Carrier Atmosphera 42EM series - 9.7.2.1 Plenum Box Pressure Drops; 9.7.3 Sound Damper Pressure Drops

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9.7.2.1 - Air pressure drops (Pa) for octopus plenum boxes as a function of the number of spigots (200 mm Ø)
Sizes 2.1, 2.2, 2.3, 3.1, 3.2 and 3.3
Air flow (m
3
/h) 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500
Air flow (l/s) 0 28 56 83 111 139 167 194 222 250 278 305 333 361 389 417
2 spigots SUP 0 0.9 3.5 7.9 14.0 21.8 31.4
RET 0 0.7 2.7 8.1 10.9 17.1 24.6
3 spigots SUP 0 0.2 0.7 1.6 2.9 4.5 6.5 6.9 116 14.7 18.1 21.9
RET 0 0.2 0.7 1.7 3.0 4.6 6.7 9.1 11.9 15.0 18.6 22.5
4 spigots SUP 0 0 0.2 0.4 0.7 1.1 1.6 2.1 2.8 3.5 4.3 5.2 5.2 7.3 8.5 9.7
RET 0 0.1 0.3 0.8 1.4 2.1 3.0 4.1 5.4 6.8 8.5 10.2 12.2 14.3 16.6 19.0
5 spigots SUP 0 0 0.1 0.3 0.5 07 1.0 1.4 1.8 2.3 2.9 3.5 4.1 4.9 5.6 6.5
RET 0 0 0.2 0.4 0.7 1.1 1.6 2.1 2.8 3.5 4.3 5.3 6.3 7.3 8.5 9.8
Legend:
SUP supply
RET return
9.7.3 - Pressure drops (Pa) for return air sound dampers
Air flow (m
3
/h) 100 300 500 700 900 1000 1100 1200 1300
Air flow (l/s) 28 83 139 194 250 278 305 333 361
Sound damper T1 013711----
Sound damper T2 and T3 0 0.5 1233.5456