Bs5440 - Up To 70Kw - elco THISION L EVO Series System Manual

2.5 BS5440 – Up to 70kW
Air Vent Position
A
Above a
Terminal
B
Below a
Terminal
C
Horizontally to
a Terminal
Open Flued Appliances installed within a Room (Natural ventilation requirements direct to Outside Air.)
Total rated net input not in excess of (70 kW – 7 kW) x 5cm² = Ventilation opening free area Open Flued
Open Flued appliances Installed within a compartment (Natural ventilation requirements.)
Ventilation Route
Grille Location
Low Level (Free Area/kW)
High Level (Free
Area/kW)
Balanced Flued Appliances Installed within an Enclosure (Natural ventilation requirements)
Ventilation Route
Grille Location
Low Level (Free Area/kW)
High Level (Free
Area/kW)
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Appliance Input
(kW)
0 to 7
>7 to 14
>14 to 32
>32
0 to 7
>7 to 14
>14 to 32
>32
0 to 7
>7 to 14
>14 to 32
>32
Ventilation to room or internal space.
(The internal space ventilated into must be
ventilated as detailed above to outside air.)
20 cm²
10 cm²
Ventilation to room or internal space.
10 cm²
10 cm²
Fanned Draught
Distance (mm)
300
300
300
300
300
300
300
300
300
300
300
300
Ventilation direct to outside air
Ventilation direct to outside air
10 cm²
5 cm²
5 cm²
5 cm²