floor mounted commercial gas condensing boilers

Industrial Gas Boilers – Condensing-  23 kW to 1,600 kW in Single Boilers – up to 13,440 kW in – Floor Standing for Industry


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Industrial gas boilers floor standing with high efficiency, fuelled by either natural gas or LPG (propane) gas available from Flexiheat UK at a great price and with high quality

These industrial boilers / commercial boilers are the ideal boilers for any suitable commercial heating or industrial heating of buildings that require this level of heating output.

Whether you classify them as commercial boilers or industrial boilers is up to you. Officially commercial boilers, in relation to commercial gas boilers, the classification comes into effect at over 70kW of gas input to the boiler. From that figure on there is no real defined value for when commercial boilers are then classified as industrial boilers.

Gas condensing industrial boilers are the ideal boilers for larger buildings as a condensing boiler is the most efficient and cost-effective type of commercial or industrial boilers to use.

Industrial and commercial boilers work just like domestic boilers, just that they have a much larger output, making them suitable for industrial or commercial project requirements

With a large heat output range of up to 12,160 kW in a floor standing boilers cascade system, we have a full range of floor standing boilers for any commercial boiler installations, that you can rely on to provide an efficient condensing boiler installation for your site or project requirements.

Industrial Boilers – Commercial Product Specifications

Our Industrial gas boilers , which are condensing and can be either natural gas or LPG ( propane ) gas fired benefit from –

  • High efficiency pressure jet boiler range with efficiency up to 108.5% NCV  heat output – meaning higher than average energy savings
  • Ultra low Class 6 NOx combustion emission levels  – These low pollutant emissions meeting all current environmental commercial legislation
  • These floor standing boilers can be fuelled by either natural gas (G20) or Propane Gas (G31)
  • Maximum working pressure of 6 Bar
  • Maximum hot water temperature – 85 Degrees C
  • These industrial floor standing boilers have been designed for maximum versatility and energy efficiency for commercial premises
  • Homogeneous heat distribution with Premix condensing technology and micro-flame metal fibre coated steel burner
  • Whilst some manufacturers use a inox radial heat exchanger, we prefer an aluminium silicate alloy cast casing exchanger as it provides high operating efficiency with high heat transfer. All sub components are from leading brands on our commercial gas boilers
  • A wide option of capacity up to 23 kW- 848 kW in a single unit and up to 13,440 kW in a boiler cascade system / commercial boiler installations
  • Provides energy saving through 1:9 modulating operation of these commercial boilers
  • Allows cascade connection up to 16 commercial boilers in total , including 1 master and 15 slave boilers
  • Heat interface units – very common for heating blocks of flats with a communal commercial boiler plant room feeding the heat interface units.
  • Allows simple control with illuminated LCD panel which provides ease of use; and error codes and boiler information can be displayed on this panel
  • Daily and weekly operation schedule can be programmed
  • Seasonal heat program can be prepared during summer and winter times
  • Available as a natural gas boiler or a propane fired commercial gas boilers
  • Provides an advantage in boiler room planning and conversions with its compact structure in terms of area of required, due to their small foot print
  • Lightweight free standing construction and supplied fully assembled on wheels
  • With a maximum width of 640 mm , these floor standing commercial gas boilers are extremely compact and are able to fit through a standard doorway
  • Compliant with Eco design directive – ERP approved for industry

Commercial Gas Boiler Energy Efficiency – at different water temperatures and heat outputs– The FTC-X Range

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Technical data for our industrial gas boilers range – FTC-X Plus Series


Please note that these boilers have a NOx Emission Class 6 rating  as per EN 15502-1+A1

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Floor standing industrial & commercial Boilers diagram

floor standing commercial gas condensing boiler diagram


Industrial Condensing Boilers 

Below you can see a typical commercial floor standing commercial boiler schematic, in this solar heating is also used to help to heat the domestic hot water tank

Floor Standing Gas Condensing Boilers Installation Schematic, Floor Standing commercial boilers

Boiler Control Options

You can connect our industrial boilers – gas fired – to the web server controller from anywhere in the world to monitor and control your heating system, these web servers are manufactured by the Siemens brand, the leading manufacturer of boiler controllers.

Web Server controller for industrial gas boiler

Siemens Web Server Controller for Industrial Gas Boilers – Control your heating system remotely, from anywhere in the world

  • Remote access to your facility, and monitoring of the operating values
  • Changing operating modes (economy, comfort, anti-freeze protection and automatic operation modes)
  • Time program setting (Heating circuit, boiler, external time program)
  • Viewing information on heat generation and consumption
  • Adjustment of the systems hour, minute and year details
  • Changing temperature values of heating circuits
  • Language selection setting
  • Controlling the anti-legionella function in boiler circuit
  • Vacation mode setting for heating circuits (controlling the heating circuit as per the anti freeze protection mode in buildings for prolonged non-use)
  • Setting boiler operating temperature and changing the boiler’s operating mode (operation by 24 hours or time program)
  • Setting accumulation tank or hot water storage tank parameters
  • Controlling swimming pool circuit and changing temperature values,
  • Controlling cascade parameters
  • Viewing maintenance time and defining maintenance interval
  • Setting parameters of solar powered system,
  • Configuration settings (Relay and sensor assignment)
  • Monitoring system errors, viewing error times (Last 10 errors)
  • Resetting system to factory settings
  • Viewing status information of cascade system
  • Testing the relays connected to the system

Download Floor Standing Commercial Gas Condensing Boilers Manual

Industrial Gas Condensing Boilers for Larger Buildings for Sale UK & Ireland

Should you require anymore assistance, advice or information on our Industrial Gas Boilers / Industrial LPG Condensing Boilers / Industrial Gas Cascade Condensing Boilers for your project requirements, please don’t hesitate to get in touch with our sales team on 01202 822221 or use our email contact form above on the website. For our latest offers and news please follow us on Facebook or Twitter.