6
Connecting Flue Pipe
CONNECTION TO THE APPLIANCE OR FLUE BOX
The connection to the appliance should be made using fire cement/rope or high temperature
sealant to ensure a positive seal. Where TecnoFlex Plus is to be fitted to the top of an open fire
place, a Schiedel Rite-Vent gather unit should be fitted into the throat of the chimney connected
to the TecnoFlex Plus and sealed off.
When connecting Triplelock flex to a Schiedel Rite-Vent flue box, the flexible liner simply
pushes directly on to the fast fix spigot. No sealant is required.
When making a connection to a fluepipe in another product type, such as rigid stainless steel
single or double wall or vitreous enamel, then the appropriate Schiedel approved connector to/
from flexible should be used. The connector should be suitably sealed to the appliance spigot
ensuring a gas tight joint.
CONNECTING FLUE PIPE DIAMETER
Connecting Flue Pipe Diameter size should be as recommended by the appliance manufacturer.
Under all circumstances the operational requirements of the appliance and the configuration of
the flue must satisfy the flue sizing requirements of EN13384-1.
DISTANCE TO COMBUSTIBLES
In accordance with building regulations, it is essential that the correct distance to combustible
material is maintained on connecting flue pipes. On solid fuel applications, where there is a risk
of soot fire, on unmeasured (NM) designated single wall product, this distance is 3 x ØInt of
the pipe, e.g. for Ø125mm the distance is 375mm and for Ø150mm the distance is 450mm to
combustibles on both painted and non painted variants. On measured (M) single wall or double
wall products this distance will be as declared by the chimney manufacturer.
CONNECTING FLUE PIPE ROUTE
Connecting flue pipes should only be used to connect appliances to a Chimney. They should
not pass through any roof space, partition, internal wall or floor, except to pass directly into a
chimney through either a wall of the chimney or a floor supporting the chimney.
Connecting flue pipes should be located as to avoid igniting combustible material.
On solid fuel appliances the maximum length of a connecting flue pipe is 2m. This distance is
reduced to 1.5m if any of the acceptable alternative methods of connection are adopted as per
BS EN15287-1. (See p.6 for full details.)
On appliances with a top outlet, it is recommended that a vertical run of at least 600mm should
be allowed immediately above the appliance prior to any change of direction.
On appliances with a rear outlet, it is recommended that there is maximum of 150mm in the
horizontal run however under certain conditions, as described in alternative methods in BS EN
15287-1, this may be increased to 450mm. (See p.6 for full details.)
