13 May 2025
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Advertorial
Denbighshire is one of the most picturesque counties in the whole of the UK with the Vale of Clywd a designated Area of Outstanding Natural Beauty and St Asaph cathedral, which is acknowledged to be the oldest of its kind in Wales with its origins dating back 1400 years.
With this background of pedigree and culture the county council has embraced NetZero and strives to utilse all technologies to make as many of its properties as fuel efficient as possible.
The Denbighshire Energy Team are continuing work to drive down energy usage and costs across its expansive and nuanced estate. The Team has managed projects across Council buildings, including schools and care homes to improve building energy efficiency and reduce emissions and usage costs over the longer term.
At the Council owned and operated Cysgod Y Gaer Residential Home for 30 occupants the fuel consumption for the hot water heating system has been slashed from 750kWh to just 200kWh per day – with the support of Rinnai products and design support services.
“This is a care home where we recently removed two hot water cylinders that were heated by the main heating boilers. We replaced them with high efficiency Rinnai water heaters that only heat water on demand. We can see the gas consumption has decreased from an average daily consumption of 750kWh down to 200kWh per day’ said a manager from the Denbighshire Energy Team.
The Rinnai units installed are models from the N Series range. The Rinnai N Series continuous flow hot water heater range offers a more compact, enhanced combustion design that allows for easier installation, superior operational performance as well as ease of serviceability all points that have assisted in reducing overall cost to the council.
The Rinnai N Series is the first continuous flow hot water heating unit manufactured with stainless steel heat exchangers - this gives a greatly extended working life at optimum performance to each of the four models in the range.
The four models are:
the N1600i giving 954 litres per hour (at 50 degrees)
the N1600e (external) also giving 954 litres per hour (at 50 degrees).
the N1300i giving 775 litres per hour and
the N1300e also giving 775 litres per hours of temperature controlled hot water at 50 degrees. The two 1600s have load profiles of XXL and are water efficiency class A rated, while the 1300s are load profile XL and are also water efficiency class A rated.
All the range is also low-NOx (Less than 26ppm meaning they gain additional points under BREEAM) and the futureproofed continuous flow water heater utilises Rinnai’s patented advanced burner technology with a 13-1 turn down ratio – the largest on the market combined with 96% efficiency rating. Integral controls on the units enable the water heater to achieve high efficiencies because of advanced burner control and high modulation ranges. These features ensure that the system optimises gas usage meaning that the council can squeeze every ounce of energy out of the water heating process and reduce energy usage by 73%.
This wide range of modulation means that energy usage is completely optimised as the water heater through smart inbuilt controls will only heat the water to the temperature required thus preserving energy.
Rinnai is a true global player in the manufacture of domestic and commercial appliances and operates in almost 50 countries. Rinnai’s mission is to “create a healthier way of living” through advanced combustion technologies and water control technologies. Therefore, Rinnai has created its H3 initiative. This consists for hydrogen ready and BioLPG ready water heaters and boilers, Hybrid solar thermal and heat pump solutions and LOW-GWP heat pumps.
For cost effective energy and carbon savings and FREE design support with Rinnai, contact a Rinnai expert today to find out more https://www.rinnai-uk.co.uk/contact-us/request-callback
