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Air supply / Exhaust Requirements
The calculation of air supply / exhaust
requirements of a building heated by radiant tube
heaters is subject of European Directive EN 13410.
Please follow local by-laws as well.
Please see the max. lengths of combustion air
supply- and exhaust flue pipe on [Tab. 3].
Place of Installation
The room to be heated must have an air volume of
minimum 10 m³ for each kW of the nominal
thermal load of the installed heater.
Air supply [combustion air from inside the
room, types A3 and B23]
Heating installations with combustion air from
inside the room are only allowed in rooms without
string air pollution. Otherwise use system with
combustion air from outside [type C].
In halls and buildings with a normal air change by
means of joints and gaps it is not necessary to
install additional equipment to ensure combustion
air supply.
Air supply / exhaust systems
For the radiant tube novoSchwank the following air
supply / exhaust systems are possible:
1.
Indirect flue into the room
[Type A3 without exhaust system,
combustion air from inside the room]
2.
Flued with individual exhaust system,
combustion air from inside the room
[Type B23]
3.
Flued with individual exhaust system,
combustion air from outside the room
[Type C]
4.
Flued with flue collecting system and
central flue fan – combustion air either from
inside or from outside
[according to EN 777, Type F]
1.
Indirect flue into the room
[Type A3 without exhaust system combustion
air from inside the room]
The exhaust air of the tube heater has to be
conducted from the inside of the room to the
outside.
Conduction of the exhaust air may be carried out
with one of the following 3 methods:
a)
Thermal ventilation: Combustion air and
exhaust air are to be conducted through
fixed outlets positioned on the roof or on
the walls of the building.
b)
Mechanical ventilation: Combustion air and
exhaust air are to be conducted through
one or more fans positioned on the roof or
on the walls of the building.
c)
Natural ventilation: Combustion air and
exhaust air are to be conducted through
outlets as a result of differences in pressure
and in temperature between the internal
and external side of a building.
For exact dimensioning and positioning
of supply air and exhaust air outlet of the
building according to EN 13410 or
G 638-2 please contact Schwank GmbH,
phone +49 [0] 221 / 7176 0.
