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Unvented Cylinder service

Unvented Cylinder service

3 hr
176 British pounds
Guildford Plumbing and Heating Ltd

Service Description

Introduction Servicing an unvented hot water cylinder is essential to ensure its safety, efficiency, and longevity. The service should be carried out by a qualified professional, typically someone certified in unvented hot water systems (holding a G3 qualification in the UK). Below is a detailed specification for servicing: 1. General Requirements • Certification and Compliance: The service engineer must be G3 certified (or equivalent in your region) and ensure compliance with local regulations and manufacturer’s guidelines. • Frequency: Service annually or as per the manufacturer’s recommendations. • Documentation: Record the service in the cylinder’s maintenance log, noting any findings or corrective actions. 2. Inspection and Checks 2.1. Visual Inspection: • Check for signs of leaks, corrosion, or damage to the cylinder, pipework, and insulation. • Inspect the discharge pipework and tundish for obstructions or damage. • Examine the electrical connections, if applicable, for wear or damage. 2.2. Pressure Relief and Safety Valves: • Test the temperature and pressure relief valve (T&PRV) to ensure proper operation. • Test the pressure-reducing valve (PRV) and expansion valve, ensuring they function correctly. 2.3. Expansion Vessel: • Check the pre-charge pressure of the expansion vessel using a suitable pressure gauge. • Repressurize the vessel if required, following the manufacturer’s specifications. 2.4. Strainer and Filters: • Clean or replace strainers and inline filters to ensure an unobstructed flow of water. 2.5. Temperature Settings: • Verify that the thermostat and cylinder temperature are set within safe limits (typically 60–65°C to prevent legionella). 2.6. Immersion Heater (if fitted): • Inspect and test the immersion heater for proper operation. • Check for limescale buildup and descale if necessary. 2.7. Tundish and Discharge Pipework: • Ensure the tundish is free of blockages and that the discharge pipe is installed to the correct specifications. • Verify that the discharge pipe terminates safely outside the property. 3. Performance Testing 3.1. System Pressure: • Check the standing and operating pressure of the system. • Verify that the pressure remains stable during operation. 3.2. Hot Water Performance: • Confirm that the system delivers hot water at the appropriate temperature and flow rate. 3.3. Safety Cut-Outs: • Test safety mechanisms, including thermal cut-out devices, to ensure they operate as designed. 4. Maintenance 4.1. Descal


Contact Details

  • Guildford Plumbing & Heating Ltd, Worplesdon, Guildford, UK

    + 44 1483235549

    info@guildford-plumbing.com


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