Evacuation system
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6.3 Exhaust duct
• Only rigid or flexible metal duct should be used for exhausting.
• Plastic ducting is not to be used.
• Recommended material for exhaust is galvanised steel.
• The duct is not to be assembled with screws of other fastening means that extend into the
duct and catch lint.
• The exhaust air should not be vented into a wall, a ceiling, or a concealed space of building.
• The exhaust duct must lead clear of the building as condensation may cause frost damage
to the building.
• The exhaust duct must lead to the outdoors.
• The exhaust duct must be placed in such a way that it is protected on the outside.
• The exhaust duct must be smooth on the inside (low air resistance).
• The exhaust duct must have gentle bends.
• The exhaust duct must not be a shared duct between machines and appliances using gas or
other fuels as their energy source.
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