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yeah, I can believe that. did pressurize the system to 2.5bar to see if any joy with that as well. my only concern is will fx2 etc remove blockage or i'm still in the same position. customer has expresed his interest in new boiler, but I would have liked to have removed the blockage on...

3 x bottles of x800 plus about 3 weeks prior to PF we put some fernox cleaner into the system to run for a bit (as and when the boiler could) are you thinking something a bit more acidic?? did spend a good 1-2 hours just on the boiler Hex when PF

brand new pump - DAB 65. more than enough for the system. never known a Hex to block as much as this though - Although deposits removed from the system on the PF were more like shingle!!!

flow return isolators within the boiler? No haven't checked - but if all works ok with the kamco machine connected then I presummed boiler pipework is fine. boiler was heavily cotaminated with debris when flushed - and the boiler did struggle to work with the pf machine, but when we reversed...

with the pump I meant - new pump i had on the van, left in for the day, still no joy. is there a filter in the boiler ??????

theres about a 35'c temp difference between the flow and return at the top of the boiler when the boiler starts up into high flame. Struggles to heat up the return at all going back to the boiler. New bypass valve fitted (temp doesn't change even if this is fully open) when powerflushing we...

no, banging only started within the last few weeks

having a few problems with this boiler. boiler is 4 years old (installer unknown) and fitted onto existing back boiler system. Am having problems with the boiler making some horrendous banging noises! when working. boiler cuts out with A&B illuminated. So, I told customer - sounds...

is the radiator in a loft conversion? is it above the F&E tank?

problem lies with the changing of the radiator from your bathroom fitter. air in primary circuit. shut down all your rads then fire boiler up for a few minutes, might clear it.

i know an old boy in his 80's that keeps himself busy doing odd jobs around a mobile park home. in his younger days he worked for gas/water board laying new pipes. they use to use a tool to squeeze off pipe upto 6 inch! he has his own squeeze off tool, similar to the op link, which i've used...

yes - the pump is definately working. i have only ever installed one other ufh heating system - uponor, where the manifold came complete with pump and relevant connections - so, my knowledge on this subject is very poor. The reason i believe for changing the pipe work is to incorporate a mixing...

ah - i see. from what i understand - it mentions about the mixing valve being reversed. therefore my manifold could be the wrong way around for this mixing valve to work- but if my mainfold only works this way - then some pipework needs changing. hmmmm??

have just checked your link - looks like the valve i have, unfortunately my german/danish is that good anymore, and it makes no sense. ha. cheers. have disconnected mixing valve head and moved the pin, you can heat it restrict the flow. have disconnected half the actuator heads - pins move...

havent put a temp test on the loops - but i'd say the flow is easily 60'c. the return is cold. every loop. this is why i suspect a faulty mixing valve??? blocked maybe?

i think so - they fill with water, between the 2 - 3 ltr mark. the springs inside dont seam to move. would this suggest its the wrong way around. on the manifold itself it shows what should be flow and what should be return, which is how i've connected it - because the mixing valve is in the...

yes have tried the circulator - when running, took the bleed screw off - spinning ok. - on the previous ufh that we took out - the actuators where on the top of the manifold, where as on this manifold they are located at the bottom - by spinning the manifold around, do you think this will have...