1. business and industrial
2. energy
3. oil

Metropolitan
Steam Boiler
Suitable for Pressure Jet
or Rotary Cup burners
Oil, gas or dual fuel firing
Outputs 1845 - 21 700 kg/h
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Metropolitan - Steam Boiler
The Metropolitan is a range of high pressure conventional
three pass wet back steel horizontal shell and tube steam
boilers, utilising a combustion chamber and two passes of
tubes. The boiler is available in sizes ranging from 1845 21 700 kg/h (from and at 100ºC feed water temperature)
and is suitable for firing on natural gas, LPG and oil with a
choice of burner manufacturers. The boilers are supplied fully
packaged for ease of installation and only require connection to
electricity, water, steam and blow down lines.
General
Description
The Metropolitan range of
steam boilers is available in
outputs up to 21 700 kg/h.
The boiler has a high water
volume and large steam space,
which allows it to satisfy high
steam demands for short
periods and minimizes the
formation of water droplets.
The boiler has a low heat
release rate, due to the large
heating surface, which helps to
reduce emissions and improve
the efficiency.
Metropolitan steam boilers
have a standard working
pressure of up to 10 bar, but
higher pressures are available
on request.
The boilers have a typical
efficiency of up to 90% across
the range, based on a net
calorific value of the fuel.
Metropolitan steam boiler
Performance Features
•O
utputs up to 21 700 kg/h
• L arge steam space
•H
igh water volume
•H
igh quality saturated steam
• Up to 10 bar working pressure (higher
pressures available on request)
•u
p to 90% net efficiency
•C
omposite waste heat design option
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The boilers are fully packaged
and are supplied with burner,
control panel, twin feed water
pumps and ancillary mountings,
which are pre-wired and fitted
to the boiler. In some cases
these items are supplied loose
for site installation.
The internal parts of the boiler
are easily accessible for cleaning
and inspection, by opening
the two front hinged access
doors. This gives good access
to the front tube plate and the
second and third pass boiler
tubes. The boiler is supplied
with a set of cleaning tools.
Metropolitan boilers should be
installed in accordance with
relevant standards, codes of
practice and current building
regulations. Water treatment
is recommended for all steel
shell and tube boilers and
a water treatment specialist
should be consulted for advice
on this matter.
Design & Construction
The Metropolitan is a range of
three pass wet back horizontal
shell and tube steam boilers.
The boiler design incorporates
a corrugated combustion
chamber, which helps to
reduce thermal stresses during
expansion and improve overall
efficiency. The boilers are
manufactured using flanged
tube plates, which also reduces
thermal stresses during the
combustion process,
The boilers have a large
surface of evaporation and
a large steam space which
provides high quality steam.
They also have a generous
shell and furnace size, to
ensure boiler outputs are
easily achieved.
The boilers are insulated with
a high density mineral wool
blanket, enclosed in a sheet
steel casing.
All Metropolitan steam
boilers are designed and
manufactured, inspected
and tested as required by
the relevant provisions of
the Pressure Equipment
Directive 97/23/ EC and also
in accordance with the EC
type - examination certificate
(module B). The boilers are CE
certified. Boilers manufactured
and constructed to EN 12953
are available on request.
Metropolitan steam boilers
are subject to X-ray and
ultrasonic testing and they are
hydraulically pressure tested
in the factory.
Metropolitan steam boiler showing
internal arrangement
Design Features
• Corrugated Combustion Chamber
• Flanged tube plates
• Generously sized shell and furnace
• Insulated steel casing
• Manufacture to EN12953 on request
• Hydraulic factory pressure test
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Combustion & Controls
Metropolitan steam boilers
are suitable for firing on either
gas, oil or dual fuel. A burner is
normally supplied and matched
to the boiler to give either
high/low or fully modulating
operation, which ensures
optimum operating efficiency
to suit specific requirements.
The burner is bolted to the
boiler front plate and pre-wired
to the control panel.
The boiler control panel
supplied satisfies all mandatory
requirements and is generally
located on the side of the
boiler, but in some cases
depending upon the burner
specification and size, it may be
floor mounted adjacent to the
boiler. Boiler control panels can
be supplied to meet customer
requirements and generally
include, alarms, relays, switches
and feed pump motor starters.
The panel is pre-wired and
connected to level controls,
pressure switches, feed water
pumps and other ancillary
items located on the boiler.
