Operating Instructions and Installation Instructions

LR, LRK, LR-NT, LRK-NT 21 - 32
We reserve the right to make changes to dimensions and construction 13 edition 30.10.2007
Technical specifications LR (natural gas, ECA-rating)
LR 21 22 23 24 25 26 27 28 29 30 31 32
Power
Boiler nominal power qN (80/60°C)
max. 370 460 460 600 600 820 1000 1000 1150 1430 1955 2165
min. 95 121 121 175 175 269 311 314 367 459 713 714
Calorific power qF
max. 398 495 495 645 645 882 1075 1075 1236 1538 2100 2329
min. 99 127 127 182 182 280 324 327 383 478 743 744
Modulation rate
25% 26% 26% 28% 28% 32% 30% 30% 31% 31% 35% 32%
Efficiencies
Overall efficiency 60 / 80 °C
100%
%
93.0 93.0 93.0 93.0 93.0 93.0 93.0 93.0 93.0 93.0 93.0 93.0
Overall efficiency 60 / 80 °C
30%
%
95.4 95.5 95.5 95.8 95.8 95.9 95.9 95.9 96.0 96.0 96.1 96.0
Mass flows
Gas flow, NG type E
max.
1,2
39.9 49.7 49.7 64.7 64.7 88.5 108.0 108.0 124.0 154.3 210.7 233.8
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 0.170.210.210.270.270.370.450.450.520.640.880.97
min. wet 0.040.050.050.080.080.110.140.140.160.200.320.31
Exhaust gas data, losses
Overpressure combustion chamber
max.
mbar
2.74 2.58 2.58 3.62 3.62 4.43 4.74 4.74 4.41 5.09 6.11 4.73
Exhaust gas temperature ati 80/60 °C
max. 163 161 161 162 162 162 163 163 162 162 161 163
min.
3
Exhaust gas losses at 80/60 °C
max.
%
6.8 6.7 6.7 6.8 6.8 6.8 6.8 6.8 6.8 6.9 6.8 6.9
Stand-by loss qB
70 °C
W
781 883 883 1020 1020 1177 1382 1382 1565 1742 2073 2330
Hydraulic data
Water resistance
Δt=10K
21 32 32 54 54 101 61 61 81 60 113 44
Δt=20K
5 8 8 14 14 25 15 15 20 15 28 11
Water flow
max. 31.8 39.5 39.5 51.6 51.6 70.5 85.9 85.9 98.8 122.9 168.0 186.0
Operating temperatures
max.
SCO
Values acc. EN303-3 at:
3zugskessel, V-07/06
- lamda=1.15, CO2=10%
G-ECA
- 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
0 250 500 750 1000 1250 1500 1750 2000 2250 2500
QN [kW]
[°C]
G-ECA
LR22
LR24
LR26
LR27
LR29 LR30
LR31
LR32
LR21 LR23 LR25 LR28
Flue gas temperature diagram LR, ECA-rating, natural gas with clean boiler
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