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Your Questions Answered How does Piwis heats up your pool? By simply passing filtered pool water through strips of E.P.D.M quality P.V.C Solar Matting that is heated by the sun’s rays. The matting is pre-fitted to P.V.C Manifolds that are connected to each other. The manifolds must be plumbed directly to the filtration plant. The amount of Piwis you require will depend upon the size of your pool. (see chart for details) Where is the best place to install the Piwis Solar System? Piwis can be installed almost anywhere - on the roof of your house, garage, porch, summer house, pergola or directly on the lawn. The only important requirement is a sunny place i.e. south facing to ensure maximum heat absorption. Under normal conditions you need to use only half the surface area of your pool as the collector surface i.e. a 30 x 15’ pool is 450 sqft, therefore approximately 225sqft of Piwis matting is required. For south-east and south-westerly facing positions in cooler climates the Piwis matting should be increased by 35-40%. How would I fix Piwis to a roof? By making a timber framework using wood batons that you can attach the Piwis to. Piwis roof clips are available for this purpose. Always consult a recommended building company if you are in any doubt on how to fix the Piwis to your roof. Alternatively, an adhesive (available from your pool dealer) can be used to secure the matting to either tiled, asphalt or fibreglass roofs. If I fix the Piwis to the roof will my filtration be able to cope? This will depend on how far and high up the Piwis is to be installed. Check with your pool dealer to ascertain your current flow rate as it may be necessary to purchase a separate ‘booster pump’. Can I shorten or cut the Piwis i.e cut an 9m matt into two 4.5m runs? Yes. A ‘short run kit’ (2 x manifolds) is available that enables you to cut the Piwis matting in half and rejoin. How long will it last? Providing that you contain good chemical balance Piwis should last approximately 10 years + What temperature rise should I expect? There are no given measurements for the Piwis Solar System as it relies purely on the energy produced by the sun. On a hot sunny day providing the pool is covered with a solar cover, you can expect a temperature rise of 5-10 deg.F Can I walk on it? No. Piwis is not designed to take heavy foot traffic. Is the matting repairable? Yes. A repair kit is available from your dealer. What happens to the Piwis in the winter? Simply disconnect the plumbing from the Piwis and drain the solar matt to protect from frost damage. Is this a new product in the U.K? No. We have been selling Piwis in the U.K since 1981. Can I add more Piwis matting in the future? Yes. Just connect more manifolds, although you will have to make an alteration to the plumbing. What other costs are there to consider when purchasing Piwis? Allow in your costings for purchase ABS/P.V.C plumbing that will be required to connect the Piwis to the filtration plant. Pipework is normally supplied in 3m or 5m lengths, have your pool dealer give you a price for pipework and fittings. Do not be tempted to use Osma Waste Pipe.
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