Dru 0063CT3681, Installation Manual

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7.3.4 Connection to an existing chimney
The appliance can be connected to an existing chimney (C91). A 100 mm diameter flexible SS pipe is placed in the
chimney for discharging flue gases. The surrounding space is used as combustion air supply. Use the DRU spacer here.
Place this spacer every three metres.
In case of an appliance connection of ø200/130 mm, 0.8 metres of concentric system must first be connected vertically.
Reduce the concentric system after the first 0.8 metres to a diameter of 150/100 mm. The concentric system of 150/100
can be connected to an existing chimney.
The following requirements apply when connecting to an existing chimney:
- Only allowed when used in combination with the special DRU chimney kit.
- The internal dimensions should be at least 150 x 150 mm.
- The vertical length has a maximum of 12 metres.
- The total horizontal pipe length may have a maximum length (see table 7-3).
- The existing chimney has to be clean.
- The existing chimney has to be tight.
For adjusting the appliance, the same conditions/instructions apply as for the concentric system described above.
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