Volt free kits can also be
supplied, details available
on request.
The control panel requires a
400v 3 phase electricity supply
and is supplied with a suitable
fused isolator.
Ancillary Mountings
The Metropolitan steam boiler
comes fully packaged and is
supplied with the following
standard fittings:
•C
ast Steel Crown valve
•B
low down valve with key
• t wo high lift safety valves
• t wo reflex type water level
gauges, complete with blow
down cocks
•P
ressure switches for control
of high/low and modulating
burners
•S
afety pressure switch
•T
wo low level safety probes
•T
win feed water pumps (on
/off control), strainer, feed
check and non return valve
•P
ressure gauge
•P
robe type on/off water level
controls
•B
oiler control panel
•T
op inspection opening &
hand hole inspection covers
•L
adder and Gantry
The fittings are all mounted
on the boiler and are pre-wired
and piped accordingly in the
factory. The water feed pumps
are fitted to the boiler support
brackets and can be located
on either the left or right side
of the boiler. However this
needs to be specified at the
time of order.
An additional range of boiler
mounted accessories are available,
including:
•T
imed bottom blow down valve
•S
elf monitoring water level
controls
•A
uto TDS system
•S
ample cooler
•M
odulating feed water control
• Invertor driven pumps and/or
burners
•F
lue gas economiser
•B
urner acoustic shrouds
•P
M5 panels (Supplied loose for
remote mounting)
Composite Waste Heat Boilers
Metropolitan steam boilers
can also be manufactured to
a composite design, utilising
waste heat from another heat
source such as a Combined
Heating and Power plant or an
industrial process. This type of
steam boiler is normally fired
on gas or oil using a burner
as the primary heat source,
but it has an additional pass
through which waste heat
gases flow. The waste gas
gives up its useful heat to the
boiler when available and it is
then discharged into the flue.
In some cases the waste heat
gas may be the primary heat
source, with oil or gas burners
used to top the system up
when required.
Boilers of this type are
designed specifically to suit site
and system requirements and
are available on request.
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Technical Data & Dimensions
Metropolitan steam boiler
Metropolitan Model
Boiler Output (kg/h) *
Boiler Output ( kW)
Dimensions, weight & capacity
A
B
C
D
E (straight valve)
E (angle valve)
F
G
H
J
K
Approx. dry weight (kg) Flooded water capacity (l)
Efficiency based on net CV
Efficiency (%) @100% load
Connections
Steam outlet (mm)
Blow down (mm)
Feed water inlet (mm)
Safety Valve (mm)
Safety Valve outlet (mm)
Combustion & Flue Data
Flue diameter flanged (mm)
Gas flow rate G20 (m³/h)
Oil flow rate (35 secs) (l/h)
Oil flow rate (Heavy) (l/h)
Flue gas volume (m³/min)
Comb. chamber resistance (mbar)
1000
1200
1500
1750
2000
2500
3000
3500
4000
5000
6000
1845
1163
2225
1395
2780
1744
3255
2035
3690
2326
4620
2907
5535
3488
6510
4070
7380
4651
9225
5814
11110 13020 14755 16600 18445 21700
6977 8140 9302 10465 11628 13953
2400
1200
2280
4100
2560
2700
2450
1500
865
750
2000
6500
5940
2400
1200
2280
4100
2560
2700
2450
1500
865
750
2000
7100
5805
2500
1400
2460
4100
2765
2900
2550
1620
915
750
2180
8550
6960
2500
1400
2460
4100
2765
2900
2650
1620
915
750
2180
9620
6890
3000 3200 3200 3500 3500 3500 4000 4500 5000 5100 5500 6000
1400 1500 1500 1500 1600 1600 1700 1800 1800 2000 1900 2300
2460 2620 2760 2720 2920 3000 3200 3350 3500 3600 3685 3950
4600 4900 5100 5600 5700 5700 6300 6750 7250 7650 8050 8600
2765 2980 3120 3130 3330 3410 3660 3810 3960 4135 4220 4300
2900 3135 3275 3345 3545 3625 3925 4075 4225 4500 4585 4650
2650 2760 2900 2900 3000 3200 3300 3460 3620 3750 3750 4000
1620 1745 1750 1750 1950 2000 2000 2070 2150 2200 2350 2240
915
990
1020 1020 1115 1150 1250 1300 1310 1320 1400 1470
750
800
880
1000 1070 1070 1100 1100 1100 1200 1200 1150
