15 Weatherman function
Cleaning the primary air openings
Cleaning is necessary if log wood is frequently used
for heating. The primary air openings
1
are arranged in
the left and right at the bottom of the boiler filling cham-
ber. With log wood heating, deposits can form at these
drilled holes (Ø ~8 mm), which restrict air outlet.
►
Regularly scrape the drilled holes using the poker.
Visual inspection of the combustion grate
The stainless steel combustion grate is a wearing part
and must be regularly checked for wear. In the event of
advanced wear (visual check), replace the stainless
steel combustion grate.
Visual check of the fire clay bricks
Check the fire clay bricks in the combustion chamber
of the boiler for mechanical damage, e.g. breakage or
cracks.
Check system pressure
The water pressure in the heating system can be read
on the pressure gauge. As a rule of thumb (for buil-
dings of up to three storeys), the pressure should be 1
to 2 bar for a cold system and 1.5 to 2.5 bar for a hot
system.
It is important that the pressure remains constant at all
times. A constant fall in pressure requires the addition
of extra water and indicates a fault in the system (e.g.
a leak).
i
TIP: Make a note of the set system pressure
during initial commissioning.
Clean exhaust gas duct
The flue pipe is located between boiler and chimney.
►
Remove cover
1
in the flue gas pipe.
►
Remove combustion deposits (e.g. dust, fly ash)
from the pipe.
Check safety valve
Carry out a visual check for leaks at the valve (inspect
around outlet of dump hose). The plant operator is advi-
sed not to turn the valve cap, as the valve may no lon-
ger seal completely afterwards.
Maintenance by qualified personnel
Depending on the operating hours (in each case after
1800 hours, fixed value) or a defined duration (in
months), the control shows an indication of the ne-
cessary professional maintenance of the boiler.
Please contact your heating engineer or the
SOLARFOCUS Service Hotline Biomass
36
Operation manual
therminator II touch
