
17
STRATA1
3 8 & 3 8 / 4 6 C O M B I
installation of vertical discharge wall terminal
with rear outlet
In order to determine the length of concentric tube required to correctly terminate a rear outlet
extended vertical discharge arrangement, the following procedure should be followed.
1. Measure wall thickness W in mm - see fig 16.
2. Mark off and cut flue tubes following guidance shown in fig 17 below.
Flue tubes should be cut to length TL in mm. Both inner and outer tubes should be cut flush with each
other, square and any burrs removed.
Where TL required is greater than 610 mm, (*850) then additional lengths (as appropriate) of 80/125
Concentric tube will be required to extend the vertical discharge wall terminal. A fall of 3˚ is required along
the length of the flue towards the appliance.
installation of vertical discharge wall terminal
with side outlet
170
W
ø80 PPS
90º Bend
ø80
Bird Mesh
ø80
PPS Tube
Exhaust
Outlet
Installed
vertically
Upwards
on same
wall aspect
Wall Bezel
Plates
Required Length
Cutting Line
measure from
this point
TL (mm)
TL = W+262mm
side outlet
170
W
ø80 PPS
90º Bend
ø80
Bird Mesh
ø80
PPS Tube
Exhaust
Outlet
Installed
vertically
Upwards
on same
wall aspect
Wall Bezel
Plates
Required Length
Cutting Line
measure from
this point
TL (mm)
TL = W+L1+260mm
Fig 14.
Fig 15.
side outlet
rear outlet
rear outlet
Fig 16.
Fig 17.
13.0 room sealed flue installations (contd)