Placing The Chimney Breast - Dru Metro 100 Tunnel Installationsanleitung

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Apply suffi cient clamps, so that the weight of the pipes does not rest on the appliance.
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Determine the remaining length of the roof terminal.
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Make sure the roof terminal has the right dimensions.
!Caution Make sure that the right insertion length is maintained.
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Connect the roof terminal to the concentric pipes.
!Caution - Make sure that the universal tile fi ts well with the surrounding tiles;
- Make sure that the adhesive plate fi ts well onto the fl at roof.
6.5.4 Connection of existing chimney
It is possible to connect the appliance to an existing channel.
A fl exible SS pipe is placed in the chimney for discharging fl ue gases. The surrounding space is used to supply com-
bustion air.
The following requirements apply when connecting to an existing chimney:
- only allowed when used in combination with the special DRU chimney kit. The installation manual is also supplied;
- the dimensions should be at least 150 x 150 mm;
- the vertical length has a maximum of 12 meters;
- the horizontal length has a maximum of 3 meters;
- the existing chimney has to be clean;
- the existing chimney has to be tight.
If the appliance is installed into an existing chimney by means of a chimney kit, there may be a slight loss in heat
output.
For setting the appliance, the same conditions/instructions apply as for the concentric system described above.

6.6 Placing the chimney breast

The appliance is designed to be mounted tightly in a new chimney breast.
In order to provide proper heat discharge, there should be suffi cient space around the appliance.
The chimney breast should be ventilated suffi ciently by means of ventilation holes.
Caution - Use non combustible and heat-resistant materials for the chimney breast, including the top of the chimney breast,
the material in the chimney breast and the back wall of the chimney breast;
- Make sure that the appliance is not carrying the weight of the chimney breast when using stone-like materials;
- The ventilation holes - which should be mounted as high as possible - should have a combined passage of at least
200 cm
!Caution When placing the chimney breast, you should take the following into account (see fi g. 2):
- the location of the control box (K): it should be placed with a distance of 850 mm to the left or to the right of the ap-
pliance - as low as possible;
- the measurements of the control box; see Placing the Control Box section 6.7;
- the location of the ventilation holes (V);
- measurement of the glass window, so it can be placed/removed after placing the chimney breast;
- the protection of the gas control and the pipes against cement and plaster.
!Tip You should preferably apply the ventilation holes on both sides of the chimney breast. You can use DRU ventilation
elements.
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Check whether the concentric system is placed correctly.
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Check the fi xture of the clip binding with self-tapping screws on places that cannot be reached later on.
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Maintain suffi cient space around the appliance in the chimney breast, so the heat can escape:
- minimum internal height: 1350 mm;
- minimum internal width: 1300 mm.
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Do not apply plaster on or over the fl anges (see fi g. 2, maximum plaster line M), because:
- the heat of the appliance could cause cracks;
- it will no longer be possible to remove/place the glass window.
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When using stone-like ma terials and/or plaster fi nishing, the chimney breast should dry for at least 6 weeks before it
is taken into operation, in order to prevent cracks.
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M E T R O 100 - I N S TA L L AT I O N M A N UA L
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