Commercial Hot Water Cylinders or Calorifiers

Commercial Hot Water Cylinders or Calorifiers

Commercial hot water cylinders or cylinder unvented or vented indirect water heaters 200 to 6000 Litres Flexiheat UK

Commercial domestic hot water cylinders or calorifiers from 200 to 6,000 Litres

Commercial hot water cylinders are designed to satisfy substantial or continuous domestic hot water demands such as hotels, care homes, schools, hospitals, camp sites, sports centres, leisure centres, residential or office blocks, when there’s a frequent requirement for large quantities of domestic hot water, in a short period of time, without any performance losses, when staff, residents or visitors create demand for warm water in commercial properties or commercial buildings.

Our commercial cylinders, tanks or commercial calorifiers as they are also known, provide a solution for large scale commercial domestic hot water capacity, with fast flow rates that satisfy even the toughest hot water production demand requirements.

This commercial cylinder range can be used as a vented (for vented applications we highly recommend the stainless-steel option – due to the fact air ingress is more prevalent in vented DHW heating systems – as stainless has the best longevity) or unvented cylinders (we just need to add a domestic hot water unvented kit to the unit)

Commercial cylinders for commercial water heating

Commercial cylinders come in various options and can use various technology, such as solar (renewable heat energy), electricity, heat pumps or warm water thermal systems (again a renewable heat energy source) to power the domestic hot water cylinder. The two leading hot water cylinder water heating solutions or commercial cylinder options are:

Indirect – indirect commercial cylinders / calorifiers

Indirect commercial cylinders showing the coil which is used to heat up the DHW via a boiler, heat pump or solar heating system which transfers the heat to the water heating system

Indirect commercial cylinders – Showing the internal hot water heating coil of our commercial hot water calorifier

These are a storage commercial hot water cylinder, that are often powered by a traditional heating boiler that supplies the system, via a coil (which can be a single or double coil indirect cylinders) or even a plate-to-plate heat exchanger for high warm water capacity solutions in commercial buildings or commercial process applications for a hot water system.

These commercial cylinders, tanks or vessels stored hot water capacity can be from 200 litres up to 6,000 litres in system capacity, (any cylinders under 200 litres of stored hot water we classify as domestic sizes – but there is no hard and fast rule on this) although bespoke designed models can be produced to support any specific requirements your commercial project may have.

Factors such as available installation space, may come into consideration and it is possible to link up several smaller commercial hot water calorifiers or buffer vessels to meet the required storage capacity for commercial buildings.

Our indirect commercial hot water cylinder range can be fitted with an electrical immersion heater or heaters, as a back up to your primary heating energy source such as a boiler, thus direct heating of the water in the commercial cylinder.

Direct – Direct commercial cylinders or Calorifiers

A direct commercial hot water cylinder is a unit that uses a heat or energy source that is physically located within the cylinder, normally this is an electric immersion heater or multiple immersion heaters, to warm the water – thus the term “direct water cylinder”. Normally the require three phase electric power rather than single phase supply service, as any immersion heater over 3kW requires a three-phase power supply. The immersion heaters have a control thermostat, that allows you to set your desired temperature.

Often used in commercial properties or a commercial project where there is no access to gas or oil, or more commonly with businesses or individuals who are using a renewable electric supply or buying electric that is produced by certified renewable sources – enabling them to have a carbon neutral domestic hot water system.

We have a dedicated webpage on our direct commercial cylinders, which are stainless steel cylinders on our website here –

Commercial Direct Electric Water Heaters

Materials of construction of hot water commercial cylinders

There are two main options for the construction of the vessels themselves – being

 

Vitreous enamelled coated mild steel vessels

Vitreous enamel protects the mild steel from corrosion. Due to its ability to interact molecularly with the mild steel surface of the tank, it can store domestic hot water at the highest temperature of 95 ºC  without breaking down or coming off from the steel surface of the tank. All internal linings in domestic hot water commercial cylinders must, by law, be “food grade” (EC Regulation 1935/2004). Our vitreous enamel has food grade certification at the specified test temperature according to current regulations at 120ºC, which guarantees its maximum quality at extreme working temperatures, and is suitable and approved for potable water use.

Ultimately vitreous enamelling is a food-grade, impermeable coating with a porcelain appearance that protects the storage tank’s metal surface when it comes into contact with the stored hot water.

The range has evolved to the point that enamelled lined commercial cylinders now have the same working pressure of 8 Bar for the domestic hot water or even 10 Bar pressure (at special request) as their suitable stainless steel equivalents, but at reduced costs.

The other benefits are that they are more cost effective than a stainless steel vessels / stainless steel cylinders or buffer vessels range. The warranty period on these commercial hot water calorifiers is 5 years.

high performance indirect hot water heaters calorifiers 200 to 1000 Litres

high performance indirect domestic hot water calorifiers / cylinders 200 to 1,000 Litres

Technical details of the domestic hot water heaters

High performance hot water calorifiers or water heaters cylinder that come with a warranty details - Flexiheat UK

200 – 1000 Litre Calorifiers – The HLB option have a 400mm inspection and clean out manhole on the 800 litre and 1,000 Litre hot water storage models

 

commercial cylinders water heating performance from Flexiheat UK trading in England UK

Based on a primary inlet heating temperature of 85C

 

Continuous hot water flow rates at various input temperatures for 10C to 45C

The cylinder hot water performance is directly related to the coil primary input temperature and the water flow rate to the coil as per the below data table.

Most of our commercial cylinders can handle more than 6M3/hour of flow, but please check with us as the pressure drop through the coil increases to the point that it may be impractical for real world use.

Most air source heat pumps can only produce a flow temperature of 55C or so, thus we produce figures for heating water from 10C to 45C.These lower temperature air source heat pumps, will require an immersion heater installed to be able to boost the DHW temperature to 60C for anti-legionella purposes.

 

Warm water production flow rates from 10C to 45C for our commercial cylinders or buffer vessels

 

Continuous hot water flow rates at various input temperatures from 10C to 60C

With the development of high temperature air source heat pumps, which are increasingly used on commercial buildings, these air source heat pumps can produce flow temperatures of 70 °C or so; thus, our commercial cylinders can heat water for 10 °C to 60 °C without the need for an immersion heater.

Warm water production flow rates from 10C to 60C for our commercial cylinders or buffer vessels

 

Cathodic protection should be installed in all DHW tanks composed of carbon steel with an inner lining to DIN 4753. A cathodic protection system consisting of sacrificial magnesium anodes and an anode charge metre is included as standard with this commercial cylinders range.

Cathodic protection systems with sacrificial anodes must be monitored for wear on a regular basis and replaced, if necessary. You can upgrade to the special electrically powered titanium anodes that emit the necessary current for protection of the tank lining which means that, unlike sacrificial anodes, there is no wear and the anodes do not need to be replaced.

Industrial Hot Water cylinders – from 1,500 to 6,000 Litres 

Details on the 1,500 litre to 6,000 Litre Industrial hot water cylinders / Water heaters

Industrial hot water cylinders water heaters from Flexiheat UK

Industrial hot water cylinders water heaters from Flexiheat UK – 1,500 Litres to 6,000 Litres

 

Technical details

Industrial hot water cylinders technical data from 1500 to 6000 Litres - Flexiheat UK

Download the Domestic hot water cylinders and storage vitreous enamelled (Glass lined) units brochure from Flexiheat UK

We do a full range of commercial gas boilers to power this commercial indirect cylinders range – these are detailed here – Commercial gas boilers – floor standing, or wall hung.

Stainless steel cylinders

Stainless steel cylinders – This material has become popular over the years, as stainless steel has a much higher resistance to all forms of corrosion, including stress and crevice, making it highly durable and promising a longer working lifespan of the commercial cylinder.

Stainless Steel also can withstand extremely high pressure, which has paved the way for the unvented hot water cylinders that we see today. Unvented commercial cylinders have grown in demand due to their delivery of mains pressure hot water services.

These two factors have made this high-quality material the perfect solution for pressurised domestic water heating services.

Stainless steel commercial indirect hot water calorifiers from Flexiheat UK

Stainless steel commercial hot water cylinder range from 200 to 1000 Litres.

 

DHW Performance data for the above stainless steel range.

