Preparations For The Installation Of The Combined Inlet-Outlet System; Wall Duct With Concentric Pipes; Roof Duct With Concentric Pipes; Fitting The Fire To An Existing Chimney - Dru Verwarming VENTEO G25 Instructions D'installation Et Mode D'emploi

3
Preparations for the installation of the
combined inlet-outlet system
• Select the required connection from the options shown
in figure 3.
• Erect the concentric pipes from the heater up. If the
structural situation requires that the first section of the
concentric pipe system be built in, take special note of
the required method of assembly.
• The appliance has a coupling section; fit the first metre of
pipe onto this.
• Allow at least 5 cm between the outside of the
concentric pipes and the wall or ceiling.

Wall duct with concentric pipes

You must consider that for a wall duct, the first 1 or 0.5
metres of pipe must be fitted vertically. 0,5 metre for a
maximum of 2 metres horizontal pipe, and 1 metres for a
maximum of 3 metres of horizontal pipe.
• 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.Through flammable material Ø 230 mm.
• Now vertically connect one or more concentric pipes to
the heater outlet. Press well and fit the strip(s) of clip
binding.
• 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.
1
2x45˚
L=1+2+5+(2x1)=10
4
4
1x90˚
L=2+0,5+(2)=4,5
max 2m
fig. 4

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
• Drill a Ø 160 mm hole at the point where the chimney
• Now vertically connect the concentric pipes to the
• Determine the length of the pipes required and ensure
• 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
19
INSTRUCTIONS FOR INSTALLATION
2x90˚
2
L=1+1+4+(2x2)=10
1m
(H totaal= 5m)
L=4+1+(2)=7
of the chimney.
is required.Through flammable material Ø 230 mm.
heater outlet. Press well and apply the clip binding.
that the adhesive flashing or the universal tile fit properly.
5
1x90˚
38c-744b
max 3m
Venteo