Viadrus K4 - Page 9

General Information
9
Information requirements for boiler space heaters, boiler combination heaters
and cogeneration space heaters
Model(s): VIADRUS K4G1H24XX
Condensing boiler: yes
Low-temperature (**) boiler: no
B1 boiler: no
Cogeneration space heater: no If yes, equipped with a supplementary heater:
Combination heater: no
Item
Symbol
Value
Unit
Item
Symbol
Value
Unit
Rated heat output
Prated 24 kW
Seasonal space heating energy
efficiency
ƞ
s
90 %
For boiler space heaters and boiler combination heaters: Useful
heat output
For boiler space heaters and boiler combination heaters: Useful
efficiency
At rated heat output and high-
temperature regime (*)
P
4
24 kW
At rated heat output and high-
temperature regime (*)
ƞ
4
97,53 %
At 30 % of rated heat output and
low-temperature regime (**)
P
1
4 kW
At 30 % of rated heat output and low-
temperature regime (**)
ƞ
1
105,72 %
Auxiliary electricity consumption Other items
At full load el
max
0,02 kW Standby heat loss P
stby
0,045 kW
At part load el
min
0,011 kW Ignition burner power consumption P
ign
- kW
In standby mode P
SB
0,003 kW Emissions of nitrogen oxides NO
x
25
mg/
kWh
Contact details
VIADRUS a.s.
Bezručova 300
Bohumín
735 81
Czech Republic
(*) 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).