5
Connecting Flue Pipe
APPLIANCE/CHIMNEY CONNECTION
On solid fuel, wood burning or biomass applications requiring a T600 rating, when a single wall
connecting flue pipe is used to connect an appliance to a Twin Wall Insulated System Chimney,
the lower end of the insulated chimney section must extend a minimum of 425mm below the
ceiling. When connecting the appliance to the connecting flue pipe, the joint between the the
connecting flue pipe and the appliance outlet must be securely caulked and sealed with non
asbestos rope (or suitable alternative) and fire cement.
On gas and oil appliances, where a T200 rating is required what should the distance be below
the ceiling?
On gas and oil appliances, where a P rating is required for the flue pipe, then the relevant
approved silicone or viton seal should be used to ensure a gas tight joint.
CONNECTING FLUE PIPE DIAMETER
Connecting Flue Pipe Diameter size should be as recommended by the appliance manufacturer.
Where there is a requirement for a flue diameter smaller than the appliance spigot, then 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
solid fuel applications, where there is a risk of soot fire, refer to CE Approvals on page 2 for full
details. as per the measured distance M shown on page 2 for Ø150 - Ø200 or 3 x Ø.