For 10C to 60C temperature rise DHW heating 

GX200-HL to GX1000-HLB commercial indirect water heater 10C to 60C technical table Flexiheat UK

10C to 60C Hot water production performance tables

 

and for 10C to 45C temperature rise DHW heating

GX-200-HL to GX-1000-HLB commercial indirect water heater 10C to 45C technical table Flexiheat UK

10C to 45C Hot water production performance tables

 

For full output data on our  stainless steel commercial cylinders – please see pages 30 & 31 of the following brochure –

Download the Stainless Steel cylinders for domestic hot water production and storage brochure – Flexiheat UK

 

We also do a range of stainless steel buffer vessels too- Buffer vessels are used to store hot water either hot water for heating or how water for domestic hot water use -these are detailed on our dedicated buffer vessel webpage – look for the stainless steel options

Commercial unvented hot water cylinders

A commercial unvented cylinder provides mains pressure water directly from the cold-water mains. The cold water is directly drawn from the mains water supply, then heated by the relevant heat source that you supply to the coil of the commercial cylinders.Instead of a cold water feed tank, an unvented hot water system uses a sealed (unvented) hot water cylinder that receives its pressure directly from the cold water mains.

Thus, an expansion vessel is required to manage the changes in pressure within the system as the water heats up in a commercial unvented domestic hot water system. Additionally, the system needs to have a temperature and pressure safety valve installed.

When using electric as your fuel to power the water cylinder they are referred to as – direct commercial cylinders unvented.

Or when powered by boilers which can be either gas or oil boilers, or even heat pumps these days for reduced running costs – they are referred to as an indirect commercial cylinders unvented.

Benefits of an unvented hot water system for commercial premises

• Maintain strong pressure thanks to direct mains supply – in that direct mains supply can have a pressure up to 10 Bar

• No cold-water feed and expansion tank (also referred to as the header tank) at high level – that would give the system pressure, is required

• Thus, an unvented cylinder doesn’t rely on gravity fill and be fitted in any location

• Enhanced hygiene quality and safety – a sealed system not only eliminates the risk of leaks or freezing of the header tank in colder conditions, also contamination of the tank is also removed.

Fast recovery commercial hot water cylinder?

We often get asked what are the fastest recovering commercial cylinders – and the answer is – This commercial cylinder range is -which are ideal for commercial properties or premises with high demands.

Commercial calorifiers

We have some of the best commercial hot water cylinder’s on the market, all designed to the highest quality standards, and with all the relevant safety features. All of our commercial cylinders are approved to the PED (Pressure Equipment Directive) and the approved Energy Related Products (ERP) Directive 2009/125/CE, where applicable.

Should you interest and require any more support, free design or selection advice or costs/ get a quote on our commercial hot water cylinder range then please use the contact us form page on the website, or feel free to give our technical sales team a call on 01202 822221.

Commercial Boilers

Commercial Boilers

commercial boilers wall hung for heating Flexiheat UK

Gas condensing boilers for commercial boiler installations

Commercial boilers are manufactured to fulfil the special needs of commercial premises or businesses or for heating apartment buildings with heat interface units, via a local heating network. Commercial boilers work similarly to domestic boilers, but they generate a larger heat output, making them suitable for commercial boiler installations.

Whether you are a professional heating engineer or a business owner looking to upgrade your boiler, this introduction about boilers with high energy-efficiency for commercial or even industrial heating will show you your options.

Our commercial boiler range has been designed and developed to meet a wide range of applications and project requirements from heating commercial stores, factories, schools, hotels, pubs, and leisure industry – just to name a few commercial heating applications with condensing technology to achieve the energy savings.

Commercial boiler systems

They are ideal boilers or perfect solution for producing domestic hot water as well as doing the heating system in a commercial property. This is achieved by using a boiler or even boilers in conjunction with suitable indirect hot water heaters or heat interface units. Making them a system boiler in this case.

Wall hung boilers

commercial gas boilers that are wall hung condensing devices from Flexiheat UK

Gas boilers – wall hung boilers with condensing technology for commercial heating

Wall hung gas condensing boilers are the most popular units these days for commercial buildings – especially in reference to commercial gas boilers, as they are the ideal boilers to fit in relatively small boiler houses and are easy to cascade to suit any project.

 

Commercial gas boilers in cascade offer higher modulation ratios, and when you bear in mind that commercial boilers spend 70% of their time at 30% of heat output, and the other 30% of their time at full output range, commercial gas boilers that have a high modulation ratio support these demand cycles.

The result is longer run times with lower cycle rates as the boiler controller operates the required number of commercial boilers or boiler to meet the heating demand of the system, which also reduces the wear and tear on boiler installation as continually cycling on and off can result in early failure of gas valves, fans and pumps fitted to the boiler or heating system.

We supply a full range of high efficiency commercial gas boilers, with modulation figures for single piece boilers of 1:20 and when used in cascade, with a maximum kW output of 960kW, so we can cover or fill any industrial or industry heating requirement as well as commercial applications.

Commercial floor standing boilers are still a very popular installation in the UK, floor mounted boilers are available as gas fired either natural gas or as an LPG condensing boiler , electric or oil fired condensing boiler ranges with some very large outputs.

Commercial floor standing boilers

Commercial floor standing boilers or free standing boilers are still a very popular installation in the UK for commercial applications, floor standing boilers are available as gas fired either natural gas or LPG, electric or oil-fired ranges with some very large outputs. There are various subject options –

Gas-fired floor mounted boiler range

industrial gas boilers for heating Flexiheat UK

Gas condensing commercial and industrial range – stainless steel heat exchangers

Our gas fired floor mounted commercial gas boiler range is detailed more on the following webpages – Commercial gas boilers – floor standing, or wall hung up to 960kW of output power or our commercial and industrial gas fired floor mounted boilers – which you can install up to 12,160 kW of heating power – which is a large amount of heat ! and enough to cover any installation requirements from one of the leading brands of gas condensing boilers for industry or commercial applications.

Oil fired floor standing commercial / industrial heating boilers

commercial and industrial floor standing condensing oil boiler also available as a dual fuel commercial boiler - oil and gas

Also available as a dual fuel commercial boiler – oil and gas fired

Commercial oil fired boilers, that are floor standing start at 70kW and go all the way up to 1,550 kW in condensing oil fired boilers – the UK and European legislation states that all boilers from 70kW to 400kW must be condensing to meet the Energy Related Products Directive requirements for heating systems for commercial premises. See this webpage for more information on our commercial floor mounted oil boiler range.

But it would be foolish not to use condensing technology above the stipulated 400kW, as condensing condensing technology is 20% more efficient than a non-condensing boiler, and benefit from low emissions. Again, they can produce domestic hot water through our commercial hot water indirect cylinders or heat interface units.

Frequently asked questions

Here’s some frequent questions we get

What are commercial boilers?

Commercial boilers are widely used to heat structures such as offices, schools, blocks of flats, and local surgeries or hospitals etc. They typically create hot water using either gas, electricity, or oil as a fuel source. This heated water is used to power the heat emitters in the building, such as underfloor heating, radiators, or fan coil units.

What size is a commercial boiler?

Gas and oil-fired commercial boiler range in size from 70kW to 2,000 kW plus. This wide range of output capacities helps to guarantee that businesses may select products that fit their individual heating and hot water requirements.

Commercial boiler prices UK

If you require any further support, advice, latest offers of our commercial boilers range, be they floor standing or wall hung models then, please contact us via our email contact form above on the website or call our business sales services team direct on 01202 822221 and deal with your commercial project interest. Sign up and follow us on Facebook and twitter for our latest news.

Calorifiers

Calorifiers – domestic hot water systemsCalorifiers or water heaters from Flexiheat UK

What are calorifiers?

Calorifiers are indirect-fired water heaters used in a heating and hot water system to provide domestic hot water. The term “indirect fired” refers to a water heater that does not have its own burner. It is a water storage cylinder with one or more heat exchanger coils containing hot liquids , normally water but can also be a solar fluid , or can be a tank in tank design of indirect hot water heaters.

The calorifier tank is designed to be connected to an external heat source, such as a gas boiler, an oil boiler, or a renewable energy system such as a heat pump, wood or pellet boiler, or an electric boiler.

The term calorifiers is used in the heating industry, and this is the area we are referring to. The term calorifiers is also used in the marine industry – a marine calorifier is a completely different to heating calorifiers as they are fed by engine coolant, that use drop coil technology.

External heat source

Generally, in the past calorifiers have been powered by a boiler heating water up to a temperature of normally 80C – this hot water is classified as the primary hot water which feeds a single coil normally fitted in lower half space or multiple coils (twin coil), within the water heaters tank.

Hot water calorifier showing the internal coil Flexiheat UK

Single coil shown inside the water heaters

The heat exchanger coils of the calorifier work by heating up the cold water in hot water cylinder to the required demand

The cold water contained in the water heater is then heated up to 60C to prevent the formation of legionella in the domestic hot water systems – this is known as the domestic hot water (commonly abbreviated to DHW)

Please note – You will require a calorifier with stainless coils if you have a central heating system with an aluminium heat exchanger or if there is any aluminium in the system. Galvanic corrosion, particularly the interaction of two dissimilar metals in water, will cause the calorifiers early demise.

