Solar Thermal Plumbing Toolkit

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Before you start any serious plumbing work, make sure you have the right tools. Your system schematic (you did create one, didn't you?) will tell you how much piping you need, as well as all the fittings and other consumables required.

You will also need:

  • Pipe cutter or hacksaw. A pipe cutter is preferred, as it's made for the job and requires a lot less effort (and skill) to obtain good results. It's a sound investment.
  • Soldering torch. The easiest torches have a built-in igniter and work on propane, Mapp or acetylene gas. Unless you know what you're doing, stick with propane – it burns cooler so, although you will spend more time heating pipes, there's much less risk of overheating.
  • Solder. Make sure you use a lead-free solder. Although you are unlikely to drink the water in the solar loop, it's never a good idea to bring lead into your home. Avoid paste solders or any that come pre-mixed with flux. Choose either a 95% or 100% tin option, preferably the former as it has 5% antimony and is slightly stronger.
  • Flux. Choose one that is water-soluble – it will make cleaning the inside of the pipes a lot easier, as simple flushing will do the job.
  • Insulated heat mat. A small sheet of metal will do the job as well.
  • Wire brush and grit cloth. Do not use emery cloth, unless you are sure it is oil-free. Oil may degrade pipe joints.
  • Measuring tape and pencil or marker.
  • Wet rag.
  • Gloves.

When you're sure you have everything you need, start the installation at one end of the loop, either top or bottom, and work systematically around. Make sure you follow your planned route, fixing the fittings where you have planned them. And take your time – good plumbing can last 100 years, so it's worth taking a few extra hours to get it as close to perfect as possible!