For lasting comfort in every one of your customer's homes - Comfort for your home
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Heating Hot water Renewables
For lasting comfort
in every one of your
customer‘s homes
Comfort for your home
About Vaillant.....................................................................................................................................................3
Setting the standards since 1874............................................................................................4
Why choose a Vaillant product?...............................................................................................5
Introducing Green iQ......................................................................................................................6
ecoTEC & ecoFIT combi boilers................................................................................................. 7
ecoTEC & ecoFIT system boilers............................................................................................... 17
ecoTEC & ecoFIT open vent boilers........................................................................................ 25
Technical data................................................................................................................................... 29
Flue lengths....................................................................................................................................... 40
Terminal clearances....................................................................................................................... 41
Flue solutions.................................................................................................................................... 42
1
Controls............................................................................................................................................... 45
MyVAILLANT Pro.............................................................................................................................. 54
Water filters....................................................................................................................................... 56
Domestic hot water cylinders................................................................................................... 59
Training ............................................................................................................................................... 63
Service and spares support....................................................................................................... 64
Guarantees......................................................................................................................................... 65
Order numbers................................................................................................................................. 66
Please note the information contained in this guide is for the use of competent and qualified heating engineers in the UK. We always recommend attending a training course
provided by Vaillant to ensure complete knowledge of the appliance and/or accessories you are installing. The Vaillant Group does not warrant the accuracy or completeness
of any of the information provided in this brochure. Should you require any clarification or further information, please speak with your ASM or call our technical helpline. The
Vaillant Group does not accept liability or responsibility resulting from the installer’s failure to comply with the guides or otherwise. For more detailed information, please
refer to the installation manual for each product you are using.
2
About Vaillant
The Vaillant Group
Vaillant is a brand within the Vaillant Group, a family-owned business that was founded by Johann Vaillant in his workshop in
Remscheid, Germany in 1874.
In 1894, Johann patented a new closed-system gas-fired bathroom boiler. Johann’s technical innovations continued and in 1924,
he launched the world’s first central heating boiler. Since these revolutionary inventions, the Vaillant brand has become synonymous
with innovative heating solutions and continues to drive the evolution of heating technologies to this day.
The Vaillant Group is still family owned, and the family’s consideration for safeguarding the environment for future generations runs
through everything that Vaillant does. Vaillant is passionate about developing technologies that use the quality and efficiency of
German engineering to create heating solutions that reduce carbon emissions and energy use to help to reduce our impact on
the planet.
As the premium brand for sustainable and responsible heating and hot water solutions, it is Vaillant’s mission to create a better
climate, inside each home and the world around it.
There are now over 13,000 employees across 10 sites around the world who share this vision.
3
Setting the standards since 1874
Manufacturing at its finest
At Vaillant, we think ahead. By choosing our heating appliances, you choose the pioneering excellence of German design and UK
manufacturing expertise that create reliable products specially designed for application in all markets.
As well as designing products to be as efficient as possible, we constantly review and update our manufacturing processes and
environments.
Our UK factory continues to receive awards year after year in many categories. In addition to the many manufacturing awards we have
received, we are especially proud to have been awarded the RoSPA Gold Award for world-class health and safety management systems
for three consecutive years. We also have a gold Investors in People Award.
Vaillant has very high standards in manufacturing to ensure we make outstanding products. Our products meet ISO 9001, 18001,
14000 and many are Quiet MarkTM approved, which means that they use innovative and efficient technology that guarantees reduced
noise levels.
4
Why choose a Vaillant product? We always recommend our appliances are fitted with a Vaillant
Vaillant manufactures one of the largest ranges of boilers in control. Vaillant has a wide range of controls, and each uses
the world and has its own renewables portfolio. From simple eBUS, our proprietary technology that ensures each element
boilers for small dwellings to complex hybrid systems for of a Vaillant system can communicate to ensure it is always
commercial premises, Vaillant has a solution for every building’s working with ultimate efficiency.
requirements.
All our controls come with load compensation as standard.
Our core business is our award winning domestic boiler range. Every Vaillant heating appliance can be matched with the
Vaillant produces wall-hung boilers with outputs from 12kW perfect control to ensure compliance with Boiler Plus legislation.
to 64kW and has open vent, system and combination models.
With a wide range of flue options and a vast catalogue of Vaillant’s controls range from simple analogue controls to smart
accessories, including our own range of cylinders, we are app-controlled models that can be integrated with smart home
confident we have a solution for every installation. We can even systems and alert you to faults.
offer a unique combination storage boiler that has a 20 litres
per minute flow rate. Our new range of senso controls have been designed to be
incredibly easy to use and, with a stylish contemporary design,
Vaillant also manufactures boilers for commercial installations. will look beautiful wherever they’re sited.
Vaillant’s commercial portfolio consists of large output wall-
hung and floor-standing condensing boilers with compatible
cascade rigs and accessories to cater for simple and large scale
projects.
5
Introducing Green iQ
A smart badge: Green iQ
The Vaillant brand demonstrates the philosophy of the Vaillant Group with the development of our flagship Green iQ range of
boilers and heat pumps. We are proud that these products are incredibly efficient, have a low carbon footprint, are more than 85%
recyclable and are engineered to be networked for the future.
The products in the Green iQ range combine our complete range of smart technologies and features to provide great performance.
The ecoTEC exclusive with Green iQ range of boilers intelligently manages energy consumption and output. This ensures the
components of each boiler only work as hard as necessary to ensure optimum performance. Components will therefore last longer
and be more reliable, reducing overall maintenance costs.
The ecoTEC exclusive with Green iQ range consists of two large output combi boilers with a host of features including extra
condense technology. The system boiler in the range includes an integrated diverter valve, a first for Vaillant UK.
6
ecoTEC exclusive with Green iQ
Combi boilers
Overview
The ecoTEC exclusive is our first ever boiler range with the Green iQ technology. Combining our complete range of smart
technologies and features, you can be sure you’re fitting the very best when you fit an ecoTEC exclusive combi.
As well as providing great performance, the ecoTEC exclusive intelligently manages consumption and output to keep all its
components running at peak performance, for longer, providing a low maintenance solution that you can rely on.
The combi range features 35kW and 43kW models, which can deliver much higher than average central heating outputs and hot
water flow rates, making the ecoTEC exclusive a must have for larger properties. Additionally, the design of the ecoTEC exclusive
combination boilers allows domestic hot water to be pre-heated using what would be wasted flue gas energy (full heat condense).
This makes the boiler best in class for efficiency and Boiler Plus compliant out of the box.
All models in the ecoTEC exclusive range have patented high quality stainless steel heat exchangers that provide superior heat
transfer and highly efficient performance.
