2.3 Specification
Gas boiler, type B
11
/B
11 BS
, category II
2ELL3 P
Rated output kW 29 35 42 48 60
Rated heat input kW 32.0 38.6 46.4 53.0 66.2
Heating surface
m
2
1.99 2.46 2.93 3.40 4.35
U-value of thermal insulation
W/m
2
K
0.45 0.45 0.45 0.45 0.45
Product ID CE-0085 AS 0297
Gas supply pressure (nominal pressure)
Natural gas mbar 20 20 20 20 20
LPG mbar 30 30 30 30 30
Max. permissible gas supply pressure
Natural gas mbar 25 25 25 25 25
LPG mbar 57.5 57.5 57.5 57.5 57.5
Total dimensions (height is given incl. 13 mm adjust-
able feet)
Length mm 580 580 580 580 580
Total length c mm 760 780 780 780 780
Width a mm 596 706 796 886 1076
Total width b mm 650 760 850 940 1130
Height without control unit mm 788 788 788 788 788
Height with control unit mm 890 890 890 890 890
Height with flue pipe bend d mm 1025 1025 1025 1095 1095
Plinth height mm 250 250 250 250 250
Total weight
Boiler with thermal insulation, burner and boiler control
unit
kg 142 164 188 211 257
Content boiler water litres 11.7 13.8 15.9 17.9 21.9
Permiss. operating pressure bar 3 3 3 3 3
Boiler connections
Boiler flow and return G 1½ 1½ 1½ 1½ 1½
Drain R ¾ ¾ ¾ ¾ ¾
Gas connection R ½ ½ ½ ½ ½
Connection values
in relation to the max. load
Natural gas E
m
3
/h
3.39 4.09 4.91 5.61 7.01
Natural gas LL
m
3
/h
3.94 4.75 5.71 6.52 8.15
LPG kg/h 2.50 3.02 3.62 4.14 5.17
Flue gas parameters
(calculation values for sizing the flue gas system to
EN 13384)
Flue gas temperatures
(gross values, measured at 20 °C combustion air tem-
perature)
50 °C boiler water temperature
(actual values are significant for the sizing of the flue
system)
°C 102 101 114 114 109
80 °C boiler water temperature
(actual values for determining the application range of
flue gas lines with max. permissible operating tempera-
tures)
°C 118 113 130 130 122
Mass flow rate
Natural gas kg/h 92 107 105 127 160
at CO
2
content % 5.0 5.2 6.5 6.1 6.0
LPG kg/h 84 95 101 126 153
at CO
2
content % 6.2 6.7 7.6 6.9 7.1
Required draught Pa 3 3 3 3 3
mbar 0.03 0.03 0.03 0.03 0.03
Flue gas connection Ø mm 150 150 150 180 180
Seasonal efficiency [to DIN]
T
V
/T
R
= 75/60 °C
% 83 (H
s
)/92 (H
i
)
Standby heat loss at 60 °C boiler water temperature % 1.1 1.0 0.9 0.8 0.8
Further connection dimensions
Internal diameter of pipe to expansion vessel DN 20 20 20 20 20
R ¾ ¾ ¾ ¾ ¾
Safety valve DN 15 15 15 15 15
R ½ ½ ½ ½ ¾
Blow-off line DN 20 20 20 20 25
R ¾ ¾ ¾ ¾ 1
Vitogas 100-F
(cont.)
12
VIESMANN
VITOGAS
2
5822 428 GB
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