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21
7.0
SITE REQUIREMENTS
7.11
Flue Options
1. The Potterton Gold HE can be fitted with flue
systems as illustrated.
2. The standard flue is suitable only for horizontal
termination applications.
3. Maximum permissible equivalent flue lengths are:-
Horizontal Concentric
10 metres
Vertical Concentric
10 metres
Vertical Twin Pipe
15 metres
4. Any additional “in line” bends in the flue system
must be taken into consideration.
Their equivalent lengths are:-
Concentric Pipes:
45° bend
0.5 metres
93° bend
1.0 metres
Twin Flue Pipe
45° bend
0.25 metres
91.5° bend
0.50 metres
The elbow supplied with the boiler is not included in
any equivalent length calculations
5. The illustrations opposite show examples of
permissible flue systems.
6. Instructions for guidance and fitting are included in
each kit, where appropriate.
NOTE:
Flue length is measured from point A to B
as shown.
Horizontal
Flues
Vertical
Flues
Vertical
Flues
(Twin Pipe)
B
A
B
A
B
A
Publication No. 5116282