Table of Contents
Advertisement
3 Technical specifications
Product name
Low-temperature boiler
(1)
B1 boiler
Cogeneration space heater
Combination heater
Rated heat output
Useful heat output at rated heat output and high tem
perature regime
(2)
Useful heat output at 30% of rated heat output and low
temperature regime
(1)
Seasonal space heating energy efficiency
Useful efficiency at rated heat output and high temper
ature regime
(2)
Useful efficiency at 30% of rated heat output and low
temperature regime
(1)
Auxiliary electricity consumption
Full load
Part load
Stand-by
Other characteristics
Standby heat loss
Ignition burner power consumption
Annual energy consumption
Sound power level, indoors
Emissions of nitrogen oxides
(1) 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).
(2) High temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
Tab.4
General
Useful output Pn - at 80/60°C
Heating mode
Nominal input Qn - Hi
Heating mode
Efficiency Hi - 100% Pn - Average temperature 70°C
Heating mode under full load
Efficiency Hi - 30% Pn - Average temperature 40 °C
Heating mode under part load
Nominal water flow rate at Pn and ΔT = 20K
Standby losses Pstby at ΔT = 30K
Loss through the outer casing at Δt = 30K
Tab.5
Hydraulic specifications
Water content (excluding expansion vessel)
10
EFU
Prated
kW
P
kW
4
P
kW
1
ƞ
%
s
ƞ
%
4
ƞ
%
1
elmax
kW
elmin
kW
P
kW
SB
P
kW
stby
P
kW
ign
Q
GJ
HE
L
dB
WA
NO
mg/kWh
X
See
The back cover for contact details.
Unit
kW
kW
%
%
m
W
%
Unit
litre
EFU 36
EFU 46
Yes
Yes
No
No
No
No
No
No
37
46
37.2
46.4
11.6
14.5
86
86
87.3
86.9
90.9
90.7
0.156
0.160
0.064
0.066
0.004
0.004
0.109
0.122
--
--
124
154
57
65
105
105
EFU 36
37.2
40
93.1
97
1.602
3
/h
109
86
EFU 36
35.5
7642066 - v01 - 29092015
EFU 46
46.4
50
92.7
96.7
1.994
122
85
EFU 46
41
Advertisement
Table of Contents
