Schwank novoSchwank D 20S U Technical Manual page 10

novoSchwank shape U
2. Exhaust flue with individual exhaust system -
combustion air from inside the room
[Type B23]
Only use this system in rooms with no air pollution
and without relevant pressure differences to
outside. Otherwise use type C.
3. Exhaust flue with individual exhaust system -
combustion air from outside the room
[Type C]
Combustion air and exhaust air are to be
conducted by a temperature stable, concentric
pipe from a wall or roof entrance.
Max. length of the concentric pipe can be 6 m
plus two 90° elbows.
The concentric pipe ends at a bifurcated pipe.
Please ensure that the connection for exhaust air
between heater and bifurcated pipe is a flexible
pipe. Do not use back-pressure valves or dampers
in the exhaust flue.
novoSchwank shape U
Max. length
max. number
between heater
of elbows
and roof/wall
(90°)
entrance
6 m
Tab. 3: air/exhaust routing
Fig. 7: Air/exhaust-system,
version stainless steel
10
Ø of air/exhaust
flue
2 100 mm
4. Exhaust flue with flue collecting system and
central flue fan
[according to EN 777, Type F]
The heating installation must not exceed 10 radiant
tubes. The exhaust air of each tube is collected
via a central collecting tube system by a central
flue fan and led to the chimney. Planning,
construction and layout of such installations must
be carried out by Schwank employees, as well as
commissioning. The strict observance of the
Schwank layout-drawings and calculation figures
are the precondition of the manufacturer's
warranty.
With system F the radiant heaters will be installed
with their individual flue fans. Please note that it
necessary to install in the collecting pipe behind
each radiant heater and in the following collection
pipes damper or a pressure-balancing device. This
ensures a precise regulation and an even exhaust
flue of each radiant tube.

For detailed information regarding
setting up and commissioning of a flue
collection system please see
corresponding sections in chapters
4, 10 and 11.