Potterton Promax HE Store Installation & Servicing Instructions Manual page 14

Plume Displacement Kit 60 /100 Ø
1M Extensions, 45° & 93° bends are
also available
NOTE: Horizontal flue pipes should always be installed with at least a
1.5° fall from the terminal to allow condensate to run back to the boiler.
This bend is equivalent to
1 metre
A
14
X
Horizontal
Flues
C
B
This bend is equivalent
to 1 metre
X
Total equivalent length
(upto 10m) =
A+B+C+2x90°Bends
Flue Options
Y
1. The Promax Store can be fitted with flue
systems as illustrated.
2. The standard flue kit, Part No. 5118489
comprises a concentric 100/60 terminal and a
93° bend. It is suitable only for horizontal
termination applications.
3. Maximum permissible equivalent flue
lengths are:-
Horizontal Concentric
Vertical Concentric
Vertical Twin Pipe
4. Any additional "in line" bends in the flue
system must be taken into consideration.
Their equivalent lengths are:-
Concentric Pipes:
45° bend
93° bend
Twin Flue Pipe
45° bend
91.5° bend
The elbow attached to the boiler is not
included in any equivalent length calculations
5. The illustrations opposite show examples of
permissible flue systems.
NOTE: Flue length is measured from point
X to Y as shown.
IMPORTANT: All flue systems must be
securely supported at least once every
metre. Suitable pipe supports are available
Y
as accessories.
10 metres
10 metres
15 metres
0.5 metres
1.0 metres
0.25 metres
0.50 metres
© Baxi Heating UK Ltd 2012