01202 662500
Melbury HE Steel Shell High Efficiency Pressure Jet Boiler
- High efficiency steel shell power flame boiler.
- Available in the following kW outputs (at 80/60°C): 530, 580, 630, 700, 800, 895, 1150, 1300, 1650, 1900, 2500, 3000, 3800, 4500, 5400, 6300, 7400, 8600 and 10,000kW.
Product Information
Achieve close load matching from the 19 model range, saving on running costs.
Gain fuel savings from high efficiency performance.
No minimum water flow eliminates the need for a shunt pump, simplifying the hydraulic system design and reducing energy consumption.
Choice of fuel includes liquid biofuel for renewable energy solutions.
Low NOx burners further improve the environmental credentials of the boiler.
Large hinged door allows for easy access to maintain and service.
Extensive back up and support from our team of experienced engineers across the UK.
Long term commitment to spare parts.
Installations using models over 1MW thermal input need to comply with the Medium Combustion Plant Directive - please contact us for more information.
Ideal Uses/ Applications
New build projects.
Housing developments and flats using district heating networks.
Large commercial and public buildings including schools, hospitals, offices and hotels.
Medium sized commercial and public buildings including schools, hospitals, offices and hotels.
An environmentally friendly alternative to oil for rural locations without access to mains gas supply.
Locations with substantial and continuous heating loads including hospitals, care homes and hotels.
Optional Extras
Choose from a wide range of service contracts to help maintain optimum performance.
Book commissioning at the same time as placing your order for improved warranty terms.
Flues available
- Energy
Energy
Units
MHE530
MHE580
MHE630
MHE700
MHE800
MHE895
MHE1150
MHE1300
MHE1650
MHE1900
MHE2500
MHE3000
MHE3800
MHE4500
MHE5400
MHE6300
MHE7400
MHE8600
MHE10000
Seasonal Efficiency DIN4702-8 at 75/60°C (Nat gas)
(%) gross
85.14
85.5
85.41
85.68
85.5
85.86
85.77
85.59
85.41
85.59
85.86
85.5
85.59
85.59
85.77
85.77
85.77
85.86
86.04
Seasonal Efficiency DIN4702-8 at 75/60°C (Oil)
(%) gross
84.96
85.14
85.05
85.32
85.14
85.32
85.32
85.23
85.14
85.23
85.32
85.23
77.03
77.03
77.19
77.19
77.19
77.27
77.44
Building Regulations (L2 seasonal Efficiency) at 80/60°C (Nat gas)
(%) gross
84.91
85.32
85.16
85.53
85.32
85.73
85.6
85.39
85.16
85.39
85.66
85.24
85.36
85.45
85.57
85.54
85.55
85.68
85.89
Building Regulations (L2 seasonal Efficiency) at 80/60°C (Oil)
(%) gross
85
85.19
85.1
85.26
85.19
85.31
85.26
85.19
85.18
85.19
85.24
85.11
85.4
85.48
85.61
85.58
85.59
85.71
85.92
Boiler output at 80/60°C - max
kW
530
580
630
700
800
895
1150
1300
1650
1900
2500
3000
3800
4500
5400
6300
7400
8600
10000
