ELCO Case Study Booklet Condensing Gas Boilers

International References for Commercial Heating Solutions 

GAS CONDENSING BOILERS 

1

LEADING THE WAY IN 

HEATING TECHNOLOGY 

OFFICES 

Globalworth Office Park New Build TRIGON® XXL RO 04 

The Bridge Office Park New Build TRIGON® XXL RO 06 

100 Bishopsgate New Build TRIGON® XXL UK 08 

10 Upper Bank Street Renovations TRIGON® XL UK 10 

OFFICES 

ELCO is an internationally renowned expert in heating technology, offering a wide 

range of premium systems and products suitable for a wealth of refurbishment and 

new building projects. 

ELCO is a subsidiary of Ariston Group and was founded in Switzerland in 1928. 

For decades, the company has been at the forefront of burner, condensing boiler, 

heat pump and solar technology, installing over 1.7 million heating systems 

throughout Europe. 

Sustainable energy solutions 

ELCO is committed to developing high quality heating products offering superb levels 

of efficiency, ultra-low energy consumption and minimal environmental impact. 

In addition to high performance, low emission condensing gas boilers, the company 

also manufactures a wide range of heat pumps that use the ambient air as a renewable 

energy source. Plus, these boiler and heat pump technologies can be used together 

to create hybrid systems for highly efficient heating, cooling and domestic hot water 

production. ELCO also produces a flexible range of combined heat and power units, 

ensuring there is a system available for any application. 

So, from single product replacements through to the most complex commercial projects, 

ELCO remains the heating manufacturer of choice for specifiers around the world. 

RESIDENTIAL 

Waterfront City Apartments New Build THISION® L PLUS HU 12 

Na Moskovskom Residential Complex New Build THISION® L PLUS RU 14 

Spółdzielnia Mieszkaniowa MF Buildings Renovations TRIGON® L PLUS PL 16 

Twekkelerveld Residential Care Centre Renovations TRIGON® XL NL 18 

Green Hill Residential Complex New Build TRIGON® XXL RU 20 

Mercato Residential Complex New Build TRIGON® XXL RU 22 

HOTELS / MALLS 

Elements Hotel & Spa New Build TRIGON® XL PL 24 

Platinum Mountain Hotel & Spa New Build TRIGON® XL PL 26 

Van der Valk Hotel New Build TRIGON® XL NL 28 

Villa Castagnola Hotel Renovations TRIGON® XL CH 30 

Mammut Shopping Centre Renovations TRIGON® XL HU 32 

Praxis Megastore Renovations TRIGON® L PLUS NL 34 

EDUCATION / SPORTS 

Vélodrome Stadium Renovations THISION® L EVO FR 36 

Ulster Museum Renovations TRIGON® XL UK 38 

Mediensis Technical College Renovations TRIGON® XL RO 40 

Annastift Living and Education Renovations TRIGON® XL DE 42 

Parkstad Limburg Stadium Renovations TRIGON® XXL NL 44 

RESIDENTIAL 



INDUSTRY 

Altex Logistic Centre New Build TRIGON® XXL RO 46 

INDUSTRY 

2 

3

TYPE: New Build | SECTOR: Offices 

Globalworth 

Office Park 

Bucharest, Romania 

OFFICES 

ELCO boilers enhance top Romanian 

business destination’s green credentials. 

Globalworth Campus is the largest office park in Romania, 

featuring three highly technical and environmentally friendly 

Class "A" office towers. It is establishing itself as a top 

business destination in Romania, one of Bucharest's largest 

conference centres and a dedicated commercial area. 

The challenge 

Globalworth Campus is the biggest Class “A” office complex 

in Romania and includes three A-class office buildings housing 

extensive office spaces, retail outlets and various other facilities 

spanning a rentable area of over 92,000m 2 . The park was built to offer 

a complete work experience. 

Comment 

By utilising the low water content technology in the ELCO boilers, 

the compact and lightweight units were able to meet the demanding 

requirements of this complex commercial installation. Also, the 

energy-saving performance of the solution implemented for the 

Globalworth Office Buildings Park provided customer satisfaction. 

This project will become a reference case for energy saving 

transformation in the office sector. 

Featured products: 

TRIGON® XXL SE 850 

TRIGON® XXL condensing boilers offer top 

performance and can reach outputs up to 

2 MW, thanks to a unique design. When 

mounted in cascade, the TRIGON® XXL 

boilers can reach a total output of 32 MW. 

High efficiency & low emissions 

Compact size and powerful output power 

Unique heat exchanger with HEX³ geometry 

for class leading NOx and CO emissions 

Robust stainless steel heat exchanger 

System schematic 

The plant scheme: 

3 x TRIGON® XXL SE 850 and 4 x R3605 

(installed in cascade) 

Top model with low emissions 

Designed for complex systems 

Optimised solutions for every project 

The ELCO solution 

Special design 

TRIGON® XXL offers an unmatched power and 

performance ratio, delivering outputs of up to 2 

MW, thanks to its unique design. 

Extremely low emissions 

By combining a unique heat exchanger geometry 

with a water-cooled cold flame burner, TRIGON® 

XXL offers a high performance class for low NOx 

and CO emissions. 

Modular construction 

ELCO's modular construction allows the TRIGON® 

XXL to be disassembled into its component parts, 

providing flexibility on site. 

Benefits 


70 

litre 

Low water 

content boiler 

23 

mg/kWh * 103% ** 

Extremely low 

NOx emissions 

(EN15502) 

Annual efficiency 

(NNG 40/30ºC) 

* (EN15502) 

** (In accordance with Equation 2 in the Non-Domestic Building Services 

Compliance Guide) 

INDUSTRY EDUCATION / SPORTS 


RESIDENTIAL 

4 

5


The Bridge 

Office Park 


OFFICES 

Office development gains sustainability 

boost thanks to ELCO boilers. 

The Bridge is an office development spanning 

aproximately 79,500m 2 , consisting of two buildings 

that were constructed in separate phases. The Bridge 

incorporates a number of sustainable design features, 

including a four-pipe fan coil HVAC system, which 

allowed the development to achieve LEED-CS 

Platinum certification. 

The challenge 

The project required six boilers fitted in cascade to provide a total 

output of 7,000kW. As the ELCO boilers each use a stainless steel 

heat exchanger, the equipment offers high levels of durability and 

reliability, perfect for such an intense commercial application. 

Comment 

ELCO Heating Solutions supported the project from beginning 

to end, from the initial system designs through to the delivery 

and commissioning of boilers, ensuring everything ran smoothly 

throughout. The TRIGON® XXL units installed at The Bridge Office 

Buildings are compatible with common building management 

system protocols - and use the ELCO Commercial Gateway for a 

seamless connection. 


