c+m brittony 80

[hendo127]

hi there earlier couldnt get no hot water suspected the water heat exchanger took it apart and it was full of crap blocking one of the holes. I cleared the blockage and seems to be working ok again. What do youz think is causing this build up of stuff and what options do you's recommend.

 

[gas4you]

Which side was blocked. heating water or mains water

 

[hendo127]

thanks for the quick reply it was the left hand side (heating side) blocked with a sort of rusty stuff

 

[gas4you]

I would recommend that the heating system is powerflushed as it sounds like the is loads of c*** in your system

 

[hendo127]

should i change the heat exchanger as well? How much am i looking at for a powerflush ?

thanks

 

[gas4you]

The heat exchanger sounds like it has responded to your cleaning so I would leave it in for now.

Average price for powerflush would be around £350 + VAT

 

[hendo127]

does this include all the radiators??? It making a sort of kettling noise when the water heats up do you think this is because the water isnt going through the exchanger fast enough???

thanks

 

[gas4you]

Kettling is usually common in older boilers due to scale build up. The water in the heat exchanger boils on each little 'spot' of scale which is what causes the noise.

A strong cleanser/descaler used in the powerflush correctly would help this.

Yes this price would include the rads an all

 

[Rob]

does this include all the radiators??? It making a sort of kettling noise when the water heats up do you think this is because the water isnt going through the exchanger fast enough???

thanks

Yes. Personally hendo as your capable of changing/cleaning the HW HE yourself, id keep the powerflush money and put it towards a new boiler as it will need to be done then anayway.

Its not a bad boiler but i wouldnt be spending that sort of money to maintain it.

Also as a temp repair, run a chemical in the system for a few weeks and drain it out a few times.

 

[hendo127]

thanks for all your help mate much appriciated

 

[hendo127]

cheer rob your totally right its a lot of money for a flush when its that old!! How would i put a chemical in the system?

 

[hendo127]

how would i chemically treat my boiler???

 

[gas4you]

Isolate a rad, drain water from it and add chemical cleanser via air bleed nipple. Refill and let circulate for a few days.

 

[hendo127]

thanks dave where would i get one of these treatments and at what cost???

 

[gas4you]

Any local plumbers merchants or at a push B&Q or similar. probably around £15 depending on make/quantity.