8
BS EN 15287-1
Acceptable alternative Methods of connection
No further bends
allowed on this
configeration
Flexible Twin Wall Chimney Liner
Inspection/
Cleanout Door
Inspection Bend
Wall Sleeve
Trim Collar
Chimney Wall
Tee Piece
Tee Cap for
Debris Collection/
Cleaning Access
225 square
(9” x 9”)
225 square
(9” x 9”)
For minimum distance for this
configuration check manufacturers
distance to combustibles
For minimum distance for this
configuration check manufacturers
distance to combustibles
600 min
Support Bracket
Single Wall to
Flex Connector
450mm
MAX
450mm
MAX
Measured from back
of connecting flue
pipe to flue liner
Wall Sleeve
Trim Collar
100
100
100
100
Flexible Twin Wall Chimney Liner
Chimney Wall
Support Bracket
Swept Elbow
Sweep access
Tee Piece
Single Wall to
Flex Connector
Measured from back
of appliance to flue liner
For minimum distance for
this configuration check
manufacturers distance
to combustibles
Wall Sleeve
Trim Collar
100
100
225 square
(9” x 9”)
Flexible Twin Wall Chimney Liner
Chimney Wall
Support Bracket
Swept Elbow
Sweep access
Tee Piece
Single Wall to
Flex Connector
450mm
MAX
Measured from
back of appliance
to flue liner
Flexible Twin Wall Chimney Liner
Inspection/
Cleanout Door
Inspection Bend
Wall Sleeve
Trim Collar
Chimney Wall
Support Bracket
Tee Piece
Tee Cap for
Debris Collection/
Cleaning Access
Single Wall to
Flex Connector
225 square
(9” x 9”)
450mm
MAX
For minimum distance for
this configuration check
manufacturers distance
to combustibles
Measured from back
of connecting flue pipe
to flue liner
600 min
100
100
No further bends
allowed on this
configeration
No further bends
allowed on this
configeration
Flexible Twin Wall Chimney Liner
Inspection/
Cleanout Door
Inspection Bend
Wall Sleeve
Trim Collar
Chimney Wall
Tee Piece
Tee Cap for
Debris Collection/
Cleaning Access
225 square
(9” x 9”)
225 square
(9” x 9”)
For minimum distance for this
configuration check manufacturers
distance to combustibles
For minimum distance for this
configuration check manufacturers
distance to combustibles
600 min
Support Bracket
Single Wall to
Flex Connector
450mm
MAX
450mm
MAX
Measured from back
of connecting flue
pipe to flue liner
Wall Sleeve
Trim Collar
100
100
100
100
Flexible Twin Wall Chimney Liner
Chimney Wall
Support Bracket
Swept Elbow
Sweep access
Tee Piece
Single Wall to
Flex Connector
Measured from back
of appliance to flue liner
For minimum distance for
this configuration check
manufacturers distance
to combustibles
Wall Sleeve
Trim Collar
100
100
225 square
(9” x 9”)
Flexible Twin Wall Chimney Liner
Chimney Wall
Support Bracket
Swept Elbow
Sweep access
Tee Piece
Single Wall to
Flex Connector
450mm
MAX
Measured from
back of appliance
to flue liner
Flexible Twin Wall Chimney Liner
Inspection/
Cleanout Door
Inspection Bend
Wall Sleeve
Trim Collar
Chimney Wall
Support Bracket
Tee Piece
Tee Cap for
Debris Collection/
Cleaning Access
Single Wall to
Flex Connector
225 square
(9” x 9”)
450mm
MAX
For minimum distance for
this configuration check
manufacturers distance
to combustibles
Measured from back
of connecting flue pipe
to flue liner
600 min
100
100
No further bends
allowed on this
configeration
No further bends
allowed on this
configeration
Flexible Twin Wall Chimney Liner
Inspection/
Cleanout Door
Inspection Bend
Wall Sleeve
Trim Collar
Chimney Wall
Tee Piece
Tee Cap for
Debris Collection/
Cleaning Access
225 square
(9” x 9”)
225 square
(9” x 9”)
For minimum distance for this
configuration check manufacturers
distance to combustibles
For minimum distance for this
configuration check manufacturers
distance to combustibles
600 min
Support Bracket
Single Wall to
Flex Connector
450mm
MAX
450mm
MAX
Measured from back
of connecting flue
pipe to flue liner
Wall Sleeve
Trim Collar
100
100
100
100
Flexible Twin Wall Chimney Liner
Chimney Wall
