Instruction manual

25
Instructions for the installer
3.16 - FLUE OUTLET INSTALLATION
The flue system must be installed in accordance with the
local and national Standards.
.
We recommend using only original UNICAL
flue outlet systems.
Damages caused by installation errors and for
non-observance of the instructions given by
the manufacturer will invalidate all the
supplier’s contractual or extra contractual
responsibilities.
If the boiler has to be replaced ALWAYS replace the flue
outlet system.
The boiler has been approved for the following flue
configurations:
C13 oiler designed for connection to horizontal inlet and out-
let terminals, which admit fresh air to the burner and
discharge the products of combustion to the outside
through concentric or twin ducts.
The minimum distance between the inlet air duct and
the flue outlet duct must be of 250 mm and both terminals
must be positioned within a 500 mm square section.
C33 Boiler designed for connection to vertical inlet and out-
let terminals, which admit fresh air to the burner and
discharge the products of combustion to the outside
through concentric or twin ducts.
The minimum distance between the air inlet duct and
the flue gas outlet duct must be of 250 mm and moreover
both terminals must be positioned within a 500 mm
square area.
C43 Boiler designed for connection to collective flue systems
including two ducts, one for the air inlet and the other for
the discharge of products of combustion through con-
centric or twin ducts.
C53 Boiler with separate air inlet and products outlet. These
ducts can discharge into areas with different pressure.
The two terminals must not be fitted on to two opposite
walls.
C83 Boiler designed for connection to a terminal for the in-
take of combustion air and to an individual or collective
chimney for the discharge of the products of combus-
tion.
The chimney must comply to the current regulations.
B23 Boiler designed to be connected to an open flue which
will terminate vertically through the roof. The combustion
air is withdrawn directly from the room where the boiler
is installed.
WARNING: for this type of connection the room must
comply with the same installation regulations valid
for open chimney boilers.
The chimney must comply to the current regulations.