Thank you very much. 1) Do you happen to know what PH level the Fernox F1 will bring the system water to? 2) How long will the Fernox F1 maintain this PH level? 3) Is the Fernox F1 safe to use with an indirect hot water heater incase of domestic water contamination?
Quote: Originally Posted by JohnDS Nothing??? New Systems Fernox Cleaner F3 or Cleaner F5 should be added before commissioning the system. Simply circulate Fernox Cleaner F3 or Cleaner F5 for at least one hour when the boiler is switched on, after which the system should be drained and thoroughly flushed until the water runs clear. Existing Systems Ideally the system should be powerflushed to remove any existing treatment and contaminant. Fernox Cleaner F3 or Cleaner F5 should be added to system water and circulated hot for at least one hour. After which the system must be drained and flushed until the water runs clear. The cleaning time can be extended to up to one week for hardened iron oxides and limescale. For both new and existing systems, a Fernox TDS meter should be used to ensure efficient flushing by comparing the readings of the system water and mains water. The system is thoroughly flushed if the readings are within 10% of each other. Protecting new and existing systems In accordance with Part L of the Building Regulations, after cleaning with Fernox Cleaner F3 or Cleaner F5, add Fernox Protector F1 with the final fill water for long-term protection against corrosion and limescale. All Fernox Protector F1 and MB-1 products are compatible with mixed metal systems, including aluminum as well as plastic pipes. For continued protection, check Protector levels annually using the Fernox Protector Test Kit or 60 sec Protector Check Kit and top up the level as required. Protecting against mineral oil contamination Hot water central heating systems can become contaminated by the mineral oils used to protect steel components i.e. radiators from corrosion during the manufacturing process and before installation. If the oil is not removed, rubber parts within thermostatic radiator valves, motorized valves and other fittings can become swollen, resulting in component failure. Oil can also cause pump seizure where the bearings become fouled. New installations The risk of failures can be eliminated by pre-commission system cleaning using Fernox Cleaner F3. Cleaning should be undertaken in accordance with the recommendations set out in BS7593:2006 . Commercial low temperature hot water and chilled water systems can be cleaned using Fernox HVAC Cleaner F3 . After which the system should be protected using F1 Protector for domestic or HVAC Protector F1 for commercial systems. Existing systems Clean the system using either Cleaner F3 or Powerflushing Cleaner F5 , drain and thoroughly flush before dosing with a Fernox Protector F1. Where failures have occurred, the failed components should be replaced together with all similar components, as these are also likely to have been affected by the mineral oil.
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