Commercial gas boilers condensing – 50kW to 1,920kW heat output

 

Commercial Gas Boilers – Available from 50kW to 280kW as single boilers or up to 1,920 kW in a cascade configuration for heating or and hot water heating via indirect cylinders. Commercial boilers work in exactly the same way as domestic boilers, but are designed and manufactured to efficiently cope with the higher hot water and heating demands of a commercial premises or businesses with outstanding performance levels and high thermal efficiency.

Our commercial boiler range all benefit from a stainless steel heat exchanger and condensing technology to maximise the efficiency of the central heating or heating and hot water, for your commercial heating applications. With stainless steel heat exchangers as standard, which carry a 5 year warranty (terms apply) your heating, be it radiators or an underfloor heating system and your hot water production is in safe hands with our commercial boiler range.

New for 2023

Our new modular floor standing boilers for commercial boiler installations, which are available in 180kW or 240kW units, can be cascaded up to 4 units at present (a maximum of 1,920 kW heat output)  and up to 10 units (so a maximum of 2,400 kW heat output) when our new cascade controller comes online by the summer of 2024.

Designated the R1KG 180 and R1KG 240 these commercial gas fired boilers benefit from stainless steel heat exchangers, high efficiency using condensing technology, fully modulating, floor standing gas boilers, made respectively of three, or four, primary heat exchangers of 60 kW heat output each with condensing technology in one boiler as such.

This boiler range benefit from very large output modulation range, with the 180kW boiler having a 30:1 turndown ratio and the 240kW boiler have a 40:1 turndown ratio (both boilers can modulate down to as low as  5.75kW !! ). This leads to maximum efficiency as the boilers can heat load match very precisely to the heating system and prevent unnecessary boiler cycling.

Both these models have integrated non return flue dampers valves, which means that each individual heat exchanger can be serviced whilst the others are operating. So, no boiler down time for servicing is required.Which makes these units a good option for commercial boilers for schools or health care / nursing home locations and industrial heating systems applications.

 

They have a low environmental impact (with low emissions of both CO and NOx) and are extremely compact commercial boilers because of their vertical configuration, making them the perfect solution for commercial premises that require outstanding performance levels and a small footprint.

These gas boilers, which are a condensing boiler have low emissions with a Class 6 NOx rating.

Technical data for these floor mounted modular gas boilers

 

 

This range is ideal for blocks of flats with heat interface units, or any other type of commercial applications

Download the Commercial gas floor standing boilers with condensing technology 180kW and 240kW manual Flexiheat UK

The following addition manual for the R1KG range further details the various cascade options – i.e. This commercial heating boiler range can be mounted in line (side by side)

or alternatively supplied in a back-to-back boiler configuration, enabling several commercial boilers to be installed in a limited area.

 

This manual is split into 2 parts due to its size

R1K Modular gas fired commercial floor standing boilers cascade manual – Part 1 pages 1 to 27

and

R1K Modular gas fired commercial floor standing boilers cascade manual – Part 2 pages 28 to 56

Gas commercial condensing boiler range

These highly efficient commercial boilers are available in both a natural gas boiler and LPG for the full range, with various commercial boiler models with an output range from 50 kW to 120 kW, in a wall hung or floor mounted when mounted on our free standing or floor standing frame kits configuration for easy installation. Making them the ideal boilers for commercial heating in any commercial premises or commercial business.

The perfect commercial central heating boiler range that can also do domestic hot water production via our commercial indirect hot water cylinders or calorifiers

These wall hung boilers work in a fully modulating range, which provides energy saving through 1:10 modulating operation for 50kW and 60kW commercial boilers.

 

and 1:20 for models 75kW, 100kW and 120kW wall hung boilers. As the larger units have 2 heat exchangers within the one casing, should one unit fail, you have 50% of your heating requirement still operational. You can also service one of the units when the other is still operational- so your heating system is never down .This is an important feature and benefit for these commercial gas fired boilers range.

 

These gas condensing boilers can be installed directly on the wall thanks to their reduced size and low weight, freeing up valuable space inside the boiler house of your commercial property or business.

These are wall hung boilers and can be coupled together in a commercial gas boiler modular configuration which you can think of as multiple boilers within “One Total Boiler” as such, this give this range of commercial boilers , a few distinct advantages when compared to others, in that – If one system boiler goes down or malfunctions, you still having the remaining modules to provide you with heat, thus increasing reliability , which can be vital in applications like nursing homes, hospitals or any other commercial applications where your require constant heating and hot water performance.

Furthermore, multiple boilers, when in a cascaded configuration have power control boards that communicate between them and handle the power output of every module in a uniform and coordinated way in order to guarantee the maximum heating efficiency, matched to the water heating requirement of the installation.

The performance of this commercial boiler range with a wide range of power outputs makes it one of the best gas condensing boilers to use in any commercial boiler installations, be it feeding radiators, radiant panels, fan-coils, underfloor heating etc and to install in any boiler house, in either new or when replacing existing units in any buildings, houses, hotels, schools, factories, or any other industry etc.