For calorifier sizing, please see our webpage – commercial calorifier sizing

Click here – For our 80 to 500 litre indirect stainless steel calorifier range

Or for our 200 litre to 6,000 Litre commercial indirect hot water heaters  –  click here for our Commercial hot water cylinders

or click here for our twin coil cylinders range

and here for our tank in tank water heaters – which are high recovery water heaters

Electric heater backup or top up

Calorifiers can also have a backup or top up system for heating water, in the form of an immersion heater.

The immersion heater is powered by electricity, and in the case of heating boiler failure or when heat pumps can’t heat the water heaters to the desired temperature (normally the maximum is 55C that a heat pump can produce – remember we require at least 60C) then they, by efficient means (electric has 100% efficiency) , either replaces the function of the heating coil to heat the potable hot water directly or additionally to the heat generated by the coil in the case of heat pump’s, tops up the hot water heating demand.

Hot Water

Commercial buildings, leisure industry, sports facilities and public buildings domestic hot water systems are fed by water heater calorifiers normally on a DHW secondary return system to ensure the hot water system is heated and maintained above the temperature required to prevent the risk of legionella’s disease.

This guarantees that hot water is always accessible at any of the taps, regardless of their proximity to the calorifiers.

Hot water cylinder temperature control

All calorifiers require a thermostat to control the operation of the heat source supplying the water heater.

Domestic hot water calorifier

If you require any further assistance, latest offers / cost of our calorifiers range, which are indirect hot water cylinders for heating and hot water , please contact us via our email contact form /page above or call our sales team direct on 01202 822221.

15kW Electric boiler / Electric Boilers

15kw electric boiler ;15kw electric system boiler; electric heating ; home heating

15kW Electric Boiler for a wet central heating system – radiators or underfloor heating.

15kw electric system boiler

Our 15kW electric boiler is our most popular electric boiler, for central heating and hot water system replacement for a gas boiler or oil boiler, as customers look to reduce their carbon footprint / carbon emissions. They can be used for underfloor heating or traditional radiator central heating, or even a combination of both.

These are electric system boilers, so have a pump, pressure relief valve and expansion vessel fitted internally, and these eliminate unnecessary external plumbing and pipework and have a 100% electric energy efficiency.

They can also be used to produce domestic hot water, when used in conjunction with an indirect hot water cylinder, especially if the property has a bath, as you will need an element of domestic hot water storage, as an electric combi boiler will not be able to cope with the demand.

Central heating with green electricity

With gas boilers being phased out in the UK to reduce our reliance on fossil fuels and reduce carbon emissions, electric boilers when powered by carbon neutral or renewable energy sources are just one of the solutions to reducing global warming and help replace gas boilers.

Largest electric boiler on single phase supply?

A 15kw electric boiler is the largest electric boiler you can run off a single phase supply that is commonly connected to properties with a 100 Amp electric supply that we have in the UK.

Thus, at maximum output these 15kw electric boilers can consume 72 Amps – when wired to a single phase / 240-volt supply

Should you put a kettle, a toaster, tumble drier, or hair dryer on, which all can consume 13 Amps each of your single phase / 240 Volt electricity supply – then you can get very close to maximum amps available or even blow you main board fuse.

With the following unique product – Our maximum current Watcher – which essentially, temporarily reduces the boilers output, and thus the amps drawn, should the boiler get close to your maximum amps – all automatically – when the amps drop, the boiler automatically goes back to the power required.

The” maximum current watcher” – it is basically a releasing relay (restriction of current). The relay monitors and controls the electric voltage in the whole house or flat and in the case of exceeding the permitted values of the electric current it reduces the input power to the electric boiler. All of this is done automatically, without any human intervention needed. This system will not only operate on our 240 volt / 1 Phase Electric boilers, but also our 400 Volt / 3 phase units as well. This now means that you can use our 15kW electric boiler model, in a property or flat with standard 240-volt, single phase with no worries or problems that the boiler will trip out the main electric board.

Electric Boilers

Electric boilers work without emitting any fumes or waste gases that you get with a gas boiler, which reduces your carbon footprint, eliminates the possibility of a carbon monoxide leak, and allows for flexible installation because a flue system is not required . Electric boilers are almost completely silent when running too thanks to the silent triac power switches. We supply a full range of outputs up to 45kW, so if you require another size, please see our webpage – electric heating boilers 

Wall mounted heating boiler

Advantages at a glance:

Energy saving circulating pump

High efficiency erp smart pumps are used in our 15kw electric boilers, with stainless steel impellers.

Pump protection against clogging

Regular spinning of the pump (once every 24 hours) prevents potential clogging of the pump during an extended electric boiler off period

Very quiet operation

Thanks to the silent triac power switches in this electric heating boiler – they are completely silent.

• Smart electronic modulating system with step less regulation in low power steps or jumps of 2.5 kW each – the modulating electronic control of this wall mounted heating boiler, will ramp up and down the power steps or levels , to suit the central heating system requirements – be it underfloor heating or radiators – this auto heating regulation mode or process ensures reduced energy consumption, as the electric boiler matches the heating output to the demand of the hot water radiators or under floor heating, and result in lower energy bills / running costs.

• Automatic modulating electric boilers (sem system)  – the minimum power of the electric boiler is 2.5 kW, then the boiler modulates up and down the output range in 2.5kW steps .You also have the capabilities of setting the boiler at a maximum kW output i.e., to either 2.5, 5, 7.5, 10, 12.5 or 15kW, and the boiler will ramp up and down depending on the heating system demand to the maximum set value.

• Comes with a wall bracket steel template for wall mounting these electric heating boilers.

Download the Flexiheat Electric Boiler Range Brochure

Thermostats

• Possibility of connecting a controller with “OpenTherm +” communication – these are your “Nest” or “Siri” type of thermostats, that can be wireless or internet thermostats- that you can control from an app on your phone, iPad or computer. Allowing you to control your central heating system.

apple ios virtual; experience dsr solaris; boilers comet electric; experience launch android; launch android virtual; android virtual experience; ios virtual experience; virtual experience dsr; virtual experience launch; mattira electric

Or you can use traditional ambient thermostats,

• Possibility of regulation according to the room or outside temperature

• Possibility of remote control of the electric boiler using an SMS message in conjunction with an SMS module (optional extra)

• Digital control panel with a clear, two-digit LED digital display

• Safety switch protection with heating flow detector

• We use copper elements – not stainless steel shielded elements – as copper has a shorter heat up period, and thus is a better product in this application.

• HDO communication – remote switching of the operation to a low rate by the electricity supplier- very handy if you’re on an economy 7 type of cheaper tariff scheme – saving costs on running your

• Internal heating expansion vessel

• Possibility to control the outlet temperature of the electric boilers by means of a 0 – 10 Volt electric signal

• Possibility of producing hot water in an external storage tank after installing a three-way valve which is controlled by the electric boiler.

• Top design – with all the components to operate a wet central heating system be it underfloor heating systems or radiators, with all pipework connections easily accessed at the bottom of the boiler, for ease of installation. The auto air vent is located at the top of the boiler, to ensure it gets the air removed from these electric boilers and an easy to use digital display inbuilt to the unit.

• Smaller external dimensions of the packaged boiler, with lower water content

• Integrated refill (regulated by hydro block) integrated frost protection

• Small dimensions – you have more location’s to fit you electric heating boiler, with a time saver install, with no additional external plumbing and pipe work are required , as these are sealed system boilers.

• Auto air vent – to remove any air from the electric boilers heat up chamber, and to prevent any damage to the immersion heater / heaters.

• Two year warranty for our insulated steel manufactured boilers.

• No noxious fumes or gases when you use electric central heating boilers.

Electric combi boiler

They simply don’t work at this size , you need a three phase supply for these boilers to give a usable hot water flow rate. See our dedicated webpage on electric combination boilers for more info.

Hot water indirect cylinder heating

domestic hot water heating with an electric boiler;

1. The electric boilers have an automatic system in them that operates both the heating and the indirect DHW cylinder

2. It operates in switching mode

3. Domestic Hot Water always has priority

4. For heating it works at the “heating” temperature – lower temperature (25C to .80°C), can be set and controlled – and you can use weather compensated control –

Compensated weather control- the boiler automatically drops the flow temperature relative to the weather conditions – for example on a day when the temperature is 12C outside – and you want 20C inside, the boiler works out that you only require 50C to the radiators, and this saves you energy and thus running costs.

