Flue Options
1
. The
P
romax 24 Store can be fitted with flue
systems as illustrated.
2. Maximum permissible equivalent flue lengths
are:-
1
0 metres (60/
1
00 system - vertical & horizontal)
20 metres (
8
0/
1
2
5
system - vertical & horizontal)
15
metres (
8
0/
8
0 twin pipe)
3. Any additional “in line” bends in the flue
system must be ta
k
en into consideration.
Their equivalent lengths are:-
C
oncentric
P
ipes:
4
5
° bend
0.
5
metres
93° bend
1
.0 metres
Twin Flue
P
ipe
4
5
° bend
0.2
5
metres
9
1
.
5
° bend
0.
5
0 metres
The elbow attached to the boiler is not included
in any equivalent length calculations
4. The illustrations opposite show examples of
permissible flue systems.
NOTE: Flue length is measured from point
X
to
Y
as shown.
I
M
PORTANT:
All flue systems must be
securely supported at least once every
metre. Suitable pipe supports are available
as accessories.
Horizontal
Flues
Y
X
P
lume Displacement Kit 60 /
1
00
Ø
1
M Extensions, 4
5
° & 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 bac
k
to the boiler.
Y
X
This bend is equivalent to
1
metre
Total equivalent length
(up to
1
0m) =
A+B+
C
+2x90°Bends
B
A
C
This bend is equivalent
to
1
metre
15
© Baxi Heating UK Ltd 2015