Operating Instructions and Installation Instructions

LR, LRK, LR-NT, LRK-NT 21 - 32
We reserve the right to make changes to dimensions and construction 19 edition 30.10.2007
Technical specifications LR-NT (natural gas)
LR-NT 212223242526272829303132
Power
Boiler nominal power qN (80/60°C)
max. 530 580 630 700 800 895 1150 1300 1650 1900 2500 2750
min. 89 115 115 145 145 232 287 287 331 419 629 633
Calorific power qF
max. 593 639 700 767 887 981 1266 1446 1851 2116 2781 3085
min.
3
94 120 120 152 152 242 299 299 345 437 654 660
Modulation rate
3
16% 19% 17% 20% 17% 25% 24% 21% 19% 21% 24% 21%
Efficiencies
Overall efficiency 60 / 80 °C
100%
%
89.4 90.8 90.1 91.3 90.3 91.2 90.9 89.9 89.1 89.9 89.9 89.2
Overall efficiency @ tm = 58 °C
30%
%
95.6 95.9 95.8 96.1 96.0 96.1 96.1 96.0 95.8 96.1 96.2 96.0
Overall efficiency 60 / 80 °C
min qF
%
95.5 95.6 95.6 95.7 95.7 95.9 95.9 95.9 95.9 96.0 96.1 96.0
Efficiency DIN4702-8, 60 / 75 °C
η
N
%
94.2 94.7 94.5 95.0 94.7 95.1 95.0 94.7 94.4 94.7 94.8 94.5
Mass flows
Gas flow, NG type E
max.
1,2
59.5 64.2 70.2 77.0 89.0 98.4 127.1 145.1 185.8 212.4 279.0 309.5
min.
1,2
9.4 12.0 12.0 15.2 15.2 24.3 30.0 30.0 34.6 43.8 65.6 66.2
Exhaust gas mass flow
max. wet 0.25 0.27 0.29 0.32 0.37 0.41 0.53 0.60 0.77 0.88 1.16 1.29
min. wet 0.04 0.05 0.05 0.06 0.06 0.10 0.12 0.12 0.14 0.18 0.27 0.28
Exhaust gas data, losses
Overpressure combustion chamber
max.
mbar
6.48 4.54 5.46 5.41 7.29 5.96 7.12 9.38 10.94 10.56 11.50 8.57
Exhaust gas temperature ati 80/60 °C
max. 236 208 221 198 219 198 206 226 241 228 226 241
min.
3
Exhaust gas losses at 80/60 °C
max.
%
10.4 9.0 9.7 8.6 9.6 8.6 9.0 10.0 10.7 10.1 10.0 10.7
Stand-by loss qB
70 °C
W
781 883 883 1020 1020 1178 1382 1382 1565 1742 2073 2330
Hydraulic data
Water resistance
Δt=10K
42 50 59 73 96 120 81 103 167 106 184 70
Δt=20K
11 13 15 18 24 30 20 26 42 27 46 18
Water flow
max. 45.5 54.1 54.1 68.7 68.7 76.9 111.7 111.7 141.8 163.2 214.8 236.3
Operating temperatures
max.
SCO
Values acc. EN303-3 at:
3zugskessel, V-09/07
- lamda=1.15, CO2=10%
NT-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
kW
kW
kg/s
nm
3
/h
°C
m3/h
mbar
°C
110
95
95
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
0 500 1000 1500 2000 2500 3000
QN [kW]
[°C]
GG
LR-NT21
LR-NT22
LR-NT23
LR-NT24
LR-NT25
LR-NT26
LR-NT27
LR-NT28
LR-NT29 LR-NT30 LR-NT31
LR-NT32
Flue gas temperature diagram LR-NT, natural gas with clean boiler
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