The boiler then automatically switches on the pump and immersion heater heating elements and regulates to the desired temperature for the heating system.

5. For the DHW cylinder, the electrical boiler heats up to a higher temperature (usually 75-80°C, to heat the DHW indirect stainless steel cylinder as quickly as possible)  – the automatic control closes the heating circuit and opens the DHW storage heater heating circuit, switches on the pump and heating elements and heats to a higher temperature (75-80°C) and heats the DHW cylinder very quickly (100 litres in approx. 10 – 20 minutes! Based on a 15kW )

6. After the DHW Cylinder is heated, it switches to heating (see “4.”)

Why is this indirect set up important?

Because you can have two required temperatures – i.e., the heating side of the boiler, may be running underfloor heating – which needs a maximum temperature of 45C, or if the boiler is compensating the flow temperatures to a radiator system, for example – it may have reduced the flow temperature to 50 or 60C – This would not be a high enough temperature to heat the indirect hot water cylinder

And this is the problem with the old “S” and “Y” plan control system, that use 2 x 2 port valves – one for the heating and one for the DHW indirect water cylinder. You can only have one temperature coming out of the electric boiler – which may well be not high enough to supply the domestic hot water cylinder.

Electric central heating boilers

So call us at Flexiheat UK as we are the electric boiler specialists for the United Kingdom , our helpful friendly and professional sales team are ready to deal with your enquiry, get a price or order please contact our sales team on 01202 822221 or click above on our website for our email contact form.

60kW Boiler

60kW Boiler – Gas fired condensing boiler

60kw boiler;60kw system boiler;60kw heat only boiler;60kw regular boiler

Our 60kw boiler is a hot water boiler for central heating and will also produce domestic hot water via an indirect cylinder for larger properties or light commercial applications. They are a regular boiler, which are normally wall hung / mounted or can be installed on an optional frame floor standing kit if space is at a premium, when considering your new high efficiency boiler.

With ERP high efficiencies of 97% full load efficiency and 108% at part load efficiency, this is an “A” rating energy efficient boiler, they are ideal boilers- with a lightweight design and compact footprint for this product range, and low class 6 NOx emissions.

They are available in natural gas models or LPG gas models, and have a 28mm diameter stainless steel heat exchanger – which guarantees lower blocking risk, higher thermal efficiency, and easier cleaning of this commercial boiler.

Condensing boiler – 60 kW

These boilers make use of a method known as condensing, in which the boiler extracts the energy that has been accumulated in the hot exhaust gases before discharging them into the external environment. Because of this, its operating efficiency rating is significantly increased, and it also achieves a greater fuel economy, which results in running costs saving, which you would expect when installing a new boiler.

A gas condensing boiler is the best boiler, as they’re the most reliable and efficient for heavy domestic or light commercial heating applications. Our wall hung boiler features as standard, a reliable high efficiency pump integrated within this commercial boiler. This reduces installation labour time and cost.

Commercial boiler or large home heating boiler?

At this boiler output, this boiler may be referred to as a commercial boiler. Some people say anything over a 50kW boiler is one. Any qualified domestic gas engineer, who is gas safe registered can install a natural gas-fired condensing boiler up to 70kW of input. So, is it a light commercial boiler or a large domestic boiler – it’s in the eye of the beholder as they say?

60kW System boiler or 60kW Regular boiler

These are 60kW regular boilers, also known as conventional boilers or heat only boilers, these maintain the pressure in the heating system with the assistance of a header tank, also known as a feed (sometimes called a cold water storage cistern) and expansion tank, which is often located in the attic. On the other hand, system boilers make use of a pressurised heating circuit that is fed by water drawn from the mains. System boilers are more common these days as they are sealed heating systems.

You can make our unit into a 60kW system boiler by adding an expansion vessel to the heating system, unfortunately at this size of boiler we don’t have the space within the casing for installation of the expansion vessel.

System boiler fitted with an external expansion vessel; ideal evomax ;boiler repair

Stainless steel combustion chamber

Product details and features – careful component selection – for high reliability this product features a stainless steel heat exchanger in our commercial boiler, as it’s the most suitable providing long product life as they provide a higher level of resistance to oxidation and corrosion, whilst light enough in weight at the output rating of 60 kW to be wall mounted / wall hung. Most high quality popular brands also use stainless steel heat exchangers now for reliability, but a few still using an inferior aluminium heat exchanger in their wall hung new boiler. We offer a 5 years warranty on our heat exchanger on this commercial boiler.

60 kw boiler;60kw system boiler; gas boiler 60kw; ideal evomax

Stainless steel heat exchanger – lots of space for servicing or boiler repair should it ever be needed

Home heating

When used in larger properties or homes, with normally 20 plus radiators and with multiple bathrooms, a suitable indirect hot water cylinder must be used. We do a full range of these, with sizing details depending the domestic hot water demands – see more on our dedicated webpage – indirect unvented cylinders – for more information on this product range.

Central heating system

This regular boiler can heat a big residential home or commercial facility with the same level of effectiveness. With a high modulation or turndown ratio of 10:1, which ensures great heat load matching to the heating system requirements, you real are getting the best boiler on the UK and Irish markets.

This boiler can be used on an underfloor heating system installation or a traditional radiator heating system installation, and we have cascade boiler installations options, should you want to use this commercial boiler in multiples with pipe header kits, floor standing frame kit etc ,with a cascade control option.

Download the R1K 60 – 60kW gas fired condensing boiler manual from Flexiheat UK

Control and thermostat options for our boilers

The unit has an inbuilt control panel which is a large backlit display, with simple controls which are easy to use.

A weather sensor is included as standard for optional weather compensation. It controls the boiler’s output based on the weather outside conditions to make sure it uses the least amount of energy and reduces running costs. This is referred to as weather optimization and compensation.

This unit is also “OpenTherm” compatible which means you can use Nest or Hive controllers to control your boiler from a phone App. Or we do an updated controls option called cloud warm.

Opentherm controller Wi-Fi app controlled from Flexiheat UK

Cloud Warm – Wireless Wi-Fi controller – can be app controlled via a phone, iPad or computer.

Natural gas boiler or LPG gas

Our wall hung boilers can be supplied in either natural gas or propane gas (commonly known as LPG), we can also supply a conversion gas install kit should you wish to change from natural gas to LPG, or vice versa. Whatever gas you use, your getting a reliable high efficiency boiler, with great load efficiency – with a certified  “A” rated ErP energy efficiency rating.

Delivery or Collection

You can purchase your new boiler direct with us, to get the best deal. We can deliver on a small half pallet service – the delivery date might be variable depending on your postcode. For example, a Scottish Highlands, or West Wales postcode can take 2/3 working days – while a “middle England” postcode may only take one working day. Alternatively, you can collect from our local branch at Wimborne, Dorset, England – postcode – BH21 6SZ

60kW Gas Boiler

Should you require any more information or a cost on our 60kW gas fired boiler on the UK and Irish markets, please contact our sales team on 01202 822221 or click here for our email contact form. All of sales are supplied with an inc vat invoice.

9kW Electric Boiler -System boiler with high modulation

 9kw Electric Boiler

9kw electric boiler for wet central heating water heating;low carbon green energy electric heating

A 9kw electric boiler works just like a gas boiler, just that it’s powered by electricity rather than gas. They benefit from easier installation, as no requirements for flue offers flexible installation location – you can decide where to locate your electric boiler to suit your needs or your customer requirements, unlike a gas system which can be dictated by the flue system requirements of gas or oil boilers.They do both a wet central heating system, either a underfloor heating or radiator central heating and domestic hot water purposes via an indirect hot water cylinder.

Electric heating can be carbon neutral if you supply the boiler with electricity produced by carbon neutral sources.

Our electric boilers ensure maximum efficiency, as they have a great modulation range of 1kW power steps, meaning our electric boilers will ramp up and down their power output range in small 1kW power jumps i.e. stage heating.

With no annual gas safety certificate required for electric boilers resulting in lower maintenance costs, and the ideal choice to installed in customers property for either a retrofit or new installation.

Wet central heating with an electric boiler

These 9kW electric boilers, which provide wet central heating come complete with an integrated “ERP” energy efficient compliant heating pump and an integrated 7 litre expansion vessel, making these electric boilers what is commonly known as a “sealed system boiler” or sealed systems and eliminate unnecessary external plumbing for an expansion vessel and pump.

