no central heating

[marios_kin]

no, educate me

 

[doitall]

whats the difference between a diverter valve and a 3 port valve, other than a combi is three time the price.

Its also quite good practice and commen practice to install a combi suppling the kitchen and a cylinder doing the bathrooms etc

 

[kevplumb]

so explain why the appearance of a three port valve implys the heating water is going to the taps
or the pump is ok

 

[marios_kin]

good practise or no, it aint common round here and why would you want to keep a cylinder of water hot all the time when what you use most often is heated instantaneously

 

[marios_kin]

because I dont know about you, but all the 3 port valves I have fitted have micro switches in them that wont start the pump until they are triggered and they are only triggered when the port calling for heat is open.

 

[kevplumb]

the pump motor might be running
that dont mean its diong anything
never heard of an impeller shattering/falling off

and you still didnt answer the first part of the question

dia is right combi on a s plan is common practice

 

[marios_kin]

if you read back I didn't say the pump was ok, I said the 3 port valve should be ok as the pump is running. As to the first part of your question, in combis I understood it was a diverter not 3 port, but whats in a name. they will know just what you want down the plumbcentre.

The pump could even be blocked but as I said before (twice) a manual would be a bit more help, especially as all that is happening here is us discussing possibilities and arguing over inconsequentials[/quote]

 

[doitall]

I always thought it was quite commen for the divertor valve to go wrong in a combi.

And the heating or hot water to still work

 

[kevplumb]

na yow are wrong
we obviously dont know what we are talking about
we should leave it to somebody that does

 

[marios_kin]

Yes Doitall it is.a Although I have seen it more often with hot water going off and heating still running due to the diaphragm perishing or stretching

 

[marios_kin]

OK Kev I bow to superior intelect and experience so I will shut up, but take a look at this for me will you. //www.diynot.com/forums/viewtopic.php?t=20072

 

[doitall]

Yes Doitall it is.a Although I have seen it more often with hot water going off and heating still running due to the diaphragm perishing or stretching

its still what i would check first.

If DP were here he would tell you exactly what to repair

 

[doitall]

interesting drawing and have never seen anything like it, is there no make no it

 

[kevplumb]

and you want to know what

 

[marios_kin]

Different thread, would be better posted there.