:
1.air outlet from side: the noise level is the average sound pressure level measured from front, left, right directions.
2.air outlet from top: the noise level is the average sound pressure level measured from front, back, left, right
directions.
measured point:
H ( height to the ground) = (h (unit height) + 1m) /2
mounting-on-wall unit: duct unit without auxiliary duct:
Norminal condition: indoor temperature (cooling): 27 ℃DB/19℃WB, indoor temperature (heating): 20℃DB
Outdoor temperature(cooling): 35℃DB/24℃WB, outdoor temperature(heating): 7℃DB/6℃WB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound
intensity meter. It is a sound pressure noise level. The detailed method please refer to the following information:
Installation state: the unit should be placed on the flat floor or be mounted in horizontal direction.
Testing method:
0.8m
1m
1.4m
2m
duct
h
1m
1m
1m
1m
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