Ferroli BlueHelix HiTech RRT H Instructions For Use, Installation And Maintenance page 339

BlueHelix HiTech RRT H
Main exchanger replacement
Before carrying out the following instructions it is advisable to protect the room and the
A
boiler's electrical box against accidental water spillage.
Disconnect the power supply and close the gas cock
B
ahead of the valve
• Disconnect the fume sensor connector 1.
• Disconnect the fan connector
• Disconnect the connector of the ignition
electrode connected to the board.
• Drain the water from the boiler heating
circuit.
• Remove the flue connection (concentric
or accessory for separate ducts)
• Remove the fan
• Remove the clips of the two pipes on the
exchanger, pump and hydraulic unit
• Loosen the 2 bottom screws "5" securing
the exchanger to the frame (fig. 49)
• Remove the 2 top screws "6" securing
the exchanger to the frame (fig. 50)
• Remove the exchanger
EN
• Insert the new exchanger, resting it on
the bottom screws "5"
• For assembly, proceed in reverse order
fig. 46
fig. 47
cod. 3541V481 - Rev. 00 - 06/2021
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