Manual Stovax Riva - Woodburning and Multi-fuel (page 33 of 40) (English)

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Technical Appendix - Flues

2. Flue or Chimney

2.1 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.

2.2 The following must be checked:

— 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 and a maximum of 4 bends. Bends must have

angles of less than 45 degrees from the vertical.

— There should be at least 600mm of vertical flue pipe

above the appliance before any bends are introduced.

— Ensure the connecting flue pipe is kept a suitable

distance from any combustible material and does not

form part of the supporting structure of the building.

— The installer must ensure the flue pipe diameter is not

less than the diameter of the outlet of the appliance and

does not narrow to less than the size of the outlet at any

point in the system.

— 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 chimney is believed to have previously served an

open fire it must be swept a second time within a month

of regular use after installation to clear any soot falls that

may have occurred due to difference in combustion levels.

— The flue exit from the building must comply with local

building control rules†.

— Chimney heights and/or separations may need to

be increased in particular cases where wind exposure,

surrounding tall buildings, high trees or high ground could

have adverse effects on flue draught.

— Do not connect or share the flue or chimney system with

another heating appliance.

2.3 Do not connect to systems containing large voids or spaces

over 230mm square.

2.4 Suitable access must be provided to enable the collection

and removal of debris.

2.5 The flue must be swept and inspected when the appliance

is installed.

Flue Draught

The flue draught must be checked with all windows and

doors closed and any extraction fans in this, or adjoining

rooms, running at maximum speed (see Installation

Checklist for ventilation requirements).

Twin Wall Flue System

If this appliance is to be used in conjunction with a twin

wall flue system then Stovax recommend the use of

their Professional XQ range. Details of this product are

available from your Stovax retailer.

In the U.K:

*BS En 15287-1, 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).

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

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Stovax Riva - Woodburning and Multi-fuel Manual

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