www.heatingandventilating.net
DOMESTIC UFH
Sustainable solutions for Cornish development
A South-west based specialist building services contractor has put together a full package of renewable and underfloor heating products, from the OMNIE range, to meet the energy and comfort ambitions for a new housing development on the Cornish coast
T
he nine properties at Bedruthan Steps, a few miles from Padstow, are being constructed by regional builder, Karn Havos Developments, while Sadler and Bourne from Liskard is the long-term supplier of OMNIE heating products, undertaking a full design and installation package for the heating, hot water and heat recovery ventilation systems. While the company has experience of installing OMNIE’s ground source heat pumps on other sites in Devon and beyond, site conditions at Bedruthan led the firm to propose the use of the compact, high performance LWD50 air source heat pumps along with 50mm Foilboard Floating panels over the concrete sub- floors, connected via the manufacturer’s Precision-Flo manifolds. The three-bedroom dwellings’ inverted layout requires just a three-port manifold upstairs where the lounge, dining area and kitchen are located to maximise the stunning views, while an eight-port version downstairs serves the three bedrooms, two en-suites, family bathroom and utility room. A 300-litre storage vessel is kept topped up with hot water by the LWD50 air source heat pump to serve the multiple outlets, while one of OMNIE’s fully designed mechanical ventilation and heat recovery systems using the widely specified ComfoQ 350 HR units extracts moist air from the kitchen and bathrooms, supplying fresh warm air to the bedrooms and living areas. Combined with the well insulated timber frame construction for the homes, the integrated OMNIE package and advanced electronic control systems will enable residents to
maintain a comfortable living environment at a low cost, even when the worst of the Atlantic storms are blowing outside. Managing director, Carl Sadler commented: “We cover the whole of the South-West doing plumbing, heating and renewable installation projects for domestic and commercial customers and have been partnering with OMNIE for 10 years now – originally being a user of its underfloor heating systems, before fitting the company’s air and ground source heat pumps when they launched a couple of years later. In the case of the Bedruthan development, we got involved as the building services supplier early on in the planning phase and designed the full package in conjunction with OMNIE’s technical consultants. Bringing gas onto the site was never considered so the LWD50 air source heat pump was ideal and we specified Foilboard Floating for the system’s excellent energy transfer performance.
Importantly for our work, we do not need to be MCS certificated to offer clients the OMNIE heat pumps, as the company takes care of all the certification matters and carries out the final commissioning – enabling the client to apply for the RHI payments.”
OMNIE’s LWD air source heat pumps are produced by the highly respected German manufacturer, Alpha-InnoTec with the 5 to 9 kW output models not only being MCS approved but also offering high efficiency and very quiet operation, as well as a long low maintenance working life.
CIRCOFLO KITS PROVE BEST FOR BARN CONVERSION A
regular customer of Circoflo has made use of its bespoke design service and custom- sized underfloor heating solution to carry
out a challenging contract, involving the installation of an air source heat pump, during the conversion of a traditional barn structure in an off-gas area of the Bedfordshire countryside. Significantly, Air Install offered a high performance renewable energy solution to the owner of the rural property at Bendish near Luton, as an economic alternative to the oil-fired boiler package originally under consideration. The Grade II listed former agricultural building and
adjoining structures have been developed into offices, meeting rooms and ancillary spaces for the client’s business, while the complex also includes a gym, yoga suite and kitchen for his private use. Air Install’s engineers have now completed the installation of the ClipRail and FloFloor underfloor heating, supplied
as a bespoke bill of materials complete with manifolds and controls, throughout the ground and upper floors and using layout drawings supplied by Circoflo. Steve Kirby, a director of Air Install,
says: “As a company, we operate right across the country, though a lot of our work is in the South East, normally installing underfloor heating systems with our heat pumps and always going to Circoflo for them. We get good technical advice from Brendan Hourican the national sales manager and in this case he recommended the FloFloor system for the yoga suite on the upper level of the barn because the integral diffuser would work well with the 8mm engineered oak flooring which is to be laid over it.”
All six of the Circoflo systems available use the same 12mm pipe at 133mm centres, available in lengths of 50, 70 or 90 metres and a choice of
two, three or four-port mini-manifolds to reduce congestion in the floor, while also minimising depth of construction. In this case three manifolds were required across the ground floor layout, with a further one installed to serve the yoga suite. The nine separate zones vary in length from 29m up to 70m, with design floor temperatures in the range from 25 to 28.5˚C. Circoflo’s ClipRail is the easy way to install pipes into a screeded floor or where price is critical they also offer a simple staple system. FloFloor facilitates the installation of floating floors across various substrates. CircoBoard panels are used for fitting flush on brackets between joists or across battens, while LowDeck offers the ultra low floor build up at only 15mm. The TileDeck system offers a retrofit solution for both tiled and vinyl finished floors and completes the Circoflo offering.
www.heatingandventilating.net
May 2020
29
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