7
Key features and benefits • 10-year guarantee available
• Boiler Plus compliant out of the box A free five year guarantee comes as standard, rising to
seven years out of the box when registered on Advance. A
Full heat condense
10-year guarantee is available when boilers are installed
• Green iQ mode with a Boiler Protection Kit and registered on Advance
Outstanding eco-credentials which optimise running • Easy installation and maintenance
cycles, resulting in even lower gas consumption
Accessible layout allows all components to be replaced
• Highly recyclable from the boiler front. Removable side panels for even
ecoTEC exclusive is 85% recyclable at the end of its life more access
• Premium quality components • Step by step full text installation wizard
Includes brass diverter valve, ensuring highest reliability For quicker, ‘first time right’ set-up and installation
and performance • High power, 43kW output model available
• Wide modulation range of up to 1:10 Delivers Vaillant’s highest ever flow rate
Adapts perfectly to all systems in every situation, • All-gas system
ensuring lowest fuel bills for your customers
As a self-adaptive system, it automatically adjusts to all
• Extra condense stainless steel heat exchanger types of gas including LPG for off-gas areas
Takes overall combi boiler efficiency to the next level, • Compatible with Vaillant’s range of intelligent controls
and almost eliminates plume in DHW mode
Delivers an easy to use and energy efficient system,
• Quiet Mark accreditation saving money on energy bills
One of the quietest boilers on the market, designed for a • Flame lift detection system
peaceful home
For enabling more efficient and quieter combustion
• Self diagnostic combustion intelligence
Includes flame lift detection for more efficient and
quieter combustion
Dimensions: Clearances:
440mm
720mm
B
Note: A 500mm front
clearance is recommended
to allow easy access during
Installation depth Dimension B inspection and maintenance
ecoTEC exclusive 835 406mm
ecoTEC exclusive 843 474mm
8
ecoTEC plus
Combi boilers
Overview
The ecoTEC plus range of combination boilers is extremely reliable. All models have the quality of components and manufacturing
that Vaillant is known for, providing outstanding performance and build quality.
With continuous modulation and real combustion control by a multi-sensor system, Vaillant’s ecoTEC plus boilers achieve high
efficiency at the lowest emissions.
The ecoTEC plus is available in a range of power outputs to meet the heating requirements of varying house sizes. Each one is ultra-
quiet, a feature recognised by the Noise Abatement Society, which has awarded many of the ecoTEC plus range the Quiet Mark for
its innovative design, specifically created to ensure a peaceful home for your customers.
9Key features and benefits • Dedicated models available for LPG
• Boiler Plus compliant with Vaillant controls A perfect solution for off-gas areas
Install with sensoHOME, sensoCOMFORT, vSMART, or VRC • Compatible with Vaillant’s range of intelligent controls
700 for a smart weather compensated system Delivers an easy to use and energy efficient system, saving
• Premium quality components money on energy bills
Includes brass diverter valve, ensuring highest reliability • Electronic gas and air modulation system
and performance Allows precise self setting gas combustion to improve
• Wide modulation range of up to 1:6 performance and lower emissions
Adapts perfectly to all systems in every situation, ensuring • Flame lift detection system
lowest fuel bills for your customers Enables more efficient and quieter combustion
• Patented stainless steel heat exchanger • Push fit flue system with industry leading flue lengths
Provides superior heat transfer and highly 80/125 flue adaptor and system for even longer lengths
efficient performance and installation flexibility
• 10-year guarantee available • Large backlit plain text display
A free five year guarantee comes as standard, rising to Delivers clear visibility in poor light conditions and easy
seven years out of the box when registered on Advance. A reading of current boiler operation
10-year guarantee is available when boilers are installed
with a Boiler Protection Kit and registered on Advance • Features Vaillant’s exclusive AquaComfort system
• Easy installation and maintenance Provides quick delivery of hot water at a constant
temperature, which reduces unnecessary water wastage
Accessible layout allows all components to be replaced
from the boiler front. Removable side panels for even • Integrated filling loop
more access Makes installation even quicker
• Step by step full text installation wizard • Built-in two-stage frost protection
For error free, quick and simple set-up and installation Ensures optimal performance all year round
• 38kW output model available
Delivers a range of flow rates to suit all properties
Dimensions: Clearances:
440mm
720mm
B
Note: A 500mm front
clearance is recommended
to allow easy access during
Installation depth Dimension B
inspection and maintenance
ecoTEC plus 825
338mm
ecoTEC plus 832
ecoTEC plus 835 372mm
ecoTEC plus 838 406mm
10ecoTEC plus
Storage combi boilers
Overview
The ecoTEC plus storage combi is a 38kW high efficiency storage combination boiler which has been designed especially for larger
homes that have a higher hot water demand, but not enough to warrant the installation of a cylinder.
The ecoTEC plus storage combi features an innovative integrated hot water storage device at the back of the boiler. This special
feature means the product is capable of delivering up to 20 litres of hot water per minute.
The ecoTEC plus storage combi has a stainless steel heat exchanger alongside the premium components you expect from a Vaillant
appliance.
11Key features and benefits • Innovative 38kW solution for large homes
• Boiler Plus compliant with Vaillant controls Integrated hot water storage delivers best in class flow
rates to suit a range of properties
Install with sensoHOME, sensoCOMFORT, vSMART, or VRC
700 for a smart weather compensated system • Compatible with Vaillant’s range of intelligent controls
• Premium quality components Delivers an easy to use and energy efficient system, saving
money on energy bills
Includes brass diverter valve, ensuring highest reliability
and performance • Electronic gas and air modulation system
• Wide modulation range of up to 1:6 Allows precise self setting gas combustion to improve
performance and lower emissions
Adapts perfectly to all systems in every situation, ensuring
lowest fuel bills for your customers • Flame lift detection system
• Patented stainless steel heat exchanger Enables more efficient and quieter combustion
Provides superior heat transfer and highly efficient • Push fit flue system with industry leading flue lengths
performance 80/125 flue adaptor and system for even longer flue
• 10-year guarantee available lengths and installation flexibility
A free five year guarantee comes as standard, rising to • Large backlit plain text display
seven years out of the box when registered on Advance. A Delivers clear visibility in poor light conditions and easy
10-year guarantee is available when boilers are installed reading of current boiler operation
with a Boiler Protection Kit and registered on Advance
• Integrated filling loop
• Easy installation and maintenance
Makes installation even quicker
Accessible layout allows all main boiler components to be
replaced from the boiler front • Built-in two-stage frost protection
• Step-by-step full text installation wizard Ensures optimal performance all year round
For error free, quick and simple set-up and installation
Dimensions: Clearances:
440mm
720mm
600mm
Note: A 500mm front
clearance is recommended
to allow easy access during
inspection and maintenance
12ecoTEC pro
Combi boilers
Overview
The ecoTEC pro range of combination boilers combines the built-in quality, reliability, and performance you’d expect from Vaillant,
with a simple design and approach.
The range features 24, 28, and 30kW models, making this boiler perfect for homes with smaller heating and hot water
requirements.
