Operating Instructions and Installation Instructions

LR, LRK, LR-NT, LRK-NT 21 - 32
We reserve the right to make changes to dimensions and construction 11 edition 30.10.2007
Technical specifications LR (natural gas)
LR 21 22 23 24 25 26 27 28 29 30 31 32
Power
Boiler nominal power qN (80/60°C)
max. 530 580 630 700 800 895 1150 1300 1650 1900 2500 3000
min. 95 121 121 175 175 269 311 314 367 459 713 714
Calorific power qF
max. 585 632 691 759 876 967 1248 1422 1815 2079 2725 3300
min.
3
99 127 127 182 182 280 324 327 383 478 743 744
Modulation rate
3
17% 20% 18% 24% 21% 29% 26% 23% 21% 23% 27% 23%
Efficiencies
Overall efficiency 60 / 80 °C
100%
%
90.7 91.8 91.3 92.2 91.4 92.5 92.2 91.4 90.9 91.4 91.7 90.9
Overall efficiency 60 / 80 °C
30%
%
95.2 95.5 95.4 95.7 95.6 95.9 95.8 95.7 95.5 95.7 96.0 95.6
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
%
94.6 95.0 94.9 95.2 95.0 95.4 95.3 95.1 94.9 95.1 95.4 95.0
Mass flows
Gas flow, NG type E
max.
1,2
58.7 63.4 69.3 76.2 87.9 97.0 125.2 142.7 182.1 208.6 273.4 331.1
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 0.24 0.26 0.29 0.32 0.37 0.40 0.52 0.59 0.76 0.87 1.14 1.38
min. wet 0.04 0.05 0.05 0.08 0.08 0.11 0.14 0.14 0.16 0.20 0.32 0.31
Exhaust gas data, losses
Overpressure combustion chamber
max.
mbar
5.97 4.22 5.06 5.03 6.74 5.33 6.41 8.39 9.67 9.43 10.35 9.50
Exhaust gas temperature ati 80/60 °C
max. 209 187 197 179 196 172 179 194 205 195 188 205
min.
3
Exhaust gas losses at 80/60 °C
max.
%
9.1 8.0 8.5 7.6 8.4 7.3 7.7 8.4 9.0 8.5 8.2 9.0
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
42 50 59 73 96 120 81 103 167 106 184 84
Δt=20K
11 13 15 18 24 30 20 26 42 27 46 21
Water flow
max. 45.5 54.1 54.1 68.7 68.7 76.9 111.7 111.7 141.8 163.2 214.8 257.8
Operating temperatures
max.
SCO
Values acc. EN303-3 at:
3zugskessel, V-07/06
- lamda=1.15, CO2=10%
GG
- 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]
GG
LR21
LR22
LR23
LR24
LR25
LR26
LR27
LR28
LR29
LR30
LR31
LR32
Flue gas temperature diagram LR, natural gas with clean boiler
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