Boiler output at 80/60°C - min (Nat gas)
kW
95
121
121
175
175
269
311
314
367
459
713
714
880
1160
1473
1582
1935
2332
2907
Boiler output at 80/60°C - min (Oil)
kW
211
272
272
355
355
494
582
582
680
847
1217
1272
1621
2012
2518
2930
3442
4163
5127
Equivalent MCPD Output (emission compliance) - new installation (Nat gas)
kW
N/A
N/A
N/A
N/A
N/A
830
1145
1135
1444
1728
2204
2740
3800
4500
5400
6300
7400
8600
10000
Boiler input (gross) - max (Nat gas)
kW
643.5
695.2
760.1
834.9
963.6
1063.7
1372.8
1564.2
1996.5
2286.9
2997.5
3630
4583
5422
6483
7547
8860
10261
11875
Boiler input (gross) - max (Oil)
kW
642.4
694.1
757.9
833.8
961.4
1062.6
1370.6
1562
1993.2
2283.6
2994.2
3624.5
4576
5414.2
6475.7
7537.2
8851.7
10250.9
11863.5
Boiler input net - max (Nat gas)
kW
585
632
691
759
876
967
1248
1422
1815
2079
2725
3300
4166
4929
5894
6861
8055
9328
10795
Boiler input net - max (Oil)
kW
584
631
689
758
874
966
1246
1420
1812
2076
2722
3295
4160
4922
5887
6852
8047
9319
10785
Boiler input net - min (Nat gas)
kW
99
127
127
182
182
280
324
327
383
478
743
744
916
1208
1532
1647
2014
2425
3023
- Water
Water
Units
MHE530
MHE580
MHE630
MHE700
MHE800
MHE895
MHE1150
MHE1300
MHE1650
MHE1900
MHE2500
MHE3000
MHE3800
MHE4500
MHE5400
MHE6300
MHE7400
MHE8600
MHE10000
Water content
litres
565
690
690
840
840
1020
1430
1430
1855
2170
2755
3240
3805
5385
6060
9300
11400
13300
15120
System design flow rate at 20°C ΔT rise
l/s
6.34
6.94
7.54
8.37
9.57
10.71
13.76
15.55
19.74
22.73
29.9
35.89
45.28
53.62
64.35
75.07
88.18
102.48
119.16
Waterside pressure loss at 20°C ΔT rise
mbar
11
13
15
18
24
30
20
26
42
27
46
21
44
62
89
47
65
45
61
System design flow rate at 15°C ΔT rise
l/s
12.68
13.88
15.07
16.74
19.14
21.41
27.51
31.1
39.47
45.45
59.81
71.77
60.37
71.5
85.83
100.1
117.57
136.64
158.88
Waterside pressure loss at 15°C ΔT rise
mbar
78
109
157
84
116
80
108
System design flow rate at 10°C ΔT rise
l/s
Waterside pressure loss at 10°C ΔT rise
mbar
42
50
59
73
96
120
81
103
167
106
184
84
Water flow rate - min
l/s
No min flow rate
No min flow rate
No min flow rate
No min flow rate
No min flow rate
No min flow rate
No min flow rate
No min flow rate
No min flow rate
No min flow rate
No min flow rate
No min flow rate
20.16
23.88
26.66
33.43
39.27
45.64
53.06
Water pressure operating - max
barg
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
Water pressure - min
barg
0.55
0.55
0.65
0.5
0.7
0.75
0.85
1.1
1.25
1.3
1.6
1.7
1.8
1.8
1.8
2.2
2.2
2.2
2.2
Water flow temperature - max
°C
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
Water flow temperature - min
°C
70°C Nat Gas / 70°C Propane/ 60°C Oil
70°C Nat Gas / 70°C Propane/ 60°C Oil
70°C Nat Gas / 70°C Propane/ 60°C Oil
70°C Nat Gas / 70°C Propane/ 60°C Oil
70°C Nat Gas / 70°C Propane/ 60°C Oil
70°C Nat Gas / 70°C Propane/ 60°C Oil
