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Page 13
4. Installation
Optional Back Draft Shutter Installation Through Roof
• Cut 250mm exible duct length to approximately 150mm to 200mm.
• 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 back draft
shutter and secure with
duct tape and clamp
Shutter System
Reducer
Assemble ducting to bottom
end of back draft shutter
and secure with duct tape
and clap - see NOTE.
150mm to 200mm
250mm exible 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.
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