Plastic (Pps) Balanced Flue System For Routing Over External Walls; Cen/Tr 1749); Max. Length - System Size 60/60; Mum Flue Lengths - Viessmann Vitodens 100-W Technical Manual

Design and sizing information for connection on the flue gas side
Vitodens 300-W, 333-F, 343-F and Vitosolar 300-F with Vitodens 300-W
Rated heating output range
Max. length – system size 60/60
– Flue gas
– Ventilation air
Max. length – system size 80/80
– Flue gas
– Ventilation air
The following components are taken into consideration for the maxi-

mum flue lengths:

■ Connection pipe D 1 m long.

■ 1 bend 87° and 1 support bend 87°
or
■ 2 bends 45° and 1 support bend 87°
2.7 Plastic (PPs) balanced flue system for routing over external walls (type C

CEN/TR 1749)

The Vitodens may also be connected, without a shaft, to a flue pipe
that is routed over an external wall.
The combustion air is drawn in via the air inlet piece. The vertical
external pipe provides protection and the static air gap inside it acts
as thermal insulation. Safeguard the unrestricted draining of the con-
densate from the flue into the boiler through an appropriate fall of at
least 3°.
The flue for routing over external walls has been certified as a con-
centric balanced flue system with the Vitodens condensing boiler. A
performance verification to EN 13384 is not required.
*1 Alternative system size. Balanced flue adaptor must be ordered separately.
VITODENS, VITOSOLAR
kW
m
m
*1*2
m
m
11 19
15 15
15 15
20 20
20 20
If fitting other bends, tees or straight lengths, subtract the following
values from the maximum length:
■ Connection pipe 0.5 m long: 0.5 m
■ Connection pipe 1 m long: 1 m
■ 45° bend: 0.3 m
■ 87° bend: 0.5 m
■ Inspection tee: 0.3 m
(cont.)
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