Central Heating Usless

[brianfhudson]

We live in a bungalow and our pipework is under solid floor so we're not completely certain of the flow of the radiators or wether we have a one or two pipe system.We moved in 2 yrs ago so have inherited this system.We have always had some rads very hot,some warm and one cold(furthest away).During the summer we took off and flushed all the rads( they were very sludged),coupled with putting a cleaner in there has been some improvement but not much.
By feeling the trv/lsv pipes there are 3 rads were the lsv is hotter than the trv and that seems to be confirmed by the probable layout.We drained off the system and replaced all the TRV's with Bidirectional ones.Water was clean from both drain points and although no more was draining off,two rads had water in them.One of them had really dirty water in it.Connected everything up,bled the rads,pump and system and guess what,hardly getting any heat at all.As the pipes are in the floor,do you think when I drained the system all the sludge fell to the bottom. We could put some more sludge remover to move it about or is the solution Power flushing.
Also we have noticed that the pump has been placed on the return pipe just before it enters the boiler and was wondering if this is contributing to our ineffecient rads.
For ref Boiler is Wallstar 12/15
Pump Wilo gold50
9 rads

[LyricB]

Have you had a someone in just to see how much it might cost to fix? I usually get a pro to get me an estimate and then I figure out how much it would cost to do it myself.

[brianfhudson]

Thanks LyricB I took your advise,well nearly,I rang round a couple of plumbers asking about Powerflushing and explaining what I'd done.Both suggested it was highly unlikely to need powerflushing as using sludge remover and draining was enough,they said it was a 95% chance it was my pump and coupled to the fact mine was not the best they said change it to a Grunfoss.
I have duly done that and there is a marked improvement,not perfect yet but certainly better,I'm hoping by balancing(trial and error) I can get it almost
perfect.

[tater03]

That is so great that you were able to get some improvement. My parents recently had trouble with their furnace and really did not have the money to have someone come in. They called around and after about the fifth call they found someone that would help them with the problem and give them some ideas on what could be wrong. They were able to get the part needed and fixed without someone having to come in due to the fact that someone was willing to help them without worrying about getting paid. It was just very appreciated.

[LyricB]

I applaud you being able to try to fix things yourself. I'm too terrfied that I'll mess things up most of the time to try.

[tater03]

Quite honestly for myself I am the same way. When my husband tries to fix things on his own in our house I cringe. I am always afraid that it will end up costing us more money in the end. But so far we have been lucky.

[mtatum4496]

At the risk of losing my man card, I have to admit that there are some things I will fix myself and not think twice about it. There are other things that I would never even dream of trying to fix and I will waste no time calling in an expert.