Dru Maestro 60/2 Tall RCH, Installation Manual

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I nst allation manual
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7.3.4 Connection to an existing chimney (C91))
The appliance can be connected to an existing chimney (C91). A 100 mm diameter flexible SS pipe is placed in the
chimney for discharging flue gases. The surrounding space is used as combustion air supply. Use the DRU spacer here.
Place this spacer every three metres.
In case of an appliance connection of ø200/130, it should be reduced to ø150/100. See the situations in table 7-5 for the
minimum vertical length of the reduction. The concentric system of 150/100 mm can be connected to an existing
chimney.
The following requirements apply when connecting to an existing chimney:
- Only allowed when used in combination with the special DRU chimney connections. For a horizontal chimney
connection, “Chimney connection stainless steel Ø150/100” must be used. For a vertical chimney connection,
“Chimney connection plate Ø150” must be used.
- The internal dimension of the chimney should be at least Ø150mm and, in case of a square/rectangular chimney, at
least 150x150 mm.
- The vertical length has a maximum of 12 metres.
- The total horizontal pipe length may have a maximum length. Bends smaller than 45º do not count as bends, but the
sloping length thereof is included in the total length of the concentric system. See section 7.3.2.
- The existing chimney has to be clean.
- The existing chimney has to be tight.
The installation requirements for the flexible stainless steel pipe must be observed at all times.
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- If the appliance is equipped with explosion hatches (see table 4-1), the minimum chimney breast dimensions as stated
in section 7.1 must be complied with.
- If the appliance is equipped with an explosion door (see table 4-1), it must be made sure that the existing surrounding
structure is able to absorb sufficient heat to prevent overheating of electronic components.
For adjusting the appliance, the same conditions/instructions apply as for the concentric system described above.
7.4 Placing the chimney breast
For a good heat discharge and operation of the appliance, there should be sufficient space around the appliance. The
chimney breast should be ventilated sufficiently by means of ventilation holes (incoming and outgoing).
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- When an appliance is built in the floor, please take into account the minimum distances from the floor/ground in front
of the appliance (see fig. 7-12).
- Use non combustible and heat-resistant material for the chimney breast, including the top of the chimney breast, the
material inside the chimney breast and the back wall of the chimney breast.
The appliance is not a support structure. Make sure the appliance does not have to bear the weight of the chimney
breast for example.
- The passage of the ventilation holes (outgoing) is stated in table 4-1. If it is not possible to use a control hatch in the
chimney breast, an air supply of at least 80 cm2 must be placed as low as possible, but not above the burner surface. If
a control hatch can be used, the control hatch will suffice as air supply (see section 7.5).