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13.6.2 Replacement of the boiler main heat exchanger
☞
INFO
Before starting with the following instructions, we recommend organising protective devices to protect the inner parts and the boiler electric box from any
accidental water leaks.
CAUTION
Disconnect the electrical power supply and close the Ngas tap upstream of the valve.
• Disconnect the fumes sensor connector 1.
• Disconnect the fan connector
• Disconnect the ignition electrode connector connected to the board.
• Drain the water of the boilers heating circuit.
• Extract the flue connection (concentric or accessory for separate flues)
• Remove the fan
• Remove the springs of the two pipes on the exchanger, pimp and hydraulic
unit
• Loosen the two lower screws "5" fastening the exchanger to the frame ("fig.
57 -")
• Loosen the two upper screws "6" fastening the exchanger to the frame ("fig.
58 -")
• Remove the exchanger
• Insert the new exchanger resting it on the lower screws "5"
• Perform the steps in reverse order to assemble it
13.6.3 Replacement of the boiler electronic board
CAUTION
Disconnect the electrical power supply and close the gas tap upstream of the valve.
• Loosen the two screws "1" and rotate the dashboard.
• Lift the cover of the electric box by releasing the catches "2".
• Loosen the screws "3". Raise the board by releasing the side catches "4".
• Remove all the electrical connectors.
84
EN
fig. 55 -
fig. 57 -
Cod. 3542B230 - Rev. 00 - 02/2022
OMNIA S HYBRID H 3.2
fig. 54 -
fig. 56 -
fig. 58 -
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