TRIGON® XXL EVO 













2 x TRIGON® XXL EVO 1100, 2 x R3409 and 2 x R3403 





Benefits 

TRIGON® XXL EVO 1100 

117 

litre 

Low water 


22 

mg/kWh * 109% ** 

Extremely low 

NOx emissions 

(EN15502) 


(NNG 40/30ºC) 

* (EN15502) 






performance ratio, delivering outputs of up to 2 MW, 

thanks to its unique design. 


By combining a unique heat exchanger geometry with a 

water-cooled cold flame burner, TRIGON® XXL offers a 

high performance class for low NOx and CO emissions. 


ELCO's modular construction allows the TRIGON® XXL 

to be disassembled into its component parts, providing 

flexibility on site. 



RESIDENTIAL 

6 

7


100 Bishopsgate 

London, United Kingdom 

OFFICES 


Taking it to the roof: ELCO boilers 

installed in London’s newest landmark 

building. 

The City of London is the historic centre of the capital, as 

well as the international hub for financial services, including 

insurance, commodities trading and investment. On a prime 

corner of the ‘Square Mile’, a striking new 40-storey office 

tower has risen from 100 Bishopsgate and, at the heart of 

the 900,000 sqft building, lies six TRIGON® XXL EVO boilers 

from ELCO Heating Solutions. 

Background 

The owners of the tower, Brookfield Properties, targeted the highest 

standards of energy efficiency, productivity and comfort for its 

occupiers. As a result, environmentally conscious systems and 

materials have been included within the building’s design to maximise 

sustainability and reduce the carbon footprint over its lifetime. 

Central to these targets was employing a heating and hot water system 

that utilised the latest high efficiency technology and offered extremely 

low NOx emissions. These were key factors in the specification of 

ELCO’s TRIGON® XXL EVO boilers, which have gross efficiencies of up 

to 95.9% and ultra-low NOx emissions of just 20mg/kWh (Gross Calorific 

Value) – providing extremely cost-effective running costs. 

The six commercial boilers, which each have an output of 1.7 MW, are 

providing efficient heating and hot water to all 36 office floors and are 

housed on a purposely designed rooftop plantroom. The location also 

lent itself well to the boilers’ lightweight modular construction and low 

water content. 

The units were transported to the rooftop plant room using a crane. 

Once operational, their low water content kept the overall weight to a 

minimum, removing the need for any additional reinforcing of the floor. 















Heating Circuit 

Primary Flow 

(Pumps) 

6 x TRIGON® XXL EVO 1700 


Primary 

Returns 

1 x Ultramax R604 (as a summer operation boiler) 

6 No TRIGON ® XXL EVO 1700 Boilers 

TRIGON® XXL’s low NOx emissions are achieved by 

utilising a unique heat exchanger geometry and a 

water-cooled cold flame burner. This is combined with 

an optimised combustion system, plus a stainless steel 

heat exchanger, to provide a reliable and robust lifetime 

performance. 

Another major benefit of the TRIGON® XXL is its low water 

content design, which ensures it can respond rapidly to 

today’s complex heating systems, which often combine 

multiple heat sources. This design also means the boiler 

has a small footprint and lightweight construction, allowing 

it to be utilised in a wide range of commercial applications. 

The TRIGON® XXL is available in ‘ECO’ and ‘EVO’ variants, 

which combine to offer 19 different models. 

System 

Expansion 

Vessel 

Benefits 


166 

litre 

Low water 


PU 

22 

1 No Ultramax 

R604 Boiler 

MCWS 

mg/kWh * 109% ** 

Extremely low 


NOx emissions 

(NNG 40/30ºC) 

(EN15502) 

* (EN15502) 

** (In accordance with Equation 2 in the Non-Domestic Building Services Compliance Guide) 

SSV 



RESIDENTIAL 

8 

9


10 Upper Bank Street 

London, United Kingdom 

OFFICES 

Before 

After 

ELCO delivers premium upgrade to 

office refurb. 

As part of a major upgrade, ELCO Heating Solutions has 

supplied 15 TRIGON® XL 570kW boilers to 10 Upper Bank 

Street in Canary Wharf. The new compact and highly efficient 

gas condensing boilers have replaced 21 ageing units. 

The challenge 

Comprising 30 occupied floors, four basement floors, special function 

suites, as well as a gym, swimming pool and auditorium – all spanning 

over 1 million sq. ft. – 10 Upper Bank Street required a modern, reliable 

and high performance heating system to cope with the fluctuating 

demands of the building. 

Comment 

The refurbishment of the plant rooms was managed by the Projects 

Department of Engie. Commenting on the decision to choose ELCO 

boilers, Project Manager, Tim Mardell, said: “We looked at a few products 

and narrowed it down to three, but it soon became clear that ELCO’s units 

were the preferred option for a numbers of reasons. Firstly, their ability 

to be disassembled into component parts allowed easy access in the 

restricted plant rooms. Secondly, the boilers’ performance easily satisfied 

several green issues for the project and, finally, the overall customer care 

offered was excellent.” 

M&E consultants for the project were THD Consulting Engineers. Chris 

Glover, Director, said: “This was an ambitious project that required a 

carefully designed, high quality heating system. The ELCO boilers were 

chosen for a number of reasons, but one of the most important was 

their high levels of sustainability. I was really impressed with their overall 

performance, as well as the extremely low NOx levels on offer, so I will 

certainly be considering them for other projects.” 


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. 


for class leading NOx and 

CO emissions 

Extremely high efficiency 


Low water content boiler 

Compact dimensions 

Can be easily dismantled and reassembled 

onsite 


To fulfil the system requirements, ELCO’s floor standing units 

were installed over three floors; four boilers on the 31st level, 

and an additional 11 divided between the fifth and sixth. ELCO 

also ensured hassle free integration to the building management 

system, by utilising the ELCO Commercial Gateway to allow 

communication via BACnet protocol. 



6 x TRIGON® XL 570 (in 3 different plant rooms) 

Benefits 


Primary Pumps 

ELCO TRIGON® XL 570 

82 

litre 

Low water 


M 


Primary Return 

Low-velocity 

Mixing 

header 

29 

mg/kWh * 110.3% ** 

Extremely low 

NOx emissions 

(EN15502) 


(NNG 40/30ºC) 

6 No TRIGON® XL Boilers 

Schematic illustrates one plant room only. 

Two further floors comprised the entire 

refurbishment. 

“ 

PU 

SSV 

The entire installation process was 

straightforward, especially when it came to 

fitting the boilers in the required cascade 

arrangement within each plant room. The 

units are fantastic from an accessibility point 

of view, which will be particularly beneficial 

when it comes to annual servicing and 

maintenance. I was impressed with the 

smooth process of assembling them in situ 

and would highly recommend using them 

on future projects. 

