10
GENERAL INFORMATION
GENERAL INFORMATION
Technical specifications
DESCRIPTION
BOILER TAU N PREMIX
115
150
210
270
350
Device type
Condensing boiler for central heating
B23 - B23P(*)
Fuel
All gas fuels
Device category
See Burner
Rated heat input (Qmax) HCV (LCV)
127,6
(115)
166,5
(150)
233,1
(210)
299,7
(270)
388,5
(350)
kW
Rated heat input (Qmin) HCV (LCV)
88,8
(80)
123,2
(111)
167,6
(151)
234,2
(211)
300,8
(271)
kW
Useful (rated) heat output
112
147
205
264
344
Rated maximum useful heat output (80/60°C) P4
112,4
146,6
205,2
264,3
343,7
kW
Rated min. useful heat output (80/60°C) (Pn min)
78,4
108,2
147,5
207,2
266,4
kW
30% heat output with return at 30°C (P1)
33,7
44,0
61,6
79,3
103,1
kW
Seasonal energy efficiency
η
s
92
92
93
93
93
%
Efficiency at rated heat input in high temperature
mode
η
4 (80-60°C) HCV (LCV)
88,0
(97,7)
88,0
(97,7)
88,0
(97,7)
88,2
(97,9)
88,5
(98,2)
%
Useful efficiency at Pn min (80/60°C) HCV (LCV)
88,3
(98,0)
87,8
(97,5)
88,0
(97,7)
88,5
(98,2)
88,6
(98,3)
%
Efficiency at 30% rated heat input in low tempera-
ture mode
η
1 with return at 30°C (HCV)
97,6
(108,3)
97,7
(108,5)
98,5
(109,3)
98,4
(109,2)
97,9
(108,7)
%
Losses from stack for sensible heat (Qmax)
1,7
1,7
1,7
1,5
1,5
%
Losses from casing with burner on
0,3
0,3
0,3
0,5
1,0
%
Constant pressure drop
300
300
420
540
700
W
Flue gas temperature (
∆
T)
< 45÷75 (**)
°C
Emissions at max. heat input Nox (0% O2)
70
< 60
mg/kWh
Emissions at max. heat input CO
0
mg/kWh
Flue gas mass flow rate (Qmax)
0,05
0,07
0,09
0,12
0,15
kg/sec
Furnace pressure
2,2
2,0
2,7
3,2
4,6
mbar
Furnace volume
172
172
172
241
279
dm³
Tot. volume of flue gas side
246
272
292
413
482
dm³
Heat exchange surface area
7,0
8,2
10,4
13,0
16,3
m²
Volumetric heat load (Qmax)
669
872
1221
1120
1254
kW/m³
Specific heat load
16,2
18
19,9
20,4
20,9
kW/m²
Maximum condensate production
11,0
18,4
27,4
31,9
40,9
l/h
Maximum working pressure
6
bar
Maximum permitted temperature
110
°C
Maximum operating temperature
95
°C
Pressure drop
∆
T 10°C
50
43,2
36,0
54,0
46,4
mbar
Pressure drop
∆
T 20°C
12,5
11,3
10,2
16,3
13,4
mbar
Water capacity
375
360
323
495
555
l
Consumption at full load (Elmax)
440
400
430
450
1050
W
Consumption at part load (Elmin)
130
140
160
180
250
W
Electrical consumption in standby mode (PSB)
20
20
20
20
20
W
(*)
The B23P configuration may only be adopted with premix gas burners.
(**)
Depends on return temperature (30-60°C)
9
The stack must guarantee the minimum draught specified by applicable technical standards, assuming zero pressure at the
connection to the flue.
9
Values obtained with reference burners (R) used for the performance verification tests (see burner pairing table), calibrated with
CO2 = 9,7% and
λ
= 1,2.
