Ferroli BlueHelix HiTech RRT C Instructions For Use, Installation & Maintenance page 41

BlueHelix HiTech RRT C
Main exchanger replacement
Before carrying out the following instructions it is advisable to protect the room and the boiler's electrical box
A
against accidental water spillage.
B
Disconnect the power supply and close the gas cock 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 acces-
sory for separate ducts)
• Remove the fan
• Remove the clips of the two pipes on the exchan-
ger, pump and hydraulic unit
• Loosen the 2 bottom screws "5" securing the ex-
changer to the frame (fig. 52)
• Remove the 2 top screws "6" securing the ex-
changer to the frame (fig. 53)
• Remove the exchanger
• Insert the new exchanger, resting it on the bottom
screws "5"
EN
• For assembly, proceed in reverse order
fig. 49
fig. 50
cod. 3541V691 - Rev. 00 - 04/2022
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