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Unvented cylinders should be serviced every 12 months!

Unvented water heaters are safe to use if installed and maintained correctly. They incorporate three levels of safety.

~ Thermostats that prevent the water being heated above 60 – 65˚

~ High level cut-outs that operate when water reaches 80 – 85˚
  because the thermostat has failed.

~ Temperature relief valve, which operates if both of the other
  safety features fail and the water reaches 90 – 95˚.

How will your unvented system be serviced?
The servicing of an unvented hot water storage system will include the following:

• Inspecting for signs of wear or damage

• Checking to see that the correct manufacturers parts are fitted

• Testing the temperature and pressure relief valves

• Removing the line strainer and cleaning the filter

• Checking the pressure of the expansion vessel

• Setting the correct incoming water pressure

• Drain down and check the immersions & sacrificial annodes