117
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
Supply voltage
V DC
24
Power consumption
W
4
Permissible ambient temperature
■
During operation
°C
+5 to +35
■
During storage and transport
°C
-5 to +60
Electronic temperature limiter setting
(TN)
°C
91
Electronic temperature cut-out setting
°C
110
Weight excl. heating water
kg
111.5
Permiss. operating pressure, heating wa-
ter side (PMS)
bar
MPa
3
0.3
Weight
–
Excl. heating water and DHW
kg
111.5
111.5
111.5
–
Incl. heating water and DHW
kg
Water capacity
(excl. diaphragm expansion
vessel)
l
3.0
3.0
3.0
Max. flow temperature
°C
82
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
818
1076
1374
Expansion vessel
Capacity
l
18
18
18
Pre-charge pressure
bar
0.75
0.75
0.75
kPa
75
75
75
Permiss. operating pressure
bar
3
3
3
MPa
0.3
0.3
0.3
Connections
(with connection accessories)
Boiler flow and return
R
¾
¾
¾
Cold water and DHW
R
½
½
½
DHW circulation
R
½
½
½
Dimensions
Length
mm
595
595
595
Width
mm
600
600
600
Height
mm
1400
1400
1400
Gas connection
(with connection accesso-
ries)
R
½
½
½
Specification
Specification
(cont.)
6151778
Service
