Flueing options
Fan forced flued appliances
There are several options for flueing fan-forced flued appliances, as shown in the diagrams here. There are maximum flue lengths and numbers of bends allowed in a single flueing application.
These need to be considered when specifying the location of an appliance. Check the appliance manufacturer’s requirements for exact details.
Sideways flueing
The appliance can be installed on an inside wall of a property and flued sideways.
Standard: max flue length 4.5m, 3 bends
(90 degrees).
Direct flueing
The appliance can be flued directly through an external wall.
Vertical flueing
The heater does not need to be located close to an external wall as the flue can be contained inside a wall, and run vertically through to the roof.
Standard: max flue length 8m, 2 bends
(45 degrees).
In-built gas fire
Some in-built gas fires are designed to fit easily into standard masonry chimneys. Gas appliance manufacturers and suppliers recommend that a flexible flue is installed in some situations when utilising an existing fireplace or chimney. It is important to consider the draw and soundness of a chimney as this will effect the performance of a gas appliance. The installation of a flueing system in an existing chimney will ensure that optimum draw is achieved.
Using an existing fireplace
If a gas fire is to be installed into an existing masonry chimney, a spun aluminium flexible flue is the safest and most efficient option. Check the manufacturer’s appliance specifications to ensure that the height, depth and width of the fireplace can accommodate the model selected.
Flueing in an existing fireplace
Standard: max flue length 12m, 3 bends.
Creating a new fireplace
Installing an in-built gas fire into a home without an existing fireplace can be achieved by creating a mock fireplace where the appliance flue can be installed. An example of this option is shown below.
Building a mock fireplace to accommodate an appliance can be reasonably straightforward. Some manufacturers will supply a fireproof unit which isolates all combustible materials from the appliance. This means an inexpensive fireplace can be created just about anywhere by creating a mock fireplace against an internal wall.
Creating a new fireplace
An inexpensive fireplace can be created just about anywhere by creating a mock fireplace against an internal wall.
Freestanding fire flueing options
Freestanding gas fires can be flued a number of ways. Most commonly either vertically through the roof, or directly from the back of the appliance through an external wall.
The placement of freestanding fires is very versatile and some appliances can even be placed directly onto carpet and have small clearance distances from combustible materials such as walls.
Flueing vertically through a roof
Standard: max flue length 12m, 3 bends.
Directly flued horizontally from the back of the appliance
Some in-built gas fires can also be directly flued.