Navien NCB-20LHWE, Руководство по установке и эксплуатации

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The following table lists the product information requirements (EU regulation No 811/2013 and No 813/2013)
KD Navien Symbol Unit NCB-20LHWE NCB-23LHWE NCB-28LHWE NCB-33LHWE
Condensing boiler YES YES YES YES
Low-temperature (**) boiler NO NO NO NO
B1 boiler NO NO NO NO
Cogeneration space heater NO NO NO NO
Combination heater NO NO NO NO
Rated heat output P
rated
kW 20 23 28 33
Seasonal space heating energy
η
s
% 92 93 93 93
Useful heat output
At rated heat output
and high-temperature regime (*)
P
4
kW 19.5 23.4 28.3 33.2
At 30 % of rated heat output
and low-temperature regime (**)
P
1
kW 6.5 7.8 9.4 11.1
At rated heat output
and high-temperature regime (*)
η
4
% 87.8 87.9 87.9 87.8
At 30 % of rated heat output
and low-temperature regime (**)
η
1
% 97.8 98.1 97.7 98.0
Auxiliary electricity consumption
At full load elmax kW 0.036 0.045 0.048 0.045
At part load elmin kW 0.014 0.015 0.016 0.016
In standby mode P
SB
kW 0.003 0.003 0.003 0.003
Other items
Standby heat loss P
stby
kW 0.080 0.080 0.084 0.084
Ignition burner power
consumption
P
ign
kW - - - -
Annual energy consumption Q
HE
GJ 37 43 52 57
Sound power level, indoors L
WA
dB 50 52 54 52
Emissions of nitrogen oxides NO
x
mg/kWh 36 38 30 37
Contact details
(*) High-temperature regime means 60 °C return temperature at heater inlet and 80 °C feed temperature at heater outlet.
(**) Low temperature means for condensing boilers 30 °C, for low-temperature boilers 37 °C and for other heaters 50 °C return temperature (at heater inlet).
Read the user’s information and installation manual before the application is assembled, installed or maintained.
3000 Cathedral Hill, Guildford, Surrey, GU2 7YB
10 About the Boiler