” 

EV 

CWS 

Bob Masiero, Senior Projects Manager at HEVENTA Building 

Services Engineering (the M&E contractor for the project) 



RESIDENTIAL 

10 

* (EN15502) 

** (In accordance with Equation 2 in the Non-Domestic Building Services Compliance Guide) 

11

TYPE: New Build | SECTOR: Residential 

Waterfront City 

Apartments 

Budapest, Hungary 

OFFICES 

RESIDENTIAL 

Waterfront City's unique atmosphere 

combines the architectural values and 

atmosphere of the past with the most 

innovative solutions of today. 

The unique building of the former Óbuda Distillery and 

the old factory chimney have been given fresh features, 

highlighting their distinctive appearance. The former 

factory building has been renovated and converted into 

commercial, catering and office space. 


THISION® L PLUS 

THISION® L ECO 



The green-roofed residential buildings and the vast parkland 

area offer a welcoming and pleasant environment for residents, 

with an added emphasis on protecting the environment for future 

generations. 

The challenge 

The biggest challenge during the whole project was to install the 

most optimal boilers within the narrow dimensions of the plant 

rooms. As it was a large project, the problem arose that not enough 

space was provided for the boiler houses. A lot of space was taken up 

by parking and other rooms beneath the buildings. 

Comment 

Dominik Szenderák, project leader, said: "Based on my personal 

experience, I was fortunate to have had the opportunity to visit all 

the boiler houses, and it was a pleasure to see how much could 

be achieved within so little space. Talking to the contractors, I was 

pleased to hear that they were also impressed with how compact the 

appliances were and how this made the construction process much 

easier." 

12 

Designed to deliver. 

The THISION® L PLUS incorporates the latest 

high-performance technology and carefully 

engineered components to provide maximum 

efficiency for the lifetime of the boiler. This 

ensures the total cost of ownership is greatly 

reduced, offering an ecological solution for a 

range of commercial applications. 

Most powerful wall hung boiler 


Easy service 

Low noise level 

Integrated non-return valve 

Full external control 


Extensive cascade control options 

Highly efficient combustion 

The plant scheme 

3 x THISION® L ECO 120 

3 x THISION® L PLUS 140 


The buildings were equipped with the older 

THISION® L ECO and the newer version 

THISION® L PLUS. Their small enclosure 

dimensions also aided installation while 

saving space. 

Benefits 

THISION® L PLUS 140 

THISION® L ECO 120 

16.8 

litres 

For single 

boiler heat 

exchanger 

15 

litres 

For single 

boiler heat 

exchanger 

26 

mg/kWh 

NOx level 

(annual emission 

EN15502) 

36 

mg/kWh 

NOx level 


EN15502) 

110.7% 


(NNG 40/30ºC) 

111.9% 


(NNG 40/30ºC) 

13 


INDUSTRY


Na Moskovskom 

Residential Complex 

Tyumen, Russia 

OFFICES 

Russia 

RESIDENTIAL 

Powerful cascade installations of ELCO 

wall hung boilers. 

Na Moskovskom is a new residential complex that is 

currently under construction. The complex will consist of 10 

buildings which will be built in two stages. Rooftop boiler 

plant rooms will be used to supply the buildings with heat. 

The challenge 

When selecting boilers for use on the roof of residential buildings, it 

is important to consider their noise levels, weight and dimensions, 

as well as ease of maintenance and replacement. ELCO THISION® L 

PLUS wall hung boilers meet all these requirements. 

Comment 

For this project, we suggested a cascade installation of our 

THISION® L PLUS boilers. With this product, ELCO offers the most 

powerful wall hung boiler on the market, allowing less boilers to be 

used while providing the same levels of power compared to other 

manufacturers. As all maintenance is conducted from the front of 

the boilers, they do not require a lot of space. This, combined with 

small boiler dimensions, allows the THISION® L PLUS to be installed 

in the most compact boiler plant rooms. In addition, thanks to their 

fully insulated frames, these boilers produce very low levels of noise, 

so their operation will not disturb or interfere with the comfort of the 

occupants. 


THISION® L PLUS 

Designed to deliver. 

The THISION® L PLUS incorporates the latest 

high-performance technology and carefully 

engineered components to provide maximum 

efficiency for the lifetime of the boiler. This 

ensures the total cost of ownership is greatly 

reduced, offering an ecological solution for a 

range of commercial applications. 

Most powerful wall hung boiler 


Easy service 

Low noise level 

Integrated non-return valve 

Full external control 


Extensive cascade control options 

Highly efficient combustion 



Boiler room 1: 5 x THISION® L PLUS 200 

Boiler room 2: 8 x THISION® L PLUS 200 

Boilers have built-in pumps and 

non-return valves 

Low loss header used for primary/ 

secondary separation 

Benefits 


25.8 

litres 

For single 

boiler heat 

exchanger 


At the moment two boiler plant rooms are 

finished. In one boiler plant room there 

is a cascade of five THISION® L PLUS 200 

boilers installed in line and in the other 

there is a cascade of eight THISION® L PLUS 

200 boilers installed back to back. ELCO 

connection kits with headers and hydraulic 

separator were used for quick and easy 

installation. 

26.2 

mg/kWh 

NOx level 


EN15502) 

111.7% 


(NNG 40/30ºC) 



INDUSTRY 

14 

15

TYPE: Renovations | SECTOR: Residential 

Spółdzielnia Mieszkaniowa 

Multi-family buildings 

Świeradów-Zdrój, Poland 

RESIDENTIAL 

OFFICES 

Multi-family building powered by 

ELCO boilers. 

SM Grodzisk Wielkopolski is a housing cooperative dating 

back over 60 years. It is continually investing in its portfolio 

of properties, including upgrading the heating and hot 

water systems of its multi family buildings. 





The challenge 

When the Spółdzielnia Mieszkaniowa multi-residential property 

needed an upgrade for its ageing heating system, the THISION® 

L PLUS wall mounted boiler from ELCO was specified. The boilers 

needed to reduce running costs, as well as enhance long term 

reliability. Plus, with a restricted plant room, it was important to utilise 

units that delivered a high output in a small footprint, which is a key 

feature of the THISION® L PLUS units. 

Comment 

Following a period of failures from competitor products, which 

caused high repair costs, SM Grodzisk Wielkopolski decided to look 

for an alternative supplier of heating equipment. ELCO products 

were identified as an ideal solution, as they could provide the highest 

possible efficiencies and excellent levels of reliability. Furthermore, 

with ELCO boilers supplied extensive warranty periods, the boilers 

perfectly matched the requirements of the project. 

