Sound Levels; Sensor Table - Worcester GREENSOURCE 6 kW Installation Manual

Sound levels

Sound pressure level:
Sound pressure level is defi ned as the sound level, which at an ear
level of 1.8 metres, is perceived one metre from the heat pump.
Measured in a sound measurement room without echo at an
outdoor temperature of +7ºC and 50ºC fl ow temperature.
Example:
When the heat pump is installed outside with free sound propaga-
tion the sound level drops by 6dBa with each doubling of distance.

Sensor table

The table shows all sensor resistance at different temperatures.
Heat pump
Greensource 6 kW
Greensource 7 kW
Greensource 9.5 kW
Example
Distance
1 metres
2 metres
4 metres
8 metres
Temperature (ºC)
-40
-35
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
43
Technical information
Sound pressure level
Lp - ear (dBa)
49
49
53
Greensource 6 kW
Lp - ear (dBa)
49
43
37
31
kΩ
154.300
111.700
81.700
60.400
45.100
33.950
25.800
19.770
15.280
11.900
9.330
7.370
5.870
4.700
3.790
3.070
2.510
2.055
1.696
1.405
1.170
0.980
0.824
0.696
0.590
0.503
0.430