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14
1. FLUE OR CHIMNEY
1.1 The flue or chimney system must be in good condition.
It must be inspected by a competent person and passed for
use with the appliance before installation
Products of combustion entering the room can cause
serious health risks.
1.2 You must check the following:
— The construction of the masonry chimneys, flue block
chimneys and connecting flue pipe system must meet the
requirements of the Building Regulations†
— A flexible flue liner system can be used if certified for
use with solid fuel systems and installation complies with
manufacturer’s instructions and Building Regulations.
The flue liner must be replaced when an appliance is
replaced unless proven to be recently installed and in good
condition.
— If it is necessary to fit a register plate it must conform to
the Building Regulations†
— The minimum height of the flue or chimney must
be 4.5m from the hearth to the top of the flue, with no
horizontal sections, a maximum of 4 bends with angles of
less than 45 degrees
— Enure the connecting flue pipe it kept a suitable
distance from any combustible material and does not form
part of the supporting structure of the building
— Make provision to remove the appliance without the
need to dismantle the chimney
— Any existing flue must be confirmed as suitable for the
new intended use as defined in the Building Regulations
— The flue or chimney systems must be inspected and
swept to confirm the system is structurally sound and free
from obstructions**
— If the appliance is believe to have previously served an
open fire the chimney must be swept a second time within
a month of regular use after installation to clear any soots
falls that may occurred due to difference in combustion
levels.
— The flue exit from the building must comply with local
building control rules.†
— Do not connect or share the flue or chimney system
with another heating appliance
1.3 Do not connect to systems containing large voids or over
230mm square.
1.4 You must provide suitable access to enable the collection
and removal of debris.
1.5 You must sweep and inspect the flue when the appliance is
installed.
1.6 You must check the flue draught with all windows and
doors closed and any extraction fans in this or adjoining
rooms running at maximum speed. (See next section for
additional ventilation requirements)
Max. Draught = 2.0mm Wg
Min. Draught = 1.0mm Wg
SITE REQUIREMENTS
In the U.K:
*BS 6461: Part 1, and the requirements of Building
Regulations
**This should be done by a NACS registered (UK only)/
INFO registered (Eire only) chimney sweep, who will issue
you with a certificate.
† Building Regulations Document J
Flue Plate:
Where a hearth, fireplace, flue or chimney is provided
or extended (including cases where a flue is provided
as part of refurbishment work), information essential
to the correct appliance and use of these should be
permanently posted in the building, to meet Requirement
J4 of the Building Regulations (England and Wales), F3.12
(Scotland).
† Building Regulations Document J
Additional:
A new factory made system that complies to EN 1856; Part 1
can be used providing installation is to the requirements of:
i) BS 7566 Parts 1 -4
ii) the manufacturer's instructions
iii) Building Regulations.
For a guide containing information on Chimneys and Flues
contact:
The British Flue & Chimney Manufacturers’ Association,
FETA
2 Waltham Court
Milley Lane
Hare Hatch
Reading
Berkshire RG10 9TH
Tel: 0118 9403416 e-mail: info@feta.co.uk