Install Instructions

15
Boiler inspection and maintenance
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15.5.2 Wet cleaning (chemical cleaning)
For wet cleaning use a suitable cleaning agent depending on the degree
of build-up of dirt (soot or scale).
Use the same procedure as described for cleaning with brushes
( chapter 15.5.1, page 22).
▶ Cover control with foil to prevent entry of spray into the control.
▶ Ventilate boiler room well during cleaning.
▶ Spray flue gas vents evenly with the cleaning agent.
▶ Replace and install the burner in reverse order of removal and
disassembly.
▶ Place the heating system in operation.
▶ Heat the boiler water to a temperature of at least 122°F.
▶ Take the boiler out of operation.
▶ Allow boiler to cool.
▶ Remove burner.
▶ Brush out flue gas passages.
▶ Clean combustion chamber and bottom insulation.
▶ Continue to ventilate boiler room well.
▶ Install burner.
▶ Reattach boiler jacket.
Fig. 37 Clean out the gas passages
[1] Cleaning brush
[2] Insulation
[3] Foil
Fig. 38 Wet cleaning boiler
15.6 Cleaning the burner
▶ Remove burner ( chapter 15.5.1, page 22).
▶ Check burner rods for dirt. If necessary, clean burner as described
below.
▶ Unscrew ignition burner unit from burner.
▶ Disconnect ignition gas line from ignition burner unit.
▶ Remove ignition gas jet and blow out.
▶ Immerse burner rods in water with cleaning agent and brush off.
Fig. 39 Ignition burner
[1] Ignition cable
[2] Ignition electrode
[3] Ignition gas line
[4] Ignition gas line screw
Observe the directions for use of the cleaning agent. In
some case you may need use a different procedure from
that described here.
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Be careful not to damage the pilot orifice during
installation and cleaning.Ensure that the insulation on
the burner shield, the gas valve, and the controls do not
get wet.
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