9
Metro 150 Xt - instruction for installation
English
!N.B. - Make sure the universal roof tile ts well against the surrounding tiles;
- Make sure the adhesive ashing sticks to the at roof properly.
6.5.4 Connection to an existing flue
The appliance can also be connected to an existing flue.
A flexible SS pipe is placed in the chimney for discharging flue gases. The surrounding space is used to supply the
combustion air.
The following requirements apply for connection to an existing flue:
!N.B. Use a minimum vertical length of 0,8m on top of the appliance of ø130/ø200 concentric pipe, after this you can place
a reducing socket to ø100/ø150 if necessary.
- allowed only if the special DRU chimney connection set is used;
- Installation instructions supplied;
- minimum dimensions 150 x 150 mm;
- maximum vertical length 12 metres;
- maximum horizontal length 3 metres;
- the existing flue must be clean;
- the existing flue must not have any cracks or leaks.
6.6 Building the chimney breast
The appliance is designed to be installed snugly into a newly built chimney breast.
There must be sufficient space around the appliance to ensure a good heat distribution.
The chimney breast should be ventilated by vents.
N.B. - Use incombustible and heat-resistant material to construct the chimney breast, including rear wall of the chimney breast;
- The total free vent area of the vents, installed as high as possible, should be at least 200 cm2.
!N.B. When building the chimney breast, the following points should be taken into account (see Fig. 2):
- position of the control box: this should be placed within 650 mm to the left or right of the appliance, as low as possible;
- size of the control box; see section 8.2 Installing the control box;
- position of the vents;
- the size of the glass window so that it can be tted/removed once the chimney breast has been built;
- protecting the gas control block and hoses from cement and plaster.
!Tip The vents should preferably be created in both sides of the chimney breast: you could use DRU ventilation elements.
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Check that the concentric system has been installed correctly;
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Check that the clamping strips have been secured with self-tapping screws in places which will be inaccessible later;
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Allow sucient clearance round the appliance in the chimney breast to enable the heat to disperse:
- minimum internal width: 1800 mm.
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Do not plaster over the anges because:
- the heat from the appliance could cause cracks;
- it will then be impossible to remove/t the glass window.
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If the chimney breast is made of stone-like materials or has been nished in stucco, it should be left to dry for at least
6 weeks prior to taking it into operation, in order to prevent cracks.
6.7 Installing the control box
The control box is to be installed as low as possible.
The control box contains various components such as the type plate, the gas control block, and the receiver for the
remote control. (See Fig. 5 for details.)
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Make a 285 x 194 mm (h x w) opening in the chimney breast;
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Fit the inner frame (1); to do this unscrew the bolts (5).
!Tip - If the chimney breast is brick, the inner frame can be cemented in during building;
- For a chimney breast of any other material, glue/cement the inner frame in place or t it with four countersunk
screws.
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Mount the gas control block on the brackets (2) on the inner frame;
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Reconnect the hoses to the gas control block.
N.B. - Avoid kinks in the hoses;
- Tighten the exible hose and aluminium pipe making sure they are gastight;
- Screw the thermocouple on by hand rst and then;
- then tighten it a quarter turn using a suitable spanner.
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Connect the wires of thermocouple 1 to the gas control; see Photo 1.
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Blow through the gas pipe if necessary;
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Connect the gas pipe to the gas tap;
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Bleed o the air in the gas pipe;
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