The investor puts very high demands on the installed devices, but 

also puts great emphasis on after-sales standards (maintenance 

service). Elco boilers fit perfectly into such high requirements as 

reliable devices with high efficiency and qualified service crew. 

16 

The THISION® L PLUS is the most powerful wall 

hung boiler on the market, capable of achieving 

outputs as high as 200kW (or an impressive 

1.6 MW when fitted in cascade). When fitted in 

cascade, models have a low installation height 

of just 1.7m, while they offer the smallest, most 

compact footprint (in terms of width). Up to 

eight boilers can be fitted in cascade, either inline 

or back to back. 

Built-in back-up thanks 

to a unique ‘dual heat 

exchanger’ design 

Modulation up to 10:1 

Extremely low NOx 

(

elco 

elco 

TYPE: Renovations | SECTOR: Residential 

Twekkelerveld Residential 

Care Centre 

Enschede, The Netherlands 

OFFICES 

RESIDENTIAL 


No concrete savings figures are available 

yet, but expectations are that the current 

installation is a lot more economical. 

Complete replacement of the heating 

system during the Christmas holiday 

season. 

The complex consists of 140 residential units and also has 

several facilities such as a Grand Café, supermarket and 

hair salon. 


TRIGON® XL 


PI 

PI 


The challenge 

Speed was the main priority, as the previous heating system had to 

be replaced quickly due to failure and repair proved impossible. It 

was vital to get a new system fitted to ensure residents did not go 

without heating and hot water. 

Comment 

As the old boilers failed during the coldest period of the year and 

the holidays were approaching, the care centre had to act quickly 

in sourcing and installing a replacement heating system. 

Thanks to ELCO, the new TRIGON® XL boilers were successfully 

installed in just two days. 

The TRIGON® XL incorporates the finest engineering and 

components to offer high quality levels of power and performance. 

It achieves low NOx emissions by utilising a premix burner system 

alongside a stainless steel heat exchanger. As a result, residents 

at the care centre now enjoy comfortable levels of heat as well as 

exceptional energy efficiency. 

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. 


for class leading NOx and 

CO emissions 





Can be easily dismantled and reassembled 

onsite 

TRIGON ® XL 


2 x TRIGON® XL 200 

A complete service 

Pomp 

Q1 

Future-proof. When choosing this installation, 

the replacement of the existing front burner 

was taken into account. 

Pomp 

Q1 

Benefits 

TRIGON ® XL 

TRIGON® XL 200 

31 

litres 

For single boiler 

heat exchanger 

28 

mg/kWh 

NOx level 


EN15502) 

110.4% 


(NNG 40/30ºC) 


INDUSTRY 

18 

19


Green Hill 


Yekaterinburg, Russia 

RESIDENTIAL 

OFFICES 

Boiler house 

Powerful ELCO boilers for new 

residential complex. 

Green Hill is a new residential complex with a total area of 

over 200,000m 2 . Residential complex that currently under 

construction will include 40 buildings. 


TRIGON® XXL SE 



The challenge 

Initially, traditional fire-tube boilers were considered for this project 

but after the construction company learned about the advantages 

of modern boilers, they decided to choose ELCO. Five TRIGON® 

XXL SE 1900 boilers with a total output of 9.2 MWt were installed in 

a standalone boiler plant room that will provide heating and DHW 

for the whole residential complex. This is the most powerful project 

ELCO has been involved with in Russia, as the company's boilers are 

used mostly for rooftop installations, as opposed to the standalone 

plant room in this application. 

Comment 

During construction of the complex, much attention was paid to 

environment legislation. ELCO boilers are fully compliant with this, 

as they meet the highest requirements regarding emission levels. 

At first, the boilers were working on LPG before they were then 

converted to natural gas without any additional accessories. ELCO 

TRIGON® XXL SE boilers have a 1:4 modulation ratio which will allow 

them to operate in optimal mode and maintain power according to 

actual heat load - even during the initial phase, when only a small 

number of houses have been built and occupied. 

TRIGON® XXL SE — Class-leading 

outputs with extremely low emissions. 

The TRIGON® XXL offers unrivalled power 

and performance, delivering outputs up to 

2 MW, thanks to a one-of-a-kind boiler design. 

High efficiency 

High modulation range 


Stainless steel HEX 


Up to 2 MW in a single unit 



5 x TRIGON® XXL SE 1900 


Plate heat exhcangers are used 

for primary/secondary separation 


Powerful boiler plant room with cascade of five 

TRIGON® XXL SE 1900 boilers. As the boilers will be 

part of a large system, it was decided to use plate 

heat exchangers to protect them. Thanks to the 

ELCO boilers' low emission levels, it was possible to 

use short flue chimneys. 

Benefits 



123 

litres 



23 

mg/kWh 

NOx level 


EN15502) 

103.3% 


(NNG 40/30ºC) 

INDUSTRY 

20 

21


Mercato 


Sochi, Russia 

OFFICES 

RESIDENTIAL 

ELCO boilers helped to solve flue pipes 

problem for modern residential complex. 

Mercato is a modern residential complex that consists of 

three 17-storey buildings with penthouses on top. From the 

windows of the apartments, there is a beautiful view of the 

sea and mountains. On the grounds of the complex there is 

a playground and sports ground, as well as a heated pool. 





The challenge 

The first concept for heat supply for this project was a standalone 

boiler plant room with traditional fire-tube boilers located about 

20m from the buildings. Due to the high emissions produced by 

this type of boiler, a high chimney was required. This would have 

needed a horizontal pipe to have been installed from the boiler 

house to one of the buildings, then a high chimney mounted 

on its facade. The total length of flue pipe would need to be 

approximately 80m. Obviously, such a chimney installation was quite 

costly - and, aside from that, it would also ruin the visual appeal of 

the complex, as the flue pipe would be installed close to playground 

and even block the view from one of the penthouses. 

Comment 

As a solution for this problem, we recommended installing ELCO 

TRIGON® XXL SE boilers. These boilers have very low emissions 

that fall below most strict limits. It was calculated that for ELCO 

boilers it would be enough to install pipework just 13m high in order 

to comply with emission requirements. Savings on the flue pipe 

covered the difference in cost between modern ELCO boilers and 

traditional fire-tube boilers. 
















Plate heat exchangers are used 

for primary/secondary separation 


For this project, we supplied three TRIGON® XXL 

SE 1000 boilers. Flue gases from three boilers are 

discharged into common pipe. Simple chimney 

mounted outside close to the boiler house. 

Benefits 


75 

litres 



23 

mg/kWh 

NOx level 


EN15502) 

103.3% 


(NNG 40/30ºC) 


INDUSTRY 

22 

23

TYPE: New Build | SECTOR: Hotels 

Elements 

Hotel & Spa 

Świeradów-Zdrój, Poland 

RESIDENTIAL 

OFFICES 


Three TRIGON® XL units from ELCO were 

installed in a cascade arrangement, delivering 

a combined output of 1.5 MW. 

