ELCO Case Study Booklet Condensing Gas Boilers

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TYPE: Renovations | SECTOR: Education
Ulster Museum
Belfast, Northern Ireland
OFFICES
RESIDENTIAL
Before
After
ELCO Heating Solutions brings modern
heating to Ulster Museum.
ELCO Heating Solutions (ELCO) has supplied four 200kW
TRIGON® XL gas condensing boilers to Ulster Museum,
Belfast. The new boilers, which replaced four ageing cast
iron units, are providing highly efficient heating and hot
water to the entire property.
Background
ELCO’s agent for Northern Ireland, Sermet (NI) Ltd, completed the boiler
replacement and commissioning over two phases to maintain heating and
hot water services throughout the project, while reducing disruption for
staff and visitors.
One of the major challenges involved access to the basement plant room,
which could only be entered via a ladder staircase or a small service lift
measuring less than one square metre. This restriction made the TRIGON®
XL the perfect boiler for the project, thanks to its ingenious modular build.
This design feature allowed Sermet’s installation team to disassemble
the boilers into their component parts at ground level and subsequently
transport them to the basement in the small service lift. Completing the
whole process took less than half a day for each boiler.
The new boilers have been connected to the existing system, with the
addition of a low loss header to provide hydraulic separation of the
primary and secondary circuit. This approach is helping to regulate the
heating system’s flow rates and pressures, which will ultimately maintain
the boilers’ high efficiencies and performance levels over their lifetime.
Furthermore, each TRIGON® XL unit has been connected to the Building
Management System (BMS), which utilises the boilers’ built-in cascade
controls, ensuring they operate at the required set point and modulate
accordingly.
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Featured products:
TRIGON® XL
The TRIGON® XL represents a significant
step forward in heating technology.
With extremely flexible configurations,
clever design and a range of models
available, the boiler is perfect for a variety
of commercial applications. Plus, extensive
cascade arrangements of up to 8 boilers
with a combined output of 4,560kW are
possible.
Unique heat exchanger with HEX³
geometry for class leading NOx and
CO emissions
Extremely high efficiency
Robust stainless steel heat exchanger
Low water content boiler
Compact dimensions
Can be easily dismantled and
reassembled onsite
System schematic
Gas
The plant scheme
4 x TRIGON XL® 570
1 x Low Loss Header
Benefits
TRIGON® XL 570
82
litres
For single boiler
heat exchanger
LLH
31
mg/kWh
NOx level
(annual emission
EN15502)
Pump 1 Pump 2 Pump 3 Pump 4
110.3%
Annual efficiency
(NNG 40/30ºC)
Return Header
Expansion
Vessel
Pressurisation
Unit
Cold Water
Supply
The ELCO solution
The specification was created by the Construction and
Procurement Delivery (CPD) department for NI, which
has a remit to help clients across NI deliver successful
projects. Commenting on the specification, lead engineer,
Bernadette Cassidy, said: “Once the old boilers started to
cause issues, such as minor leaks and not starting on cold
winter mornings, we soon agreed they had reached the
end of their life cycle and needed replacing. We identified
specific design requirements for the replacement units,
including ultra-low NOx emissions, seasonal efficiencies
greater than 97%, a flexible boiler design and a heat
exchanger constructed entirely from stainless steel.
Essentially, we needed a reliable, new heating system to
maintain the required conditions in the museum throughout
the year and protect the artefacts.”
Other aspects identified within the new specification
included the upgrade of the circulating pumps for adaptive
flow rates, extra insulation to all pipework to reduce heat
loss and new controls that could be monitored remotely by
the local premises team.
Discussing the ELCO TRIGON® XL boilers, Bernadette
added: “The new boilers have a small footprint and are
easy to move into position, which is highly beneficial in tight
spaces such as the museum’s basement plant room. They
are also quiet and have been working well, so the client
is really happy with the installation and upgrade of the
equipment.”
Comment
Andrew Boyd, General Manager at Sermet (NI) Ltd,
said: “As soon as we saw the specification for this project,
we knew our tender would include the floor-standing
TRIGON® XL boilers, given their superb efficiencies and
unique modular design. There are very few boilers that can
deliver the same combination of performance
and efficiencies, alongside the high levels of flexibility
on site.”
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