
23
Bell
fi res
Installation instructions
Figure 7: Vertical roof-mounted outlet with bend
(*) : (Y
1
+ Y
2
) : X > 2 : 1
(Vertical to horizontal ratio (or 45° upwards) is always at least 2 to 1)
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
VENT INSTALLATION
Item descriptions:
see Vent Installation
Assemble restriction plate:
Appliance:
Distance Y
1
(*)
Distance X (*) Distance Y
1
+ Y
2
(*)
Concentric connection
(min.-max.)
(min.-max.)
(min.-max.)
on appliance is Ø5” - Ø8”
Derby Large
36” - 396”
0” - 108”
36” - 396”
Width: B = 40 mm
Tunnel 3
(1.0 - 11.0 m)
(1.0 - 3.0 m)
(1.0 - 11.0 m)