Guests benefit from efficient heating 

and hot water at 5-star hotel resort. 

Located in the Jizera mountains, Poland, the Elements 

Hotel & Spa is a five star resort consisting of 291 rooms 

across three wings. It also features a wide range of facilities, 

including a heated leisure pool, hot tubs, spa rooms and 

dining facilities. 


TRIGON® XL 



The challenge 

In a luxurious hospitality and leisure environment, it is imperative to 

provide guests with the best experience possible. At Elements Hotel 

& Spa, there is an extremely high demand for heating and hot water 

throughout the day, with peak periods of demand in the morning. 

Consequently, the project required efficient boilers that could deliver 

high volumes of hot water alongside the highest efficiencies to keep 

running costs to a minimum. 

Comment 

Elements Hotel & Spa put a large emphasis on quality, from the 

design and construction of the property, through to the service and 

experience of its guests. Furthermore, the property owners valued 

the installation of heating products that were backed by a reliable 

service backup. 

The combination of these factors made ELCO and the TRIGON® XL 

units the perfect solution. Not only do the boilers provide reliability 

and high efficiencies, they are backed by a first-class service and 

maintenance packages, ensuring the Elements Hotel & Spa can 

continue to deliver a high-class experience for years to come. 

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 





Can be easily dismantled and 

reassembled onsite 



Benefits 


75 

litres 



29 

mg/kWh 

NOx level 


EN15502) 

110.4% 


(NNG 40/30ºC) 


INDUSTRY 

24 

25

system detekcji gazu 

LMS14 

LMS14 

AVS_1 

AVS_2 

AVS_3 

OZW 

LMS14 

AVS_1 

AVS_2 

AVS_3 

ZASILANIE GŁÓWNE 

Zapotrzebowanie na moc = 1440 kW 

3 

Strumień przepływu czynnika = 62 m/h 

Parametry czynnika Tz/Tp = 70°C/50°C 


Platinum Mountain 

Hotel & Spa 

Szklarska Poręba, Poland 

OFFICES 


RESIDENTIAL 

16 

7 

Multi-family building powered by 

ELCO boilers. 

The Platinum Mountain property is a 5-star resort complex 

comprising the main hotel and adjoining apartment 

buildings. The hotel building has 137 rooms 

for approximately 400 guests. 


TRIGON® XL 

DN200 

BUFOR GAZU 

11 

12 

DN65 

DN100 

1 

230-400 V 

16 A 

OCI345 

DN100 

230-400 V 

16 A 

3 3 

DN100 

8 

10 9 

8 

DN100 

11 

12 

DN65 

OCI345 

1 

DN100 

DN100 

8 

10 9 

8 

DN100 

11 

12 

DN65 

230-400 V 

16 A 

OCI345 

1 

DN150 

DN150 

3 

DN100 

8 

DN200 

DN150 

10 9 

8 

DN100 

DN50 

2 

NEUTRALIZATOR 

KONDENSATU 

2 

DN200 

Sprzęgło hydrauliczne Termen SP125/250, Q=29,2 m³/h 

13 14 14 

6 

15 

13 

OBIEG NR 1 

14 14 

4 5 

DN150 

DN150 

OZNACZENIA 

2 Naczynie wzbiorcze Reflex 1000N 

3 Zawór bezpieczeństwa 1 1/4 4 bar 

4 Sprzęgło hydrauliczne Aulin ASH 250/600 - króćce DN200 

5 

Filtr odmulnik Aulin FOM 150 

7 separator powietrza Flexvent MAX 3/4" 

8 Zawór klapowy DN100 

9 Zawór zwrotny międzykołnierzowy DN50 


11 Zawór kulowy DN50 - GAZ 

12 Filtr siatkowy DN50 - GAZ 



Oznaczenia 

instalacja C.O. - powrót 

instalacja C.O. - zasilanie 

1 Kocioł gazowy kondensacyjny firmy Elco, typ Trigon XL 500 

6 

Pompa obiegowa WILO IP-E 80/105-3/2 PN10 

15 Zawór zwrotny międzykołnierzowy DN150 

16 Zawór elektomagnetyczny systemu GAZEX DN125 

INSTALACJA POZA ZAKRESEM OPRACOWANIA 


The challenge 

Surrounding the hotel are independent apartment buildings with 333 

guest suites (each for a minimum of 4 people). There are 10 independent 

boiler rooms in the complex: The main room in the hotel building 

houses 3 x TRIGON® XL 570 boilers. The intermediate room provides 

heating and hot water for 3 apartment buildings using 2 x TRIGON® XL 

500 units, while there are another 8 cascade boiler rooms fitted with 

THISION® L ECO 70 boilers. 

The main building boasts extensive spa facilities and a swimming pool 

area with high energy demand in terms of both central heating and the 

large amounts of hot water required. 

Comment 

The building is constructed to a very high standard and has many high 

quality facilities for visitors and guests to use. 

There were very high specification requirements for the heating and 

hot water system, as well as a greater emphasis on after-sales service, 

maintenance and support. 

ELCO boilers fit in perfectly with these requirements, due to their high 

levels of reliability and energy efficiency, expertly supported by the 

company's qualified service staff. 









possible. 



CO emissions 








3 x TRIGON® XL 570 (installed in cascade) 

2 x TRIGON® XL 500 (installed in cascade) 

2 x THISION® L ECO 70 - 6 KPL (installed in cascade) 

3 x THISION® L ECO 70 (installed in cascade) 

2 x THISION® L ECO 100 (installed in cascade) 

Benefits 


82 

litres 



THISION® L ECO 

113.9% 


(NNG 40/30ºC) 

** Cascade of 2 boilers 

THISION® L ECO 100 

31 

mg/kWh 

NOx level 


EN15502) 

110.3% 


(NNG 40/30ºC) 


INDUSTRY 

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Van der Valk Hotel 

Venlo, The Netherlands 

OFFICES 


Thanks to the choice of a separate heating and 

domestic hot water setup, there is minimal downtime 

and higher efficiency. This is continuously analysed by 

the building management system. Van der Valk Hotels 

uses this type of system at a number of its venues. The 

results are expected to be similar for projects of the 

same size. 

RESIDENTIAL 

Van der Valk Hotel Venlo expands 

with 107 rooms. 

The newly built part of the hotel is heated by a bivalent heating 

solution, with a heat pump working together with powerful, 

energy efficient units from ELCO. The hot water is also 

produced by an ELCO system. 

