external-installation connecting flue pipe sw to dw

EXTERNAL SYSTEM CHIMNEY

Yes, this is required to protect the fabric of the building and gives a safe distance to combustibles within the wall cavity.

No, this is not required.

A wall support should be used immediately above the 135 degree tee to take the weight of the 135 degree tee. The tee is then suspended from the wall support top plate using the locking band for a secure fix.

With standard wall bands every 3m
With structural wall bands every 4m

The wall support with side plates pointing down will take 10m
The wall support with side plates pointing upwards will take 15m
The top plate used with cantilever brackets will take 15m

A structural wall band with structural wall band extensions should be used immediately above the offset.

60mm must be maintained to combustible materials.
50mm is the distance to non combustible materials.

3m is the maximum supported distance between elbows in an offset.
1.5m is the maximum distance unsupported between elbows in an offset.

The total number of changes of direction within a system is four, where a 90 degree tee or 90 degree elbow count as two changes of direction each.
The maximum number of offsets in a system is 2, providing that the chimney comes straight off the top of the appliance.

Using standard locking bands 1.5m
Using structural locking bands 3m. In this case a structural locking band must be used on the joint directly below the last wall band or support, and on each pipe joint above it. A structural locking band is not required on the terminal.

CONNECTING PIPE THROUGH WALL

Yes. Adaptors are available in the ICS range; please refer to catalogue and installation instructions.

No. The system is designed to provide a gas tight joint. Sealant is only required where the ICS connects to the appliance. Here you should use rope gasket and a suitable high temperature sealant to provide a gas tight joint.

Unless you are able to sweep the chimney through the stove, then a cleaning access will be required in the flue pipe.

An adjustable pipe should be used.

60mm.

It is recommended that there is a minimum vertical height of 600mm before any offset.

The total number of changes of direction within a system, from the appliance connector through to termination, is four, where a 90 degree tee or 90 degree elbow count as two changes of direction each.
The maximum number of offsets in a system is 2, providing that the chimney comes straight off the top of the appliance.

Yes, this is required to protect the fabric of the building and gives a safe distance to combustibles within the wall cavity.

No, this is not required.