water pressure drops several times a year,
contact a heating professional. When refilling
water in the heating system, the same water as used
during initial filling should be used whenever possible
(e.g. treated water).
2.4.4 Establish operational readiness
Switching on the boiler
Switch the boiler back on using the on / off
switch .
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