With a small footprint and compact dimensions, the ecoTEC pro combination boilers offer versatile siting options. They’re also really
easy to install and service, with a push-fit flue system and removable side panels to make life that much easier.
The ecoTEC pro has an LPG version of this boiler, so it’s perfect for off-gas areas. It’s also compatible with our aroTHERM heat
pumps, offering even more choice for off-grid properties.
13Key features and benefits • Dedicated model available for LPG
• Boiler Plus compliant with Vaillant controls A great solution for off-gas areas
Install with sensoHOME, sensoCOMFORT, vSMART, or VRC • Compatible with Vaillant’s range of intelligent controls
700 for a smart weather compensated system Delivers an easy to use and energy efficient system,
• Quality components saving money on energy bills
Quality and reliabilty you would expect from Vaillant • Electronic gas and air modulation system
• Wide modulation range of up to 1:5 Allows precise self setting gas combustion to improve
performance and lower emissions
Adapts perfectly to most systems in domestic
applications, resulting in lower fuel bills for your • Flame lift detection system
customers Enables more efficient and quieter combustion
• Patented stainless steel heat exchanger • Push fit flue system with industry leading flue lengths
Provides superior heat transfer and highly 80/125 flue adaptor and sytem for even greater flue
efficient performance lengths
• Seven year guarantee available • Plain text display
A free two year guarantee comes as standard, rising to High quality text for clear visibility and understanding of
seven years out of the box when registered on Advance current boiler operation
• Easy installation and maintenance • Features Vaillant’s exclusive AquaComfort system
Accessible layout allows all components to be replaced Provides quick delivery of hot water at a constant
from the boiler front. Removable side panels for even temperature, preventing unnecessary water wastage
more access
• ErP A rated boiler range
• Step by step installation wizard
Delivers highest efficiency and lowest running costs
For error free, quick and simple set-up and installation
• Built-in two-stage frost protection
• 30kW output model available
Ensures optimal performance all year round
Delivers a range of flow rates to suit all properties
Dimensions: Clearances:
440
720
338
Note: A 500mm front
clearance is recommended
to allow easy access during
inspection and maintenance
14ecoFIT pure
Combi boilers
Overview
Ultra-quiet operation, a small footprint and total flexibility of siting (with top and rear flue options) mean that the ecoFIT pure range
fits in with your customers’ needs. It’s the perfect solution for fitting inside a standard kitchen cupboard unit.
The automatic purging assistant and high specification, automotive grade, aluminium heat exchanger makes for a lightweight
installation.
With high quality, highly efficient components, complete availability of spare parts and an accessible layout, the ecoFIT pure is easy
to maintain and service.
15Key features and benefits • Easy installation and maintenance
• Compact, cupboard fit solution Accessible layout allows all components to be replaced
from the boiler front. Removable side panels for even
A smaller footprint and cupboard fit dimensions more access
offers flexibility of siting
• 35kW output model available
• Four-sided cooling and water agitation of the heat
Delivers a range of flow rates to suit all properties
exchanger
• Compatible with Vaillant’s range of intelligent controls
Reduces the stress on the heat exchanger for longer life
reliability and reduced maintenance costs Delivers an easy to use and energy efficient system, saving
money on energy bills
• Boiler Plus compliant with Vaillant controls
• Pneumatic gas and air modulation system
Install with VRT 350 or VRT 50 + timeSWITCH 150 for a
load compensated system For precise self setting gas combustion to improve
performance and lower emissions
• Premium quality components
• Top and rear flue options
For great reliability and performance
Flue options and cupboard fit dimensions offer flexibility
• Wide modulation range of up to 1:5 of siting
Adapts perfectly to most systems in domestic
• Push fit flue system with industry leading flue lengths
applications, resulting in lower fuel bills for your
customers 80/125 vertical flue lengths of up to 25m for greater
installation flexibility
• H
igh-specification aluminium heat exchanger
• Bright clear LED display
Designed for longer life, easier maintenance, and smaller
energy bills Delivers clear visibility in poor light conditions and easy
reading of current boiler operation
• Seven year guarantee available
• ErP A rated boiler range
A free two year guarantee comes as standard, rising to
seven years out of the box when registered on Advance. Delivers highest efficiency and lowest running costs
It’s also eligible for a 10-year guarantee when fitted with • Integrated filling loop
our Boiler Protection Kit
Makes installation even quicker
Dimensions: Clearances:
390
700
295
Note: A 500mm front
clearance is recommended
to allow easy access during
inspection and maintenance
16ecoTEC exclusive with Green iQ
System boilers
Overview
The ecoTEC exclusive is our first ever boiler with Green iQ technology. Combining our complete range of smart technologies and
features, you can be sure you’re fitting the very best when you fit new the new 27kW ecoTEC exclusive with Green iQ system boiler.
As well as providing great performance, the ecoTEC exclusive intelligently manages consumption and output to keep all its
components running at peak performance, for longer, providing a low maintenance solution that you can rely on.
The ecoTEC exclusive system boiler includes an integrated diverter valve for the first time in UK Vaillant history.
17Key features and benefits • Easy installation and maintenance
• Green iQ Mode Accessible layout allows all components to be replaced
from the boiler front. Removable side panels for even
Outstanding eco-credentials which optimise running
more access
cycles, resulting in even lower gas consumption
• Step-by-step full text installation wizard
• Highly recyclable
For error free, quick and simple set-up and installation
ecoTEC exclusive is 85% recyclable at the end of its life
• All-gas system
• Premium quality components
Always reaches optimal combustion with lowest emissions.
Ensures highest reliability and performance As a self-adaptive system, it automatically adjusts to all
types of gas
• Wide modulation range of up to 1:10
Adapts perfectly to all systems in every situation, resulting • Compatible with Vaillant’s range of intelligent controls
in lower fuel bills for your customers Delivers an easy to use and energy efficient system, saving
money on energy bills
• Patented stainless steel heat exchanger
Provides superior heat transfer and highly efficient • Integrated three-way valve
performance Four-pipe system with load compensation in DHW and CH
modes. No more complex wiring systems, junction boxes
• 10-year guarantee available or external zone valves
A free five year guarantee comes as standard, rising to
seven years out of the box when registered on Advance. A • Push fit flue system with industry leading flue lengths
10-year guarantee is available when boilers are installed 80/125 vertical flue lengths for even greater flue lengths
with a Boiler Protection Kit and registered on Advance
Dimensions: Clearances:
440mm
720mm
338mm
Note: A 500mm front
clearance is recommended
to allow easy access during
inspection and maintenance
18ecoTEC plus
System boilers
Overview
The ecoTEC plus range of boilers is extremely reliable. All models have the quality of components and manufacturing that Vaillant is
known for, providing outstanding performance and build quality.
