Ferroli BlueHelix HiTech RRT C Instructions For Use, Maintenance And Installation Manual page 338

Main exchanger replacement
Before carrying out the following instructions it is advisable to protect the room and the boil-
A
er's electrical box against accidental water spillage.
Disconnect the power supply and close the gas cock ahead
B
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 cir-
cuit.
•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
338
BlueHelix HiTech RRT C
•Insert the new exchanger, resting it on the
bottom screws "5"
•For assembly, proceed in reverse order
fig. 46
fig. 47
cod. 3541V300 - Rev. 00 - 02/2021
1
EN