Riva2 Gas Fires Brochure

Brick/Stone Chimney
(Class 1)
The chimney 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.
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.
Pre-fabricated Flues
(Class 1 & 2)
Balanced Flue
(No chimney required)
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.
Gazco offers a comprehensive range of balanced flue system components. Please refer to our
dedicated Concentric Flue System brochure which can be requested from your retailer or viewed
online at www.gazco.com.
Conventional Flue
Conventional flue systems are for Gazco’s Open Fronted and some Glass Fronted gas
fires. They are easily recognisable as either a conventional brick or stone chimney, or as
a pre-fabricated chimney system. Should your home have neither at present, it is usually
possible to have a pre-fabricated system installed in your home if required.
Balanced Flue
Balanced flues work in conjunction with Gazco’s Glass Fronted gas
fires only. 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.
Your Home and Flue Requirements...
All fires shown with this symbol have 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)
58