Riello Start 24 KI, Installer And User Manual

Page: 25 / 128

ENGLISH
25
DESCRIPTION
Methane gas
(G20)
Butane
(G30)
Propane
(G31)
Lower Wobbe index (at 15°C-1013 mbar) MJ/m 3 S 45.67 80.58 70.69
Net Calorific Value MJ/m 3 S 34.02 116.09 88
Supply nominal pressure (+)
mbar
(mm C.A.) 20
(203.9)
28 - 30
(285.5 - 305.9)
37
(377.3)
Supply nominal pressure ( country MT - I3B/P)
mbar
(mm C.A.) 30
(305.9)
30
(305.9)
Supply minimum pressure
mbar
(mm C.A.) 13.5
(137.7)
START 24 KI
Burner nozzle number N° 12 12 12
nozzles diameter Ø (mm) 1.3 0.77 0.77
Heating maximum gas capacity Sm
3
/h 2.82
kg/h 2.10 2.07
DHW maximum gas capacity Sm
3
/h 2.82
kg/h 2.10 2.07
Heating minimum gas capacity Sm
3
/h 1.13
kg/h 0.84 0.83
DHW minimum gas capacity Sm
3
/h 0.88
kg/h 0.65 0.64
Maximum heating pressure (mbar) 11.80 28.00 36.00
(mm C.A.) 120.33 285.52 367.10
Maximum pressure, domestic hot water
(mbar) 11.80 28.00 36.00
(mm C.A.) 120.33 285.52 367.10
Minimum heating pressure
(mbar) 2.10 5.00 6.70
(mm C.A.) 21.41 50.99 68.32
Minimum domestic hot water pressure
(mbar) 1.30 3.10 4.00
(mm C.A.) 13.26 31.61 40.79
START 24 KI
Seasonal space heating energy efficiency class C
Water heating energy efficiency
class
B
Parameter Symbol Value Unit Parameter Symbol Value Unit
Rated heat output Prated 24 kW
Seasonal space heating energy
efficiency
η
s 77 %
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 (*)
P4 24,0 kW
At rated heat output and high-
temperature regime (*)
η
4 80,9 %
At 30% of rated heat output and
low-temperature regime (**)
P1 7,1 kW
At 30% of rated heat output and
low-temperature regime (**)
η
1 80,3 %
Auxiliary electricity consumption Other parameters
At full load elmax 16,0 W Stand-by heat loss Pstby 135,0 W
At part load elmin 6,4 W Pilot flame energy consumption Pign - W
In Stand-by mode PSB 2,3 W Annual energy consumption QHE 90 GJ
Sound power level, indoors LWA 53 dB
Emissions of nitrogen oxides NOx 143
mg/
kWh
For combination heaters:
Declared load profile XL Water heating energy efficiency
η
wh 79 %
Daily electricity consumption Qelec 0,097 kWh Daily fuel consumption Qfuel 25,411 kWh
Annual electricity consumption AEC 21 kWh Annual fuel consumption AFC 19 GJ
(*) 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).