With low class leading NOx Class 6 levels for all these commercial wall hung boilers ensuring maximum BREEAM points, which is important for any UK business interest, and something to be expected from leading manufacturers at this date

Gas Commercial Boilers – Compare the Range & Benefits

• INNOVATIVE DESIGN, COMPACT, POWERFUL, & LIGHTWEIGHT – The devices have been developed and manufactured to be “space-saving”; thanks to their vertical structure they allow space savings in both new installs and to upgrade or replace older failed units or replacing an oil fired system boiler ( or even steam). Due to their light weight they are easy to carry , place and mount. Thus easy to install.
• Stainless Steel condensing boilers that optimizes the output according to real thermal needs of the installation and business, ensuring maximum efficiency with a working pressure of up to 3 Bar
• WIDE MODULATION OR TURN DOWN RATIO -wide modulation or turn-down ratio of 1:10 for the 50kW and 60kW and 1:20 for the 75kW, 100kW and 120kW units and up to an incredible 1:160 in cascaded configuration installation of 960 kW for example.
• STAINLESS STEEL HEAT EXCHANGERS -Each heat exchanger is made without welded joints and is 28mm diameter in size with a industry standard working pressure of 3 bar.
• ECOLOGIC PREMIX BURNER -The full range of commercial gas fired boilers is equipped with ecologic premix burners made of Fecralloy metal fibre.
• This range of condensing commercial boilers are suitable for use on sealed systems that fill from a mains water supply and open vented installations ( with a minimum of 0.3 Bar Head) and perfect for both new and retrofit installations.
• Standard spares consent – all leading brands i.e. Wilo pumps, Honeywell gas valves etc
• Suitable for radiators or under floor heating systems
• Domestic hot water can be generated via an indirect hot water cylinder, all controlled via the boiler or via heat interface units (heat interface units are very common in blocks of flats – with a communal commercial boiler in a plant room)
• These commercial boilers work in a similar way to domestic boilers – so proven reliability and performance.
• We also do a combination version, which is listed here on our website here-

Commercial combi boilers up to 100kW or a dedicated webpage for our most popular 50kW combi boiler that we supply.

Why choose our Commercial Natural Gas Boilers –

High efficiency and fuel savings at the right price solution for your business

Condensing Boiler Technology

Total flame modulation

Certified efficiency up to 109%

Cascaded sequence control and heat exchangers in rotation – a solution for industrial applications

Comfort

Quiet in operation

Easy installation and maintenance – in the rare occurrence of a breakdown – access to all essential system components

Reduced size and weight

Construction Quality

Modern, innovative and attractive design to keep your customers happy

large water ways the range benefit from a stainless steel heat exchanger, with industry leading dimensions

Turn down ratio up to 1:20

Ecology / Ecological

Fecralloy fibre premix burner

Reduced gas emissions in the atmosphere

Low CO and NOx levels – Class 6 -industry leading

Wall Hung Gas Boilers – for commercial applications or industrial

The 50kw to 120kW output commercial boilers. The R1K range of commercial boilers , which benefit from high efficiency with premix condensing technology. The technical details of these units are –

50 to 75kW Boiler models – commercial

50kW,60kW and 75kW Gas boilers technical information continued

 

100 & 120kW Boiler models  – commercial

100kW and 120kW gas boilers technical information continued

 

 

For the complete technical data on our boiler commercial range to suit your site services, be it Natural Gas or LPG , Please click on the following –

Download Flexiheat R1K Internal 50-120kw gas fired condensing commercial boiler manual

Boiler Control Options

All units can be controlled by an “OpenTherm” compatible controller ,with options for mobile phone control or we can supply a 0-10 Volt connection kit suitable for BMS connection, that is often required in commercial heating and plumbing applications or industrial premises.

Commercial boiler installations in cascade natural gas or LPG

This commercial gas boiler range can be used in a cascade configuration of up to 8 boilers , with the potential of 960 kW of heat output, making them the perfect boilers for Schools , Hospitals , Hotels, or any commercial or industrial site that requires heating via a hot water system. With a turn-down ratio of up to 1:160, these commercial boilers are the ideal boilers when you want to match your heating load, at the very best efficiency levels , giving you the lowest gas costs / gas usage for your commercial heating.

Easy to assemble pipe work kit for fast install on site for this commercial boiler range to make a floor standing commercial boiler set up.

Commercial Boilers for sale UK and Ireland

To ensure you get the correct commercial gas boiler in either natural gas or LPG, that is right for your water heating requirements, our sales team are here to provide information and advice to help you make an informed decision for your project requirements . With high operational reliability that you would expect from a leading brand that you as a customer can rely on, please call 01202 822221 to connect to our sales team or use our website contact form, to get the latest offers and price.