ECOMAX 824 poor DHW flow rate

[braders78]

Fitting a bathroom at the moment, but was concerned at the poor hot water flow rate. I measured the flow rate and it is only 5l/min. After sifting through the Vaillant manual I tried to adjust the water section of the divertor valve but was allready in the full flow rate position.
I've searced this forum but cant find a similar problem, I'm thinking that the diaphram needs replacing?

Oh its the ecomax with the black control panel, not the ecomax plus or pro.

The boiler is 10years old and the owner said its been like it from installation.

Im a corgi registered installer

Any advice welcome, i would rather not change the whole divertor valve due to cost to the customer as they are a family friend!

 

[Dan Robinson]

What model number? The ecoMAX manual I am looking at has the diverter valve with nothing to do with hot water flow.

 

[Dan Robinson]

Untitled

• Dan Robinson
• 13 Feb 2009
• 1

Does it look anywhere near as sh@gged as this one...

 

[braders78]

Not got the model number on me at the mo, I've just disscovered this forum. I thought (wronge probably) that the ecotec with the black controlled panel was the VUW model. so it would be turbomax vux 242 eh, i guess. the diverter valve part no. is 011280.

There is a flat bladed adjustment screw in the bottom which is set from manufacture. In the manual it says to only adjust this if the customer wants hotter water at the loss of some flow.

Carter

 

[braders78]

like this....

Untitled

• braders78
• 13 Feb 2009
• 1

not that shagged, boiler works very well, apart from rubbish dhw flow!

 

[Dan Robinson]

Have you checked the filters?

 

[Andy165]

10 or plus years old, tell them to replace the combi with a new one. Flogging a dead horse and all that. How many people hang onto a car giving **** performance at 10 years + old? Time for these people to realize that combi boilers work just as hard as cars, you get what you pay for!

 

[braders78]

Not yet, where are they situated?

My plan was too turn the mains water of and check the cold supply through.

Anothe colleuge of mine said that there could be a restricter on the inlet to the dhw plate h'exchanger.

 

[Dan Robinson]

There is indeed.

The filters are in the bottom of the diverter valve.

You need to take it off really.

 

[braders78]

Not a chance I would tell them to replace it, got plenty of life left in it yet. You can get a whole new D valve for £100, new boiler would cost them ten times as much and some!!!!.

I would like to fit them a new boiler as work is work.

 

[braders78]

ok dan, will check the diverter valve out.

Cheers will let you know how I get on.

 

[braders78]

anyone know where I could get an exploded diagram of said diverter valve?

 

[Dan Robinson]

Bear with me... posting one....

 

[Dan Robinson]

Untitled

• Dan Robinson
• 13 Feb 2009
• 1

knock yourself out

 

[braders78]

NICE! will check the filter (item 9) tomorrow, shouldnt take to long.

Cheers again dan