High efficiency electric compact or small boiler from Flexiheat UK – 9kw hot water output; electric flow boiler with only a cold water supply needed

A compact and small electric boiler – energy efficient home heating electric solution from Flexiheat UK

This means this electric boiler can not only do the heating system, be it an underfloor heating or radiator heating system, but can also heat an indirect cylinder for your domestic hot water requirements if so required.

This allows you to have a “sealed heating system,” meaning that no feed and expansion water tank (i.e., open vented systems) is required in the loft — which can be prone to freezing or bursting, you don’t get this potential problem with sealed systems. It also makes installation much easier and more compact in the property because all the necessary parts are inside the electric boiler casing, such as the factory fitted circulating pump and expansion vessel.

Electric boilers

  • Factory fitted circulating pump – Energy saving Wilo ErP compliant pump – quality products
  • Heated water temperature output range of up to 80 Degrees C operating temperature
  • Power surges are avoided with soft start and zero volt switching.
  • 9 stage heating – this electric boiler 9kw output will ramp up and down to the heating demands in small 1Kw steps or stages – closely matching the requirements of the system and thus reducing electricity consumption
  • Electric system boiler outputs all the way from 1kW to 9kW for a wet central heating system, i.e. underfloor heating or standard radiators and domestic hot water purposes via an indirect cylinder
  • No moving parts for long life soft start operation
  • This electric boiler is virtually silent in operation.
  • Fitted with an auto air vent to eliminate air from the heating system
  • Space saving unit – this electric boiler is small in size but will deliver a lot of heat – will fit in a standard domestic airing cupboard
  • No Requirement for annual safety certificate for landlords and no fuel tanks required -reducing maintenance costs
  • Can be controlled via the nice touch screen panel – with operation front control panel indication of temperature, times etc
  • The boiler can be installed for heating only, or for heating and domestic hot water production, via an indirect hot water storage cylinder
  • Can be used with standard radiators or underfloor heating systems – efficient wet central heating
  • This boiler can use a standard room thermostat ( which must be volt free) , or a “Opentherm” suitable/ compatible room thermostat such as your Hive or Nest type of thermostats, which can allow you to control the electric boiler status via an phone app, iPad or computer and reduce electricity consumption and running costs with weather optimization and compensation that Opentherm intelligent controllers do.
  • Constructed with top brand quality engineered products from the leading manufacturers which ensures long life of the electric boiler
  • No flue system is required for an electric boiler – a nice convenience to have, as it cuts down installation time for the installer and costs for the customer – flexible installation location – annual safety certificate
  • Has the ability for automatic switching to off peak tariffs
  • Product code – FHEL9 – Single phase electric system boiler ( can all be run on a 3 phase supply to)

Energy efficient wet central heating system

To ensure maximum efficiency from our unit, our 9kW electric boiler incorporates nine-stage heating modulation, with small increments of 1kW power steps. This unique benefit will modulate the boiler to reduce electricity consumption and running costs, via better heat load matching of the central heating system as the thermostatic radiator valves open and close or in the case of underfloor heating systems control.

FHEL9 Electrical boiler technical details from Flexiheat UK; potterton gold electric boilers

These boilers can be wired either by a 3 Phase 400 Volt electric or 1 Phase 240 Volt electric mains electrical connection- we have highlighted the single phase boiler electrical details in the above data – as it’s the most common electric supply to this boiler size.

 

The full brochure for our range of units available can be downloaded here –

Flexiheat Brochure For Electric Boiler Range 

Energy efficient domestic hot water heating via a hot water cylinder

Delivery or production of domestic hot water is achieved via pressurised or open vented indirect cylinder, for fast filling baths and to supply multiple tap outlets with hot water supply at the same time – schematically like so

domestic hot water heating with an electric boiler; Potterton gold electric boilers; bathroom showroom; vat add delivery; Potterton gold indirect cylinder

The boilers have an automatic system within that operates both the heating and the indirect DHW cylinder

It operates in a switching mode and Domestic Hot Water always has priority

Lower temperatures ( from 25C to 80°C ), can be set and controlled for the heating circuit– and you can use Equithermal control – as our unit is “Opentherm” compatible with various controllers or via our operation front panel indication.

Equithermal control is compensated weather control- the boiler automatically drops the flow temperature relative to the weather conditions – for example on a day when the temperature is 12C outside – and you want 20C inside, the boiler works out that you only require 50C water temperature output to the radiators, and this saves you energy and thus running costs. – more on this in this video

Why is this set up important?

Because you can have two required temperatures – i.e., the heating side of the boiler, may be running underfloor heating – which needs a maximum temperature of 45C, or if the boiler is compensating the flow temperatures to a radiator system, for example – it may have reduced the flow temperature to 50 or 60C – This would not be a high enough temperature to heat the indirect hot water cylinder

For the DHW cylinder, the electric boiler heats up to a higher temperature (usually 75-80°C, to heat the DHW cylinder as quickly as possible) -the automatic control closes the heating circuit and opens the DHW heating circuit, switches on the pump and heating elements and heats to a higher temperature (75-80°C) which heats the DHW cylinder very quickly (100 litres in approx. 10 – 20 minutes! Based on a 15kW)

If you use an unvented mains cold water supply hot water storage cylinder, then you can have a powerful hot water supply delivering mains pressure showering hot water and fast filling baths.

Note – If you require a 9kW electric combi boiler or combination boiler, look at our solution – as a true 9kW electric combi won’t work correctly to produce an adequate flow rate based on the water temperatures we get in the UK and Ireland especially in the winter period – the flow rates as just pathetic and unusable – look our solution here – electric combination boilers

Open vented systems

Pressurised or open vented central heating systems? open vented systems are now old technology when it comes to a wet central heating.

You can use our boilers on an open heating system, but the require minimum head is 8 metres,

But we don’t recommend it as open vented system allow oxygen ingress into the heating water, which result in corrosion in the system, with standard radiators and some thermostatic radiator valves being manufactured in steel this is not a good idea.

Electric boiler with 9kw Output electric powered

We at Flexiheat UK limited, supply and stock a large range of electric boilers, with our 9kW electric boiler being the best on the UK and Irish markets. Having many benefits such as the best boiler modulation or turndown ratio on the market. Being extremely compact and suitable for use in a house, apartment, mobile home, or flat, along with other types of residential properties. With soft start and zero volt switching to avoid power surges.

Please don’t hesitate to contact our sales customer services team on 01202 822221 or use our email contact form via the contact tab above to message us and get the best price. We normally have stock of the electric boiler unit on the shelf, or we can arrange a delivery on a small pallet service, which can either delivered on an overnight delivery service or a 2/3-day delivery service depending on the customer requirement. All our customer invoices are inc vat, as we are vat registered company number GB236 9061 01.

Modular Boilers Commercial

Commercial modular boilers with high energy efficiency

modular boilers commercial with high turn down ratio

Modular boilers commercial with high turndown ratio and large heat output ratings from Flexiheat UK

Modular boilers commercial – Organizations that require hot water for their commercial space heating, such as schools, hotels and office buildings complexes, frequently employ a modular boiler or a modular boiler system, as they are highly efficient, high performance heating solutions.

Modular boilers are designed to be a high performance and cost-effective alternative to a large single boiler for commercial heating. Each module can be a standalone boiler put in a horizontal arrangement or even as a vertical stack of boiler modules arranged one on top of the other, which gives the boilers an incredibly small footprint, which is great for a boiler room with limited space and allow quick installation for your heating and hot water requirements.

commercial modular boilers; hot water boilers; water tube boiler; energy saving boiler plant

Older vertical mounted modular heating boilers / plant – floor standing gas boilers for commercial buildings

The main advantage of this modular boiler design is that if one module fails, the remaining other modules carry on working normally and continue to provide heating, as the boilers run in a cascade operating configuration. That means you won’t be wasting precious operation time due to routine maintenance or repairs. By comparison, if a traditional boiler fails, the whole plant shuts down until the boiler is repaired or replaced.

The net result is increase system security for the heating hydronic systems, as modular systems always provide some level of heating, making them the best solution for commercial applications that cannot afford to be with some level of hot water, whether it be for heating or for the production of domestic hot water. You get long-term durability, economies of scale with these boilers as they match the load of the heating system very well.

modular gas condensing boilers with high turndown ratio and high energy efficiency for better heat load matching for the hvac systems

Newer gas fired condensing boilers – with high turndown ratio for better heat load matching for the hvac heating systems- up to 2,000kW of output when used in cascade with stainless steel heat exchangers

 

Commercial gas floor standing modular boiler range with condensing technology 180kW and 240kW manual Flexiheat UK

 

If the building services engineers incorporates into the design one backup modular boiler to address demand uncertainties, the capacity is available without consuming energy unless demand demands it. Furthermore, the heating system has redundancy. Any present unanticipated demand might be satisfied by installing more modular units if space is provided in the design process for future development.

