Daikin EWWDC11BJYNN [17/21] Sound data

• Hydronic Systems • Chillers

• Chillers • R-134A • EWWD-BJYNN

7 Sound data

7 - 1 Sound level data

Sound pressure level EWWD-BJYNN

NOTES

1 Average sound pressure level rated in accordance to ISO 3744, free field semispheric conditions.

2 The values are according to ISO 3744 and are referred to units without pumps kit.

3 The sound pressure levels are calculated from the sound power levels as per the following formula:

• Lp = Lw - 10logS

• Lp = Sound pressure level Lw = Sound power level

• S = (L + 2d)(W + 2d) + 2(L + 2d)(H + d) + 2(W + 2d)(H + d)

• L = unit length in m W = unit width in m H = unit height in m d = distance from the unit in m

• Reference source 20 μPa

Unit size

Sound pressure level at 1 m from the unit in free field ( rif. 2 x 10

-5

)

63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz dBA

380

63,5 70,5 80,0 74,5 74,0 68,5 60,5 50,5 78,0

460

64,5 71,5 81,0 75,5 75,0 69,5 61,5 51,5 79,0

550

65,5 72,5 82,0 76,5 76,0 70,5 62,5 52,5 80,0

750

66,5 73,5 83,0 77,5 77,0 71,5 63,5 53,5 81,0

850

67,0 74,0 83,5 78,0 77,5 72,0 64,0 54,0 81,5

900

67,5 74,5 84,0 78,5 78,0 72,5 64,5 54,5 82,0

C10

68,0 75,0 84,5 79,0 78,5 73,0 65,0 55,0 82,5

C11

68,5 75,5 85,0 79,5 79,0 73,5 65,5 55,5 83,0