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Technical information
Sensor table
The table shows all sensor resistance at different tem-
peratures.
Sound levels
The table describes the sound levels stated in sound
pressure level.
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
propagation the sound level drops by 6dBa with each
doubling of distance.
Example Optima 600 Optima 1400
Distance Lp - ear (dBa) Lp - ear (dBa)
1 metre 53 59
2 metres 47 53
4 metres 41 47
8 metres 35 41
Heat pump
Sound pressure level
Lp - ear (dBa)
Optima 600 53
Optima 900 53
Optima 1100 53
Optima 1400 59
Optima 1700 59
Temperature (ºC) kΩ
-40 154.300
-35 111.700
-30 81.700
-25 60.400
-20 45.100
-15 33.950
-10 25.800
-5 19.770
0 15.280
5 11.900
10 9.330
15 7.370
20 5.870
25 4.700
30 3.790
35 3.070
40 2.510
45 2.055
50 1.696
55 1.405
60 1.170
65 0.980
70 0.824
75 0.696
80 0.590
85 0.503
90 0.430
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