Bosch Commercial Heating Solutions

Heat Merchants are now supplying Bosch Commercial Heating Solutions

Partnership Announcement

Partnership Announcement

Alan Hogan, Managing Director Heat Merchants Group pictured with Phil Divall, National Commercial Manager Bosch Commercial & Industrial

Heat Merchants have been developing their product portfolio in recent years and the latest addition their commercial offering is the extensive Bosch commercial heating range. Since being founded in 1895, Bosch Commercial have completed over 115,000 projects in more than 140 countries and are now established as one of the world’s leading manufacturers of heating products specialising in providing complete system solutions for the commercial and industrial heating sectors with individual outputs from 50kW to 38,000kW. Heat Merchants can now offer the full range of commercial products in addition to technical support and specification service.

‘Bosch Commercial is a market leading brand around the world and we are delighted to have been selected as supply partner for their extensive commercial heating range. Our Technical Design team are available to assist heating engineers with specification and product selection for any commercial application’ said Alan Hogan, Managing Director Heat Merchants Group.

One of the core ranges offered by Heat Merchants is the Bosch GB162 which is market-leading range of gas-fired boilers with 50, 65, 80 and 100kW outputs. The 50kW is a recent introduction which offers even more installation flexibility for heating engineers and bridges the gap between domestic boilers and the current light commercial range. The GB162 50kW boiler is suited to both large-scale domestic installations and light commercial applications. With net efficiencies of up to 110% and NOx emissions of less than 40mg/kWh, the GB162 range provides clean, low-carbon heating and hot water and can also be installed in a cascade arrangement up to 800kW with the ability to modulate down to as little as 2.5 per cent of the total output.

Geoff Hobbs, Bosch Commercial Business Development Director, commented: “By adding a 50kW gas-fired boiler to our portfolio, we are making a commitment to those installers who are accustomed to working with large domestic or smaller commercial applications. The GB162 is already renowned for being a very simple boiler to install, and the 50kW model gives extra flexibility to the range. “The advantage of the new GB162 is that across both the Worcester and Bosch brands we can now truly offer a boiler to meet any domestic or commercial requirement.”

ErP Directive and the Commercial Market

GB162 Multi Boiler Cascade System

GB162 Multi Boiler Cascade System

Boilers can be connected in-line or back to back using the Bosch Cascade Kits to achieve an overall condensing output of up to 800kW

Condensing boilers may have been mandatory in the domestic market for over a decade, but it is only recently that the introduction of the Energy related Products (ErP) Directive has seen the commercial sector follow suit. Under the requirements of the ErP Directive, a new commercial boiler with an output of between 70 and 400kW now has to be of a condensing type. Because of the size of the market for this size of boiler, the industry has a lot of work to do in order to make sure the transition from the more traditional cast iron boilers to condensing models is a smooth one.

Early estimates suggest that around 70 per cent of commercial boilers sold each year will now be of the wall-hung variety, whereby systems comprising of multiple smaller output boilers in a cascade arrangement will become more common. This will of course bring with it significant efficiency gains – not only because these boilers operate more efficiently by their nature, but also because a cascade has the ability to modulate to a small percentage of its total output. This consequently results in year-round efficiency according to seasonal demand, and each of the boilers effectively sharing the material amounts of wear and tear to prolong lifespan.

One of the areas where the market will be challenged is in respect of oil-fired boilers, as the overwhelming majority of those sold at present are of a cast iron type. Because so few oil boilers that meet the efficiency requirements of ErP are available, we’re anticipating a significant shift towards LPG, as low sulphur oil, which can condense and meet ErP, is only available in limited capacities.

One of the main objectives now with the move to ErP compliance not only centres around the boiler changeover but also the protection of the new boiler from the potentially harmful deposits that may be in circulation within an older system. While emptying, treating, and re-filling of the system will take place as a matter of course, old pipework is susceptible to regular build-up of particulate which has the potential to hinder or harm boiler performance. In instances where it is not practical to replace the existing pipework, a plate heat exchanger should also be installed to keep the primary boiler water separate from the secondary heating circuit and avoid cross contamination.

ErP requirements will be by no means alien to the vast majority of installers, but the need to follow condensing boiler best practice will grow in importance as the shift away from cast iron gathers pace. Ultimately, as a regulation set by the European Union, the ErP Directive is designed to drive improvements in the efficiency and performance of heating and hot water products.

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