Navien NCB300-28K, Руководство по установке и эксплуатации

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About the Boiler 11
The following table lists the product information requirements (EU regulation No 811/2013 and No 813/2013)
Specifications Unit
NCB300-28K NCB300-37K NCB300-41K
Condensing boiler YES YES YES
Low-temperature (**) boiler NO NO NO
B1 boiler NO NO NO
Cogeneration space heater NO NO NO
Combination heater YES YES YES
Rated heat output P
rated
kW 24 26 26
Seasonal space heating energy efficiency η
s
% 93 93 93
Useful heat output
At rated heat output and
high-temperature regime (*)
P
4
kW 23.7 26.1 26.1
At 30 % of rated heat output and
low-temperature regime (**)
P
1
kW 8.4 8.5 8.5
Useful efficiency
At rated heat output and
high-temperature regime (*)
η
4
% 88.3 88.4 88.4
At 30 % of rated heat output and
low-temperature regime (**)
η
1
% 97.8 97.6 97.6
Auxiliary electricity consumption
At full load elmax kW 0.039 0.034 0.034
At part load elmin kW 0.017 0.016 0.016
In standby mode P
SB
kW 0.003 0.003 0.003
Other items
Standby heat loss P
stby
kW 0.078 0.078 0.078
Ignition burner power consumption P
ign
kW 0 0 0
Annual energy consumption Q
HE
GJ 7.5 8.1 8.1
Sound power level, indoors L
WA
dB 52 47 47
Emissions of nitrogen oxides NO
x
mg/kWh 32.9 24.0 24.0
For combination heaters
Declared load profile XL XL XL
Daily electricity consumption Q
elec
kWh 0.183 0.168 0.182
Annual electricity consumption AEC kWh 39 36 39
Water heating energy efficiency η
wh
% 84.1 83.9 83.1
Daily fuel consumption Q
fuel
kWh 23.2 23.3 23.5
Annual fuel consumption AFC GJ 18 18 18
Contact details Navien LTD, Building 2, Guildford Business Park, Guildford, GU2 8XH
(*) 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).
Specific precautions
Read the user’s information and installation manual before the application is assembled, installed or maintained.