Rinnai, the UK’s leading manufacturer of the ErP A-rated Infinity range of continuous flow condensing gas fired water heaters, delivers the most energy efficient range of low-NOx hot water heating units currently available to the UK end user.

The company’s low-NOx Infinity HDC 1600e external wall mounted unit (together with the interior HDC 1600i version) utilises Rinnai’s patented pre-mix burner technology with a 14-1 turn down ratio – the largest on the market – of 58.4kw-4.05kw and is extremely quiet in operation.

Integral controls on the units enable the water heater to achieve high efficiencies whether locally or integrated into a building management system. In reducing Legionella proliferation, Rinnai has developed additional ‘SMART’ controls for secondary return DHW systems in the form of an advanced temperature control system which allows for safe running of water at 42°C core temperature during the day and 60°C when a building is closed. By the time the building reopens, core temperature is 42°C for safe use.

Another Rinnai innovation addresses an age-old industry problem with hot water delivery – lime scale build-up. The company’s integrated scale control system is an innovative solution and comes in the form of an LC (lime check) code on the display of the controller.The system helps to ensure the performance and efficiency of Rinnai’s 1600, and, all of its continuous flow water heaters installed in hard water areas. Almost all water-fed appliances, including plate heat exchangers, boilers and water heaters will, over time accumulate scale deposits in hard water areas.

Ultimately, ongoing use with hard water may shorten the lifespan of conventional water heating appliances and systems. To safeguard against this Rinnai units continually self-monitor for lime scale deposits around the heat exchanger. If a lime scale build-up is identified, a message is sent to the built-in interface panel on the front of the appliance.  The message is displayed as ‘LC’, which alerts the end user  to contact a Rinnai service agent to perform a lime scale flush to clear the potentially harmful deposits.  This avoids and eliminates the adverse effects associated with lime scale build up, including lower energy efficiencies and potential product de-generation.

The industry uptake on Rinnai’s series of low-NOx high efficiency products is that continuous flow heater systems are proven to be more energy efficient than conventional storage systems and are increasingly the experts’ preferred method of hot water provision. Rinnai units easily cater for any size projects that need high volumes of water at intermittent times of day.

The Rinnai Infinity 1600e/i offers condensing technology with up to 107% gross efficiency, ultra-low-NOx of less than 20 ppm, a widely expansive modulation range of 54kW-4kW and high flow rates of 37/ltr/min. Add to these benefits are the peace of mind of an extended warranty, a top A-rating exceeding the demands of  eco-labelling legislation, the flexibility of external wall mounting and delivery to site with all relevant accessories and the knowledge that the HDC1600 is future-proofed against future regulatory and legislative changes.

For more information on the RINNAI product range visit

www.rinnaiuk.com