For retrofit projects, an efficient and flexible approach can be achieved to either an old boiler replacement, with the many benefits of a smooth changeover installation or they can also be installed alongside the existing heating boiler that services the building. The boilers are easier to physically handle during transport and installation.

With their compact size, the ability to be fitted in tight spaces is a real benefit.

Modular boilers provide demand-based control management to allow for changes in total heating capacity as well as variable seasonal heating capacity or requirements, which results in energy savings.

In cascade mode all the boilers (which these days are a condensing boiler to comply with the ErP regulations), have one master controller installed alongside the relevant safety devices incorporated with the modular boiler system.

cascaded modular boilers with common flue header from Flexiheat UK

Cascade modulating boilers which can be linked with a common flue header system

Reduce carbon footprint in commercial buildings

These days condensing modular boilers are the standard modular boiler system installed in commercial heating applications, as commercial boilers from 70kW to 400kW have to achieve high energy efficiency, as opposed to the older traditional boiler or conventional boilers that used to be non-condensing boilers.

Condensing boiler technology ensures highly efficient central heating solutions, which is essential in these times of rising energy costs with energy saving being at the top of the HVAC industry and the end users considerations.

Modular boilers work by dividing output capacity, and also increase the heating systems security, with great fuel efficiency as opposed to conventional boiler systems. In short modular boiler systems provide not only a secure but also an efficient approach to essential heating solutions.

Modular boiler systems are not however limited to non domestic buildings or commercial buildings, as they can also be utilised in larger domestic space heating applications as well as opposed to a single boiler room install.

gas modular condensing boilers with high turndown ratio;energy saving; hot water climate system; temperature climate control

Modular condensing boilers for large domestic or commercial hot water heating – 75kW, 100kW and 120kW are two boilers in one casing with 20:1 turndown ratio – with stainless steel heat exchangers

Modular boiler systems

What are the advantages of modular boiler systems, and what do modular boilers provide?

Even if one of the modular boilers fails, the remaining boilers in the system can keep the building warm enough. Modular boilers are also far more convenient to service. Access to the boilers is typically easier, and one module can be serviced while the others continue to satisfy the system’s heat demand without causing unplanned downtime to the heating system.

Energy efficiency by better heating load matching

One of the key benefits of using modulating boilers installed in a modular boiler system is to precisely match the heat load profile of the building is of large advantage. The modulating boilers in a multiple boiler system can be regulated in such a way that they modulate together and equal the system demand, thanks to a sequence controller installed in the system.

Each modulating boiler is operated in its most efficient mode, i.e., part-load, by igniting the maximum number of boilers required to match the load, with each running at or near its minimal modulation, making them the ideal modular boilers for commercial hotel or similar heating.

This keeps the system’s operating efficiency at a high level or the most efficient state all the way up to maximum output requirements.


Repair and preventive maintenance

A multiple boiler system enables heating system security, as one of the primary advantages of the modular design is that if one of the boiler modules requires repair or maintenance, the others can continue to operate and provide heating while the affected boiler module is repaired. That means you won’t have to worry about maintenance or repairs interrupting your operations.

By contrast, if traditional boilers (i.e. large single boilers) fails, the entire heating system shuts down until the boiler is repaired or replaced in commercial applications.

Turndown ratios

Modular boilers offer some great benefits when compared to conventional systems, with single large boilers. A single large conventional boiler will have a high minimum output level, whereby multiple small units or separate modules, each with their own burner allows the individual boilers to modulate to the heating and hot water system variable levels or requirements which leads to lower energy consumption for these commercial boilers.

Building automation system (BAS) or Building management system (BMS)

Building automation or building management systems are often used as one master controller for commercial building HVAC systems. This means that the modular boilers work under the full control of the BMS system, which monitors the heating demand, and adjusts the heat output and the numbers of modular boilers needed to operate during the heating season.

This results in the space heating being run at the most efficient state, resulting in high efficiency, reduced energy usage and energy operating costs. All our modular boilers can be controlled by building automation or management systems, directly via a 0-10V signal.

We also do controllers which are a mini control system for the modular boiler system, which will also ensure rotating boilers or heat exchangers within the modular boiler systems.

Heat exchangers

All our gas commercial boilers range and commercial oil condensing boilers range benefit from a reliable and efficient stainless steel heat exchanger.

modular condensing boiler heat exchanger with large turndown ratios; energy efficiency; hot water; direct water heaters

Commercial heating boiler heat exchanger with high modulation rate – manufactured in stainless steel

Hot water boiler system

Modular boiler systems may be set up to sequence boilers in cascade or unison mode. Cascade control starts a boiler at its lowest heating rate, regulates it to its highest rate, and then starts the next boiler to fulfil the system demand. This approach uses the fewest number of boilers to meet the heating load requirements.

For our gas fired ( natural gas or propane gas options ) modular boilers, please see our dedicated webpage here  – Commercial Gas Boilers 

or for our oil fired option – please see the following webpage – Oil Condensing Boilers 

and finally our industrial and commercial electric boiler range, which can be cascaded up to 5mW of output

Commercial boilers – Modular boilers

We at Flexiheat UK, do a full range of modular boilers commercial in various fuel options such as natural gas, propane gas or oil, with the best boiler turndown ratio on the market, that provide reliable heating solutions in a modular or cascade installation. Please don’t hesitate to contact our sales service team on 01202 822221 or use our email contact form via the contact tab above to message us.

Condensing Water Heaters Legislation UK 2022

Condensing Water Heaters Legislation UK

Part L building regulations logo - condensing water heaters for commercial applications.jpg

Condensing water heaters – The UK government announced revisions to the approved document “L” of the Building Regulations of England and Wales, which defines the criteria for the energy performance and carbon emissions of new and existing buildings, on December 15, 2021. One of the modifications involves tighter thermal efficiency for domestic hot water systems in commercial and industrial water heating applications.

Section 6 of the Scottish Building Standards covers energy performance, which means that in Scotland to you must also install condensing water heaters to.

Guidance documents, called the Technical Handbooks in Scotland and the Approved Documents in England and Wales, provide support for the regulations. How to actually attain compliance is explained in the guideline publications.

Energy efficient water heating for domestic and commercial applications

Usually what happens first in the commercial market, often filters down into the domestic market fairly soon after- but there is no news on this as yet.

Energy savings water heaters

Direct­ fire water heaters must have a minimum heat generator seasonal efficiency of 91 percent (gross calorific value, GCV) for natural gas and 92 percent GCV for liquefied petroleum gas (LPG) by June 15 of this year (2022) . For indirect fired water heaters, the minimum heat generator seasonal efficiency (GCV) for natural gas and LPG is 91 percent. The revised criteria apply to both existing and newly constructed non­ domestic building stock.

In practise, what would the higher criteria imply? It effectively eliminates the possibility of replacing non condensing water heaters with like­ for ­like models in the majority of non-­domestic buildings. Only in extreme cases, where a condensing water heater replacement is declared unsuitable by the building control authority, may a minimum seasonal efficiency of 80 percent for gas or 79 percent for LPG be employed.

Installing our high-efficiency condensing water heaters can result in energy savings of more than 20%.

Conserve energy

The increase in hot water heating efficiency, is part of the government’s plan to attain the UK’s net zero objective by 2050, and it represents a significant step toward more energy­ efficient water heating in non­ domestic buildings.

Direct­ fired water heaters are an efficient and cost­ effective way of delivering huge volumes of hygienic hot water, and hospitals, hotels, and leisure centres, which have a high need for instantaneous hot water, are just a few of the structures that rely on this technology.

Until recently, most manufacturers and suppliers supplied both condensing and non condensing types. Condensing water heaters are capable of capturing and reusing latent heat that would otherwise be lost through the flue gases or hot combustion gases . As a consequence, they are up to 20% more efficient than conventional models. Flexiheat Water Heaters, for example, may attain efficiency of up to 98 percent.

A condensing water heater in condensing mode as it extracts all the energy from the fuel

Condensing water heaters – Because the flue gases leaving a condensing water heater are cool, they form a visible mist or plume of water vapour whilst leaving the flue terminal.

