101
Gas boiler, type B and C, category II
2N3P
Type
B1KF-26
B1KF-30
B1KF-35
Rated heating output range (details to EN 15502)
T
F
/T
R
= 50/30 °C
Natural gas
kW
3.2 (5.7
*1
) -
25.0
3.2 (5.7
*1
) -
25.0
3.2 (5.7
*1
) -
32.0
LPG
kW
3.2 - 25.0
3.2 - 25.0
3.2 - 32.0
T
F
/T
R
= 80/60 °C
Natural gas
kW
2.9 (5.2
*1
) -
23.0
2.9 (5.2
*1
) -
23.0
2.9 (5.2
*1
) -
29.3
LPG
kW
2.9 - 23.0
2.9 - 23.0
2.9 - 29.3
Flue gas parameters
Temperature
(at a return temperature of 30 °C)
–
At rated heating output
°C
41
46
59
–
At partial load
°C
38
38
38
Temperature
(at a return temperature of 60 °C, for DHW
heating)
°C
65
67
72
Mass flow rate
(for DHW heating)
Natural gas
–
At rated heating output
kg/
h
31.7
41.6
54.9
–
At partial load
kg/
h
5.6 (9.8
*1
)
5.6 (9.8
*1
)
5.6 (9.8
*1
)
LPG
–
At rated heating output
kg/
h
30.1
41
53.9
–
At partial load
kg/
h
3.9
3.9
3.9
Available draught
*3
Pa
250
250
250
mb
ar
2
2
2
Max. amount of condensate
To DWA-A 251
l/h
3.7
4.3
4.9
Condensate connection (hose nozzle)
Ø
mm
20 - 24
20 - 24
20 - 24
Flue gas connection
Ø
mm
60
60
60
Ventilation air connection
Ø
mm
100
100
100
Standard seasonal efficiency [to DIN] at
T
F
/T
R
= 40/30 °C
%
Up to 98 (H
s
) [gross cv]
Energy efficiency class
A
A
A
Note
The supply values are only for reference (e.g. in the
gas contract application) or for a supplementary, rough
estimate to check the volumetric settings. Due to fac-
tory settings, the gas pressure must not be altered
from these values. Reference: 15 °C, 1013 mbar
(101.3 kPa).
*1
Appliances for multiple connection of type B1HF-[kW]-M and B1KF-[kW]-M
*3
CH: The appliance has the following positive pressure (in Pascal) at the flue gas outlet: 200 Pa (2.0 mbar)
Specification
Specification
(cont.)
6167586
Service
