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3 About the unit
3.4
Technical specifications
Technical specifications
Heat Input Range(Qn)
Nominal Heat Output Range (Pn) at 80-60°C
Nominal Heat Output Range (Pn) at 50-30°C
Efficiency (30% partial load at 30°C return temperature)
Central Heating Circuit
Operating Pressure (min./max.)
Heating Circuit Temperature Interval (min./max.)
Domestic Hot Water Circuit
Hot Water Amount DT: 30°C
Hot Water Amount DT: 35°C
Comfort Class (EN13203)
Water Installation Pressure (min./max.)
Domestic Hot Water Temperature Interval (min./max.)
Domestic Hot Water Circuit Type
General
Expansion Vessel Initial Pressure
Expansion Vessel Capacity
Electrical Connection
Electrical Power Consumption (max.)
Standby Electrical Power Consumption
IP Rating
Boiler Weight
Boiler Dimensions (Height × Width × Depth)
Flue outlet diameter
Combustion specifications
Gas Category
Nominal Gas Inlet Pressure (G20/G25/G31)
G20 Gas Inlet Pressure (min./max.)
G25 Gas Inlet Pressure (min./max.)
G31 Gas Inlet Pressure (min./max.)
Natural Gas (G20) Consumption (min./max.)
Natural Gas (G25) Consumption (min./max.)
LPG (G31) Consumption (min./max.)
Combustion products mass flow rate (min./max.) (G20)
Combustion products mass flow rate (min./max.) (G31)
Combustion products temperature (min./max.) (G20)
Combustion products temperature (min./max.) (G31)
CO
Emission at nominal and minimum heat input (G20)
2
CO
Emission at nominal and minimum heat input (G31)
2
NOx Class
(a)
20 / 30 for Hungary
Energy-related products (ErP) specifications
Model
Condensing boiler
Low-temperature
(b)
boiler
B1 boiler
Cogeneration space heater
Combination heater
Central heating efficiency class
Rated heat output
Useful heat output at rated heat output and high-temperature regime
Useful heat output at 30% of rated heat output and low-temperature regime
Seasonal space heating energy efficiency
Useful efficiency at rated heat output and high-temperature regime
Useful efficiency 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
Annual energy consumption
Sound power level, indoors (at maximum heat input)
Emissions of nitrogen oxides
Domestic hot water parameters
Declared load profile
Daily electricity consumption
Installation manual
8
Unit
kW
kW
kW
%
bar
°C
l/min
l/min
—
MPa
°C
—
bar
l
V AC/Hz
W
W
—
kg
mm
mm
Unit
—
mbar
mbar
mbar
mbar
m³/h
m³/h
m³/h
g/s
g/s
°C
°C
%
%
—
Symbol
—
—
—
—
—
—
—
P
rated
(a)
P
4
(b)
P
1
η
s
(a)
η
4
(b)
η
1
el
max
el
min
P
SB
P
stby
P
ign
Q
HE
L
WA
NO
x
—
Q
elec
D2CND028A*AB
D2CND035A*AB
4.8~27.0
4.8~34.0
4.6~26.3
4.6~33.2
5.2~28.2
5.2~35.0
108.9
108.7
0.6 / 3.0
30 / 80
14
16
12
14
***
0.05 / 1
35 / 60
instantaneous
230/50
92
112
IPX5D
37
695 × 440 × 295
60 / 100
D2CND028A*AB
D2CND035A*AB
II
20 / 37
17 / 25
20 / 31
25 / 45
0.51 / 2.89
0.51 / 3.63
0.59 / 3.32
0.59 / 4.19
0.2 / 1.09
0.2 / 1.38
2.2 / 12.35
2.2 / 15.47
2.2 / 12.02
2.2 / 15.22
57.5 / 76.4
57.5 / 81.7
57.5 / 74.5
57.2 / 80.2
8.8±0.8
11.3 / 10.2±1.0
Unit
D2CND028A*AB
D2CND035A*AB
—
D2CND028
D2CND035
—
YES
YES
—
NO
NO
—
NO
NO
—
NO
NO
—
YES
YES
—
kW
26
33
kW
26.3
33.2
kW
8.8
11.1
%
%
87.8
87.9
%
98.1
97.9
kW
0.0356
0.0547
kW
0.0098
0.0111
kW
kW
kW
GJ
48
58
dB
49
52
mg/kWh
36
35
—
XL
kWh
0.153
0.204
D2CND028+035A1/4AB + D2TND028+035A4AB
D2TND028A4AB
D2TND035A4AB
4.8~27.0
4.8~34.0
4.6~26.3
4.6~33.2
5.2~28.2
5.2~35.0
108.9
108.7
—
—
—
—
storage tank
1
10
92
112
2.7
35.5
D2TND028A4AB
D2TND035A4AB
2N3P
(a)
0.51 / 2.89
0.51 / 3.63
0.59 / 3.32
0.59 / 4.19
0.2 / 1.09
0.2 / 1.38
2.2 / 12.35
2.2 / 15.47
2.2 / 12.02
2.2 / 15.22
57.5 / 76.4
57.5 / 81.7
57.5 / 74.5
57.2 / 80.2
6
D2TND028A4AB
D2TND035A4AB
D2TND028
D2TND035
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
****/A
26
33
26.3
33.2
8.8
11.1
93
87.8
87.9
98.1
97.9
0.0356
0.0547
0.0098
0.0111
0.003
0.0651
—
48
58
49
52
36
35
—
—
Wall-mounted condensing boiler
3P469346-5N – 2019.11
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