Cylinders

Main Unvented Cylinder

Manufactured in the UK, the Main Unvented Hot Water Cylinder is easy to install, with front access to controls and connections. The coil-in-coil heat exchanger ensures rapid heat recovery and 50mm of factory injected polyurethane foam ensures that heat loss and running costs are kept to a minimum. 

 

The inner cylinder is made from high grade stainless steel for a long product life with low maintenance. The Main Cylinder, together with a Main Eco Compact System boiler or Main Eco Elite System boiler, provides a complete solution for homes with a high demand for hot water.  

 

Key features:  

  • One year parts and labour warranty plus 25-year warranty on stainless steel inner vessel†  
  • 120, 150, 170, 210, 250 and 300 litre capacity – direct and indirect types
  • Indirect heating coil is factory fitted with an electric immersion heater as back up
  • Coil-in-coil heat exchanger
  • Incoloy 800 alloy sheathed elements
  • KIWA approved  
  • 50mm of polyurethane foam insulation