MELBURY HE 3800-10000 -
Installation, Use and Maintenance
Page 18 / 36
410821-V11
Technical specifications Melbury HE, natural gas
Melbury HE
3800
4500
5400 6300
7400 8600 10000
POWER
Boiler nominal power qN
(80/60°C)
max.
kW
3800
4500
5400
6300
7400
8600 10000
min.
880
1160
1473
1582
1935
2332 2907
Calorific power qF
max.
kW
4166
4929
5894
6861
8055
9328 10795
min.
(3)
916
1208
1532
1647
2014
2425 3023
Modulation rate at 80/60°C
(3)
%
22
25
26
24
25
26
28
EFFICIENCIES
Overall efficiency 60/80°C
100%
%
91.2
91.3
91.6
91.8
91.9
92.2
92.6
Overall efficiency 60/80°C
30%
%
95.7
95.8
95.9
95.8
95.8
95.9
96.1
Overall efficiency 60/80°C
min qF
%
96.1
96.1
96.1
96.1
96.1
96.1
96.2
Efficiency DIN4702-8, 60/75°C
ɳ
N
%
95.1
95.1
95.3
95.3
95.3
95.4
95.6
MASS FLOW
Gas flow, NG type E
max.
(1) (2)
nm
3
/h
418.0
494.6 591.4
689.0
808.0
936.0 1083.0
min.
(1) (2)
92.0
121.2 153.8
165.0
202.0
243.0 303.0
Exhaust gas mass flow
max. wet
kg/s
1.74
2.06
2.46
2.87
3.36
3.89
4.51
min. wet
(1) (3)
0.38
0.50
0.64
0.69
0.84
1.01
1.26
EXHAUST GAS DATA, LOSSES
Overpressure combustion chamber
max.
mbar 11.01
10.18
10.91
12.46
14.4 16.03 17.48
Exhaust gas temperature
at 80/60°C
max.
°C
199
197
191
186
185
179
170
min.
(3)
95
Exhaust gas losses at 80/60°C
max.
%
8.7
8.6
8.3
8.1
8.0
7.7
7.3
Stand-by loss qB
70°C
W
2724
3413
3827
4511
5118
5582
6043
HYDRAULIC DATA
Water resistance
∆
t=15K
mbar
78
109
157
84
116
80
108
∆
t=20K
44
62
89
47
65
45
61
Water flow
max.
m
3
/h
218
258
309
361
424
493
573
mini
P/45 (P = Power in th / h provided at time t.)
Operating temperatures
max.
°C
95
SCO
110
Values acc. EN303-3 at:
- lambda = 1.15, CO
2
= 10%
- T-air = 20 °C, rel. humidity = 60%, p-baro = 100 kPa
(1)
: LCV = 9.97 kWh/nm
3
(2)
: nm
3
at 0°C, 1013 mbar
(3): S max = 10 mg / nm
3
figure 6 - Flue gas temperature diagram Melbury HE, natural gas with clean boiler