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Home, Your, Pre-fabricated flues – Stovax Gas and Electric Fires User Manual

Page 4: Balanced flue, Electric fires, Pre-cast flue, Integral powered flue, Powered flue, No air vent required

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Brick/Stone Chimney

(Class 1)

Conventional chimneys are easily recognisable. The stack

rises well above the roofline and is topped by a traditional

chimney pot or gas terminal. This type of chimney relies on

the natural circulation of heated air to expel the products of

combustion up your chimney.

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The type of chimney or flue you have usually dictates your

choice of fire. To help you understand which fires are suitable

for your home, please use the following information and pictures

to identify your chimney. Don’t worry, if you don’t have a

chimney though, you can still find the perfect fire for your home!

Once you have identified your chimney (or confirmed you do

not have one), take note of the symbol that represents this, as

this will be used throughout the brochure to represent the fire

or fires that are suitable for installation in your home. You may

also want to utilise the fold-out key at the back of this brochure

to quick reference any symbols. Please check with your local

Gazco retailer that your flue and fireplace opening are suitable

for your fire choice.

Pre-fabricated Flues

(Class 1 & 2)

You will see a metal flue cowl on your roof. Some are all

metal whilst others may terminate through a short rectangular

pot (but without a chimney stack). These flues create the

same circulation of heated air as a brick or stone chimney.

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The type of c

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2

Balanced Flue

(No chimney required)

Balanced flues work in conjunction with glass fronted gas

fires. The appliance is completely sealed from the room into

which it is installed (so there are no draughts and heating

efficiency is increased!) and a twin-wall pipe vents directly

to an outside wall. Air for combustion is drawn in through

the outer pipe whilst the inner pipe removes the combustion

gases to the exterior of the property. Depending on the fire

selected, the twin-walled pipe may exit horizontally through

an external wall or vertically through the roof. No electric

supply is required; therefore there is no sound with this

flue system.

An Integral Powered Flue fire is an open fronted gas

appliance with an electronically driven fan system mounted

directly behind it on an external wall. When the fire is

ignited the fan switches on automatically, expelling the

products of combustion through a short, horizontal metal

flue to the outdoors.

This works in a very similar manner to the Integral Powered

Flue. However, the main benefit is that, instead of a short,

straight-through-the-wall flue, you can have much longer flue

runs and up to three bends in the flue. This means your fire

does not have to be installed against an external wall so it

can be located in more rooms around your home.

Electric Fires

(No chimney required)

Gazco produce an excellent selection of electric Riva fires

and the electric Stilo inset fire which do not, of course,

require a chimney or flue of any kind.

Pre-cast Flue

(Class 2)

Many modern homes have been built with such flues. You

can readily identify them by either a metal flue cowl or a

raised ridge terminal on your roof. Again, the natural

circulation of heated air expels the products of combustion.

Incidentally, these flues tend to be very shallow in depth so

a slimmer fire is often required. Deep appliances, however,

may be able to be installed with the use of either a spacer

kit or deeper rebate on the fireplace.

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3

PF

BF

PF

Integral Powered Flue

(No chimney required)

Powered Flue

(No chimney required)

All fires shown with this symbol, boast the advantage of not normally requiring an air vent*. Please discuss this in full with
your local retailer.

*Requirements in the Republic Of Ireland are different.

X

No Air Vent required

(UK)