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Unvented Cylinder Information

 
 

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Building regulations now apply every time you change a boiler or hot water vessel!

We recommend that you check all your heating controls to maximise the overall efficiency of your complete system.

Effective control does bring further savings.

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Thermsaver Stainless Steel Indirect Unvented Hot Water Cylinder - With Integral Pressure Vessel

The Thermsaver internal indirect stainless steel unvented cylinder has the expansion vessel/space inside the cylinder which saves on installation time. The External stainless steel unvented cylinder has a separate expansion vessel which is fitted onto the pipe work by the cylinder. The indirect unvented cylinder is heated from an indirect source (electric, oil or gas boiler) through the coil fitted into the bottom of the cylinder which transfers the heat produced by the boiler to the water in the cylinder, giving excellent hot water recovery performance when in use. When connected to the mains pressure cold water supply it will give you equal high pressure water at your hot and cold outlets

This diagram of the Thermsaver Internal Stainless indirect unvented cylinder is for illustration purposes only. Thermsaver make every effort to ensure that the information given on this page is accurate, however this information may change as a result of continuing product research and development.

The Thermsaver Internal stainless steel unvented cylinder has an integrated expansion vessel.

The Thermsaver External stainless steel unvented cylinder has a separate expansion vessel which is fitted on to the pipe work by the cylinder.

Indirect unvented cylinder diagram

Description

P&T Pressure and temperature relief valve 1/2 BSP female
OT Outlet 22mm plain pipe
IM Immersion heater
CF,CR Coil flow/return 22mm plain pipe
IN Inlet 22mm plain pipe
TS Twin stat

Supplied Components

  • Inlet Control Group:
    • pressure reducing valve set
    • single check valve
    • filter
    • expansion valve
  • Cylinder Thermostat
  • Energy Cutout Valve
  • Tundish
  • Backup 3kW Immersion Heater
Indirect unvented cylinder cutaway diagram

The pressure reducing valve, which reduces the pressure to 3.0 bar, is factory set, as is the expansion valve which is pre-set to 5.0 bar.

Heating Performance

Model /litres 125 150 170 200 250 300
Re-Heat Time After 70% Draw Off /mins 19.9 23.7 22.4 27.5 33.8 45.3
Time to Heat from Cold to 65°C /mins 25.0 29.6 28.2 34.1 42.6 50.4

Please use our Enquiry Form if you have any unanswered questions or for any further information you may require.

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