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Code: SEN-X3001L

SEN-X3001L | Sentinel X300 New System Cleaner 1Litre

For the removal of flux grease, oil and installation debris


Specifically designed for cleaning new central heating systems, Sentinel X300 Cleaner for New Systems is a powerful, heavy-duty cleaner for the removal of installation debris and grease. This prepares the system for the addition of an inhibitor, which will protect the system components and prolong their effective life.


  • Cleans new heating systems (up to 6 months old)
  • Powerful, heavy duty cleaning action
  • Removes installation debris
  • Washes off manufacturing greases
  • Eliminates corrosive flux residue
  • Prevents harmful copper deposits being left in the system
  • Prepares system for protection with X100 Inhibitor

Product Data Sheet

Safety Data Sheet

Contamination of a new central heating system is common, with metal swarf, grits and sands, and excessive flux being introduced during the installation process. In addition to this, layers of grease or oil will be present on new components such as on the internal faces of radiators. The presence of this debris and these residues inside the system can lead to rapid pin-hole corrosion of the radiators.

Best practice, derived from documentation such as the UK Building Regulations Part L Domestic Heating Compliance Guide, is that a central heating system should be thoroughly cleaned and flushed out before the installation of the new boiler. We advise that systems should be cleaned in accordance with BS 7593

Using X300 Cleaner for New Systems:
1 litre of Sentinel X300 Cleaner for New Systems is sufficient to treat a typical domestic system of up to 10 radiators. If the system is new, this should be at the time it is first filled. Sentinel X300 Cleaner for New Systems should be circulated with all valves open for a minimum period of one hour. Warming the water will aid the process.

Open Systems: Dose via F&E cistern, via a by-pass feeder or use a Sentinel Dosing Vessel.

Sealed Systems: If the system is empty, add to any convenient point before filling. If full, use a Sentinel Dosing Vessel to inject via the filling loop or other access point.

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