INSTALLATION INSTRUCTIONS
54
Modulation circuit board
(see fig. 1-2)
•
Open the control panel (see 6.3 “Accessing the
boiler”);
•
Disconnect all the connectors, unscrew the four fixing
screws and remove the modulation circuit board;
•
Replace the circuit board and re-assemble the
components following the above procedure in
reverse order;
•
Switch on the electricity, water and gas supplies
and regulate the boiler
(see 5.4 “Gas data”)
;
When replacing the modulation circuit board,
it’s necessary to set parameter according to
the boiler model (see 5.3”
Setting the
parameters
’).
modulation circuit board
Fig. 1
Fig. 2
modulation circuit board
modulation circuit board
Fig. 1
Fig. 2
modulation circuit board
Summary of Contents for RKA 34
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