Ferroli BLUEHELIX HITECH RRT K 50 Instructions For Use, Installation & Maintenance page 327

BLUEHELIX HITECH RRT K 50
For B33 type installations
Intake from boiler room via concentric duct (that encloses the exhaust) and evacuation via a com-
mon natural draft flue.
IMPORTANT - THE ROOM MUST BE HAVE A SPECIAL
B
VENTILATION DEVICE
The fan is located upstream of the combustion circuit.
• For temperatures and fume flow rates, re-
fer to "Technical data table" on page 351
For B23 type installations
Intake directly from the place of boiler installation and fume evacuation through approved and
marked ducts.
The fan is located upstream of the combustion circuit.
• For temperatures and fume flow rates, re-
fer to "Technical data table" on page 351
EN
cod. 3541Z783 - Rev 00 - 03/2024
min 0,6 m
max 4 m
5 cm
B
33
fig. 44
B
23
fig. 45
327