Rinnai fits into Jigsaw’s renewables offering
Following good experience with solar thermal combined with Rinnai’s condensing water heaters in its own premises, Richard Percival of Jigsaw FM urges that anyone using hot water should look at solar-thermal water heating with a Rinnai continuous-flow condensing gas water heater as a booster.
He is a director of the company, which has been involved in many solar-thermal projects since its inception five years ago. The relationship with Rinnai is comparatively recent. ‘We first came across Rinnai just six months ago when we were introduced to its condensing range. It quickly became clear that these units are the ideal energy-efficient-temperature booster for a solar-thermal installation.
‘Basically, we feed the thermal store from the solar panels and then direct the preheated water through the Rinnai, in this case the Infinity HDC 1200i, which will only fire if the water from the store is not up to temperature. We have already installed this system at six different sites in a short space of time.
Jigsaw’s own installation is monitored for flow, temperature and water consumption so potential customers can be given an breakdown of the sort of savings they can expect.
The best performing installation by Jigsaw so far is a site in Chester, where the new solar system has reduced gas consumption by 70%. It replaced a 30-year-old boiler system that was extremely inefficient. Richard Percival says, ‘The solar-thermal/Rinnai system went in with minimum fuss, and the customer is still using the same amount of hot water but at a third of the previous cost.’