With continuous modulation and real combustion control by a multi-sensor system, Vaillant’s ecoTEC plus boilers achieve high
efficiency at the lowest emissions.
The ecoTEC plus system boiler is available in a range of power outputs to meet the heating requirements of varying house sizes.
With outputs of 12, 15, 18, 24 ,30 and 37kWs, there’s a perfect size for the requirements of most domestic buildings.
Whichever output you choose, you can be assured it is ultra-quiet, a feature recognised by the Noise Abatement Society, which has
awarded the ecoTEC plus range the Quiet Mark for its innovative design, specifically created to ensure a peaceful home for your
customers.
19Key features and benefits • Dedicated models available for LPG
• Boiler Plus compliant with time and temperature A great solution for off-gas areas
controls • Electronic gas and air modulation system
Install with VRT 15, timeSWITCH 160 and VR 66 Allows precise self setting gas combustion to improve
wiring centre for the easiest way to meet Boiler Plus performance and lower emissions
• Premium quality components • Flame lift detection system
For highest reliability and performance Enables more efficient and quieter combustion
• Wide modulation range of up to 1:6 • Push fit flue system with industry leading flue lengths
Adapts perfectly to all systems in every situation, 80/125 vertical flue lengths of up to 41m for greater
resulting in lower fuel bills for your customers installation flexibility
• Patented stainless steel heat exchanger • Large backlit plain text display
Provides superior heat transfer and highly Delivers clear visibility in poor light conditions and easy
efficient performance reading of current boiler operation
• 10-year guarantee available • Compatible with heat pump hybrid system
A free five year guarantee comes as standard, rising to Can be fitted with an aroTHERM heat pump to create a
seven years out of the box when registered on Advance. A hybrid system
10-year guarantee is available when boilers are installed
with a Boiler Protection Kit and registered on Advance • Precise German engineering and design
• Easy installation and maintenance Quality manufacturing from award winning factory
in Derbyshire
Accessible layout allows all components to be replaced
from the boiler front. Removable side panels for even • R
ecognisable Vaillant fault codes
more access Making it easy to diagnose faults
• Step by step full text installation wizard
For error free, quick and simple set-up and installation
Dimensions: Clearances:
440mm
720mm
B
Note: A 500mm front
clearance is recommended
to allow easy access during
Installation depth Dimension B inspection and maintenance
ecoTEC plus 612
ecoTEC plus 615
338mm
ecoTEC plus 618
ecoTEC plus 624
ecoTEC plus 630 372mm
ecoTEC plus 637 406mm
20ecoTEC plus
Large output system boilers
Overview
The ecoTEC plus 48 and 64kW boilers are compact in size and extremely lightweight. The front and side panels can be removed,
allowing for much easier access in tight and restrictive spaces.
The internal ducted rain collector prevents rain ingress from the flue system depositing in the boiler casing, and the new gunmetal
air separation device prevents unwanted vented emissions within the case, both of which help to protect the electronics inside the
boiler. ecoTEC plus 48 and 64kW can be converted to LPG to cater for projects that are unable to use a natural gas supply. These boilers
can be cascaded for projects that require outputs above 70kW.
21Key features and benefits • Electronic gas and air modulation system
• Compact dimensions Allows for precise self setting gas combustion to improve
performance and lower emissions
For easy siting in tight spaces
• A range of push fit flue systems available
• ErP A+ rated
80/125 vertical, horizontal and facade flue accessories for
When installed with a class VI control
greater installation flexibility
• Low NOx burner system
• Large backlit plain text display
Levels as low as 29mg/kWh to minimise environmental
Delivers clear visibility in poor light conditions and easy
impact
reading of current boiler operation
• Premium quality components
• Built-in two-stage frost protection
Ensures highest reliability and performance
Ensures optimal performance all year round
• Wide modulation range of up to 1:5
• Compatible with heat pump hybrid system
Adapts perfectly to all systems in every situation, resulting
Can be fitted with an aroTHERM heat pump to create a
in lower fuel bills for your customers
hybrid system
• Patented stainless steel heat exchanger
• Recognisable Vaillant fault codes
Provides superior heat transfer and highly efficient
For easy diagnosis
performance
• Out of the box guarantees
• Easy installation and maintenance
Five-year guarantee as standard, for added peace of mind
Accessible layout allows all components to be replaced
from the boiler front. Removable side panels for even • Ability to cascade
more access For flexible siting and increased outputs of up to 256kW.
• Step by step full text installation wizard Cascaded larger output boilers can operate up to 3bar
For error free, quick and simple set-up and installation
• Compatible with LPG
A great solution for off-gas areas
Dimensions: Clearances:
440mm
350mm, 80/125 flue
720mm
B
Note: A 500mm front
clearance is recommended
to allow easy access during
Installation depth Dimension B
inspection and maintenance
ecoTEC plus 48 405mm
ecoTEC plus 64 473mm
Note: Our larger output boilers must be fitted with Vaillant’s proprietary low loss header (WH40/2 article number 0020248932)
designed to fit directly under the boiler
22ecoFIT pure
System boilers
Overview
ecoFIT pure system boilers offer great features and a wide range of outputs, with 12, 15, 18, 25 and 30kW outputs. They’re all ultra-
quiet in operation, have a small footprint and flexible siting options (including a choice of top or rear flues).
The automatic purging assistance and high specification, aluminium heat exchanger make for a lightweight installation.
With high quality, highly efficient components, complete availability of spare parts and an accessible layout, the ecoFIT pure easy to
maintain and service.
23Key features and benefits • Top and rear flue options
A smaller footprint and cupboard fit dimensions offer
• Premium quality components
flexibility of siting
Ensuring highest reliability and performance
• Push fit flue system with industry leading flue lengths
• Boiler Plus compliant with time and temperature 80/125 vertical flue lengths of up to 25m for greater
controls installation flexibility
Install with VRT 15, timeSWITCH 160 and VR 66 • Bright clear LED display
wiring centre for the easiest way to meet Boiler Plus
Delivers clear visibility in poor light conditions and easy
• Wide modulation range of up to 1:5 reading of current boiler operation
Adapts perfectly to all systems in every situation, • ErP A rated boiler
resulting in lower fuel bills for your customers Delivers highest efficiency and lowest running costs
• Patented high-specification aluminium heat exchanger • Built-in two-stage frost protection
Designed for longer life, easier maintenance and Ensures optimal performance all year round
smaller energy bills
• Patented four-sided cooling and water agitation of the
• Out of the box guarantees heat exchanger
Two year free guarantee can be extended to seven
Reduces stress on the heat exchanger for longer life
years when installs are registered on Advance. It’s also
reliability and reduced maintenance costs
eligible for a 10-year guarantee when fitted with our
Boiler Protection Kit. • Precise German engineering and design
Quality manufacturing from award winning factory
• Easy installation and maintenance
in Derbyshire
Accessible layout allows all components to be replaced
from the boiler front. Removable side panels for even • Recognisable Vaillant fault codes
more access For easy fault diagnosis
• Pneumatic gas and air modulation system
Allows precise self setting gas combustion to improve
performance and lower emissions
Dimensions: Clearances:
390
700
295
Note: A 600mm front
clearance is recommended
to allow easy access during
inspection and maintenance
24ecoTEC plus
Open vent boilers
Overview
The ecoTEC plus range of open vent boilers is extremely reliable. All models have the quality of components and manufacturing that
Vaillant is known for, providing outstanding performance and build quality.
