Nightmare of a day. Changed some rads now not heating up!

[jonnyswamp]

Nice one, now make a note of their number and never answer it again :cowboy:

 

[rpm]

I have +10 numbers listed under DNA
Do Not Answer.

 

[Reg Man]

Problem will re-occur though. unless you identify the air problem.

 

[armyash]

Problem will re-occur though. unless you identify the air problem.

They had a powerflush done by a firm a couple of years before us and they said it was after that the problems started. What I have read about oxygenation looks promising.

 

[gassafe]

I doubt the powerflush caused any problems.... They obviously requested a powerflush or needed one as the system was furred up back then too...

Theres not pipework under the ground is there? I went to one job where there was a leak under the property, the roof tank must have just kept on refilling it but the entire system was full of brown water, pipes thick with red / brownish gunk in all the pipes.

On one other job where they had had recurring pin holed rads & constant air in the system the cold feed & vent were wrong & it was gravitating over the vent, & down the cold feed, bringing a constant supply of oxygen into the system. Once that was fixed there has never been a problem with air in the rads!

 

[Millsy 82]

Nice one, now make a note of their number and never answer it again :cowboy:

No just remember about it for next time. They get charged more or 1st thing you do is check the cold feed and vent.

My guess is that it will be piped up how they used to do gravity fed, a quick repipe will stop it pumping over and make it fill a lot easier.

A few years back I went to a property and changed a 3 port valve went to fill and it was a right pain in the rear and would hardly fill at all. The customer said last time someone drained it it took 5 hours and they left it and 3 days later it righted itself so they wanted a fixed price to repair it. After 2 hours I got fed up and said to the woman I will give you 2 options no1 I will leave it and if it doesn't sort itself I will come back or no2 I will repipe the cold feed and vent for x amount more, a bit of huffing and puffing from the customer about it costing more than we priced for to which I replied you knew there was a problem so I have given you an option to repair the fault no worries for future use, after explaining over the phone to the old man he said yeah do it. 45 minutes later I left the property with all the rads piping hot.

 

[Reg Man]

Cold feed takes up the expansion so is apart of the safety device? so blocked cold feed relies on secondary safety device, the open vent?