High Efficiency Boilers
Each of Ideal's HE boilers contains only those parts that are necessary to deliver dependability and performance, or that make the product easier to fit, operate or install. As a result, they all offer exceptional levels of reliability and are easily maintained and serviced.
Common components
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Classic HE |
Many Ideal HE appliances share a wide number of common parts - making them easier to install, service, and maintain. These items include components such as the gas valve, burner, venturi, fan, fluing system and controls.
Easy siting
All Ideal HE appliances are available with a wide range of flue options. These make siting the boiler in the property easier as long flues can be used. It also makes positioning the flue terminal easier. |

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Simple to fit and service
Because they have so much in common, fewer spares are required to maintain the range of boilers. Most products are 'self-adjusting'(other than the Ideal istor HE). This allows the installer to fit the products without the need to make any alterations. The boilers, being fully modulating, (classic HE excepted) adjust themselves to the required output to meet the heating load.
Unprecedented reliability
We have introduced new test procedures which are comprised of a demanding series of application tests to ensure that the boiler is fault-free. We have never been tougher on ourselves or our products, and you will find that it shows in the new standards of reliability which these products have attained.
Standard Efficiency Boilers
Standard Efficiency boilers fundamentally consist of a burner that burns natural gas and produces products of combustion which are at a high temperature.
These products of combustion (flue gases) are then passed through a heat exchanger, which extracts heat from the combustion products, and transfers it to the water passing through the heat exchanger.
Standard Efficiency boiler heat exchangers are traditionally made of cast iron and more recently some have been fabricated using copper. Having passed through the heat exchanger, the flue gases then leave the appliance via the flue. Standard Efficiency flue gas temperatures are generally around 170-180°C so a considerable amount of heat is lost to the atmosphere.
Standard efficiency products are typically between 78% and 82% efficient (SEDBUK C & D), and are available in both 'Wall Hung' and 'Floor Standing' configurations. All Ideal's Standard Efficiency boilers are SEDBUK D rated and consists of the classic SE, mini Cand mini S.
In the case of extremely difficult installations a Standard Efficiency may be installed following an assessment by the installer but this is regulated through a points system.
- The purpose of the assessment is to find the installation position for a condensing boiler at the lowest cost ignoring obstacles and customers preferred position.
- The assessment must consider all feasible condensing boiler installation options for the relevant fuel choice and the option with the lowest points score recorded.
- Evidence of exceptional circumstances is proven only when the lowest points score exceeds 1000, in which case it is permissible to install a Standard Efficiency product.
- < 1000 points, fit High efficiency (SEDBUK A/B) in position acceptable to the customer.
- > 1000 points, exceptions applies - Standard Efficiency (SEDBUK D) boiler can be fitted.
- In practice High Efficiency boilers can be fitted in most installations (circa 95%) and are preferable.
- High Efficiency Boilers offer benefits of lower running costs and emissions than Standard Efficiency boilers. Some SE boilers are capable of operating older, less efficient heating systems (e.g gravity fed hot water) but again Building Regulations require these to be updated when replacing a boiler.
From April 1st 2005, it became mandatory in England and Wales through Building Regulations to only install High Efficiency boilers, whether in new houses or as replacements. Standard Efficiency boilers can only be fitted under exceptional circumstances after a rigorous site check process has been undertaken by the installer.
Combination Boilers
Combination boilers or "Combis" are a particularly attractive form of heating because they dispense with the need for the hot water cylinder in the airing cupboard, and also the large cold water cistern ("tank") plus small header cistern in the loft which are otherwise needed in conventional vented heating systems. All the major components are housed in one unit which makes them very convenient to the installer. They are especially suitable for smaller households with inconsiderable heating and hot water demands. In the past combination boilers have been less suited to larger households, however Ideal's latest models can cater for large households hot water needs. For example the Ideal isar boiler range has a 35kW which output model will cater quite easily for a homeowners heating and hot water needs in a 3 or 4 bedroom house. For anything larger Ideal recommend their istor boiler (see below).
