Installation and operating instruction
Oil condensing boiler WTC-OB 18-B
3 Product description
83311002 1/2018-03 La
15-132
3.4.5 Emissions
Sound levels
Dual number noise emission values
Measured sound power level L
WA
(re 1 pW)
Uncertainty value K
WA
57
4
dB(A)
(1
dB(A)
Measured sound pressure level L
pA
(re 20 μPa)
Uncertainty value K
pA
50
4
dB(A)
(2
dB(A)
(1
Determined to ISO 9614-2.
(2
Determined at 1 metre distance from the front of the appliance.
The measured noise levels plus uncertainty values form the upper limit value, which
could occur when measuring.
3.4.6 Rating
Stage 1
Stage 2
Combustion heat rating Q
B
11.6 kW
17.6 kW
Boiler capacity at 80/60 °C
11.3 kW
17.2 kW
Boiler capacity at 50/30 °C
12.2 kW
18.3 kW
Condensate quantity at 50/30 °C
0.8 l/h
1.0 l/h