Ideal Boilers has added the Icos system HE15 to its Icos HE range of boilers.

Suitable for fitting in a fully pumped sealed system, the unit has automatic controls that will modulate its heat to suit the demands of the heating load and has a variable thermostat for central heating temperature control. The Icos system HE15 is SEDBUK A rated, with an output of 8.8-14.6 kW.
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Boiler Controls And Part L

The changes to Part L will mean that heating controls will have an increasingly important part to play in commercial installations, says Ken Percival, director and general manager at Potterton Commercial.

Controls need to be considered early in the design process and their choice is significantly affected by the use of the building. Compensation controls meet Part L2's requirement to allow a building to be operated and maintained in such a way as to make the most efficient use of fuel. Also under Part L2 is the need for zone controls. The draft regulations state that systems should be sub-divided into control zones where each may have differing uses and heat requirements - these zones must be capable of independent timing and temperature control.

Here comes the Sunline

MHS Boilers has launched the Sunline range of radiant ceiling heating panels. Suitable for a range of applications such as schools, leisure and retail, the panels are manufactured from 1.2 mm cold rolled steel, with a powder coat finish in white and are available in widths from 300 mm to 1500 mm at 150 mm increments.

The units operate by passing hot water from the building's boilers through pipes welded into the large area profiled sheets, which have a 40 mm layer of thermal insulation attached to the upper surface.

The company claims the panels can provide up to 30% savings in running costs, which are due to the short heat-up time for the low water content units, coupled with low maintenance and contollability.
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Aces high

Halstead Boilers has launched the Ace HE condensing boiler. The SEDBUK A-rated boiler is available in two output options and comes with a pre-mix burner and stainless steel heat exchanger to increase efficiency as the pre-mix burner modulates down.

The unit can be used with six different flue kits and can accommodate flue runs of up to 5 m horizontally and 12 m vertically. It has specific flow rates at 308C temperature rise of 10.9 litres/min for the Ace HE 24 and 14.7 litres/min for the Ace HE30, with dimensions of 758 mm high by 446 mm wide by 327 mm deep.
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Going to the Maxx

Andrews has extended its range of products using condensing technology with the Maxxflo stainless steel condensing storage water heater range, which the company says has been developed in line with the new Building Regulations Part L2.

The unit has stainless steel tank options of 200 litres and 300 litres, with four output sizes from 30 kW to 120 kW and includes a built in anti-legionella feature. Cold water from the base of the tank is fed into the externally mounted heat exchangers and then to the top of the tank, so that hot water is available instantaneously.

The heaters can generate hot water in the condensing mode up to 80% of the tank volume, producing a net efficiency of 109%.
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Compact and bisou

Vokera has introduced the Compact HE range of condensing combi boilers. Currently available in 25 kW and 29 kW versions, a larger 35 kW model will also be introduced later in the year.

The unit has a height of 780 mm and includes a range of functions, including a built-in time clock and Vokera's patented seasonal advanced regulation action, which adjusts heating output temperature depending on the outside temperature to maximise efficiency. A built-in frost thermostat protects the boiler, while anti-cycling control prevents wasteful on/off cycling and reduces wear and tear on the burner.
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Stoves

The Ravel, part of Euroheat's new HWAM range of contemporary heating stoves, is suitable for heating smaller living rooms and weekend cottages up to 120 m3 in volume. The stove has a subtle oval-shaped body, behind which is a patented automatic combustion technology that ensures efficient combustion. The stove comes in multi-fuel with a conventional flue or in gas with a balanced flue, so that it can be installed in rooms with or without a chimney.
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Specifying condensing boilers

Viessmann highlights the points you should consider before specifying a condensing boiler.

  • It is very likely that the energy cost picture will change completely within the boiler’s service life – is it future proof in this regard?
  • Build boilers and controls that are already designed to link renewable sources in to the system – solar being the most likely.
  • Match the boiler closely to the load – condensing boilers deliver their savings if the overall rating and the burner control systems are closely matched to the actual heat load.
  • Why stick to one boiler? A cascade of several boilers gives even better turn-down performance.
  • Let the controls talk – most installations of condensing boilers are to existing systems, so choose a boiler/control package as standard that can talk easily to the BMS and LON.
  • Look for lifetime costs – condensing boilers have an equivalent service life to a conventional boiler, but only stainless steel heat exchangers will deliver trouble-free service over this period.
  • A non-standard flue is often required, especially in replacement work – will it fit? Finally – rising fuel prices mean installing a conventional boiler is a false economy, so push for a condensing boiler. Payback times for the additional costs of condensing are often within two years; on large installations, it takes months.

Source

Building Sustainable Design