Unlike heat-only or system boilers, the casing normally houses the pump and DHW heat exchanger and motorized valve - the system is all in 1 box. Because it is a sealed system, Central Heating (CH) water expansion has to be accommodated in a pressure vessel which is also within the casing. Instead of an open safety-vent pipe looping over the expansion cistern in the loft there will be a pressure-relief valve. A gauge is usually provided to indicate that the CH system is under pressure. It will need occasional re-pressurising from the mains water supply so a facility for a filling loop (flexible braided pipe) is provided. To comply with the water regulations the loop must be physically removed upon completion.
System Boilers
A system boiler is a compact and highly efficient unit giving all the heating you need, with significant savings on running and installation costs.
A system boiler is the modern expression for, basically, a heat-only boiler. But with all the necessary extras to fit to a sealed, fully pumped heating system built in. This allows quick and easy installation. (Also looks a lot tidier than the a low water content boiler with the necessary extras to make it a sealed system)
These are larger then a standard heat-only boiler because of the extra components within the boiler, but are a lot easier to install.
A system boiler contains an expansion vessel with a pressure relief valve, gauge and filling loop together with a pump, which is the basic difference between a heat-only boiler and a system boiler.
With a conventional heating and hot water system a separate feed and expansion cistern and circulating pump are required to be installed. The system boiler incorporates all the major components built-in. All of them pre-wired, pre-plumbed and pre-tested for greater reliability as well as a quicker and neater installation.
Ideal has one High Efficiency System boiler which is the icos system HE
Conventional boilers are often referred to as "heat-only". The High Efficiency models tend to be called "High Efficiency Heat-Only".
In a conventional boiler gas jets play onto a cast iron heat exchanger through which water passes to be heated. If used to supply taps, hot water cannot be provided on demand but must be stored, usually in a copper cylinder. This type of boiler has relatively simple controls and energy consumption can be high but the cost of this is moderated by the low maintenance costs. They are versatile in that they can be used in almost any type of property and can be pumped or gravity fed.
Ideal Boilers have three conventional high-efficiency boilers. These are the icos, mexico HE and classic HE.
Today's lifestyles have meant our demand for a good supply of hot water has steadily increased. This leaves developers with a dilemma - ensuring a decent supply of water without requiring a large hot water cylinder that will take up valuable space within the home.
In recent years, combination boilers have become prevalent in larger properties. Their popularity has been driven largely by the promise of instant hot water, but the need to install one box that fits into a kitchen cupboard has meant that new solutions were needed to meet the growing demand.
Yet as combi boilers become more prevalent, homeowners of larger properties (4/5 bedrooms/2 or 3 bathrooms) have become more aware of the disadvantages. Although the boilers do provide hot water on demand, there is a limit to the amount of water that can be provided at any one time. This means that baths take longer to fill and the temperature of a shower will be affected if the washing machine is also running, or even if another member of the house turns on a hot tap downstairs.
With increasing affluence of consumers resulting in larger houses with more bathrooms and the full range of white goods, including dishwashers, many of the current combi boilers on the market are unable to cope and in big properties developers need to revert back to a separate water tank. As a homeowner you are looking for bigger room sizes and more living space, with a boiler hidden from view, doing it's job day in day out with no fuss.
However, Ideal Boilers has the answer to these issues. The company's istor boiler has combined the boiler and water tank in one box, providing large amounts of hot water whenever required by the homeowner.
The istor boiler comes in two versions, the HE260 and HE325. These two figures represent the amount of water that each boiler will deliver in 10 minutes, ensuring that either is capable of heating a shower and a bath simultaneously. To achieve the best possible delivery rate, water is stored at 70°C and then blended with cold water to achieve a maximum temperature of 60°C. The tank will also recover in between 7 and 10 minutes, and for homeowners used to traditional tanks taking 20 or 30 minutes to refill, this will be a very pleasant change.
All parts associated with the istor are present in one box designed to fit into an airing cupboard or utility room, helping to free up valuable space in the kitchen. To ensure easy installation, the boiler comes in two parts which are then stacked together. Ideal has designed a pre-piping frame, which simplifies the necessary plumbing and no additional space is required around the boiler - the product height is the installation height
Ideal has one High Efficiency System store boiler range which is the istor |