Flue Options - Baxi Main Combi 24 HE Installation And Service Instructions Manual

Plume Displacement Kit 60 /100 Ø
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.
This bend is equivalent to
1 metre
A
18
© Baxi Heating UK Ltd 2011
Horizontal
Flues
C
B
This bend is equivalent to
1 metre
X
Total equivalent length (up to 3m) =
A+B+C+2x90°Bends

8.0 Flue Options

8.1 Horizontal Flue Systems
1. The standard flue is suitable only for horizontal
termination applications.
2. All fittings should be fully engaged. The approximate
Y
engagement is 40mm. Apply soap solution to the seal on
each fitting to aid assembly.
X
3. Maximum permissible equivalent flue lengths are:-
Horizontal Concentric
4. Any additional "in line" bends in the flue system must be
taken into consideration.
Their equivalent lengths are:-
Concentric Pipes:
Twin Flue Pipe
The elbow supplied with the standard horizontal telescopic
flue kit is not included in any equivalent length calculations
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 as accessories.
Y
4 metres
135° bend 0.5 metres
93° bend 1.0 metres
135° bend 0.25 metres
91.5° bend 0.50 metres