5
Information requirements relating to boiler heaters for space heating, boiler combined heaters and
cogeneration heaters for space heating
Model/Models:
VIADRUS CLAUDIUS K2 L3X
Condensing boiler:
YES
Low-temperature boiler:
NO
Boiler type B1:
NO
Cogeneration heater for space heating: NO
If YES, featured with an auxiliary heater:
Combined heater:
NO
It
e
m
D
e
s
ig
n
a
ti
o
n
V
a
lu
e
U
n
it
It
e
m
D
e
s
ig
n
a
ti
o
n
V
a
lu
e
U
n
it
Rated heat output
Prated
22.7
kW
Seasonal energy efficiency of
heating (***)
ƞ
s
92
%
For the boiler heaters for space heating and boiler
combined heaters: useful heat output
For the boiler heaters for space heating and boiler
combined heaters: useful efficiency
At rated heat output and high
temperature mode (*)
P
4
22.7
kW
At rated heat output and high
temperature mode (*)
ƞ
4
87.6
%
At 30% of rated heat output and
low temperature regime (**)
P
1
4.3
kW
At 30% of rated heat output and
low temperature regime (**)
ƞ
1
97.6
%
Consumption of auxiliary electrical power:
Other items:
At full load
el
max
0.034
kW
Heat loss in standby mode
P
stby
0.088
kW
At partial load
el
min
0.013
kW
Electricity consumption of the
pilot burner
P
ign
-
kW
In standby mode
P
SB
0.003
kW
Emissions of nitrogen oxides
NO
x
12
mg/
kWh
Contact information
VIADRUS a.s.
Bezru
č
ova 300
Bohumín
735 81
(*)
High temperature mode for condensing boilers mean return temperature of 60 °C at the inlet to the heater and the inlet
temperature 80 °C at the outlet of the heater.
(**)
Low temperature for condensing boilers mean return temperature of 30 °C, for low temperature boilers it is 37 °C, and for other
heaters it is 50 °C (at the inlet of the heater).
(***) For seasonal energy efficiency, the value is based on the gross calorific value according to EU regulation no. 813/2013
