Trying to get the heating working correctly

[ShaunCorbs]

Just one more question while trying to get my head around the system. So i have my main water inlet through the combination valve, and teed off to the expansion tank, then into the inlet of the cylinder. What is feeding the secondary pump? and why don't I get hot water unless this is running.

You should still get hot water might take 60 seconds but you should still get hot water

 

[thompa25]

I sometimes get warm water but only briefly, and sometimes luke warm, as soon as the pump is running, instant hot water, I'm just confused as to what is feeding the secondary pump if you have your cold water main coming in via the combination valve. My thinking is if i get my head around the system prior to the bloke coming round, we will spend less time messing about trying to explain things to me.

 

[ShaunCorbs]

I sometimes get warm water but only briefly, and sometimes luke warm, as soon as the pump is running, instant hot water, I'm just confused as to what is feeding the secondary pump if you have your cold water main coming in via the combination valve. My thinking is if i get my head around the system prior to the bloke coming round, we will spend less time messing about trying to explain things to me.

All the pump does is draw hot water from the tank (out the hot) to the furthest outlet and back again to the cold inlet

 

[thompa25]

Cheers shaun, but my knowledge is limited, so is the hot water setup like a ring main flowing out the cylinder, into some sort of manifold, which all the outlets are connected, then back to the hot water tank, via the pump, all the pum is doing is just circulating this hot water round the system, getting it to the taps quicker than if there was no pump? im guessing this is then the case so the pump isnt pumping against a closed system, over-pressurising the tank. Thanks for your help

 

[deg]

It looks as if the bronze pump is fed by the cold mains not the hot??

 

[ShaunCorbs]

It looks as if the bronze pump is fed by the cold mains not the hot??

pumping into the cold feed to the cylinder (cylinder doesn't have a secondary port/ tapping)