Gledhill slimline Unvented cylinder

Discussion in 'Plumbing and Central Heating' started by carlsbergy, 12 Jan 2014.

  1. carlsbergy

    carlsbergy

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    Hi, I has this cylinder fitted a year ago in a flat with economy 7 heating on the tank. The tenant phoned me up today and it appears water has been coming out of the pressure relief valve, and as a result where it drains into 1 1.5 waste pipe, this has warped due to the heat of the discharge water. The water coming out of the taps is vey hot. Any idea please what could cause the water to come out of the pressure relief valve? Thanks
     
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  3. ianmcd

    ianmcd

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    your cylinder has a TPRV (temperature and pressure releif valve) it sounds as though your thermostat is faulty and over heating the water and the TPRV is doing its job
     
  4. carlsbergy

    carlsbergy

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    Thanks, Ian . Would this be covered under the guarantee. The cylinder is 13 months old
     
  5. carlsbergy

    carlsbergy

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    I realise the thermostat may not be expensive, but the waste pipework is behind the cylinder and the cylinder would need to be drained down to access it, would the manufacturer carry out the repair?
     
  6. ianmcd

    ianmcd

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    The thermostat should be accessible it is inside the immersion heater it might be under warranty I dont know what warranty you got ?
     
  7. oldbuffer

    oldbuffer

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    Turn the immersion heater(s) to the cylinder off right away, and remove the fuses so that they cannot be turned on again without deliberate action.

    These cylinders can only legally be fitted by someone with a G3 (Buildings regulations, part G, section 3) qualification. The pipework to discharge the high temperature water from the TPRV valve is best (in my opinion) run in copper, although certain types of plastic pipe (high temperature, not solvent weld) are allowed.

    Lastly, you may find the heaters / thermostats rather more expensive than you expect. Not sure about the Gledhill but most are specific to the manufacturer and priced accordingly.
     
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