INSTALLER
43
Residual pressure
TAU UNIT OIL
35 B
55 B
Maximum residual pressure in flue
gas vent (*)
Pa
50
75
(*) Values referred to atmospheric pressure at sea level.
Maximum equivalent length of pipes
TAU UNIT OIL
35 B
55 B
Category
Flue Ø
(mm)
Maximum length of flue pipe (m) (*)
open
B23 - B23P
80
10
10
twin flue pipes
C63
80
10+10
10+10
concentric flue pipes
C13 - C33
80/125
6
6
(*) These length must be reduced by 3 metres for every 90° curve and by 1.5 metres for every 45° curve.
b
A check on the quality of combustion must be made
on initial start-up. Combustion quality can be affect-
ed by parameters other than the length, height and
position of the flue pipes.
b
All flue seals must be made from condensate (acid)
resistant materials.
r
TAU UNIT OIL
boilers can also be installed
in B23 open configurations using suitable piping in
compliance with applicable laws and standards.
b
Even if the flue pipes pass through combustible
walls, it is not necessary to respect a minimum
installation distance (between the flue and the
walls), since flue gas temperature is below the
maximum permitted temperature for the flue pipes
(according to EN 15035). You should nevertheless
always respect the specifications given in the tech-
nical data sheets for the materials used in the walls.
TAU UNIT OIL
r
boilers derive their comburent air
from the room in which they are installed. Suitable air
vents must therefore be provided in compliance with
applicable laws and standards.
a
Never obstruct or restrict the air vents in the room
where the appliance is installed.
