Potterton Gas condensing boiler, Installation, Operation And Maintenance Manual, Page: 26 / 136

5.6 Exhaust gas system
Paramount three
30/40
Paramount three
60
Paramount three
80
Paramount three
95
Paramount three
115
Flue
Type Flue
Size
Max.
Flue
Length*
Max
No. of
bends
(87
0
)
Flue
Size
Max.
Flue
Length*
Max
No. of
bends
(87
0
)
Flue
Size
Max.
Flue
Length*
Max
No. of
bends
(87
0
)
Flue
Size
Max.
Flue
Length*
Max
No. of
bends
(87
0
)
Flue
Size
Max.
Flue
Length*
Max
No. of
bends
(87
0
)
C13
(Horizontal Concentric)
80 /
125
10 2 100 /
150
5 2 100 /
150
5 2 100 /
150
5 2 100 /
150
5 2
C33(1)
(Concentric Vertical)
80 /
125
13 0 100 /
150
22 0 100 /
150
13 0 100 /
150
10 0 100 /
150
10 0
C33(2)
(Concentric Vertical)
80 /
125
15(3) 2 100 /
150
24(3) 2 100 /
150
15(3) 2 100 /
150
18(3) 2 100 /
150
20(3) 2
C33(3)
(Concentric Vertical)
80 /
125
13(3) 2 100 /
150
13(2) 2 100 /
150
9(3) 2 100 /
150
9(2) 2 100 /
150
8(2) 2
B23
(Conventional Flue)
80 20(3) 3 110 25(3) 3 110 16(3) 3 110 20(3) 2 110 20(3) 2
Contaminated chimneys
Combustion of solid and liquid fuels generates deposits and pollution in the perti-
nent flue gas tract. Such flue gas tracts are not suitable for combustion air supply
of heat generators without pretreatment. If the combustion air has to be drawn
via an already existing chimney, this flue gas tract should be inspected by the com-
petent district chimney sweep officer and if necessary cleaned. Should structural
deficiencies (e.g. old, broken chimney structures) conflict with its use as combus-
tion air supply duct, suitable measures such as shake-out of the fireplace should
be taken. It must be ensured that there is no contamination of the combustion air
with foreign matter. In case an appropriate clean up of the existing flue gas tract is
not possible, the heat generator can be operated on a concentric flue gas pipe in-
dependent of ventilation. Alternatively, a ventilation based operation is possible.
Even in these two cases a thorough cleaning by the competent district chimney
sweeper is a must.
Duct requirements
Inside buildings, exhaust gas system should be laid in suitable ventilated ducts.
The ducts must be made of non-combustible, dimensionally stable materials. Fire
resistance duration of the shaft: 90 min., in case of buildings of lower building
height: 30 min.
The exhaust gas pipe can be laid in the duct evenly slanting at an angle of 15° or
30°.
Lightning protection
Danger of electric shock! Danger of life by lightning!
The chimney head cover must be integrated in a possibly existing lightning protec-
tion system and house-side potential equalisation.
This work should be carried out by a approved concern specializing in lightning
protection and electrical work.
Installation
26 Paramount three 30-115 kW 396532 05.11