Support Bracket
Swept Elbow
Sweep access
Tee Piece
Single Wall to
Flex Connector
Measured from back
of appliance to flue liner
For minimum distance for
this configuration check
manufacturers distance
to combustibles
Wall Sleeve
Trim Collar
100
100
225 square
(9” x 9”)
Flexible Twin Wall Chimney Liner
Chimney Wall
Support Bracket
Swept Elbow
Sweep access
Tee Piece
Single Wall to
Flex Connector
450mm
MAX
Measured from
back of appliance
to flue liner
Flexible Twin Wall Chimney Liner
Inspection/
Cleanout Door
Inspection Bend
Wall Sleeve
Trim Collar
Chimney Wall
Support Bracket
Tee Piece
Tee Cap for
Debris Collection/
Cleaning Access
Single Wall to
Flex Connector
225 square
(9” x 9”)
450mm
MAX
For minimum distance for
this configuration check
manufacturers distance
to combustibles
Measured from back
of connecting flue pipe
to flue liner
600 min
100
100
No further bends
allowed on this
configeration
No further bends
allowed on this
configeration
Flexible Twin Wall Chimney Liner
Inspection/
Cleanout Door
Inspection Bend
Wall Sleeve
Trim Collar
Chimney Wall
Tee Piece
Tee Cap for
Debris Collection/
Cleaning Access
225 square
(9” x 9”)
225 square
(9” x 9”)
For minimum distance for this
configuration check manufacturers
distance to combustibles
For minimum distance for this
configuration check manufacturers
distance to combustibles
600 min
Support Bracket
Single Wall to
Flex Connector
450mm
MAX
450mm
MAX
Measured from back
of connecting flue
pipe to flue liner
Wall Sleeve
Trim Collar
100
100
100
100
Flexible Twin Wall Chimney Liner
Chimney Wall
Support Bracket
Swept Elbow
Sweep access
Tee Piece
Single Wall to
Flex Connector
Measured from back
of appliance to flue liner
For minimum distance for
this configuration check
manufacturers distance
to combustibles
Wall Sleeve
Trim Collar
100
100
225 square
(9” x 9”)
Flexible Twin Wall Chimney Liner
Chimney Wall
Support Bracket
Swept Elbow
Sweep access
Tee Piece
Single Wall to
Flex Connector
450mm
MAX
Measured from
back of appliance
to flue liner
Flexible Twin Wall Chimney Liner
Inspection/
Cleanout Door
Inspection Bend
Wall Sleeve
Trim Collar
Chimney Wall
Support Bracket
Tee Piece
Tee Cap for
Debris Collection/
Cleaning Access
Single Wall to
Flex Connector
225 square
(9” x 9”)
450mm
MAX
For minimum distance for
this configuration check
manufacturers distance
to combustibles
Measured from back
of connecting flue pipe
to flue liner
600 min
100
100
No further bends
allowed on this
configeration
Top Outlet Twin Wall Connecting Flue Pipe
into Re-lined Masonry Chimney
Rear Outlet Twin Wall Connecting Flue Pipe
into Re-lined Masonry Chimney
Where a horizontal connecting flue of more than 150mm is required to connect a solid fuel
fired appliance to a chimney, an installation method as per the examples below may be used
provided the following criteria is met:-
a.
The maximum length of horizontal connecting flue pipe does not exceed 450mm;
b.
A Defra exempt appliance or an appliance, which is limited to burning authorised smokeless
fuel only, is installed;
c.
A calculation according to BS EN 13384-1 has indicated safe operation of the proposed
configuration, and the results of the calculation are left with the householder along with the
appliance installation instructions;
d.
The appliance manufacturer agrees in writing to the proposed configuration;
e.
The chimney manufacturer agrees in writing to the proposed configuration;
f.
The total length of single wall connecting flue pipe is not more than 1.5m;
g.
The appropriate distances to combustible materials from both the appliance and the
connecting flue pipe are maintained.
Top Outlet Single Wall Connecting Flue Pipe
into Re-lined Masonry Chimney
Rear Outlet Single Wall Connecting Flue Pipe
into Re-lined Masonry Chimney
NOTE: These alternative methods do not apply to Republic of Ireland.
