Jetmaster Universal 500 - Page 7

Projection (mm)
50 25
25
Air Ventilation Through Chimney Chase Air Ventilation Through Top Flashing
Drawings Not To Scale
Air Vent
min 2 x 80mm diam. or equal square or rectangle shaped area
Non combustible material
Hebel Block or
12 mm Promina board
or similar under the flashing
Oversized casing cover
is necessary
150 mm
minimum
150 mm
minimum
Spigot flashing to suit
flue pipe casing
Note: All external air vents & ceiling penetrations must be bird & rodent proofed with permanently fixed screens
Drip
Line
Drip
Line
Projection (mm)
flue pipe
flue pipe casing
25
25
Fig. 12
Typical Cowl
Casing Cover
Air Gap
Top Spider
Approved
Flashing
Air
Vents
min 2 x 80mm dia
or equal square or
rectangle shaped
area
min 25mm gap between flue
pipe casing & combustible
surface
EXTERNAL REQUIREMENTS
Refer to AS/NZS2918:2001; 4.9.1
Note: All external air vents &
ceiling penetrations must be bird
& rodent proofed with permanently
fixed screens
Drawing Not To Scale
Minimum 25mm gap between
flue pipe casing
& combustible surface
Hebel Block
Promina Board or similar
Fig. 13
Fig. 14
FLUE PENETRATION
CHIMNEY CHASE AIR VENTILATION
5.TW.1G