User manual

INSTALLATION AND USE MANUAL
Chapter 2
page 11
Technical service – Dimplex - all rights reserved - Reproduction prohibited
Square or rectangular section flue pipes must have rounded internal
corners with radius not less than 20mm. For the rectangular section,
the ratio between internal dimensions must be ≤1.5.
The recommended section for a flue pipe according to its length is
listed in the table below:
Height (m) Useful section (cm²)
Up to 5 m
600 (20x30 cm o ∅ 22 cm)
Between 5 and 7 m.
400 (20x20 cm o ∅ 20 cm)
Over 7 m
324 (18x18 cm o ∅ 18 cm)
N.B. Too small or too large a section reduces draught and insulation.
Where the chimney flue is not vertical or access for cleaning is
restricted, the chimney flue should be equipped with a solid material
collection chamber at the flue base to be easily opened with an airtight
door.
IMPORTANT!
In the event of doubt on your chimney flue operations or
that its dimensions are different from those recommended,
we highly suggest an authorised technician inspect and
measure chimney flue performance.
The company shall not be held liable for poor operation of
the fireplace stove that is due to a flue pipe of improper size
or installation that does not comply with this instruction
booklet and Building Regulations.
AISI 316 stainless steel flue
pipe with dual chamber
insulated with ceramic wool
or equivalent resistant to
400°C.
EXCELLENT
Flue pipe in refractory brick
with insulated double wall and
external coat of cement mix
lightened with honeycomb
material such as clay.
GOOD
Traditional square section
clay flue pipe with insulating
hollow inserts.
GOOD
Avoid flue pipes with internal
rectangular sections whose
larger side is double the smaller
such as 20x40 or 15x30.
AVERAGE