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Page 13
4. Installation
Optional Backdraft Shutter Installation Through Roof
• Cut 250mm SteelFlex
™
duct length to minimum 400mm.
• Assemble by tting shutter assembly into the ducting.
• Check to ensure the aps close and open freely before assembling the bottom end of the ducting.
3200 motor
PVC Storm pipe
Cut existing ducting to
150mm to 200mm length
Attach ducting to backdraft
shutter and secure with
duct tape and clamp
Shutter System (optional)
part number
2500MMBDSSBUILDASS
Reducer
Assemble ducting to bottom
end of backdraft shutter
and secure with duct tape
and clap - see NOTE.
minimum 400mm
50mm
250mm SteelFlex
™
ducting
NOTE
Ensure the aps open upwards before assembling
ducting to bottom end of the shutter system. If
aps open downwards, the assembly is incorrect.
Figure 5: Backdraft shutter roof mount
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