Appendix; Operating Noise Of Indoor Units - Daikin VRV II Series Design, Installation & Testing Instructions

Appendix

7. Appendix

7.1

Operating Noise of Indoor Units

7.1.1 Difference between Catalogue Data and Actual Noise
Operating noise differs depending on the place of measurement (room) because of the various degrees
with which the room reverberates the sound. To determine the amount of reverberation under uniform
conditions, the unit has been measured in a dead room with results having been compiled in the below
table. The actual sound produced in unit operation can be determined from Table 1.
Sound pressure rise due to room reverberation (Higher than catalogue data)
Table 1
Room Interior
Detection
Average Absorbed Sound (Room with
Approx. 50 m² Floor Area)
Estimated value to be added to
catalogue value
Classifications of indoor unit environments (reference data)
Table 2
Classification Environment
1 Non-active places requiring silence
Sedate business activities that do not
2
disturb people even over time
Somewhat quiet settings that permit
3 soft-spoken conversation, typical
activities
Somewhat loud settings that permit
4
regular conversation, brisk activity
Loud places that permit conversation
5 in a loud voice, highly active place
with many people
6 Rather loud settings
Notes:
1. Excluding bedrooms
2. Reference values of faint noises in the place of usage
106
A
Floor Mortar
Walls Mortar
Ceiling Mortar
0.05
11~12
Example
Reception rooms, libraries, sitting rooms,
hospitals (examining rooms) (NOTE 1)
Quiet offices, classrooms, small
conference rooms, lobbies
Small offices, large conferences rooms,
quiet stores, restaurants
Large offices, typical stores, cafeterias
Loud large-side offices, large cafeterias,
loud stores
Factories, gymnasiums, recreational
places like pachinko parlors
B
Linoleum tile Carpet
Fiberglass +
Plaster
Saroncross finish
Fiberglass +
mineral wool tile
Saroncross finish
0.12
Typical office
8~8.5
Faint Noises Recommended
(NOTE 2) Operating Noise on Site
~35 ~40
~40 ~45
~45 ~50
~50 ~55
~55 ~60
~60 ~65
General Information
Si39-303
C
0.25
5~6