Dru Maestro 60/2 Tall RCH, Installation Manual

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I nst allation manual
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7.3 Concentric system
7.3.1 General
The appliance is connected to a flue gas discharge / combustion air supply system delivered by DRU, hereafter referred to
as the concentric system. DRU has different concentric systems in its range.
In the case of a concentric system, the inner tube is used as flue gas discharge. The combustion air is supplied by the
outer tube. As a result, the latter always has a relatively low temperature. For the maximum temperature of the outer
tube, see the technical data in table 4-1. The concentric system has been tested in combination with the appliance. Other
concentric systems are not permitted.
See the table below for the different concentric systems of DRU and their application:
System
DRU LAS AG-I 150/100
DRU LAS ES-I 150/100
DRU LAS ES-I 200/130
DRU LAS ES-E 200/150/100
DRU PV-I 100/60
Permitted for
this appliance.
Yes
Yes
Yes
Yes
Yes
Remarks
Alu-galva tubes for use inside the building*.
Diameter Ø150/100 mm.
Cannot be combined with the SS systems.
SS tubes for use inside the building*.
Diameter Ø150/100 mm.
Using an SS adapter, it is possible to construct further with the
insulated LAS ES-E 200/150/100 system.
SS tubes for use inside the building*.
Diameter Ø 200/130.
Using an SS adapter, if permitted, it is possible to construct further with
LAS-ES-I 150/100.
Insulated SS tubes.
Discharge diameter Ø150/100.
External diameter Ø 200 mm.
Intended for use inside or outside building for placement in, for example,
timber frame construction, execute with 0 mm distance along combustible
material etc. It is not possible to continue building with an SS adapter with
LAS ES-I 150/100.
Optional discharge system with fan for discharge up to approx. 60 metres
long.
* With the exception of the components intended for that purpose, such as roof and wall terminals.
The diameter of the concentric system appliance connection can be found in table 4-1. By means of natural draft, the flue
gases are discharged to the outside, this can be achieved by means of a wall terminal (C11) or a roof terminal (C31). If
necessary, an existing chimney can be used (C91, see section 7.3.5).
In addition, if combined with PowerVent® (C12, C32), it is possible in many cases to discharge the flue gases with a
smaller diameter (DRU PV-I 100/60).
1
Only use the concentric system supplied by DRU This system has been tested in combination with the appliance. DRU
cannot guarantee a proper and safe operation of other systems and does not accept any responsibility or liability for this.
1
Use a chimney kit for making a connection to the chimney; this can be supplied by DRU.
1
For terminals, observe the information in table 7-2.
Table 7-1: Concentric systems and their application