Flue Gas Discharge / Combustion Air Supply System - Dru Metro 100 Tunnel Installationsanleitung

➠
Place the appliance on its destined location.
The gas control is mounted under the appliance, at the burner plate. It should be disconnected and placed in the
control box at a later stage. For placing the gas control in the control box, see section 6.7.
Follow the procedure described below:
➠
Disconnect the pipes of the gas control (fl exible gas pipe, aluminium pilot burner pipe and thermocouple).
➠
Disconnect the gas control from the burner plate by unscrewing the self-tapping screw.
Caution - Make sure there is no dirt in gas pipes and connections;
- Avoid kinks in the pipes.
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Roll out the pipes in the direction of the control box.
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Roll out the ignition cable in the direction of the control box.
!Caution The data plate should remain connected to the chain.
➠
Place the chain with the data plate in the direction of the control box.
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Set the height of the appliance using the adjustable feet and
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Make the appliance level at the same time.
Caution - Do not place the appliance too tightly against the back wall; this is guaranteed by means of the wall brackets;
- Make sure the space between the appliance's legs is kept free;
- Do not cover the appliance and/or do not wrap it in an insulation blanket or any other material.
➠
Connect the appliance to the wall using wall brackets (B) and the key bolts supplied; see fi g. 3.

6.5 Flue gas discharge / combustion air supply system

6.5.1 General
The appliance is of the C11/C31 type.
The appliance is connected to a combined fl ue gas discharge/combustion air supply system, hereafter referred to
as the concentric system.
The passage to the outside can be made with a wall terminal (see section 6.5.2) or a roof terminal (see section 6.5.3).
If necessary, you can also use an existing chimney (see section 6.5.4).
- Only use the concentric system supplied by DRU (Ø100 / Ø150 mm). This system has been tested together with the
Caution
appliance. DRU cannot guarantee a proper and safe operation of other systems and does not accept any liability for
this;
- For connecting to an existing chimney you should only use the chimney kit supplied by DRU.
The concentric system is constructed from (the connection stump of ) the appliance.
If structural circumstanc es require that the concentric system is placed fi rst, the appliance can later be connected
with a telescopic pipe piece.
6.5.2 Application with wa ll terminal
6.5.2.1 Construction of concentric system with wall terminal
The concentric system with wall terminal has to comply with the following conditions:
- First, a concentric pipe of at least 0.5 meters should be connected vertically to the appliance;
- The total vertical pipe length may have a maximum of 4 meters;
- A 90° bend is connected to the other end of the vertical part;
- When using 0.5 meter of vertical pipe length, the total horizontal pipe length can have a maximum of 2 meters
(excluding wall terminal, see fi g. 4a);
- When using a minimum of 1 meter up to a maximum of 4 meters of vertical pipe length, the total horizontal pipe
length can have a maximum of 3 meters (excluding wall terminal, see fi g. 4b).
Depending on the construction of the concentric system, the appliance must receive further settings; see Table 1 for
determining the conditions and section 6.8, Adjusting the appliance, for the method.
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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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