Bedienungsanleitung DRU Diablo Next (Seite 10 von 36) (Englisch)

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INSTALLATION MANUAL

5.8.2Constructionoftheconcentricsystem

Depending on the construction of the concentric system, the appliance will have to be further adjusted with

possibly a restrictor slide or air inlet guide.

See Tables 4 and 6 for determining the correct adjustment and section 'Adjustment of the appliance' for the

method of working.

The concentric system with wall or roof terminal has to comply with the following conditions:

• In appendix 2, table 4 or 5 you can find whether a concentric pipe should be connected and what the

minimum vertical length would have to be.

• Determine the permissibility of the required discharge.

When using a wallterminal, the following applies:

• The total vertical pipe length, when using a wall terminal, may have a maximum length that you can find in

Appendix 2, Table 4.

• The minimum vertical pipe length, when using a wall terminal, can be found in appendix 2, table 4.

• The total horizontal pipe length, when using a wall terminal, may have a maximum length that you can find in

Appendix 2, Table 4 (without wall terminal; see Appendix 3, fig. 4).

!Caution

When using a wall terminal, 1 bend is included as standard in the concentric system (appendix 3, fig. 4). For each

additional bend, the maximum allowed horizontal length of the concentric system is reduced. This is done as

follows:

• An additional 90° bend shortens the maximum allowed length of the concentric system by 2 metres.

• An additional 45° bend shortens the maximum allowed length of the concentric system by 1 metre.

!Caution

At least 1 metre should always be placed on the appliance vertically, unless stated otherwise in the table.

When using a roofterminal, the following applies:

• The construction of the chosen system, when using a roof terminal, must be permissible according to

Appendix 2, Table 5. (See the method of working described below)

The working method below indicates how the permissibility is determined of a concentric system when using a

roof terminal.

1) Count the number of 45° and 90° bends required

2) Count the total number of whole metres of horizontal pipe length;

3) Count the total number of metres of vertical and/or sloping pipe length (roof terminal excluded).

4) In the first 2 columns of Table 5, look for the number of bends required and the total horizontal pipe length.

5) In the top row of Table 5, look for the required total vertical and/or sloping pipe length.

6) If you end up in a box with a letter, the concentric system chosen by you is permissible.

7) Use Table 6 to determine how the appliance should be adjusted

5.8.3Placingtheconcentricsystem

!Caution

• Maintain a distance of at least 50 mm between the outside of the concentric system and the walls and /or

ceiling. If the system is built in (for instance) a cove, it should be made with non combustible material all

around it;

• Use heat-resistant insulation material when passing through combustible material;

• The rosette of the wall terminal is too small to seal the opening when passing through combustible material.

That is why you should first apply a sufficiently large heat-resistant intermediate sheet to the wall. Then, the

rosette is mounted on the intermediate sheet.

The roof terminal can end in a sloping and a flat roof.

The roof terminal can be supplied with a glue plate for a flat roof or with a universally adaptable tile for a sloping

roof.

!Caution

Some heat-resistant insulation materials contain volatile components that will spread an unpleasant smell during

a longer period; these are not suitable.

10

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