references
Smoke ventilators F400/120
MAGMA
SELECTION GUIDE
69 %
SPECIFICATIONS AND REQUIRED VALUES Capacity: 12,000 m3/h, Static pressure: Pst = 600 Pa, Ducted discharge SELECTION METHOD 1 / Locate the desired flow rate on the flow rate scale: 12,000 m3/h. 2 / This line will cut, along the bottom of the curves, ONLY ONE dynamic pressure graduation (pdyn).
655 Pa 890 rpm
3 / The dynamic pressure must be taken into account according to whether the casing is connected to the discharge or not. Ducted discharge = Open-end discharge =
1,500 rpm motor
For this example, the total dynamic pressure will therefore be: 55 Pa 4 / The total pressure for our example will therefore be: (Pt = Pstat + Pdyn) Pt = 600 + 55 = 655 Pa Place this value on the pressure scale. The point where the flow rate and pressure lines intersect is X. 5 / Using this point (X), the following information can be determined for our example: • Impeller rotation speed: 890 rpm • Sound pressure: 51 dBA • Power input: 4 kW • Total air handling capacity: 69% 6 / To determine the appropriate motor power for your system, choose a Flow rate motor with reserve power of between 10 and 20%. in m3/h For our example: 4 x 1.15 = 4.6 astandard motor: 5.5 kW
51 12000 m3/h 55 Pa
Key
Acoustic pressure Fan speed
Motor speed
4-pole motor 2-pole motor
Smoke extraction only
VENTILATION STANDARD SPECIFICATIONS: FORWARD-CURVED IMPELLER
Meets ISO 5801, 1.2 kg/m3 air density. Sound pressure level measured in a hemispherical free field along a reflective surface 6 m from the connected noise source. Unit with ducted suction and discharge, Lp in dB(A).
MAGMA 200 200 MAGMA BP
BP
3480 3250
MAGMA 355 MAGMA 355 BP BP
2900
2600
2300
2050
3000 rpm 3,000tr/mn
1830
1630
1460
1295
1150
1030
920
Moteur 1500 tr/mn 1,500 rpm motor
Flow rate in m3/h
Pdyn outlet Pdyn suction P free outlet
Pdyn outlet Pdynrefoulement Pdyn suction Pdyn aspiration
Moteur 1500 tr/mn 1,500 rpm motor
Flow rate in m3/h
P P refoulement libre free outlet
Key
Acoustic pressure Fan speed
Motor speed
4-pole motor 2-pole motor
Smoke extraction only
662
HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 17.01 A