With continuous modulation and real combustion control by a multi-sensor system, Vaillant’s ecoTEC plus boilers achieve high
efficiency at the lowest emissions. These boilers have an aluminium heat exchanger with wide waterways: an ideal choice for older
properties.
They’re available with outputs of 12, 15, 18 ,24, 30 and 35kW, so there’s an ecoTEC plus open vent boiler that can meet the heating
requirements of varying house sizes.
Each one is ultra-quiet, a feature recognised by the Noise Abatement Society, which has awarded the ecoTEC plus range the Quiet
Mark for its innovative design, specifically created to ensure a peaceful home for your customers.
25Key features and benefits • Dedicated model available for LPG
Great solution for off-gas areas
• Wide modulation range of up to 1:5
Adapts perfectly to all systems in every situation, • Electronic gas and air modulation system
resulting in lower fuel bills for your customers Allows for precise self setting gas combustion to
improve performance and lower emissions
• Boiler Plus compliant with time and temperature
controls • Top and rear flue options
Flue options and cupboard fit dimensions offer flexibility
Install with VRT 15, timeSWITCH 160 and VR 66
of siting
wiring centre for the easiest way to meet Boiler Plus
• Push fit flue system with industry leading flue lengths
• High-specification aluminium heat exchanger
80/125 vertical flue lengths of up to 25m for greater
Designed for longer life, easier maintenance and
installation flexibility
smaller energy bills
• Bright clear LED display
• 10 year guarantee available
A free five year guarantee comes as standard, rising to Delivers clear visibility in poor light conditions and easy
seven years out of the box when registered on Advance. reading of current boiler operation
A 10 year guarantee is available when boilers are installed
with a Boiler Protection Kit and registered on Advance • ErP A rated boiler
Delivers highest efficiency and lowest running costs
• Easy installation and maintenance
• Compatible with heat pump hybrid system
Accessible layout allows all components to be replaced Can be fitted with an aroTHERM heat pump to create a
from the boiler front. Removable side panels for even hybrid system
more access
• Compact, cupboard fit solution
Smaller boiler footprint offers flexibility of siting, including
a cupboard fit
Dimensions: Clearances:
375mm
602mm
295mm
Note: A 600mm front
clearance is recommended
to allow easy access during
inspection and maintenance
26ecoFIT pure
Open vent boilers
Overview
The ecoFIT pure range of open vent boilers has a wide range of outputs to choose from, with 12, 15, 18, 25, 30 and 35kW models
available. With ultra-quiet operation, a small footprint and flexible siting options (including a choice of top or rear flues), the ecoFIT
pure range has a model to fit your customers’ needs.
The automatic purging assistance and high specification, aluminium heat exchanger make for a lightweight installation.
High quality and high efficiency, together with the complete availability of spare parts and the easy accessibility of the unit layout
means the ecoFIT pure is easy to maintain too.
27Key features and benefits • Pneumatic gas and air modulation system
• Premium quality components Allows precise self setting gas combustion to improve
performance and lower emissions
For great reliability and performance
• Top and rear flue options
• Wide modulation range of up to 1:5
Flexible flue options to suit various properties
Adapts perfectly to all systems in every situation,
ensuring lowest fuel bills for your customers • Push fit flue system with industry leading flue lengths
80/125 vertical flue lengths of up to 25m for greater
• Boiler Plus compliant with time and temperature installation flexibility
controls
• Bright clear LED display
Install with VRT 15, timeSWITCH 160 and VR 66 Delivers clear visibility in poor light conditions and easy
wiring centre for the easiest way to meet Boiler Plus reading of current boiler operation
• High-specification aluminium heat exchanger • ErP A rated boiler
Designed for longer life, easier maintenance, and lower Delivers highest efficiency and lowest running costs
energy bills
• Built-in two-stage frost protection
• Seven year guarantee available Ensures optimal performance all year round
A free two year guarantee comes as standard and is
extended to seven years when registered on Advance • Patented four-sided cooling and water agitation of the
heat exchanger
• Easy installation and maintenance
Reduces stress on the heat exchanger to increase
Accessible layout allows all components to be replaced longevity and reliability while reducing maintenance costs
from the boiler front. Removable side panels for even
more access • Precise German engineering and design
Quality manufacturing from Vaillant’s award winning
• Compact, cupboard fit solution factory in Derbyshire
Flexible siting options due to small footprint and
cupboard fit dimensions • Recognisable Vaillant fault codes
For easy fault diagnosis
Dimensions: Clearances:
375
602
295
Note: A 600mm front
clearance is recommended
to allow easy access during
inspection and maintenance
28Technical data
ecoTEC ecoTEC
Technical data Unit of measure
exclusive 835 exclusive 843
General
Boiler type Combi
Signature model output kW 35 43
Article number 0010017064 0010017065
Gas Council number 47-044-66 47-044-67
Boiler dimensions (HxWxD) mm 720 x 440 x 406 720 x 440 x 474
Performance
NOx (En 15502-2-1) mg/kWh 35 36
