Three Bedroom Terrace
London, NW9Mr & Mrs Diamond requested a full heating system overhaul for their three bedroom Victorian terrace. They were seeking a solution which would be affordable, practical and incorporate a renewable technology, an A-rated gas boiler and high performance hot water system.
It was a wise decision to replace the existing heating system as it consisted of two separate gas boilers; one for the hot water, the other for the central heating. It was uneconomical, inefficient and didn’t meet their needs. Taking the size of the family into consideration we were able to calculate their daily demand of hot water, which was around 200 litres and we designed the new heating system to ensure it would supply this demand.A proposal to replace and relocate the entire system into the loft space was agreed with our client.
A Glow Worm Clearly Solar package was chosen based on the fantastic system efficiency, ease of installation and affordable cost. A Glow Worm Ultracom 30SXi system boiler was chosen along with a Glow Worm 200 litre unvented twin coil cylinder and replacement radiators throughout. Two SRV2.3 flat plate collectors were installed on-roof (5m² collector area) directly above the boiler and cylinder to limit the installation pipe-work and improve overall efficiency. New hot, cold and heating pipe-work was run from the loft down into the property to ensure the system operated at the best levels of performance.
The main limitations for us were the small amount of loft space available. The whole installation layout was planned beforehand to ensure the space available was used correctly.The Glow Worm Fluropro solar controller was installed in the hallway and was configured so it controlled the gas boiler as the auxiliary heat source. This means the solar panels always get priority and when there isn’t enough solar energy available the Fluropro controller will fire the gas boiler to make up the shortfall in energy.
Preformance and estimated Fuel Saving
The solar thermal hot water system installed will contribute an estimated 2110.00kWh of energy towards the hot water heating requirement of the household; that equates to a saving of 228m³ of gas. The domestic hot water solar fraction is approximately 52%. This equates to a CO2 emissions saving of approx 480kg/year.
