Easy way to meet increasing demand for hot water

With many homes having multiple bathrooms, some combi boilers may struggle to respond to frequent demands for hot water. However, the installation of a hot water recirculation pump can help to boost response and also save on energy, as Sean Keleher from Navien UK explains.

Sean Keleher National technical manager, Navien

new NaviCirc device means installers can still deliver consistently hot water to larger homes with multiple bathrooms, and give precious space back to the customer by removing the bulky cylinder. NaviCirc is a simple plumbing device designed for installation at the furtherest accessible fi xture away from the boiler. Working in conjunction with our industry leading Combi Crossover range, such as the NCB700 ON, NaviCirc uses a thermostatic valve to measure the temperature of the water flowing through the device.

Once the water has reached 35°C, the NaviCirc valve will block circulation, cutting off the loop to ensure hot water is accessible throughout the pipeline. The pump inside the NCB700 ON recognises this and stops circulating the domestic hot water until a hot water outlet is used, providing hot water in a matter of seconds.

Being able to remove the cylinder allows homeowners to reclaim valuable space in their home while at the same time giving them access to rapid and consistently hot water. The domestic hot water recirculation pump within the boiler combined with NaviCirc also means they are not paying to heat water within their system when it’s not in use and helps to reduce their heating bills.

The console on the front of the NCB700 ON also allows you to set specific times of day homeowners are likely to benefit from hot water recirculation, which further helps to reduce extra energy costs for the bill payer.

The key benefits

Once a domestic hot water recirculation system is up and running, homeowners will notice the significant benefits immediately, including boosted performance, time efficiency to match their lifestyle and a significant reduction in water usage, which is more environmentally friendly. What’s more, customers no longer need to wait for hot water cylinders to refi ll once all the water has been used.

More bathrooms require more hot water, and statistically every household in the UK uses an average of 350 litres of water each day. However, a hot water recirculation system can significantly reduce this figure, helping households waste less water and keep energy bills to a minimum. For the bill payer this could be mean substantial savings, as approximately 53% of an average annual combined energy bill is a result of heating water for showers, baths and hot water taps.

The NCB700 ON features an outstanding turndown ratio of 15:1, is 20% hydrogen blend ready, 94% efficient and also achieves an industry-leading ErP A+ energy rating when used with a Navien Smart Plus controller. This makes it one of the most energy efficient products on the market and an attractive option for those who are looking to be more mindful of their consumption habits.

Further information

For more information about NCB ON and NaviCirc or to discover the full range of products available from Navien, please visit the dedicated space for installers on the Navien website by using the link below:

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