2180 2300 2340 2400 2500 2640 2740 2880 3040 3200 3280 3500
10550 11550 13100 14050 15080 17500 21100 23050 26550 31100 33150 38000
8435 9610 9865 11940 12630 14120 16530 20030 25700 28140 31120 37500
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
65
40
32
25
40
65
40
32
25
40
80
40
32
32
50
80
40
32
32
50
80
40
32
32
50
100
40
32
32
50
100
40
32
32
50
125
40
32
32
50
125
40
40
40
65
125
40
40
40
65
150
40
50
50
80
150
40
50
50
80
150
40
50
65
100
200
40
50
65
100
200
40
50
65
100
200
40
65
65
100
400
132
109
115
50
5.5
400
158
131
137
60
7.0
450
198
163
172
76
7.0
450
232
191
201
89
7.0
500
265
218
229
101
8.5
550
331
272
286
127
8.0
600
397
327
344
152
9.0
600
463
381
401
178
10.5
650
529
436
458
203
10.0
650
661
545
573
253
10.5
700
794
654
687
298
12.0
700
926
763
802
357
12.0
800
1058
872
916
405
14.0
900
1191
980
1031
456
14.0
900
1323
1089
1146
506
15.0
1100
1587
1307
1374
607
19.0
* Duty in kg/h f & a 100ºC at atmospheric pressure.
All dimensions in (mm) unless stated otherwise
5
7000
8000
9000 10000 12000
Installation
Clearances
All Metropolitan boilers should
be installed and positioned so
that there is adequate access
to the flue and pipework
connections by the installer.
Consideration should also
be given to the position and
projection of the burner at the
front of the boiler for cleaning
and maintenance purposes.
The boiler should also be
installed so that there is at
least the length of the boiler in
front of the door
for cleaning purposes.
smooth, level and constructed
from a non flammable material.
Boiler base
Commissioning
Metropolitan boilers should
be located on a surface capable
of supporting the fully
flooded weight of the boiler
and burner and it should be
Commissioning of the boiler/
burner can be arranged.
Delivery
Delivery to site can be arranged.
Applications
The Metropolitan steam boiler
range is suitable for a wide
variety of applications including:
• Hospital and Healthcare
projects
• Laundry and industrial cleaning
• Food Manufacture/Processing
• Pharmaceutical Manufacture/
Processing
• Other Specialist Processing
applications
• Horticulture
Ormandy Group Associated Steam Products
All Ormandy products can
be skid mounted to specific
requirements. Detailed
information on all Ormandy
products is available on request.
Additional steam products include:
•S
tainless steel Hotwell Tanks
up to 30 000 litres
•B
lowdown Vessels designed
and manufactured in
accordance with PD5500
•S
team to Water Non
Storage Calorifiers
•S
team pressure reducing
stations
•F
lash vessels designed and
manufactured in accordance
with PD5500
•S
team Accumulators
•P
late heat exchangers
•C
ondensate pumps
(powered by electricity or
steam/air)
•S
team to water Packaged
Condensate heat recovery
units
•C
lean steam generators to
produce steam that meets
the criteria of HTM 2031
•P
ackage plant rooms
which can be designed to
incorporate any of the
above equipment
Issue 1 April 2011
The Ormandy group has
an extensive range of steam
boilerhouse products,
which compliment the
Ormandy Hartley & Sugden
Steam boiler range.
Please visit www.ormandyltd.com
to access comprehensive information on
Ormandy Hartley & Sugden products and services.
The Ormandy Group: Ormandy Offsite / Ormandy Rycroft / Ormandy Electric
Ormandy Hartley & Sugden / Ormandy Newade / Ormandy Dreh / Ormandy Aquatherm
For full information on the Ormandy Group and all its products and services,
please visit www.ormandyltd.com Tel +44 (0)1422 350111
Ormandy Hartley & Sugden, Atlas Works,
Gibbet Street, Halifax, HX1 4DB England
Tel +44 (0)1422 355651 Email [email protected]
Ormandy Group follows a policy of continuous improvement in the design and performance of its products. Therefore we reserve the right to make changes and improvements to our
products without notice which may affect the accuracy of the descriptions and illustrations contained in this brochure.
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