We do a full range, with all of our units having a stainless steel heat exchanger, low NOx combustion emissions, better insulation, high energy efficiency, that can be used in a direct, storage or recirculation hot water system – range is here

The stainless steel heat exchangers that are used in our water heaters ensure great thermal efficiency, coupled with our more efficient burners, result in a high level of energy being recovered from the exhaust gases (the same way condensing boilers work) and the net result is less energy is used by the water heater

Energy efficient hot water heaters

The benefit of moving to more efficient condensing units in terms of energy savings is obvious. Many organisations, however, continue to rely on the ability to replace non-condensing water heaters with like­ for ­like models as the present equipment reaches the end of its usable life. Because no substantial work is required, the appliances may be replaced promptly and with minimum disturbance to the building’s regular operations.

While the transition from non­ condensing to condensing water heaters can be relatively simple, some aspects, such as flueing and condensate arrangements, must be evaluated on a project­ by­  project basis. So, our recommendation is to begin working with building owners today to create an asset management programme. They will be adequately educated to prepare ahead to future proof their hot water systems and save energy with regular condition audits and plant asset inspection.

Factors to consider when moving to condensing gas fired water heating

There are two main factors

  1. Condensate drainage –  Unlike non-condensing types, condensing water heaters require an appropriate drainage point to discharge the condensate (the water vapor is cooled via the condensation process and releases the energy – in this process condensate is produced) that forms during normal operation. While a condensate discharge point may be close to the water heater installation, if one is not accessible, another place may need to be found or a soakaway used to accommodate the condensate pipe and discharge – which is normally PVC pipe.
  2. Flue issues – A vertical flue from the plantroom to the roof is usually required for a classic non-condensing water heater. When replacing a non-condensing unit with a condensing water heater, we have options of using either a co-axial flue, split flue or a single flue system with lengths up to 40 metres or lining the existing flue rise may be a possibility, depending on installation standards and restrictions. Alternatively using a horizontal flue that would pass right through an adjacent outside wall are often used , but this is contingent on sufficient wall space and the terminal location – which must comply with the following standards and guidelines for water heaters up to 70kW
  • BS5440: Flues and ventilation for gas appliances with a maximum rated power of 70kW (net); Building Regulations Part J Section: Additional regulations for gas burning appliances with a rated input up to 70kW; IGEM UP 10: Installation of flued gas appliances in industrial and commercial establishments.

By shifting from a reactive to a proactive mindset, they will be able to better prepare for change and budget for future enhancements. Even on the rare instances where exclusions may apply, forethought is essential. Early interaction with building control will be crucial if heating engineers are to be happy with the advice and prevent trouble.
With difficulties come chances. An update will prompt a re-evaluation of the building’s hot water demand. Over the last two years, many businesses will have seen fluctuations in building occupancy. Finally, the revised calculations may indicate that a smaller water heater is now required, resulting in lower initial capital investment and longer­ term operating expenses.

The transition to condensing technology provides designers and end users of hot water heating system with the opportunity to reposition the water heaters to make greater use of space, for example, at a hotel, the original plant room may be turned into an extra bedroom etc.

Budget allowing, there may even be the option of combining low carbon air source heat pumps with condensing water heaters in a hybrid system to reduce carbon footprint even more and achieve or strive for a net zero economy by 2050

Nobody wants buildings to be left in an emergency scenario without hot water, so if your looking at replacing you existing gas fired non condensing hot water heater , with a now compliant to regulations gas fired condensing water heater (tankless water heaters or storage water heater options – all with stainless steel heat exchangers) then we at Flexiheat UK are the company to speak to – call our sales team to get a price on 01202 822221 or use our email contact above on the web page.

Hot Horse Shower

Hot horse showers

horse shower uk; hot horse showering; lpg water heater;portable horse shower

A hot horse shower is an absolute necessity on every yard, and the perfect solution for washing horses after exercise or before competition. Our propane gas powered water heaters provide not only instant hot water , and a never ending supply of it, all with the touch of the on button.

The warm water our horse shower unit produces , can not only be used to wash your equine, but also dogs or even humans should the need arise .

Gone are the days of bathing your horse, with a sponge and a bucket of ice cold water. Your horse and you deserve better in our opinion . Warm water, at an accurate water temperature to wash your horse or horses is a demand that most owners want as a minimum these days.

horse; shower;uk;seller portable horse;horse shower portable;portable horse shower

Why use hot water to wash horses

  • Hot water helps activate the shampoo and deliver it to the roots of the hair, allowing it to effectively perform a better job of removing debris and grease form your equine.
  • Hot water results in happier horse, especially when the winter when the temperature is cool or cold
  • Even in the summer, if the horses are really sweaty after activity, it is recommended not to hose the horse with cold water, as this can create complications such as significant blood vessel constriction – it is recommended to use hot water or lukewarm water.
  • These are some of the reasons and benefits of using an instant hot water horse shower.

Equine shower range

We do more than one size of water heater , but our most popular horse shower unit is our SF14 an internal mounted hot water generator, this has no pump, and is a direct flow type of hot water heater, with power output of 24 kW – This will produce 15.82 Litres a minute of 40C hot water temperature in typical summer time running , or 10.54 litres in the winter period.

Thus you could run 2 horse showers continuously in the summer, or one very good horse shower in the winter period. It’s also ERP “A” rated non-condensing low NOx water heater, which can be connected to a propane gas cylinder or propane gas bulk tank.

horse showering hot water system; SF14 water heater; lpg gas;portable horse shower

SF14 Water Heater – Internal – for horse showering supply

 

Please note this unit has 16mm diameter heat exchanger water ways – the largest we know of on the horse shower market- This diameter ensures very minimal pressure drops, lowers the possibility of clogging, improves thermal efficiency, and makes cleaning easier. This is particularly crucial in locations where the water is hard.

With an easy-to-use control panel to navigate through the menu items such as temperature setting on these high efficiency lpg hot horse showers.

Download the SF14 Low NOx gas fired water heater manual Flexiheat UK

You literally pay for what you get in this product sector, there are a lot of horse showers that are imported from the far east, they are poorly made. If you are considering one, establish their heat exchanger diameter, ask about spares back up, if they are “CE” approved and tested. Our units are manufactured in Europe, are fully CE approved, and have “A” rated ErP efficiency levels – which is important with ever rising energy cost. Pay cheap, pay twice is so relevant to these products.

Water pressure

Please note this SF14 water heater requires a minimum water pressure of 0.5 Bar and a maximum water pressure of 6 Bar. So you require a mains water supply to use to the full potential of the water heaters performance.

Instant hot water

Our horse shower provides instant hot water on demand, which ensures the lowest energy usage and fuel bills.

Electric powered showers

There are a few electric hot horse showers on the market , which plug into a standard 240 volt – 1 Phase electricity power supply that you have on the riding yard, but these only have a 2kw output capacity, which means that your only getting a 3 litre per minute water flow rate – simply not good enough for a good horse shower

A standard shower head is 7 Litres per minute flow rate – for example

The only realistic solution for a good horse shower is gas as the fuel -in particular propane gas also known as LPG gas , as this is the most commonly available and easiest gas to get for your horse yard- because it can generate a lot of hot water from relatively small gas bottle or gas bottles, or even a bulk tank if so required.

Portable horse shower ?

Yes, we’ve seen them on the market such as the hippo shower or hippo showers , but whilst a portable horse shower may suit certain horse riding yards or horse and pony owners- they come with some negatives, often the gas ignition system of the water heater is powered by two “D2” batteries which is fine in principle, but it naturally consumes battery power to the point that you need to remember to switch the device off afterwards or you end up with a lot of (expensive) dead batteries.

Other gas powered horse shower systems have a pilot light system for the propane water heater, which can be blown out by any strong gusts of wind.

Horse shower portable

Safety really is an issue with portable horse showers – we believe that the units should be placed inside the stable area or another safe location such as a tack room and the water transported to the horse via a hose – you can easily get hose with spray or shower head set ups that are of the retractable “magic” coil type, which are very neat and tidy – This literally is the case of ” horse to warm water or warm water to the horse ”

portable horse shower;menu items;propane gas;hippo showers;water heaters

Shower portable horse – electric

And when it comes to electric / electrical powered portable horse shower – again – the smaller portable horse shower units – which have a 13 amp plug – are only 2 kW rated – and aren’t powerful enough to produce the hot water you require to have an adequate shower and often suffer from water pressure problems ( one company / manufacturer actually stipulates that they must be used with a bucket and cannot be used direct from a mains water tap) . I thought we where trying to get away or past from using a bucket ?

Contact us 

If you are interested in our hot horse shower we sell direct, so you can purchase your horse hot water shower water heaters range, which come with a 2 year guarantee, directly from us at Flexiheat UK . We carry stock, so give our customer service team a call for a price for a new equine hot water shower heater.

