43
PA
RT
2 CONCENTRIC 80/125
2
3
640
520
Ø125
25 –45
°
1
5
6
7
8
10
Fig. 5.2: Fitting the device and the roof duct (pitched roof)
LAS Euro B/S 002/0
Pitched roof
• Determine the point of termination
of the vertical air/flue duct and
terminal assembly.
• Install the adjustable pitched roof
tile (
1
) in position.
• Fit the adjustable hood over the
roof tile according to the roof
pitch. The adjustable hood is
suitable for roof pitches from 25°
to 35°, or 35° to 45° by
reversing.
Flat roof
• Determine the point of termination
of the vertical air/flue duct and
terminal assembly.
• Make a hole in the roof of 135
mm diameter. Secure the flat roof
collar (
1
) to the roof covering
above the hole in accordance
with the codes of practice for flat
roofs CP 144) to ensure a
watertight seal.
Pitched and flat roof
installations
• From above insert the air/flue
duct and terminal assembly (
5
)
into the adjustable roof tile
(pitched roof) or roof penetration
collar (flat roof) until it is fully
seated.
• Adjust the vertical alignment of
the air/flue duct and terminal
assembly and secure the air duct
with the fixing bracket provided.
(
6
).
• At this stage it is necessary to
prepare and fit the boiler onto the
hanging bracket – refer to the
boiler installation instructions.
• For installations where an air/flue
extension accessory will be
required. The number of air/flue
duct extensions which can be
used depends on the boiler.
Note: The joints between the flue duct
sections are of a push- fit type, with
the flue duct spigot inserted into a
socket containing a sealing ring. For
ease of installation lubricate the seal
using soap solution prior to
assembling.
670
500
Ø125
≥
125
1
5
6
7
3
3
Fig. 5.3: Fitting the device and duct to a flat roof
LAS Euro B/S 004/0_GB
INSTALLATION OF THE VERTICAL ROOF DUCT
