Drawings Not
To Scale
1
.OD
Q
.3D
Air Ventilation Through Top Flashing
Fig
. 6
50
25
25
120mm
minimum
Drip
Line
Spigot flashing to suit
flue pipe casing
Non combustible material
Hebel Block or 12mm
Pro
matect H
board or
similar under the flashing
120mm
minimum
Oversized casing cover
is necessary
Drip
Line
Air
Vent
NOTE:
Air Vents to be min 2 x 80mm diam. or equal square or rectangle shape
area. These must be bird & rodent proofed with permanently fixed screens.
C
HIMNEY CHASE VENTILATION
Air Ventilation Through Chimney Chase
Fig.
5
F
LUE INSTALLATION
1.
Install first length of flue pipe crimped end down, inside gather collar. Rivet flue pipe in 3 places around gather collar. Place
bottom
flue spider bracket around gather flue pipe collar, secure in position by tightening up coach bolt/screw (supplied).
2.
Install second length of the flue pipe crimped end down and fix by riveting in at least 3 places around the flue pipe joint.
3.
Install first length of the flue pipe casing by positioning on installed bottom flue spider bracket crimped end up.
4.
Position flue spacer at the flue pipe joint.
5.
Repeat steps 1 - 4 to the required flue system height of 3.6m.
6.
The last length of flue pipe needs to extend past the flue pipe casing by at least 150mm or flush with the top of the casing cover
spigot
when fitted - sizing/measuring and cutting down should be carried out prior to the flue pipe casing being fitted over the flue
pip
e
.
7.
Before fitting casing cover, place the spider in opposition with the spider post facing down between the flue pipe and flue pipe
casing.
Secure spider in position. Place the casing cover over the flue pipe, press down firmly onto the spider. Check airway
around
the
casing cover is clear, then secure in position using three stainless steel rivets.
8.
Fit cowl to top of flue -
DO NOT RIVET IN POSITION
. In high wind areas, it is recommended that the cowl be secured in position
with
a stainless steel self tapping screw, this will enable the cowl to be removed for cleaning. Discuss Bird Proofing needs with
your
installer. N.B.
I
n extreme wind areas it may be necessary to consult The Fireplace Ltd or your local agent for further
technical
assistance.
9.
If flue is concealed in a chase, allow for air vents (2 x 80mm diam. or equivalent) at the highest possible point on the chimney
chase
or
alternatively, allow a min 25mm air space between the casing cover spigot and the outer casing. Refer to Figure
5
&
6
.
3000
or less
3000
More than 3000
600 min.
3000
increase as necessary
until nothing within
3000mm of flue top
Any nearby structure
increase from 1000mm
minimum until clear within
3000mm of flue top
MINIMUM
HEIGHT OF
FLUE SYSTEM
EXIT
HEIGHT