Dru G20, Installation Manual

English

I NS TAL LAT ION M ANUA L

Ø

Place the appliance on its destined location.

Ø

When leading the rectangular flue gas discharge / combustion air supply system through a floor and/or ceiling,
take the following dimensions into account; for details see section 5.4:

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350x140 mm through non combustible material;

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430x220 mm through combustible material.

Ø

Check whether the position of the spacer brackets on the appliance is suitable for the chosen rectangular (A) or
round (B) flue gas discharge / combustion air supply system (see Appendix 3, fig. 2).

!Caution

The spacer brackets are adjustable. Make sure they are adjusted correctly.

Ø

Loosen the screws of the spacer brackets (C) and turn the brackets around when a round system is used
(see Appendix 3, fig. 2).

Ø

Mount the appliance using the wall bracket and the key bolts supplied.

Ø

Use the slot holes of the wall brackets to level the appliance horizontally (see Appendix 3, fig. 1, arrow 1).

Ø

Use the adjustment bolts to level the appliance vertically (see Appendix 3, fig. 1, arrow 2).

5.4 Flue gas discharge / combustion air supply system

5.4.1 General

The appliance is of the C11/C31 type.
The appliance is connected to a combined flue gas discharge/combustion air supply system, hereafter referred
to as the concentric system.
The flue spigot of the appliance, is a rectangular, concentric version. To this you can connect a rectangular (A)
(310x100 / 205x55 mm) and/or round (B) (Ø100 / Ø150 mm) concentric system (see Appendix 3, fig. 3a).
The passage to the outside can be made with a wall terminal (see section 5.4.2) or a roof terminal
(see section 5.4.3).
If necessary, you can also use an existing chimney (see section 5.4.4).

!Caution

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Only use the rectangular and/or round concentric system supplied by DRU. This system has been tested
together with the appliance. DRU cannot guarantee a proper and safe operation of other systems and does
not accept any liability for this;

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Always use coupling pieces with corresponding seals for the connections in the rectangular system. These
are supplied with the system; see the accompanying instructions;

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Secure the coupling pieces with the self-tapping screws supplied;

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For connecting to an existing chimney you should only use the chimney kit supplied by DRU.

The concentric system is constructed from (flue spigot of) the appliance.
If structural circumstances require that the concentric system is placed first, the appliance can later be
connected with a telescopic pipe piece, provided a round concentric system is used. In that case, an adapter to
round must first be placed on the flue spigot. It is not possible to supply a telescopic pipe piece for a rectangular
concentric system.

5.4.2 Application with wall terminal

The wall terminal is a round concentric system.

5.4.2.1 Construction of concentric system with wall terminal

!Caution

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When using rectangular pipes it is only possible to end in the wall from which the appliance is suspended
(there is no bend available for the concentric system);

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When the pipes end at right angles in the appliance, you can start with rectangular pipes, but you must
change over to the round system.

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