The challenge 

The choice was made to design the installation to allow different heat 

solutions to work together: From natural gas to waste heat storage 

with heat pump technologies. The combination of existing and new 

technologies led to the decision to use separate products for heating 

and hot water. 

Comment 

The aim was to provide energy efficient heating without compromising 

on comfort, while expanding the heating system in the existing building. 

It was therefore decided to decouple heating and hot water. Here, the 

heat pump provides heating with the support of the ELCO boilers, which 

also guarantees plenty of hot water. This is indicative of the energyefficient 

and green approach being taken to ensure all Van der Valk 

hotels are more sustainable. 


THISION® L EVO DHW 

The THISION® L EVO DHW represents a 

significant step forward in heating technology. 

This DHW (Domestic Hot Water) version of 

the THISION® L EVO series is almost identical 

to that of the heating boiler, with the special 

feature that the components are made of 

316 stainless steel, allowing the DHW to flow 

directly into the boiler. 

High and sustainable performance 

Flexibility 

TRIGON® XL 

Energy efficiency and cost savings 


Let op! 

Het betreft hier een voorbeeld schema, 

hieraan kunnen geen rechten worden ontleend. 

Aansluiten en beveiligen volgens dewaterwerkbladen. 


Met het inregelventiel wordt de hoeveelheid ingeregeld, 

die deketel kan maken bij deopgegeven delta T 

TRIGON ® XL 

tapwaterketel 

TRIGON ® XL 

tapwaterketel 

BypassPomp Q1 

Systeem Pomp 

BypassPomp Q1 

Systeem Pomp 

Inregel ventiel 

Inregel ventiel 

Verdeler 

voeler 

Let op! 

De diameters van de gezamelijk leidingen tussen deketels en 

voorraadvat, dienen minimaal dezelfde afmetingen tekrijgen als de 

aansluitingen van het voorraadvat met een maximale lengte weerstand 

van 10mtr. Ketel aansluitingen dezelfde diameter als de ketel. 

HEATING: 3 x THISION® L EVO 100 

DHW: 2 x TRIGON® XL 200 


B10 

Hotel rooms have peak hot water demand. 

The system was required to meet this 

relatively short but high demand for hot 

water. 

QAZ 36 

DHW 

B3 

Tapwater- 

Voeler 

B31 

Tapwater- 

Voeler 

QAZ 36 

Koud water 

Aanvoer warmwater 

Circulatie 

Pomp 

WM 

Benefits 


THISION® L EVO 100 

THISION ® 

L EVO 

THISION ® 

L EVO 

31 

litres 



9 

litres 

Water volume 

THISION ® 

L EVO 

28 

mg/kWh 

NOx level 


EN15502) 

1:5 

Modulation 

(for single boiler) 

Naar verwarmingsgroepen 

Van verwarmingsgroepen 

110.4% 


(NNG 40/30ºC) 

109.4% 


(NNG 40/30ºC) 



INDUSTRY 

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29

TYPE: Renovations | SECTOR: Hotels 

Villa Castagnola Hotel 

Lugano, Switzerland 

RESIDENTIAL 

OFFICES 

The Villa Castagnola in Lugano is one 

of Switzerland’s most renowned fivestar 

hotels. 

Situated on the shore of Lago Maggiore, the venue boasts 

an impressive garden with subtropical plants and a 

charming structure When the hotel’s boiler room had to be 

revamped, two TRIGON® XL gas boilers made the cut. 

The challenge 

Being a historic hotel, the Villa Castagnola still uses a great many 

cast-iron radiators, which necessitates high flow temperatures. 

The old setup with four 250kW gas boilers had to be replaced 

as smoothly as possible to avoid any disturbance to the guests. 

Therefore, the project was executed in two consecutive years, each 

time replacing two old boilers with a new one. 

Comment 

Five-star hospitality demands reliability and quality, which ELCO 

can provide. 


TRIGON® XL 









possible. 




REMOCON NET 


In 2020, Villa Castagnola implemented an ambitious 

remodeling of its entire heating system to lower CO 2 

emissions and fossil fuel usage. Due to the cast-iron 

radiators, the hotel is still reliant on gas to provide 

heating. Using ELCO’s advanced, low-emission 

boilers, the CO 2 

footprint could be substantially 

lowered. 


The cascade with one TRIGON® XL 500 and one TRIGON® XL 

570 supplies heat for the entire hotel. The new boilers were 

connected to the existing setup in the boiler room. Enough 

heat can be generated even with just one boiler running. Hot 

water is generated using a separate heat pump. 

Benefits 


75 

litres 



29 

mg/kWh 

NOx level 


EN15502) 

110.4% 


(NNG 40/30ºC) 





CO emissions 









CO emissions 







INDUSTRY 

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31

TYPE: Renovations | SECTOR: Malls 

Mammut 

Shopping Centre 

Budapest, Hungary 

OFFICES 

Before 

After 


RESIDENTIAL 

The 105,000m 2 commercial shopping 

centre used two 1 MW traditional boilers 

to provide heating and hot water. 

Due to the high heating costs, the old boilers were 

replaced with four new ELCO TRIGON® XL condensing 

gas boilers in order to improve overall levels of energy 

efficiency. 

The challenge 

1. Removing the old boilers 

2. Accommodating the new boilers in a significantly reduced plant 

room 

3. Cost-effective installation of new boilers 

Comment 

Dominik Szenderák, project leader, said: "Walking around the 

renovated boiler room, I was suprised to see how much space 

they were able to save with four boilers compared to the previous 

two. It also shows how compact these high-performance boilers 

are. In particular, I would like to point out that customers were also 

completely satisfied with the consumption." 


TRIGON® XL 









possible. 



CO emissions 









Mounted plate heat exchanger 

Expansion tank 

Domestic hot water heat exchanger 

Buffer tank 

Benefits 


75 

litres 



29 

mg/kWh 

NOx level 


EN15502) 

110.4% 


(NNG 40/30ºC) 


The four new TRIGON® XL 500 boilers have 

enabled the entire shopping centre to reduce 

costs. They are properly stoned in a cascade 

system, which also helps to avoid unnecessary 

expenditure. The boilers were easily installed 

in an attic space, thanks to their modular 

construction, which also made the renovation 

more cost-effective. 



INDUSTRY 

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33

TYPE: Renovations | SECTOR: Malls 

Praxis Megastore 

Breda, The Netherlands 

RESIDENTIAL 

OFFICES 

Flagship DIY superstore fits new 

heating system for a sustainable future. 

Praxis Megastore Breda is one of the largest Praxis stores 

and has a retail floor area of 10,102m 2 . 

The challenge 

The existing boilers were obsolete and not did not match the vision 

of Praxis in terms of their sustainability. Making stores more energy 

efficient is an important part of the company's business operations, 

so the decision was taken to replace the heating system with a low 

emission alternative. 

