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LR, LRK, LR-NT, LRK-NT 21 - 32
We reserve the right to make changes to dimensions and construction 15 edition 30.10.2007
Technical specifications LR (natural gas. low NOx)
LR 21 22 23 24 25 26 27 28 29 30 31 32
Power
Boiler nominal power qN (80/60°C)
max. 450 500 550 625 700 850 975 1100 1400 1700 2150 2600
min. 95 121 121 175 175 269 311 314 367 459 713 714
Calorific power qF
max. 491 540 597 674 759 916 1048 1190 1523 1847 2323 2831
min.
3
99 127 127 182 182 280 324 327 383 478 743 744
Modulation rate
3
20% 24% 21% 27% 24% 31% 31% 27% 25% 26% 32% 26%
Efficiencies
Overall efficiency 60 / 80 °C
100%
%
91.7 92.6 92.1 92.8 92.2 92.8 93.0 92.4 91.9 92.1 92.6 91.8
Overall efficiency 60 / 80 °C
30%
%
95.4 95.5 95.5 95.8 95.7 95.9 96.0 95.9 95.8 95.9 96.1 95.9
Overall efficiency 60 / 80 °C
min qF
%
95.6 95.7 95.7 95.8 95.8 95.9 96.0 96.0 96.0 96.0 96.1 96.0
Efficiency DIN4702-8, 60 / 75 °C
η
N
%
94.9 95.2 95.1 95.4 95.2 95.5 95.6 95.4 95.3 95.3 95.6 95.3
Mass flows
Gas flow, NG type E
max.
1,2
49.3 54.2 59.9 67.6 76.2 91.9 105.2 119.4 152.8 185.3 233.1 284.1
min.
1,2
10.0 12.9 12.9 18.1 18.1 27.4 33.5 33.5 38.5 47.8 75.9 74.9
Exhaust gas mass flow
max. wet 0.200.230.250.280.320.380.440.500.640.770.971.18
min. wet 0.040.050.050.080.080.110.140.140.160.200.320.31
Exhaust gas data, losses
Overpressure combustion chamber
max.
mbar
4.17 3.07 3.76 3.95 5.03 4.78 4.49 5.82 6.74 7.40 7.51 6.98
Exhaust gas temperature ati 80/60 °C
max. 187 169 180 166 179 166 161 174 184 181 171 186
min.
3
Exhaust gas losses at 80/60 °C
max.
%
8.0 7.2 7.7 7.0 7.6 7.0 6.8 7.4 7.9 7.8 7.3 8.0
Stand-by loss qB
70 °C
W
781 883 883 1021 1021 1178 1382 1382 1565 1742 2073 2330
Hydraulic data
Water resistance
Δt=10K
30 37 45 59 73 108 58 74 120 85 136 63
Δt=20K
8 9 11 15 18 27 15 19 30 21 34 16
Water flow
max. 38.7 47.3 47.3 60.1 60.1 73.0 94.5 94.5 120.3 146.1 184.7 223.4
Operating temperatures
max.
SCO
Values acc. EN303-3 at:
3zugskessel, V-07/06
- lamda=1.15, CO2=10%
GB
- T-air=20°C, rel. humidity=60%, p-baro=100kPa
1: LCV = 9.97 kWh/nm3
2: nm3 at 0°C, 1013 mbar
3: S max = 10 mg / nm3
110
95
95
°C
m3/h
mbar
°C
kW
kW
kg/s
nm
3
/h
90
100
110
120
130
140
150
160
170
180
190
200
210
0 500 1000 1500 2000 2500 3000
QN [kW]
[°C]
GB
LR21
LR22
LR23
LR24
LR25
LR26
LR27
LR28
LR29
LR30
LR31
LR32
Flue gas temperature diagram LR, low-NOx and natural gas with clean boiler
© Copyright YGNIS AG CH-Ruswil
17


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