Astralpool BPM600A - Noise Distance Calculation Example

Inst253 Astral Heat Pumps V07.13
19
Colum 1 Column 2
Minimum
distance
to your
neighbour
Noise
factor
(m)
1 80
1.5
75
2
3
70
6 65
7
8
9
10 60
15
55
20
30 50
An example may look like this:
A Timber Paling fence that goes right to the ground with some small gaps due to age, is worth a barrier
factor of 5.
One reflective surface adjacent to the Heat Pump is worth a factor or 3.
The Heat Pump has a sound power level of 64 db(A).
Therefore your equation will now look like this:
64 {db(A)} – 5 + 3 = 62
Heat Pump Sound Barrier Factor Reflective Surface Distance Factor
Pressure Level Factor
The distance factor is 62 which should be written in Box 3.
The final step is to mark 64 on Column 2 below and draw a straight line through the middle X to reach
Column 1. Column 1 is the minimum distance the Heat Pump should be installed from a noise sensitive
area in your neighbour’s residence.
With one reflective surface and a timber paling fence with small gaps, the Heat Pump needs to be
installed at least 10 metres from a noise sensitive area in your neighbour’s property.