Comment 

The Praxis organisation wants to make all its shops more sustainable 

and recently fitted all premises with LED lighting. Now the existing 

heating systems are gradually being replaced by more sustainable 

appliances. For the Praxis Megastore Breda, the decision was taken 

to upgrade to a high-capacity cascade installation, comprising four 

TRIGON® L PLUS boilers with a combined capacity of 700kW. 


TRIGON® L PLUS 

Flexible design, outstanding performance 

The TRIGON® L PLUS is a new approach 

to boiler design — one which creates the 

most flexible product on the market, while 

redefining commercial heating. 

Efficient heat transfer 


Low heat loss and noise emissions 

Easy handling 

Simple positioning 



TRIGON ® L 

PLUS 200 

4 x TRIGON® L PLUS 200 

TRIGON ® L 

PLUS 200 

TRIGON ® L 

PLUS 200 

PI PI PI PI 

Benefits 

TRIGON ® L 

PLUS 200 

TRIGON® L PLUS 200 

T10 

Verdeler 

Voeler 

T 




The choice of the system was mainly dictated by the 

stainless steel heat exchanger, where quality and 

consistently high efficiency are hallmarks. The back-up 

system — 2 heat exchangers in 1 unit — also ensures a 

reliable solution. 

25.8 

litres 



26.2 

mg/kWh 

NOx level 


EN15502) 

111.7% 


(NNG 40/30ºC) 

INDUSTRY 

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35

TYPE: Renovations | SECTOR: Sports 

Vélodrome Stadium 

Marseille, France 

RESIDENTIAL 

OFFICES 

ELCO ensures Vélodrome Stadium 

benefits from efficient hot water 

generation. 

As part of an extensive refurbishment, the Stade 

Vélodrome of Marseille, the emblematic stadium of 

the OM football club, needed to update its boiler plant 

to provide spectators, employees and athletes with 

highly efficient water generation. ELCO supplied two 

THISION® L EVO DHW boilers, designed to provide 

reliable hot water all year round. 

The challenge 

On the site of the legendary Velodrome stadium in Marseille, 

the challenge was to find a high-performance, energy efficient, 

system to meet domestic hot water needs. The ELCO solution with 

THISION® L EVO DHW systems was chosen by the installer Eiffage 

Energy and the contractor: Bouygues Energie. 

Comment 

Scham Baichoo, sales representative for the area, comments: "The 

particularity of the site is that the showers for the entire Olympique 

de Marseille team after their football matches, for approximately 

30 to 40 players, must be provided at a specific time. Bouygues 

Energie was also looking for a system that was very efficient in terms 

of energy consumption and with sustainable boilers. The ELCO 

solution was quickly adopted by the client, particularly because of 

the stainless steel in the THISION® EVO. In addition, the installation 

cost is lower due to the absence of a plate heat exchanger, which 

would have required more attention to detail during maintenance, 

whereas with the THISION® EVO the intervention is facilitated." 


THISION® L EVO DHW 

The THISION® L EVO DHW represents a 

significant step forward in heating technology. 

This DHW (Domestic Hot Water) version of 

the THISION® L EVO series is almost identical 

to that of the heating boiler. It features 

components made from grade 316 stainless 

steel, allowing the DHW to flow directly into 

the boiler. 

High and sustainable performance 

Flexibility 

Energy efficiency and cost savings 



2 x THISION® L EVO 140 DHW 

Benefits 

THISION® L EVO 140 

9 

litres 



30 

mg/kWh 

NOx level 


EN15502) 


After every football match, hot water is required 

for approximately 40 showers using 6 l/min 

(1.7m 3 /h). This demand is answered, thanks to 

2 x 140kW THISION® L EVO ECS boilers 

coupled with 2 x 2,000-litre storage tanks. 

This is the most efficient system known today 

and guarantees an unrivalled quality of service. 

The cascade arrangement of 2 THISION® L 

EVO DHW 140 ensures modulation whenever 

hot water is needed, whatever the situation. 

108.7% 


(NNG 40/30ºC) 



INDUSTRY 

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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. 

38 


TRIGON® XL 









possible. 



CO emissions 








Gas 


4 x TRIGON XL® 570 

1 x Low Loss Header 

Benefits 


82 

litres 



LLH 

31 

mg/kWh 

NOx level 


EN15502) 

Pump 1 Pump 2 Pump 3 Pump 4 

110.3% 


(NNG 40/30ºC) 

Return Header 

Expansion 

Vessel 

Pressurisation 

Unit 

Cold Water 

Supply 


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.” 

39 



INDUSTRY


Mediensis 

Technical College 

Medias, Romania 

RESIDENTIAL 

OFFICES 

Technical college upgrades to ELCO’s 

advanced boiler technology. 

ELCO Heating Solutions has supplied two TRIGON® XL 

250 gas condensing boilers to Mediensis Technical College, 

Medias. The new boilers are providing highly efficient 

heating and hot water to the entire property. 

The challenge 

The HVAC system at Mediensis Technical College was upgraded 

with the latest floor standing boiler technology from ELCO Heating 

Solutions. The TRIGON® XL 250 represents a major upgrade, with the 

new boilers offering a range of technical firsts. 

Comment 

The access to the plant room within the Mediansis Technical College 

was limited, which created a challenge when replacing the boilers. 

As a result, it was imperative to specify a compact unit that would be 

easy to manouevre on site. Measuring only 468cm wide and supplied 

with castor wheels, ensured the TRIGON® XL 250 could be taken 

through narrow doors and corridors for a hassle free installation. 


TRIGON® XL 









possible. 



The installation of the two ELCO units was part of 

the complete refurbishment of the heating and hot 

water system at Mediensis Technical College. 

“ 

The final result is outstanding! 

The new boilers have made a 

tremendous impact, helping 

to significantly reduce 

operating costs and greatly 

improve all-round reliability. 

Florin Medeșan, Unigroup owner (installing company) 

” 





CO emissions 









(installed in cascade with equalisation 

cylinder and four heating circuits) 

System capability 

Intelligent control 

Compact design with small footprint 

Benefits 


35 

litres 



27 

mg/kWh 

NOx level 


EN15502) 

110.4% 


(NNG 40/30ºC) 

INDUSTRY 

40 

41

I 


Annastift 

Living and Education 

Hanover, Germany 


The heating system requires a delta T of 

30K and at the same time a high systemside 

water pressure of 6 bar due to the 

building's height. Furthermore, only two 

chimney flues with a height of 42m were 

available. Here, the TRIGON® XL was able 

to demonstrate its full performance and 

robustness. Coupled with ELCO's HEX³ 

stainless steel heat exchanger and the 

low flue gas emissions, a long-lasting and 

efficient system was created. 