ErP efficiency (heating / DHW) A+++ - D / A+ - F A /A
ErP efficiency % 94
ErP decibel rating (sound power) dBa 43 51
Heating
Nominal heat output range at 50/30˚C
kW 3.9 - 26.4 4.8 - 36.0
(condensing mode)
Nominal heat output range at 80/60˚C
kW 3.4 - 24.6 4.3 - 33.4
(non condensing mode)
Maximum flow temperature ˚C 85
Flow temperature range ˚C 30 - 80
Flow temperature factory setting ˚C 75
Approximate condensate volume at 50/30˚C Litres/hr 2.48 3.37
Modulation (max/min) 1:X 1:10.4 1:10.1
Domestic hot water
Maximum heat output for water generation kW 35.3 43.4
Lowest water pressure to operate boiler Bar 0.35
Lowest water flow for operation l/min 1.5
Lowest water pressure for maximum flow rate Bar 0.8
Domestic hot water flow rate (at ∆t = 35K) l/min 14.5 17.8
Domestic hot water flow rate (at ∆t = 45K)* l/min 11.2 13.8
Hot water output temperature range ˚C 35 - 65
Mechanical
Expansion vessel size Litres 10
Gas inlet connection (pipe size) mm 15 20
Heating flow and return connections (pipe size) mm 22
Hot and cold water connections (pipe size) mm 15
Heat exchanger material Stainless/Aluminium Stainless steel
Boiler lift weight (dry boiler) kg 47.5 55.0
Maximum horizontal flue length 60/100 m 5.5
Rear flue options Yes/No No
Permissible flue classifications C13, C33, C53
Minimum clearances
Side left and right mm 5
Top mm 165
Top (if using rear flue) mm -
Below mm 180 300
Front mm 500
*Achieved via fitment of a flow restrictor
29ecoTEC
Unit of ecoTEC ecoTEC ecoTEC ecoTEC
Technical data plus
measure plus 825 plus 832 plus 835 plus 838
832 LPG
General
Boiler type Combi
Signature model output kW 25 32 32 35 38
Article number 0010021823 0010021824 0010021825 0010021822 0010021826
Gas Council number 47-044-83 47-044-84 47-044-85 47-044-82 47-044-86
720 x 440 720 x 440
Boiler dimensions (HxWxD) mm 720 x 440 x 338
x 372 x 406
Performance
NOx (En 15502-2-1) mg/kWh 32 35 55 29 34
A+++ - D /
ErP efficiency (heating / DHW) A /A
A+ - F
ErP efficiency % 94
ErP decibel rating (sound power) dBa 47 46 45
Heating
Nominal heat output range at 50/30˚C
kW 4.1 - 20.8 5.7 - 26.4 6.5 - 25.5 6.4 - 32.8 7.1 - 30.9
(condensing mode)
Nominal heat output range at 80/60˚C
kW 3.8 - 19.3 5.2 - 24.4 6.0 - 24.4 5.8 - 30.4 6.5 - 28.6
(non condensing mode)
Maximum flow temperature ˚C 85
Flow temperature range ˚C 30 - 80
Flow temperature
˚C 75
factory setting
Approximate condensate
Litres/hr 2.0 2.5 3.1 2.9
volume at 50/30˚C
Modulation (max/min) 1:X 1:6.7 1:6.1 1:5.3 1:6.0 1:6.0
Domestic hot water
Maximum heat output for water
kW 25.4 31.8 35.0 38.7
generation
Lowest water pressure to operate boiler Bar 0.35
Lowest water flow for operation l/min 2
Lowest water pressure for maximum
Bar 0.8
flow rate
Domestic hot water flow rate
l/min 10.5 13.0 14.3 15.9
(at ∆t = 35K)
Domestic hot water flow rate
l/min 8.8 10.9 11.9 13.2
(at ∆t = 42K)*
Hot water output temperature range ˚C 35 - 65
Mechanical
Expansion vessel size Litres 10
Gas inlet connection (pipe size) mm 15
Heating flow and return connections
mm 22
(pipe size)
Hot and cold water connections
mm 15
(pipe size)
Stainless/
Heat exchanger material Stainless steel
Aluminium
Boiler lift weight (dry boiler) kg 36 37 41 44
Maximum horizontal flue length 60/100 m 12 5.5
Rear flue options Yes/No No
Permissible flue classifications C13, C33, C43, C53
Minimum clearances
Side left and right mm 5
Top mm 165
Top (if using rear flue) mm -
Below mm 180
Front mm 500
*Achieved via fitment of a flow restrictor
30Technical data Unit of measure ecoTEC plus 938
General
Boiler type Storage combi
Signature model output kW 38
Article number 0010021827
Gas Council number 47-044-87
Boiler dimensions (HxWxD) mm 720 x 440 x 624
Performance
NOx (En 15502-2-1) mg/kWh 34
ErP efficiency (heating / DHW) A+++ - D / A+ - F A /A
ErP efficiency % 94
ErP decibel rating (sound power) dBa 45
Heating
Nominal heat output range at 50/30˚C (condensing mode) kW 7.1 - 30.9
Nominal heat output range at 80/60˚C (non condensing mode) kW 6.5 - 28.6
Maximum flow temperature ˚C 85
Flow temperature range ˚C 30 - 80
Flow temperature factory setting ˚C 75
Approximate condensate volume at 50/30˚C Litres/hr 2.9
Modulation (max/min) 1:X 1:6.0
Domestic hot water
Maximum heat output for water generation kW 38.7
Lowest water pressure to operate boiler Bar 0.35
Lowest water flow for operation l/min 2
Lowest water pressure for maximum flow rate Bar 0.8
Domestic hot water flow rate (at ∆t = 35K) l/min 15.9
Domestic hot water flow rate (at ∆t = 42K)* l/min 13.2
Hot water output temperature range ˚C 35 - 65
Mechanical
Expansion vessel size Litres 10
Gas inlet connection (pipe size) mm 15
Heating flow and return connections (pipe size) mm 22
Hot and cold water connections (pipe size) mm 15
Heat exchanger material Stainless/Aluminium Stainless steel
Boiler lift weight (dry boiler) kg 43+17
Maximum horizontal flue length 60/100 m 5.5
Rear flue options Yes/No No
Permissible flue classifications C13, C33, C43, C53
Minimum clearances
Side left and right mm 5
Top mm 165
Top (if using rear flue) mm -
Below mm 180
Front mm 500
*Achieved via fitment of a flow restrictor
31Unit of ecoTEC pro 28
Technical data ecoTEC pro 24 ecoTEC pro 28 ecoTEC pro 30
measure LPG
General
Boiler type Combi
Signature model output kW 24 28 30
Article number 0010021836 0010021837 0010021838 0010016538
Gas Council number 47-044-88 47-044-89 47-044-90 47-044-52
Boiler dimensions (HxWxD) mm 720 x 440 x 338
Performance
NOx (En 15502-2-1) mg/kWh 27 28 30
A+++ - D /
ErP efficiency (heating / DHW) A /A
A+ - F
ErP efficiency % 94 93
ErP decibel rating (sound power) dBa 49
