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10 Inspection and maintenance
10 Inspection and maintenance
10.1 General
10.2 Combustion check of the boiler
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The boiler must be inspected once a year and serviced/cleaned when
necessary.
The annual inspection of the boiler includes:
combustion check of the boiler (the fan draws in the combustion
air through the venturi. Clean the fan, venturi and burner if there
are irregularities), Check the combustion air filter if fitted, replace
as necessary;
examination of venting systems;
checking that the flow of combustion and ventilation air is not
obstructed;
cleaning the trap;
checking the ignition electrode;
leakage check (water, flue gas and gas);
water pressure check;
low water cut-off (LWCO) safety device check (if installed);
checking that the boiler room is kept clear of flammable liquids and
combustible materials.
Always disconnect the main power supply and close the main gas
cock before working on the boiler.
Electrical Shock Hazard
Please label all wires prior to disconnecting when servicing this boiler.
Wiring errors can cause improper operation and dangerous operation.
Verify boiler operation after service.
Make sure that all parts are properly reassembled and resealed after
inspection and maintenance.
Combustion is checked by measuring the O
flue gas discharge duct. To do this, heat the boiler to a water
temperature of approx. 158°F (70°C). The measurements must meet
the values set in Table 17. The flue gas temperature can also be
measured at the measuring point in the flue gas discharge duct. If the
flue gas temperature exceeds the return temperature by more than
86°F (30°C), this can indicate that the heat exchanger is dirty. If these
checks show that combustion in the boiler or heat transmission is no
longer optimum, corrective maintenance must be carried out in
accordance with the instructions in Sections 10.2.1 to 10.2.4.
C230 ECO-A
/CO
percentage in the
2
2
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