OFFICES 


RESIDENTIAL 

Achtung ! 

Es handelt sich nur um eine Prinzipskizze. Sicherheitstechnische Einrichtungen wie 

Armaturen etc. sind zu erganzen. 

Innovative new central heating system 

powered by ELCO boilers. 

Annastift Living and Education ensures comprehensive 

educational, vocational and social rehabilitation for 

people with disabilities in Hanover, especially those 

with physical disabilities. 

From the heating centre in the basement of the 

16-storey building, the surrounding properties are 

supplied with heat. 

The challenge 

The existing boiler was defective and leaking. Therefore, the 

defective 2,300kW boiler had to be replaced at short notice, while 

the remaining 2,300kW boiler also had to be renewed. A CHP 

(combined heat and power) with an electrical output of 300kW 

remains installed in the central heating system, which should be 

hydraulically integrated into the new set-up and optimise running 

time. A combination of cramped conditions in the central heating 

system, the building's height of over 42m and the integration into 

the BMS (GLT) were all issues that had to be overcome. 

Comment 

The aim was to increase the efficiency of the boiler system in 

combination with the CHP unit and ensure reliability. For this 

purpose, we focused on a low starting output of the boilers when 

selecting the products and put together a cascade comprising 

several units. We then compared the TRIGON® XXL and TRIGON® 

XL and, together with the heating engineer and the customer, we 

decided on a cascade of 8x TRIGON® XL 570 instead of 4x TRIGON® 

XXL 1200. 


TRIGON® XL 









possible. 



CO emissions 









COM - Gateway for connecting the boilers to the building 

management system via the BAC-Net bus system 

Benefits 


Ventil 

01 

Pumpe I---, 

01 A I 

W I 

elco 

 

LPBr-- 

---Bus- -- 

TRIGON ® XL 

I 

I--- 7 

Pumpe A I 

01 M 

elco 

 

LPB 

Bus 

LPB- ---Bus -- 

Nur zur Illustration, keine Planungsgrundlage! 

Customized Solution 

Hohenzollernstr. 31 

D-72379 Hechingen 

82 

litres 



Gezeichnet: 

Gepruft: 

R.S. 

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Pumpe 

01 A I 

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Datum: 16.08.2023 

Anderungsdatum: 

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TRIGON ® XL TRIGON ® XL TRIGON ® XL 

LPB- 

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TRIGON ® XL TRIGON ® XL TRIGON ® XL TRIGON ® XL 

31 

mg/kWh 

NOx level 


EN15502) 

110.3% 


(NNG 40/30ºC) 

Bezeichnung: 

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zur bauseitigen 

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COM 

GATEWAY 

___ Jiil 

 

---------------------------r- 

___________________________ 1 

Ausarbeitung Seite: 2 van: 26 elco 



INDUSTRY 

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TYPE: Renovations | SECTOR: Sports 

Parkstad 

Limburg Stadium 

Kerkrade, The Netherlands 

RESIDENTIAL 

OFFICES 

Parkstad Limburg stadium in Kerkrade. 

The Parkstad Limburg stadium in Kerkrade is Dutch 

football club Roda JC's home stadium and has 19,979 

seats, 2,500 business seats and 24 skyboxes. 

The challenge 

For this project the big challenge was placing the boiler in the 

stadium. Because the ELCO TRIGON® XXL is easily dismantled into 

smaller components, transporting and installing it in the boiler room 

was possible. The integral cargo wheels made manoeuvring and 

positioning the boilers on site easier. 




Pomp 

Q1 

Naar diverse 

afnemers 

Van diverse 

afnemers 


The system has now been running as 

expected for some time: Fault-free 

and significantly reducing natural gas 

consumption. 

Thanks to the low-water combustion 

technology, in which the heat exchanger 

operates with a minimum amount of 

water, the warm-up time is fast. In fact, the 

TRIGON® XXL EVO needs only 30 seconds 

to reach room temperature. 


Comment 

During the construction of the stadium, the boilers were lifted inside. 

This was only made possible due to the boiler's ability to be 

dismantled and then reassembled once on site. The end result 

was a high quality, energy efficient heating system in a cascade 

arrangement. The new boilers are responsible for powering the 

stadium's pitch heating system, the hot water for the showers and 

swimming pool, plus heating for the offices and public lounges. 






Pomp 

Q1 

Pomp 

Q1 








3 x TRIGON® XXL EVO 1100 

Benefits 


117 

litre 

Low water 


22 

mg/kWh * 109% ** 

Extremely low 

NOx emissions 

(EN15502) 


(NNG 40/30ºC) 

INDUSTRY 

44 

* (EN15502) 



45

TYPE: New Build | SECTOR: Industry 

Altex Logistic Centre 


OFFICES 

RESIDENTIAL 

ELCO meets logistics centre’s heating 

demands quickly and efficiently. 

Altex Romania, one of the largest companies in the Romanian 

retail market, has invested 37 million Euros in developing a 

new logistics centre near Bucharest. Located on a plot of land 

measuring 15.2 ha, it comprises two main storage buildings 

measuring 90,000m 2 , alongside 46,000m 2 of external 

logistics platforms. The new logistics centre accommodates a 

wide range of products, from large household appliances to 

IT components and accessories. 

The challenge 

To deliver the high heating outputs across such a large site required 

the specification of powerful boilers. They also needed to deliver 

the highest levels of efficiency to reflect the new state-of-the-art 

logistics centre. As a result, the four floor standing units from ELCO's 

commercial range were installed in cascade, delivering a combined 

output of 5,500kW across the two logistics halls. 

Comment 

Altex Logistic Park needed a carefully designed, high quality heating 

system. ELCO's solution was developed to developed to meet the 

highest demands, while offering the greatest possible economy, 

maximum flexibility and reduced emissions. 



















2 x R3409 





Low water technology 

TRIGON® XXL boilers are fast and respond quickly - even 

in complex installations when combined with other heat 

sources. 



performance ratio, delivering outputs of up to 2 MW, 

thanks to its unique design. 


By combining a unique heat exchanger geometry 

with a water-cooled cold flame burner, TRIGON® XXL 

offers a high performance class for low NOx and CO 

emissions. 


ELCO's modular construction allows the TRIGON® 

XXL to be disassembled into its component parts, 

providing flexibility on site. 

Benefits 


97 

litre 

Low water 


23 

mg/kWh * 103.3% ** 

Extremely low 

NOx emissions 

(EN15502) 


(NNG 40/30ºC) 



INDUSTRY 

* (EN15502) 



46 

47

More 

information: 

www.elco.net 

48

ELCO Case Study Booklet Condensing Gas Boilers

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