ENGLISH
18
MySMART R.S.I.
19
MULTIGAS TABLE
DESCRIPTION
Methane gas
(G20)
Propane
(G31)
Lower Wobbe index (at 15°C-1013 mbar)
MJ/m
3
S
45,67
70,69
Net Calorific Value
MJ/m
3
S
34,02
88
Supply nominal pressure
mbar
mm W.C.
20 (203,9)
37 (377,3)
Supply minimum pressure
mbar
mm W.C.
10 (102,0)
-
MySMART 20 R.S.I.
Diaphragm - number of holes
No.
2
2
Diaphragm - diameter of holes
ø mm
1x4,7 flap+1x4,2 free
1x3,4 flap+1x3,25 free
Burner diameter
mm
63
63
Burner length
mm
95
95
CH maximum gas capacity
Sm
3
/h
2,12
kg/h
1,55
DHW maximum gas capacity
Sm
3
/h
2,12
kg/h
1,55
CH minimum gas capacity
Sm
3
/h
0,30
kg/h
0,31
DHW minimum gas capacity
Sm
3
/h
0,30
kg/h
0,31
Number of fan rotations with slow ignition
rpm
3.700
3.700
Maximum number of heating fan rotations
rpm
4.500
4.500
Maximum domestic hot water fan rotations
rpm
4.500
4.500
Minimum number of heating fan rotations
rpm
1.200
1.500
Minimum number of DHW fan rotations
rpm
1.200
1.500
The data indicated must not be used to certify the system; for certification, use the data indicated in the “System handbook” measured during
first ignition.
All the pressure values are measured with the compensation socket disconnected.
MySMART 20 R.S.I.
Seasonal space heating energy efficiency class
A
Water heating energy efficiency class
-
Parameter
Symbol
Value
Unit
Parameter
Symbol
Value
Unit
Rated heat output
P
rated
20
kW
Seasonal space heating energy
efficiency
η
s
94
%
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
19.6
kW
At rated heat output and high-
temperature regime (*)
η
4
88.6
%
At 30% of rated heat output and
low-temperature regime (**)
P1
6.6
kW
At 30% of rated heat output and low-
temperature regime (**)
η1
98.7
%
Auxiliary electricity consumption
Other parameters
At full load
elmax
31.8
W
Stand-by heat loss
Pstby
26.0
W
At part load
elmin
14.8
W
Pilot flame energy consumption
Pign
-
W
In Stand-by mode
P
SB
2.4
W
Annual energy consumption
QHE
34
GJ
Sound power level, indoors
LWA
51
dB
Emissions of nitrogen oxides
NOx
29
mg/kWh
For combination heaters:
Declared load profile
-
Water heating energy efficiency
η
wh
-
%
Daily electricity consumption
Q
elec
-
kWh
Daily fuel consumption
Qfuel
-
kWh
Annual electricity consumption
AEC
-
kWh
Annual fuel consumption
AFC
-
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).