70°C Nat Gas / 70°C Propane/ 60°C Oil
70°C Nat Gas / 70°C Propane/ 60°C Oil
70°C Nat Gas / 70°C Propane/ 60°C Oil
70°C Nat Gas / 70°C Propane/ 60°C Oil
70°C Nat Gas / 70°C Propane/ 60°C Oil
70°C Nat Gas / 70°C Propane/ 60°C Oil
65°C Nat Gas / 75°C Propane/ 65°C Oil/75°C Heavy fuel Oil(Melbury HE )
65°C Nat Gas / 75°C Propane/ 65°C Oil/75°C Heavy fuel Oil(Melbury HE )
65°C Nat Gas / 75°C Propane/ 65°C Oil/75°C Heavy fuel Oil(Melbury HE )
65°C Nat Gas / 75°C Propane/ 65°C Oil/75°C Heavy fuel Oil(Melbury HE )
65°C Nat Gas / 75°C Propane/ 65°C Oil/75°C Heavy fuel Oil(Melbury HE )
65°C Nat Gas / 75°C Propane/ 65°C Oil/75°C Heavy fuel Oil(Melbury HE )
65°C Nat Gas / 75°C Propane/ 65°C Oil/75°C Heavy fuel Oil(Melbury HE )
Water return temperature - min
°C
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil
60°C Nat Gas /60°C Propane/ 50°C Oil/60°C Heavy fuel oil (Melbury HE)
60°C Nat Gas /60°C Propane/ 50°C Oil/60°C Heavy fuel oil (Melbury HE)
60°C Nat Gas /60°C Propane/ 50°C Oil/60°C Heavy fuel oil (Melbury HE)
60°C Nat Gas /60°C Propane/ 50°C Oil/60°C Heavy fuel oil (Melbury HE)
60°C Nat Gas /60°C Propane/ 50°C Oil/60°C Heavy fuel oil (Melbury HE)
60°C Nat Gas /60°C Propane/ 50°C Oil/60°C Heavy fuel oil (Melbury HE)
60°C Nat Gas /60°C Propane/ 50°C Oil/60°C Heavy fuel oil (Melbury HE)
- Fuel
Fuel
Units
MHE530
MHE580
MHE630
MHE700
MHE800
MHE895
MHE1150
MHE1300
MHE1650
MHE1900
MHE2500
MHE3000
MHE3800
MHE4500
MHE5400
MHE6300
MHE7400
MHE8600
MHE10000
Flow rate for natural gas - max (Nat gas)
nm3/h
61.5
66.5
72.6
79.9
92.1
101.8
131.3
149.7
191
218.8
286.9
347.3
418
494.6
591.4
689
808
936
1083
Fuel oil Flow - max (Oil)
kg/h
49.3
53.2
58.1
64
73.8
81.5
105.1
119.8
152.9
175.2
229.7
278.1
351.1
415.4
496.8
578.2
679.1
786.4
910.1
Flow rate for natural gas - min
nm3/h
10
12.9
12.9
18.1
18.1
27.4
33.5
33.5
38.5
47.8
75.9
74.9
92
121.2
153.8
165
202
243
303
Fuel oil Flow - min (Oil)
kg/h
18.8
24.2
24.2
31.6
31.6
43.9
51.7
51.7
60.4
75.2
108
113
143.9
178.6
223.6
260.2
305.6
369.6
455.1
Gas inlet pressure natural gas (G20)
mbar
Data on application
Data on application
Data on application
Data on application
Data on application
Data on application
Data on application
Data on application
Data on application
Data on application
Data on application
Data on application
varies by burner data on application
- Flue
Flue
Units
MHE530
MHE580
MHE630
MHE700
MHE800
MHE895
MHE1150
MHE1300
MHE1650
MHE1900
MHE2500
MHE3000
MHE3800
MHE4500
MHE5400
MHE6300
MHE7400
MHE8600
MHE10000
Flue gas volume at 20°C, 10% CO2, max EN303-3 (Nat gas)
kg/s
0.24
0.26
0.29
0.32
0.37
0.4
0.52
0.59
0.76
0.87
1.14
1.38
1.74
2.06
2.5
2.87
3.36
3.89
4.51
Flue gas volume at 20°C, 10% CO2, max EN303-4 (Oil)
kg/s
0.25
0.27
0.3
0.33
0.38
0.42
0.54
0.61
0.78
0.89
1.18
