Two years ago i cleaned my heating system with fernox3 into the header tank like it said on the bottle, i did the same thing this year but after the last flush and refill there is a blue tint to the the hot water. Can anyone tell me why this? Also i bought a bottle of Fernox1 Inhibitor and it says put in expansion tank, why one in header and other in expansion?
Thank you for reply, No blue in the Fernox F3 cleaner,its a amber color, and could you explain about Header and Expasion? i thought they did different things. thanks again
Header and expansion are different things. The header tank is not only a storage vessel for keeping a head of water in a circuit (it can also be referred to as a cistern) but it also doubles as an expansion tank to cope with the expanding water.
Maybe you are confusing the terminology with an expansion vessel which is basically a cylinder containing a diaphragm and has the sole purpose of maintaining an even pressure in a system regardless of water state.
I have no suggestions regarding the coloured water other than to examine the hot water header tank to ensure no debris or other matter has fallen in and contaminated the water
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