Wall mounted industrial electric heaters – Industrial fan heater

Wall mounted industrial electric heaters – 5.3 kW to 22.8 kW output

Wall mounted industrial electric heaters from Flexiheat UK these electric fan heaters are for climate control or heating of buildings where off the floor wall mounting is required. These electrical heating space heaters have PTC heating elements with protection against overheating of the heater. The fan fitted to the electric wall mounted heater has a three speed fan for varying the airflow. They can be fitted with a thermostat for accurate temperature control.

Wall mounted industrial electric heaters- 3 Phase/ 415 Volt from Flexiheat UK

Wall mounted industrial electric heaters are a great heating solution, for the heating requirements for industrial and commercial environments or commercial applications such as factories, warehouses, garages, shops or any large areas that require installation of wall mounted electric heaters to heat either the staff or customers, with comfort heating powered by electricity.

These industrial heaters, are wall mounted fan heaters with the heating capacity, to quickly achieve the heat output and temperature you require. These wall mounted electric heaters benefit from a very low noise level, with intelligent fan control that not only controls the fan speed of these wall mounted heaters, but can adjust the heat output for improved energy efficiency.

These heaters are designed for industrial and heavy commercial use and are built to work correctly in these environments – these are not domestic ones – these are truly industrial units with the many benefits of sturdy construction, industrial grade heating elements which are well suited to larger industrial environments and the heating of them, such as electric warehouse heaters.

Sometimes these units are referred to as an electric fan coil heater or a fan coil unit electric heater.

Any industrial building or a larger industrial environment that requires an electric wall full heating system should consider our fan heaters, as they have a very low noise level and produce a nice comfort temperature with a great airflow temperature which is important in the colder months.

At these heat outputs you will require a three phase electrical supply to power these energy efficiency wall heaters that free up floor space in commercial spaces and make them ideally suited to electric warehouse heating.These units can be used in a ceiling mounting configuration as well.

These are not infrared heaters, they are a warm air wall mounted heater range.

In order to produce a warm airflow temperature, the wall mounted heaters fan speed automatically adjusts in relation to the room’s current temperature via intelligent fan control. When the heater model is powered on in a cold room, this prevents these installed wall mounted heaters from blowing cold air into the commercial spaces. The airflow temperature depends on what heat setting that is selected either manually or automatically by the controller used to quickly achieve the desired room temperature.

Running costs for these electric wall mounted heaters / fan heaters are good as they are 100% energy efficient.

They are also cheaper and easier to install than wall mounted water heated air heaters, as water heaters require both a flow and return pipework, installed on the wall or up in the ceiling area to bring water to the water heaters, as well as other accessories such as pumps.

Also, these wall heaters are cheaper and easier to install than gas fired heaters, as they have no flue pipe system to install through the ceiling or wall of the commercial premises.

Wall mounted electric heaters industrial

These wall mounted electric heaters free up valuable floor space, which is often at a premium in factories, warehouses, or a garage making these models particularly suitable for heating these type of environments with their large heat throw. These wall heaters are designed for hard work and are ideally suited to large workshops and many other commercial applications resulting in an economical full heating system with 100% heat output energy efficiency.

An installation picture of our electric wall mounted industrial fan heaters 3 phase from Flexiheat UK these electric fan heaters are for climate control or heating of buildings where off the floor wall mounting is required. These electrical heating space heaters have PTC heating elements with protection against overheating of the heater. The fan fitted to the electric wall mounted heater has a three-speed fan for varying the airflow. They can be fitted with a thermostat for accurate temperature control.

An install picture of our wall mounted warm air electric heaters industrial – these are 3-phase electric fan heaters from Flexiheat UK – freeing up valuable floor space.

Range options –

The “S” for the smaller wall heaters  – up to 10.8 kW heat output or the “L” for the larger wall heaters-  is up to 22.8 kW heat output.

Wall or ceiling mounted industrial electric heaters LEO EL form Flexiheat UK; fan heaters wall; heaters wall mounted; industrial fan heater; heating; fan heater wireless

LEO EL Range of industrial electric wall mounted heaters from Flexiheat UK

These electric fan space heaters have a fan IP rating of 20 –

The smaller unit has 2 heat levels or outputs – 5.3 kW or 10.8 kW heat output and the larger has 3 heat levels or outputs – 6.8 kW , 16.3 kW or 22.8 kW heat output.

The operating maximum temperature these heaters can withstand within the heating area is 50C.

With two options of remote control, either a basic “TS” remote control that has in inbuilt thermostat to adjust heat settings and manual fan speed control. The next option is our T-Box which is a fully BMS (building management system) compatible remote control, which can be a self-contained controller or be linked into a BMS system.

Download the Electric Industrial Unit Heaters EL BMS Flexiheat Brochure

We also do light industrial heaters or commercial electric fan heaters models which are electric wall mounted electric heaters which can be run off a single phase electric supply, however the maximum output this range of commercial heaters is limited to 6kW and the air flow and heat throw range of these fan heaters is somewhat less than our industrial heaters range.

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Commercial electric heaters from Flexiheat UK – fan heater wireless

But being more compact fan heaters, these commercial heaters are suitable for heating shops or small garages where floor space is at a premium and the rooms air environments do not have too much dust. These heater units can also be supplied for heavy domestic environments as well.

Mounted wall control accessories 

This range of wall mounted electric heaters can be supplied and connected to various control options to produce an even ambient temperature from floor to ceiling and additionally, these mounted industrial fan heaters are equipped with an overheating protection system (both for the heater and fan).Both control options have a thermostatic control and a ventilation only mode which allows the fan to move the ambient temperature air flow around the area served by the heating system, which is useful in the summer periods.

We do a basic control option – the TS controller which has temperature and fan speed switches and thus control of the fan heaters- The fan speed control, and thus the airflow is manual, whilst the temperature and heat control of the heater and room via the thermostat is automatic on these TS units.

 

ts controller for our wall mounted electric heaters;

TS controller for our wall mounted electric industrial heaters Flexiheat UK

 

 

or we do a more advanced control equipment for this heater, which adapts the ec motor on the heater, and adjusts or switches the airflow and heat output levels according to the set temperature of the thermostat in the room. This wall mounted controller is designated the T-Box and is perfect for thermostat for industrial and commercial environments.

T Box controller for Leo Electric unit heaters from Flexiheat UK; electrically heated air; heaters wall mounted; industrial fan heaters

T Box controller for Leo Electric unit heaters – full BMS compatibility

Mounted on the wall or ceiling even

This wall mounted heater range can if so, required be ceiling mounted. Should the installation of the industrial fan heater change or the wall or walls space be required for another purpose, then you can mount these industrial heaters from the ceiling.

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Wall mounting heights for our industrial electric heaters Flexiheat UK

Note for ceiling installation – there must be a minimum of 20 cm from the back of the heater to the ceiling.

Wall Installation 

When wall mounted the maximum height for the smaller “Leo S” model is 3 Metres .The larger heater, the “Leo L” model ,can be wall mounted up to 6 Metres from floor level. Both units can be wall mounted at a lower level if so required.

wall mounted fan heaters

For these wall mounted electric heaters we can also supply a mixing chamber which allows fresh (outside) air to be brought into the space something we can’t do on our commercial heaters mentioned above. The air can be heated via the heat exchanger and then directed within the building, depending on the requirements. PTC electric heaters are used to heat the electrically heated air flow, which is subsequently blown within the large areas or room, depending on the needs. There are three air intakes in the mixing chamber: two for recirculated air and one for fresh air. The degree of damper opening may be easily adjusted from 0 to 100 percent.

Our fan heaters wall mounted electric heaters with mixing chamber are equipped with a filter – as standard it’s a coarse 80% (EN ISO 16890-1E) class filters installed on the air inlet. These filters ensures that the majority of coarse debris is filtered out from entering the wall mounted fan heater and its machinery, and wiring accessories.

 

3 Phase wall mounted industrial heaters

The availability of a 3-phase supply, as with any other electric heater type, greatly expands the potential alternatives as compared to a single phase. Three phase is not a problem in most industrial environments with electrically operated equipment. All of the machinery will run on three-phase power, and three-phase circuits will be installed. The existence of 3 phase not only expands the number of heaters accessible, but also the range of heating output possible, with a 3-phase wall mounted heater capacity typically limited to 22kw within single fan heater. You can use multiple heaters wall mounted to cover the heating requirement. These electric fan heaters have the potential to heat very large industrial and commercial working areas all the way down to shops etc.

Commercial and industrial wall mounted electric heaters

Should you require more information, availability or prices on our wall mounted industrial electric heaters / electric wall mounted industrial heaters then please don’t hesitate to call us / contact our sales team on 01202 822221 or use our email contact form via the contact us tab.