118
Gas boiler, type B and C, category II
2N3P
Type
B2TF
Rated heating output range (details to EN 15502)
T
F
/T
R
= 50/30 °C (P(50/30))
Natural gas
kW
1.9 - 19
1.9 - 25
1.9 - 32
LPG
kW
2.5 - 19
2.5 - 25
2.5 - 32
T
F
/T
R
= 80/60 °C (Pn(80/60))
Natural gas
kW
1.7 - 17.5
1.7 - 23
1.7 - 29.3
LPG
kW
2.2 - 17.5
2.2 - 23
2.2 - 29.3
DHW loading cylinder
Capacity
l
100
100
100
Permiss. operating pressure (DHW side)
bar
10
10
10
MPa
1
1
1
Continuous DHW output
kW
19.74
26.53
32.50
For DHW heating from 10 to 45 °C
l/h
484.80
648.80
793.80
Performance factor N
L
*4
1.4
2.1
2.6
Initial DHW output
For DHW heating from 10 to 45 °C
l/10 min
163.70
196.20
215.50
Supply values
Relative to the max. load and
1013 mbar/15 °C
Natural gas E
m
3
/h
2.40
3.12
3.69
Natural gas LL
m
3
/h
2.79
3.63
4.29
LPG
kg/h
1.76
2.29
2.71
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)
°C
67
72
77
Mass flow rate (for DHW heating)
Natural gas
–
At rated heating output
kg/h
40.4
54.2
62.1
–
At partial load
kg/h
3.2
3.2
3.2
LPG
–
At rated heating output
kg/h
39.8
53.2
61.1
–
At partial load
kg/h
3.9
3.9
3.9
Available draught
Pa
250
250
250
mbar
2.5
2.5
2.5
Max. amount of condensate
To DWA-A 251
l/h
3.2
4.1
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
*4
At 70
º
C average boiler water temperature and cylinder storage temperature Tcyl = 60
º
C.
DHW performance factor NL depends on cylinder storage temperature Tcyl.
Standard values: Tcyl = 60
º
C
→
1.0
×
NL Tcyl = 55
º
C
→
0.75
×
NL Tcyl = 50
º
C
→
0.55
×
NL Tcyl = 45
º
C
→
0.3
×
NL.
Specification
Specification
(cont.)
6151778
Service
