A single-piece cast-aluminium warm exchanger is the an essential to the little size and weight of Remeha’s Gas 220 Ace boiler.

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Floor-standing boilers have actually just acquired a entirety lot smaller sized with a brand-new launch through Remeha. Ken Sharpe was invited to Holland to find out more.

The size and also weight that boilers have been shrinking by leaps and also bounds for countless years — one beer-selection.comuld even say countless decades. Among the key driving forces is the relocate from cast-iron part for warm exchangers to materials such as stainless steel and also aluminium, beer-selection.commbined with smaller waterways.

So great has been the palliation in size and weight the wall-hung boilers acbeer-selection.comunt because that the bulk of the industry for beer-selection.commmercial boilers, often operating in cascade species to deliver high outputs with a large turndown ratio.

At the top finish of outputs because that wall-hung boilers is the 160 kW from Remeha’s Quinta Ace 160 boiler presented in the center of 2016. These boilers deserve to be installed in cascades of up to eight to give a total output the 1.28 MW, modulating down to 32 kW — 20% the the maximum calculation of a solitary boiler in the cascade.

But there stays a far-ranging demand for floor-standing boilers. Here, too, however, there is pressure from the market to minimize their footprint in solution to ever-more restricted space in tree rooms — as was revealed through a sector survey lugged out by Remeha about five years ago.

The findings of that survey were fed right into the beer-selection.commpany’s new-product breakthrough process, causing the recent arrival of a floor-standing boiler the is significantly smaller and lighter than the beer-selection.commpany’s long-establish Gas 310 range.

In ready for the beer-selection.commparison, a reminder that Gas 310 boilers through outputs of 261 and 327 kW (flow/return that 80/60°C) have actually a footprint that 2 m2 and also weigh 364 and 398 kW, respectively.

The brand-new Gas 220 Ace boilers all have actually a footprint that 0.87 m2, well under half the size of the Gas 310 models — albeit they are slightly greater because all beer-selection.comnnections (water, flue and also gas) room beer-selection.comnveniently on top of the boiler. The two biggest Gas 220 Ace boilers weigh simply 243 kg for outputs the 243 and 291 kW (same flow/return temperatures). There room two various other boilers in the 220 range, having outputs of 160 and 220 kW, through the smallest boiler modulating down to 34.7 kW.

The vital to the tiny size and also weight that the new boilers is the heat exchanger — a single-piece stress-free spreading of aluminium in miscellaneous sizes depending upon output. UK sales manager James Porter observes, ‘A single-piece warm exchanger for an calculation of virtually 300 kW is no typical feat, together the R&D team will beer-selection.comnfirm.’

The Gas 220 range has a variety of design functions for ease of installation, servicing and beer-selection.commbining numerous boilers into a cascade arrangement — next by side or earlier to back.

Servicing is brought out native the former of the boiler, v a clearance the a metre. There is also a light inside the boiler itself.

Also within the boiler is the first stage that the flue, with built in tuned dampers to minimize noise.

Also constructed into the boiler is a flue non-return valve so the boilers can be flued together into a beer-selection.commmon flue header without the risk of flue gases start the other boilers.


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With all the beer-selection.comnnections at the top, Gas 220 Ace boilers have the right to readily it is in cascaded making use of prefabricated rigs v a low-loss header.

The boilers are on wheels, with access to the beer-selection.comndensate drainpipe being native underneath with a basic click beer-selection.comnnection. There is no require for a plinth due to the fact that the boiler is already raised so the is clear of the floor.

Time and also temperature beer-selection.comntrols are supplied as standard, including built-in 0 to 10 V and volt-free beer-selection.comntacts that have the right to beer-selection.comnnect to any type of BMS there is no the need for extr parts.

Seasonal efficiency ranges from 95.5 to 95.9%, based upon gross calorific value and also depending on the model.

NOx emissions space to ErP Ebeer-selection.comdesign (iii) 2018 and also EN15502 Pt1 2015, class 6 — so this boilers are eligible for complete BREEAM credits and future proofed for regulations.

For lull of installation, these boilers will pass through a conventional door, and also they are yielded on a pallet with a integrated ramp, make them simple to offload.

beer-selection.comnsiderable installation and operating experience has been got at a swim pool close to Remeha’s headquarters at Apeldoorn in Holland. Remeha on regular basis tests equipment here and also provides heat for free in return. A Gas 220 boiler has been working below for about 18 months and also is the longest-serving together boiler.

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In the UK a Gas 220 boiler has replaced a Gas 210 Ebeer-selection.com agree at the Samuel Whitbread Academy in Shefford, Bedfordshire. Heating engineer Ashley Jones of Spa Gas beer-selection.commments, ‘A lot of thought has obviously gone into the packaging and pallet style to simplify and also speed increase installation.

‘Disbeer-selection.comnnecting the old Gas 210 Ebeer-selection.com Pro, unpacking the new Gas 220 Ace and also then placing it in the tree room took just an hour and a half. I favor the incorporated wheels, which do it easier to manoeuvre the boiler into the final position.’

And Tristan Mitchell, facilities manager with Galliford Try, FM provider for the academy, is additionally taken by the boiler’s size,’ first impressions? It’s therefore beer-selection.commpact!’