8
Heating system inspection
Logano GB125 BE US/CA - Subject to technical modifications.
39
B
Clean the combustion chamber with a flat brush.
Remove the debris from the combustion chamber, the
hot gas flues and the flue connection.
B
Reinstall the heat exchanger baffles in their original
positions.
B
Check sealant rope on burner door. Replace damaged
or hardened sealant rope.
B
Close the burner door and secure with the two hex
bolts (tighten to approx. 90 lb ins). Tighten the hex
bolts evenly.
Fig. 41 Brushing out the combustion chamber
B
Seal the pressure testing nozzle for the combustion
chamber pressure.
Re-commissioning after cleaning with brushes
When the boiler is re-commissioned after cleaning with
brushes, proceed as follows:
B
Plug burner cable connector into burner.
B
With balanced flue operation, attach combustion air
hose to the burner.
B
Prepare the heating system for operation.
8.3.2
Wet cleaning (chemical cleaning)
When wet cleaning, use a Buderus-approved cleaning
agent appropriate for the degree of soiling (soot or scale).
Follow the same sequence as described in Chapter 8.2,
page 37 and Chapter 8.3, page 38.
B
Cover the control panel with foil to prevent spray
getting into the control panel.
B
Spray cleaning agent evenly into the heat exchanger
heater passages.
B
Close burner door and start up the heating system.
B
Heat the boiler to a temperature of at least 160 °F.
B
Shut down the heating system.
B
Brush out the heat exchanger heater.
B
Start up the heating system again (see above).
You can obtain suitable sealant rope from
your local Buderus wholesaler.
7 747 019 141-38.1RS
Follow the instructions for use of the cleaning
agent. You may need to proceed differently
from the method described here in some
circumstances.
CAUTION:
Risk of system damage from
corrosion and short-circuit!
B
When wet cleaning protect electrical
components including the manual reset
high limit (STB) from moisture and
chemicals.
