Technical Data - Benchmark Alpha E-Tec Plus 28 Installation And Servicing Instruction

Wall mounted, fan assisted, room sealed, gas fired, high efficiency condensing combination boiler
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3

TECHNICAL DATA

3.1
TECHNICAL PERFORMANCE DATA - NATURAL GAS (Cat I2H 2H - G20 20 mbar)
Heat input gross - DHW
Heat input gross - CH
Heat input net - DHW
Heat input net - CH
Heat output condensing (50/30°C) - CH
Heat output non condensing (80/60°C) CH
Heat output min. - CH
Heat output nominal - DHW
Gas rate at max. output
Gas supply pressure
Max. CH temperature - Set point
Gas burner injector diameter
DHW flow rate at 35°C rise
DHW flow rate at 30°C rise - EN13203-1
Dry NOx weight (net calorific value)
Dry NOx
NOx
Factory set CO
2
CO
at maximum CH output
2
CO
at maximum DHW output
2
CO
at minimum output
2
CO (max)
Maximum CO/CO
2
SAP/SEDBUK seasonality efficiency 2005
SAP/SEDBUK seasonality efficiency 2009
ErP DHW efficiency
ErP Seasonal space heating efficiency
Max. primary system pressure
Min. primary system pressure
Recommended system pressure - Cold
System pressure relief valve setting
Expansion vessel size
Expansion vessel charge pressure
Electrical power consumption - Max.
Electrical power consumption - Standby
Max. temperature of combustion products
Max. flue overheating temperature
Ambient operating temperature
Category
Type of installation
3.2
TECHNICAL PERFORMANCE DATA - LPG - PROPANE GAS (Cat I3P 3P - G31 37 mbar)
Heat input gross - DHW
Heat input gross - CH
Gas supply pressure
Gas burner injector
CO
at maximum CH output
2
CO
at maximum DHW output
2
CO
at minimum output
2
Gas rate at maximum output
Note: OtherTechnical data is the same as NG data.
6
Alpha E-Tec Plus 28, 33 and 38 - Technical Data
E-Tec Plus 28
kW
32.0
kW
27.3
kW
28.8
kW
24.6
kW
26.1
kW
24.1
kW
4.3
kW
28.3
m³/h
3.05
mbar
20
°C
85
mm
5.00
l/min
12.1
l/min
14.1
mg/kWh
35
ppm
20
Class
6
%
9.7
%
9.7 (+0.5/-0.2%)
%
8.8 (+0.2/-0.3%)
ppm
450
Ratio
0.004
%
90.1
%
88.9
%
87 (XL)
%
93
bar (MPa)
2.5 (0.25)
bar (MPa)
0.5 (0.05)
bar (MPa)
1.0 (0.1)
bar (MPa)
3.0 (0.3)
litres
8.0
bar (MPa)
1.0 (0.1)
Watts
80
Watts
2
°C
75
°C
120
°C
-5 to +50
II 2H3P
C13, C33, C43, C53, C63, C83, C93
E-Tec Plus 28
kW
31.3
kW
26.7
mbar
37
mm
3.80
%
11.4
%
11.4 (+0.1/-0.3)
%
10.6 (+0.3/-0.1)
kg/h (g/s)
2.24 (0.62)
E-Tec Plus 33
E-Tec Plus 38
36.2
43.3
31.7
36.3
32.6
39
28.6
32.7
29.7
34.4
28
32
4.9
6.1
32
37.9
3.45
4.13
20
20
85
85
6.00
6.70
14.1
15.9
16.5
18.6
30
39
17
22
6
6
9.5
9.2
9.5 (±0.2%)
9.2 (+0.4/-0.2%)
8.6 (+0.2/-0.3%)
8.5 (+0.1/-0.3%)
450
450
0.004
0.004
90.2
90.2
89.0
89.0
87 (XL)
85 (XL)
93
93
2.5 (0.25)
2.5 (0.25)
0.5 (0.05)
0.5 (0.05)
1.0 (0.1)
1.0 (0.1)
3.0 (0.3)
3.0 (0.3)
8.0
8.0
1.0 (0.1)
1.0 (0.1)
105
120
2
2
75
75
120
120
-5 to +50
-5 to +50
II 2H3P
II 2H3P
E-Tec Plus 38
E-Tec Plus 33
35.4
42.4
31.1
35.5
37
37
4.30
4.90
11.2
10.85
11.2 (+0.2/-0.4)
10.9 (+0.4/-0.2%)
10.0 (+0.4/-0.2)
9.9 (+0.4/-0.2%)
2.53 (0.70)
3.03 (0.84)

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