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Specflue DW30
Product information
Specflue DW30 has been specifically designed to
meet the requirements of today’s clean burning
multi-fuel appliances. The system provides an
economical and robust twin wall insulated stainless
steel chimney system offering high material
specification, design, manufacturing quality,
thermal performance and ease of installation. It is
suitable for negative draught conditions where the
maximum continuous flue gas temperature does
not exceed 600°C and is soot fire rated at 1000°C.
Specflue DW30 is available in 130 and 150mm
internal diameters and consists of adaptors,
lengths, fittings, supports and firestop components.
Each chimney element is fabricated with a fully
welded 316L stainless steel inner liner and a
stainless steel outer case. It is also available in
a Matt Black finish as indicated by the MB suffix
on the part number. The 30mm annulus between
the two walls is insulated with a high thermal
performance pressure injected or pipe section
mineral wool to a mean density of 170-190kg/
m3. The jointing system is a simple push fit
male and female joint with the male end pointing
upwards. The 70mm of engagement offers a strong
structural joint with the locking band provided.
Specflue DW30 is designed to be used both
internally and externally as a fully supported
structure, and must be installed in accordance
with National and Local Building Regulations and
Standards.
Approvals
Specflue DW30 is tested, approved and CE marked
to BS EN 1856-1:
T600 N1 D V2 L50050 G60
60mm distance
to combustibles
in a combustible shaft
T600 N1 D V2 L50050 G50
50mm distance
to non-combustibles
in a non-combustible shaft
CE Certificate No. 0432-CPR-00593-01
Chimney Diameter
Internal diameter
Outside diameter
130mm
190mm
150mm
210mm
The chimney diameter size should be as
recommended by the appliance manufacturer and
in accordance with current building regulations.
Warranty
Specflue DW30 carries a 25 years conditional
warranty.
General Design Considerations
Chimney Diameter/Height
The internal diameter of the chimney must conform
to the requirements of the heating appliance
manufacturer’s instructions, and should not, under
any circumstance, be less than the appliance
outlet. The height of the chimney will depend on the
building structure, however it is recommended that
not less than 4.5 metres should be considered the
minimum chimney height from the appliance
to termination for solid fuel applications. For
further clarification refer to Document J of the
DOE Building Regulations, Section F of the
Building Standards (Scotland) and Section L
of the Building Regulations (Northern Ireland).
Chimney Route
The chimney system should remain as straight as
possible through its vertical run but should it be
necessary to offset the chimney there should be
no more than 4 changes of direction of a maximum
45°. It is also recommended that a vertical rise of
600mm should be allowed immediately above the
appliance before any change of direction.
Chimney Support
The chimney must be adequately supported
throughout its length and the Specflue DW30
product offers a range of lateral and vertical
support components to undertake the safe
installation of the chimney system.
