89
Gas boiler, type B and C, category I
2N
/I
2H
Type
B0KA
BPKA
Rated heating output range (details to EN 15502)
T
F
/T
R
= 50/30 °C
Natural gas
kW
3.2 (7.0
*1
) - 19.0
3.2 (7.0
*1
) - 25.0
T
F
/T
R
= 80/60 °C
Natural gas
kW
2.9 (6.3
*1
) - 17
2.9 (6.3
*1
) - 22.5
Weight
■
Excl. heating water and packaging
kg
35
35
■
Incl. heating water
kg
41
41
Water capacity
(excl. diaphragm expansion vessel)
l
3.0
3.0
Max. flow temperature
°C
82
82
Max. flow rate
(Limit for the use of hydraulic separation)
l/h
See residual head graphs
Nominal circulating water volume
At T
F
/T
R
= 80/60 °C
l/h
752
988
Diaphragm expansion vessel
Capacity
l
8
8
Pre-charge pressure
bar
kPa
0.75
75
0.75
75
Permiss. operating pressure
bar
MPa
3
0.3
3
0.3
Connections (with connection accessories)
Boiler flow and return
G
¾
¾
Cold water and DHW
G
½
½
Dimensions
Length
mm
300
300
Width
mm
400
400
Height
mm
700
700
Gas connection
R
¾
¾
Supply values
Relative to the max. load and 1013 mbar/15 °C
Natural gas E
m
3
/h
1.88
2.48
Natural gas LL
m
3
/h
2.19
2.88
Flue gas parameters
Temperature
(at a return temperature of 30 °C)
–
At rated heating output
°C
41
46
–
At partial load
°C
38
38
Temperature
(at a return temperature of 60 °C, for DHW
heating)
°C
65
67
Mass flow rate
(for DHW heating)
Natural gas
–
At rated heating output
kg/h
31.7
41.6
–
At partial load
kg/h
5.6 (9.8)
5.6 (9.8)
Available draught
Pa
250
250
mbar
2.5
2.5
*1
Appliances for multiple connection of type B0KA-[kW]-M
Specification
Gas condensing combi boiler
(cont.)
6173886
Service
