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
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
Your
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1
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)