Radiant RK 100, Инструкция по эксплуатации

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MAINTENANCE INSTRUCTIONS
RK 100 - RAD - ING - MAN.INST - 1311.1 - DIGITECH CS MIAH4
59
circulation
pump
Fig. 1
primary heat
exchanger
bracket
bracket
bracket
electric fan
premix
burner unit
bracket
Fig. 2
6.6.8 Circulating pump (motor body) (fig. 1)

Switch off the power and water supply to the boiler;

Close the shut-off valves and drain the central heating circuit of the
boiler;

Unscrew the four screws securing the motor body to the impeller body;

Remove the motor body and check the condition of the washer. If
necessary, replace the washer.

Replace the circulation pump and re-assemble the components following
the above procedure in reverse order.

Switch on the electricity, water and gas supplies and fill the system with
water. Check for any leaks from the joints and bleed off any air from the
circuit. Restart the boiler.
6.6.9 Primary heat exchanger
(fig. 2)
Due to the considerable weight of the heat
exchanger, pay attention during
maintenance operations.

c
lose the shut-off valves and drain the
central heating circuit of the boiler;

Switch off the power, gas and water supply
to the boiler;

Remove the spring and then the condensate
drainpipe;

Remove the fixing springs and then the
delivery and return pipes;

Remove and dismantle the entire burner unit
(see
“6.6.1 Cleaning the main exchanger
module and combustion unit”
)
;

Remove the support brackets and pull out
the heat exchanger;

Remove the regulation sensor and the
support brackets from the old heat
exchanger. Refit them to the new one;

Replace the heat exchanger and re-
assemble the components following the
above procedure in reverse order;

Switch on the electricity, water and gas
supplies and fill the system with water.
Check for any leaks from the joints and
bleed off any air from the circuit. Restart the
boiler, making sure that there are no gas
leaks;