Heating
Nominal heat output range at 50/30˚C
kW 5.9 - 24.8 5.9 - 25.9 7.9 - 25.3 6.9 - 25.7
(condensing mode)
Nominal heat output range at 80/60˚C
kW 5.2 - 23.0 5.2 - 24 7.2 - 24.0 8.0 - 24.7
(non condensing mode)
Maximum flow temperature ˚C 85
Flow temperature range ˚C 30 - 80
Flow temperature
˚C 75
factory setting
Approximate condensate
Litres/hr 1.9 2.5
volume at 50/30˚C
Modulation (max/min) 1:X 1:4.3 1:5 1:3.6 1:3.8
Domestic hot water
Maximum heat output for water
kW 23.5 27.5 27.5 30.0
generation
Lowest water pressure to operate boiler Bar 0.3
Lowest water flow for operation l/min 2
Lowest water pressure
Bar 0.8
for maximum flow rate
Domestic hot water flow rate
l/min 9.6 11.1 11.1 12.3
(at ∆t = 35K)
Domestic hot water flow rate
l/min 8.0 9.3 10.2
(at ∆t = 42K)*
Hot water output temperature range ˚C 35 - 65
Mechanical
Expansion vessel size Litres 8
Gas inlet connection (pipe size) mm 15
Heating flow and return connections
mm 22
(pipe size)
Hot and cold water connections
mm 15
(pipe size)
Stainless/
Heat exchanger material Stainless steel
Aluminium
Boiler lift weight (dry boiler) kg 38 39
Maximum horizontal flue length 60/100 m 12
Rear flue options Yes/No No
Permissible flue classifications C13, C33, C43, C53
Minimum clearances
Side left and right mm 5
Top mm 165
Top (if using rear flue) mm -
Below mm 180
Front mm 500
*Achieved via fitment of a flow restrictor
32Technical data Unit of measure ecoFIT pure 825 ecoFIT pure 830 ecoFIT pure 835
General
Boiler type Combi
Signature model output kW 25 30 35
Article number 0010020389 0010020390 0010020391
Gas Council number 47-044-68 47-044-74 47-044-70
Boiler dimensions (HxWxD) mm 700 x 390 x 295
Performance
NOx (En 15502-2-1) mg/kWh 39 39 39
A+++ - D / A+
ErP efficiency (heating / DHW) A /A
-F
ErP efficiency % 94
ErP decibel rating (sound power) dBa 49 51 52
Heating
Nominal heat output range at 50/30˚C
kW 5.3 - 19.1 6.3 - 26.5 7.5 - 26.7
(condensing mode)
Nominal heat output range at 80/60˚C
kW 5.0 - 18.3 6.1 - 25.4 7.2 - 25.6
(non condensing mode)
Maximum flow temperature ˚C 80
Flow temperature range ˚C 10-80
Flow temperature factory setting ˚C 75
Approximate condensate volume at 50/30˚C Litres/hr 1.84 2.55 2.57
Modulation (max/min) 1:X 1:5.1 1:4.9 1:5
Domestic hot water
Maximum heat output for water generation kW 25.2 30 35
Lowest water pressure to operate boiler Bar 0.3
Lowest water flow for operation l/min 2
Lowest water pressure for maximum flow rate Bar 2
Domestic hot water flow rate (at ∆t = 35K) l/min 10.4 12.2 14.1
Domestic hot water flow rate (at ∆t = 42K)* l/min 8.0 10.4 12.0
Hot water output temperature range ˚C 35 - 60
Mechanical
Expansion vessel size Litres 8
Gas inlet connection (pipe size) mm 15
Heating flow and return connections
mm 22
(pipe size)
Hot and cold water connections (pipe size) mm 15
Stainless/
Heat exchanger material Aluminium
Aluminium
Boiler lift weight (dry boiler) kg 32 33
Maximum horizontal flue length 60/100 m 10
Rear flue options Yes/No Yes
Permissible flue classifications C13, C33, C43, C53
Minimum clearances
Side left and right mm 5
Top mm 150
Top (if using rear flue) mm 20
Below mm 150
Front mm 500
*Achieved via fitment of a flow restrictor
33Technical data Unit of measure ecoTEC exclusive 627
General
Boiler type System
Signature model output kW 27
Article number 0010017063
Gas Council number 41-694-02
Boiler dimensions (HxWxD) mm 720 x 440 x 338
Performance
NOx (En 15502-2-1) mg/kWh 30
ErP efficiency (heating) A+++ - D A
ErP efficiency % 94
ErP decibel rating (sound power) dBa 46
Heating
Nominal heat output range at 50/30˚C (condensing mode) kW 3.4 - 26.7
Nominal heat output range at 80/60˚C (non condensing mode) kW 3.0 - 24.7
Maximum flow temperature ˚C 85
Flow temperature range ˚C 30 - 80
Flow temperature factory setting ˚C 75
Approximate condensate volume at 50/30˚C Litres/hr 2.52
Modulation (max/min) 1:X 1:8.9
Mechanical
Expansion vessel size Litres 10
Gas inlet connection (pipe size) mm 15
Heating flow and return connections (pipe size) mm 22
Heat exchanger material Stainless/Aluminium Stainless steel
Boiler lift weight (dry boiler) kg 37.5
Maximum horizontal flue length 60/100 m 5.5
Rear flue options Yes/No No
Permissible flue classifications C13, C33, C53
Minimum clearances
Side left and right mm 5
Top mm 165
Top (if using rear flue) mm -
Below mm 180
Front mm 500
34Unit
of ecoTEC ecoTEC ecoTEC ecoTEC ecoTEC ecoTEC ecoTEC ecoTEC
Technical data
meas- plus 612 plus 615 plus 618 plus 618 plus 624 plus 630 plus 630 plus 637
ure
LPG LPG
General
Boiler type System
Signature model
kW 12 15 18 24 30 37
output
Article number 0010021828 0010021829 0010021830 0010021831 0010021832 0010021833 0010021834 0010021835
Gas Council number 41-694-20 41-694-21 41-694-22 41-694-23 41-694-24 41-694-25 41-694-26 41-694-27
Boiler dimensions 720 x 440
mm 720 x 440 x 338 720 x 440 x 372
(HxWxD) x 406
Performance
mg/
NOx (En 15502-2-1) 23 23 29 39 35 29 64 36
kWh
ErP efficiency A+++
A
(heating) -D
ErP efficiency % 94
ErP decibel rating
dBa 43 47 46 50
(sound power)
Heating
Nominal heat output
range at 50/30˚C kW 3.3 - 13.2 3.3 - 16.7 4.1 - 20.0 5.4 - 19.4 5.7 - 26.4 6.4 - 32.8 9.4 - 31.9 7.1 - 40.5
(condensing mode)
Nominal heat output
range at 80/60˚C
kW 3.0 - 12.2 3.0 - 15.2 3.8 - 18.2 5.0 - 18.2 5.2 - 24.4 5.8 - 30.4 8.5 - 30.4 6.4 - 37.6
(non condensing
mode)
Maximum flow
˚C 85
temperature
Flow temperature
˚C 30 - 80
range
Flow temperature
˚C 75
factory setting
Approximate Litres/
condensate 1.2 1.6 1.9 2.5 3.1 3.8
volume at 50/30˚C hr
Modulation (max/