1.42
1.79
2.12
2.5
2.95
3.47
4.01
4.64
Flue gas volume at 20°C,10% CO2, min EN303-3 (Nat gas)
kg/s
0.04
0.05
0.05
0.08
0.08
0.11
0.14
0.14
0.16
0.2
0.32
0.31
0.38
0.5
0.6
0.69
0.84
1.01
1.26
Flue gas volume at 20°C,10% CO2, min EN303-4 (Oil)
kg/s
0.1
0.12
0.12
0.16
0.16
0.22
0.26
0.26
0.31
0.38
0.55
0.58
0.73
0.91
1.1
1.33
1.56
1.89
2.32
Flue gas temperature at 80/60°C - max (Nat gas)
°C
209
187
197
179
196
172
179
194
205
195
188
205
199
197
191
186
185
179
170
Flue gas temperature at 80/60°C - max (Oil)
°C
208
186
196
178
195
171
178
194
204
194
187
204
198
196
190
185
185
178
169
Flue gas temperature at 80/60°C - min (Nat gas)
°C
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
Flue gas temperature at 80/60°C - min (Oil)
°C
120
120
120
120
120
120
120
120
120
120
120
120
120
120
120
120
120
120
120
Exhaust gas losses at 80/60°C - max (Nat gas)
%
9.1
8
8.5
7.6
8.4
7.3
7.7
8.4
9
8.5
8.2
9
8.7
8.6
8.3
8.1
8
7.7
7.3
Exhaust gas losses at 80/60°C - max (Oil)
%
9
7.9
8.4
7.5
8.3
7.2
7.6
8.3
8.8
8.4
8
8.8
8.6
8.5
8.2
8
8
7.6
7.2
Standby loss @ 70°C
W
781
883
883
1021
1021
1178
1382
1382
1565
1742
2073
2330
2724
3413
3827
4511
5118
5582
6043
Combustion chamber resistance
mbar
5.97
4.22
5.06
5.03
6.74
5.33
6.41
8.39
9.67
9.43
10.35
9.5
11.01
10.18
10.91
12.46
14.4
16.03
17.48
- Connections
Connections
Units
MHE530
MHE580
MHE630
MHE700
MHE800
MHE895
MHE1150
MHE1300
MHE1650
MHE1900
MHE2500
MHE3000
MHE3800
MHE4500
MHE5400
MHE6300
MHE7400
MHE8600
MHE10000
Water flow connection
PN6
DN100
DN100
DN100
DN100
DN100
DN100
DN125
DN125
DN125
DN150
DN150
DN200
DN200
DN200
DN200
DN250
DN250
DN300
DN300
Water return connection
PN6
DN100
DN100
DN100
DN100
DN100
DN100
DN125
DN125
DN125
DN150
DN150
DN200
DN200
DN200
DN200
DN250
DN250
DN300
DN300
Gas inlet connection
Rc2"
Rc2"
Rc2"
Rc2"
Rc2"
Rc2"
Rc3"
Rc2"
Rc2"
Rc2 1/2"
Rc2 1/2"
Rc3"
Rc3"
Rc4"
Rc4"
Data on application
Data on application
Data on application
Data on application
Safety valve connection
PN16
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
DN80
DN80
DN100
DN100
DN100
DN125
DN125
Drain connection
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R2"
R2"
R2"
DN65
DN65
DN65
DN80
Flue diameter (O/D) - Nominal
mm
200
250
250
250
250
300
350
350
350
400
450
500
550
600
650
700
750
850
900
Flue hood drain connection
R3/4"
R3/4"
R3/4"
R3/4"
R3/4"
R3/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R1 1/4"
R2"
R2"
R2"
R2"
Electrical supply for boiler
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
230V 1Ph 50Hz
Electrical supply for burner
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
400V 3Ph 50Hz
Shipping weight (excluding burner) - Approx.
kg
1166
1523
1523
1854
1854
2020
2399
2399
2950
3404
4166
4761
7025
8425
10075
13545
16040
18620
21900
Hamworthy Range Guide 0708