One bottle of Fernox Protector F1 or Protector + Filter Fluid will treat a typical system of ten single panel radiators – double panel radiators, count as two radiators.
If the calculated dose rate is in between pack sizes, dose to the higher figure.
Normally a treatment will last the life of the system but an annual check to determine whether further dosing is necessary is recommended. If the system is drained, it will need to be re-treated with a further full dose of Protector. You can check if the system is properly dosed using a Fernox Protector Test Kit.
Yes, all Fernox internal leak sealers, such as Fernox Leak Sealer F4, are safe for use with combination and other low water content boilers. They will not block valves or vents. Leak Sealer F4 Express is recommended for all pressurised systems as this can be added in 30 seconds via a radiator, filling loop or Fernox TF1 Filter, without the
No. Whilst Power Cleaner F8 is formulated with citric acid, this is neutralised in-situ to form the neutral citrate species which has such an effective cleaning action.
