If you don't have a Magnaclean/Sentinel/Fernox magnetic filter installed, I'd strongly recommend you ask your plumber to do so. The TF1 Omega Filter out performs other filters of its size by collecting significant quantities of system contaminants, and competes with many larger filters thanks to the cleverly designed internal mechanisms of the filter.

whats your current choice/preference of power flushing chemicals and inhibitor for systems with and without aluminium. Also please give your opinions on any other chemicals you have tried if you can. Look on Youtube, might find a better video, also adding Sentinel X900 is a good idea after you have cleaned out the filter. An additional or repeat dose of Cleaner F3 may be necessary in some cases. Drain and flush thoroughly, at least twice, until the water runs clear. When using Cleaner F3 with a powerflushing machine, cleaning should be completed within an hour. Use dynamic flushing with plain water until the water is clear. Refill the system adding Fernox Protector F1 for long term protection against corrosion and limescale. In single feed indirect cylinders, e.g.’Primatic’or similar, potable water chemicals must be used. PF Community Forums General Off-Topic Chat For Sale & Wanted Make a suggestion about the forum in general Fernox Powerflushing Cleaner F5 is an effective, PH neutral cleaner designed for removing sludge, scale and debris in central heating systems. A one litre container is enough to clean an average sized system. BenefitsWhat you have done is the absolute classic of adding a cleanser into a system and leaving it in too long. the best position is certainly on the return pipe just before the boiler, what you are aiming for is that all the water has to pass through the filter before it can go into the boiler, to minimise the chance of particles going in there and getting lodged. However no filter collects 100% at first pass. It may be that a professional plumber, with more practice and better able to change the pipe layout, may be willing to spend the time making a better route. it can go on the return pipe, to the boiler, so it has the chance to catch detritus before it enters the boiler, with no other components (radiators or cylinder) between the filter and the boiler. That's why it shouldn't go on the flow pipe. A single dose of Cleaner F3 treats a larger sized property with a heating system of 130 litres, up to 16 radiators, or 250 sqm of underfloor heating. Additional/repeat applications of Cleaner F3 may be necessary for larger systems, or if systems are heavily sludged. Alternatively, Power Cleaner F8 may be used for heavily sludged systems. With the system filled and the powerflush unit running, circulate and reverse the flow direction every one to two minutes.

With the Fernox F5 where is the sludge going to end up? Exactly! You need to rid the system of the 'sludge' not push it around the system! Connect the mains water supply, overflow and dump discharge pipes, ensuring that all isolating valves are I've only got a few days to run the system with cleanser in (X400 or whichever) because I'm having a new boiler fitted on 4th September. The X400 (or whichever) won't arrive til Tuesday 29th, hence the plan to run the old boiler for 6 one-hour bursts. Which cleaner is easiest and safest to use that i can just run, drain and then refill. oh and which inhibitor should I use? I don't have much room to fit it in near the boiler - presumably it could go on one of the 22mm pipes in the airing cupboard instead?The powerflushing machine can be connected to the system using TF1 Flushing Adapters which can be used where a Fernox TF1 Filter is installed. Alternatively, it may be connected across the flow and return pipes at the boiler (which is particularly useful when replacing a boiler), or you may also connect the machine across the circulator pump using a Powerflow Pump Head Adapter. Finally, you may connect the machine across a radiator, however this option should only be used if no alternative connection point is available.