Radiant RK 34/B Ekobox, Инструкция по эксплуатации

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MAINTENANCE INSTRUCTIONS
37
6.5 Maintenance operations
Before carrying out any cleaning or part
replacement operations, ALWAYS turn off
the ELECTRICITY, WATER and GAS
supplies to the boiler.
Radiant Bruciatori S.p.a. will not be held
responsible for damage to any of the
boiler’s components caused by non-
compliance with this instruction.
For all maintenance operations requiring removal of
the boiler casing, refer to the procedures described in
paragraph 6.3 “Accessing the boiler”.
Cleaning the main exchanger module and
combustion unit (see fig. 1)
•
Disconnect the electrical connections of the
electric fan.
•
Disconnect the joint and remove the pipe linking
the gas valve to the injector unit (venturi).
•
Disconnect the joint and remove the gas feed pipe
from the gas valve.
•
Un-plug the ignition electrode and flame detection
wires from the ignition control unit.
•
Unscrew the ring-nut at the bottom of the room-
sealed chamber and remove the gas valve.
•
Unscrew the nuts securing the burner unit
(consisting of a fan, manifold and burner) to the
primary heat exchanger.
•
Remove the burner unit, paying particular attention
not to remove the ceramic fibre protection from
the bottom of the heat exchanger.
•
Check that the burner is not affected by deposits,
scaling or excessive oxidation. Check that all the
holes in the burner are free;
•
Clean the electrodes carefully without altering their
positions with respect to the burner;
•
Clean the burner cylinder using a non-metal brush
and without damaging the ceramic fibre;
•
Check the integrity of the washer on the cover of
the burner;
•
Clean the heat exchanger (see fig. 2) using a
household detergent for stainless steel,
distributing the product on the spirals of the
exchanger using a brush. Do not wet the ceramic
fibre coating. Wait a few minutes then remove the
deposits using a non-metal brush. Then remove
the residues under running water;
•
Remove the pipe clip, remove the condensate
drainpipe and clean under running water.
•
Unscrew the joint to the condensate trap, remove
the trap and wash under running water.
•
With the cleaning completed, re-assemble the
components following the above procedure in
reverse order.
•
Finally, check the boiler to make sure that all gas
and exhaust joints are tight.
Fig. 1
premix burner unit
burner
ionisation
electrode
ignition
electrode
primary heat
exchanger
B
A
primary heat
exchanger
flue connection
chamber
stainless steel
pipe coil
ceramic fibre
washer
Fig. 2