Fan replacement
• Disconnect the power supply and close the gas cock ahead of the valve.
• Remove the fan electrical connections.
• Undo the screws "1" and gas pipe connection "2".
• Remove the venturi "3".
1
1
fig. 53
Water pressure transducer 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 ahead of the valve.
• Drain the water from the heating circuit.
• Remove the pressure transducer connector and retaining clip "1".
• Remove the pressure transducer "2".
338
2
2
1
fig. 55
cod. 3541V480 - Rev. 00 - 04/2021
BlueHelix HiTech RRT H
fig. 54
EN