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Indoor
During the drilling operation make sure that all debris falling outside of the property does
not fall anywhere that may cause a danger to persons or property, particularly is installing on
the upper floors of a building. When the drill is less than 50mm from the outside, reduce
drilling speed and pressure to reduce risk of large amounts of breakthrough debris. If
accessible, the drilling can re-commence from outside of the wall to give a very accurate and
clean finish to the outside wall edges.
If the wall is not hard or strong enough, reinforce it by other methods such as a metal wall plate
etc.
Warning: Any resultant damage due to improper installation and operation is not the
responsibility of the manufacturer. Operation and installation according to instruction manual is
therefore essential to avoid any unnecessary damage to persons or property.
3.3.2 Exhaust Air Duct Spring and Exhaust Cover Assembly
Drill the hole accurately, clean out and then put exhaust air duct inside the hole. Finish to the
assembly drawing as follows (Figure 7)
1. Wall 2. Spring retainer 3. Exhaust Air Duct. 4. Exhaust Air Duct Cover
1. The length of exhaust air duct should be 5mm less than the wall thickness. Cut off the
surplus as required.
2. Use a hammer to knock the exhaust air duct into wall if required (Figure 8)
Fig6
Fig 7
- 8 -
Outdoor
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