Baxi Potterton Gold FSB 30 HE Total equivalent length = A+B+2x45Bends, B A

8.0 Flue Options
20 © Baxi Heating UK Ltd 2011
(i)
Plume Displacement 70/110 dia Kit
1M Extensions, 45° & 93° bends
are also available - see Section 9.0
NOTE:Horizontal flue pipes should always be installed with a 1.5° fall from the
terminal to allow condensate to run back to the boiler.
(ii)
(i)
This bend is equivalent to
0.5 metre
Total equivalent length =
A+B+2x45°Bends
B
A
This bend is equivalent to
0.5 metre
(ii)
(i)
(ii)
Horizontal
Flue System Examples
8.1 Horizontal Flue Systems
Only a flue approved with the Potterton Gold FSB HE 30
can be used.
Concentric
The maximum equivalent lengths are 4m(horizontal) or
(vertical). Their lengths exclude the standard elbow and
flue/terminal assembly (horizontal) and terminal assembly
(vertical).
Any additional “in line” bends in the flue system must be
taken into consideration. Their equivalent lengths are:
Concentric Pipes: 45° bend 0.5 m
93° bend 1.0 m
NOTE:Flue length is measured from point (i) to (ii) as
shown.
IMPORTANT:All flue systems must be securely
supported at least once every metre. Suitable pipe
supports are available as accessories.