One for the baxi lads

[Newcastle88]

6 month old installation. Re ferb house. All pipework, rads changed and i mean every single pipe. New Platinum 40HE fitted. Customer had no hw. Called Engineer out today who found a blocked plate heat exchanger. He fitted a new one but told my customer that the system wasn't flushed correctly. I got an ear full from my customer.

I had used x300 and x100.

What causes the plate heat ex to block? I have had this a few times before but a 6 month old system can't be the cause.

 

[kevindgas]

its unusual to get problems in such a short space of time, but it happens, an inline strainer on the return pipe is a good idea stops the crud before it gets into boiler

 

[Newcastle88]

sorry i forgot to add it has a magnaclean on

 

[powell30]

Had the system been diluted or drained in the last six month? Could have been limescale? is the water hard up your way?

 

[Newcastle88]

customer says they havn't but it could have been. Very hard water area but the stuff he left in a bowl was black and half a circle shape. Definatley from the heating side. I have had same problem before on older systems but i always do an 8 hour flush on an older systems and cleanser on new systems.

 

[powell30]

The boiler won't have caused the issue and if it's black that sounds like magnetite so inhibitor weak or not there.......