Navien LCB700-21RS Installation & Operation Manual page 10

Product Datasheet On Energy Consumption
The following product data complies with the requirements of EU Regulations No. 811/2013 and No. 812/2013 as supplement to the
Directive 2010/30/EU.
Product data
Condensing boiler
Low-temperature** boiler
B1 boiler
Combination heater (LC, LCX models)
Rated heat output
Seasonal space heating energy efficiency
Energy efficiency class
Useful heat output
At rated heat output and high temperature regime*
At 30 % of rated heat output and low temperature regime**
Useful efficiency
At rated heat output and high temperature regime*
At 30 % of rated heat output and low temperature regime**
Auxiliary electricity consumption
At full load
At part load
In standby mode
Other items
Standby heat loss
Ignition burner power consumption
Emissions of nitrogen oxides (only gas or oil fired)
Sound power level (External Model)
Additional data for combination heaters
Declared load profile
Daily electricity consumption
Annual electricity consumption
Daily fuel consumption
Annual fuel consumption
Water heating energy efficiency
Water heating energy efficiency class
* 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.
10 About the Boiler
21RS, RSX
Symbol Unit
21LS, LSX
21LC, LCX
- -
- -
- -
- -
Prated
η %
S
- -
P
4
P
1
η %
4
η %
1
elmax
elmin
P
SB
P
stby
P
ign
NO
x
L dB
WA
- -
Qelec
AFC
Qfuel
AFC GJ
ηwh %
- -
LCB700
28RS, RSX 36RS, RSX
28LS, LSX 36LS, LSX
28LC, LCX 36LC, LCX
Yes Yes
No No
No No
Yes Yes
21 28
93 93
A A
21.23 28.38
6.75 8.87
92.13 92.48
97.63 97.56
0.0935 0.1013
0.0281 0.0268
0.0016 0.0018
0.0731 0.0843
0 0
57.2 62.5
49 52
XL XL
B B
Yes
No
No
Yes
36
93
A
36.51
11.53
92.27
97.91
0.1242
0.0328
0.0017
0.0731
0
63.2
56
XL
B