Wall Duct With Concentric Pipes; Roof Duct With Concentric Pipes; Fitting The Fire To An Existing Chimney; Baffle - Dru Avanto Concerto Instructions D'installation Et Mode D'emploi

INSTRUCTIONS FOR INSTALLATION

Wall duct with concentric pipes

Ensure that the first metre of pipe used for the wall duct
is assembled vertically.
• Determine the position of the appliance and the position
of the wall duct.
• Drill a Ø160 mm hole at the point where the wall duct is
required.
• Now vertically connect one or more concentric pipes to
the heater outlet. Press well and fit the strip(s) of clip
binding. The blue rubber ring will sufficiently seal the flue
system.
• Place the bend on top of this, fit any horizontal concentric
pipes required, and make sure the connections are
gastight.
• Connect the wall duct to the bend or the horizontal pipes
and make sure that this connection is also gastight.

Roof duct with concentric pipes

A duct through a roof can open out anywhere on the roof,
with an extension to the ridge if necessary. Depending on
which of the aforementioned options has been chosen, the
roof duct will be supplied with either adhesive flashing for
a flat roof or a universally adjustable tile for a slanted roof.
• Determine the position of the appliance and the position
of the chimney.
• Drill a Ø 160 mm hole at the point where the chimney is
required.
• Now vertically connect the concentric pipes to the
heater outlet. Press well and apply the clip binding. The
blue rubber ring will sufficiently seal the flue system.
• Determine the length of the pipes required and ensure
that the adhesive flashing or the universal tile fit properly.
• Saw the outside pipe off at the length required.
• Connect the roof duct to the concentric pipes.
NB: Alternatively, you can fit the concentric pipes before
installing the heater. In that case the connection to the
outlet of the appliance should be made using a length of
pipe that can be shortened later.

Fitting the fire to an existing chimney

The fire can be fitted into an existing chimney providing
that the chimney / flue dimensions are 150 mm or more.
A special flue kit is required, which can be obtained
from Drugasar or a Drugasar agent. Do not use any
other type of flue system for this.
BS 5871 – 1 : 2001
Any chimney previously used for an appliance burning a
fuel other than gas shall be swept thoroughly before
installing any gas appliance.
Appliances shall be connected only to the types and sizes
of flue system as specified.
For any other information about this flue system please
contact Drugasar or Drugasar approved agent.

Baffle

To ensure that the heater works properly, the baffle should
be fitted in such a way that the heater can be adjusted
according to the customer's pipe system.
The baffle is supplied separately and should be fitted into
the heater as illustrated in fig. 7. Once it has been adjusted,
fix the baffle with the socket screw.
Adjusting the baffle:
• If the total length of the pipe system has been calculated
to between 1-12 m (examples 1, 2 & 3).
Baffle at 40 mm.
Slide the baffle in as far as it will go, the opening will
automatically be 40 mm.
• If connected with 1-1.5 m vertical pipe, a 90° bend and a
wall duct.
No baffle.
• If connected with 1-1.5 m vertical pipe, a 90° bend and
then 1-4 m horizontal pipe, as shown in example 4.
No baffle.
Fig. 3 illustrates how to calculate the total lengths.

Connecting the Gas Supply

With the appliance a 40 cm flexible stainless steel gas hose
with G3/8" nipple joint has been supplied to
facilitate quick and easy installation. An approved
connecting tap with coupling should be used in the supply
hose (In Belgium this must be B.G.V. approved).
Furthermore:
• Expel all air from the supply pipes/hoses before coupling
to the appliance.
• Do not turn the coupling tap when connecting it to the
gas supply.
• Avoid any pressure on the control tap and pipes.
• Check that all connections are gastight.
12
fig. 7