1:X 1:4.1 1:5.1 1:4.9 1:3.7 1:4.7 1:5.2 1:5.9
min)
Mechanical
Expansion vessel size litres 10
Gas inlet connection
mm 15
(pipe size)
Heating flow and
return
mm 22
connections (pipe
size)
Heat exchanger
Stainless steel
material
Boiler lift weight
kg 36 37 38 43
(dry boiler)
Maximum horizontal
m 22.0 12.0 5.5
flue length 60/100
Rear flue options Yes/No No
Permissible flue
C13, C33, C43, C53
classifications
Minimum clearances
Side left and right mm 5
Top mm 165
Top (if using rear
mm -
flue)
Below mm 180
Front mm 500
35Technical data Unit of measure ecoTEC plus 48 ecoTEC plus 64
General
Boiler type System
Signature model output kW 48 64
Article number 0010021520 0010021521
Gas Council number 41-694-28 41-694-29
Boiler dimensions (HxWxD) mm 720 x 440 x 405 720 x 440 x 473
Performance
NOx (En 15502-2-1) mg/kWh 30.8 29.1
ErP efficiency* (heating) A+++ - D A+
ErP efficiency % 94
ErP decibel rating (sound power) dBa 56.5
Heating
Nominal heat output range at 50/30˚C
kW 8.7 - 48.0 12.2 - 63.5
(condensing mode)
Nominal heat output range at 80/60˚C
kW 7.8 - 44.1 11.0 - 58.7
(non condensing mode)
Conversion to LPG G31 at 37mb at 50/30˚C
kW 8.6 - 46.6 12.0 - 62.1
(Conversion kit by installer on site necessary)
Conversion to LPG G31 at 37mb at 80/60˚C
kW 7.8 - 44.0 11.0 - 58.4
((Conversion kit by installer on site necessary)
Maximum flow temperature ˚C 80
Flow temperature range ˚C 30 - 80
Flow temperature factory setting ˚C 75
Approximate condensate volume at 50/30˚C Litres/hr 5.0 6.9
Modulation (max/min) 1:X 1:5.5 (18%) 1:5.2 (19%)
Lowest water pressure to operate boiler bar 0.8
Nominal flow rate (at DT = 20K) l/hr 1900 2500
Mechanical
Expansion vessel size Litres Available as an accessory
Gas inlet connection (pipe size) BSP female 1”
Heating flow and return connections (pipe size) BSP female 1 1/4”
Heat exchanger material Stainless/Aluminium Stainless steel
Boiler lift weight (dry boiler - includes pump) kg 38 48
Maximum horizontal flue length 80/125 m 18 15
Maximum vertical flue length 80/125 m 21 18
Rear flue options Yes/No No
Permissible flue classifications C13, C33, C43, C53, C93, B23, B23p, B53, B53p
Minimum clearances
Side left and right mm 5
Top mm 350
Top (if using rear flue) mm -
Below mm 400
Front mm 500
*When installed with a VRC 7O0
36Unit of ecoFIT ecoFIT ecoFIT ecoFIT ecoFIT
Technical data
measure pure 612 pure 615 pure 618 pure 625 pure 630
General
Boiler type System
Signature model output kW 12 15 18 25 30
Article number 0010020395 0010020396 0010020397 0010020398 0010020399
Gas Council number 41-694-03 41-694-04 41-694-05 41-694-06 41-694-07
Boiler dimensions (HxWxD) mm 700 x 390 x 295
Performance
NOx (En 15502-2-1) mg/kWh 32 33 39 40
ErP efficiency (heating) A+++ - D A
ErP efficiency % 94
ErP decibel rating (sound power) dBa 45 48 49 51 54
Heating
Nominal heat output range at 50/30˚C
kW 4.7 - 12.8 4.7 - 15.9 5.2 - 19.1 6.4 - 26.5 7.5 - 31.8
(condensing mode)
Nominal heat output range at 80/60˚C
kW 4.5 - 12.3 4.5 - 15.2 5.0 - 18.3 6.1 - 25.4 7.2 - 30.5
(non condensing mode)
Maximum flow temperature ˚C 80
Flow temperature range ˚C 10 - 80
Flow temperature factory setting ˚C 75
Approximate condensate
Litres/hr 1.23 1.53 1.84 2.55 3.06
volume at 50/30˚C
Modulation (max/min) 1:X 1:3.3 1:4 1:5 1:4.9 1:4.9
Mechanical
Expansion vessel size Litres 8
Gas inlet connection (pipe size) mm 15
Heating flow and return connections (pipe
mm 22
size)
Stainless/
Heat exchanger material Aluminium
Aluminium
Boiler lift weight (dry boiler) kg 31 32
Maximum horizontal flue length 60/100 m 10
Rear flue options Yes/No Yes
Permissible flue classifications C13, C33, C43, C53
Minimum clearances
Side left and right mm 5
Top mm 150
Top (if using rear flue) mm 20
Below mm 150
Front mm 500
37Unit of ecoTEC ecoTEC ecoTEC ecoTEC ecoTEC plus ecoTEC ecoTEC
Technical data
measure plus 412 plus 415 plus 418 plus 424 424 LPG plus 430 plus 435
General
Boiler type Open vent
Signature model output kW 12 15 18 24 30 35
Article number 0010021220 0010021221 0010021222 0010021223 0020231355 0010021224 0010015674
Gas Council number 41-694-13 41-694-14 41-694-15 41-694-16 41-694-18 41-694-17 41-044-76
Boiler dimensions
mm 602 x 375 x 320
(HxWxD)
Performance
NOx (En 15502-2-1) mg/kWh 32 33 39 39 35 40 29
ErP efficiency
A+++ - D A
(heating)
ErP efficiency % 94 93
ErP decibel rating
dBa 45 48 51 52 49 55 53
(sound power)
Heating
Nominal heat output
range at 50/30˚C kW 4.7 - 12.8 4.7 - 15.9 5.2 - 19.1 6.3 - 25.7 8.0 - 25.7 7.5 - 31.8 7.5 - 37.1
(condensing mode)
Nominal heat output
range at 80/60˚C kW 4.5 - 12.3 4.5 - 15.2 5.0 - 18.3 6.1 - 24.6 7.6 - 24.3 7.2 - 30.5 7.1 - 35.1
(non condensing mode)
Maximum flow
˚C 80
temperature
Flow temperature range ˚C 10 - 80
Flow temperature
˚C 75
factory setting
Approximate condensate
Litres/hr 1.23 1.53 1.84 2.47 3.06 3.57
volume at 50/30˚C
Modulation (max/min) 1:X 1:2.8 1:3.5 1:3.8 1:4.2 1:3.4 1:4.4 1:5.2
Mechanical
Gas inlet connection
mm 15
(pipe size)
Heating flow and return
mm 22
connections (pipe size)
Heat exchanger material Aluminium
Boiler lift weight
kg 23.0 23.8
(dry boiler)
Maximum horizontal flue
m 10 0.7* 10
length 60/100
Rear flue options Yes/No Yes No Yes
Permissible flue
C13, C33, C43, C53 (LPG option can only be fitted with top horizontal flue supplied)
classifications
Minimum clearances
Side left and right mm 5
Top mm 150
Top (if using rear flue) mm 75
Below mm 150
Front mm 500
*Cannot be extended with any other standard Vaillant flue component. 0.7m flue is supplied with this boiler.
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