Trying to get the heating working correctly

[ShaunCorbs]

Thanks for the replies, I was hoping they wouldnt be the replies I got, but if it needs sorted it needs sorted. So im assuming that the PSV on the cylinder should go to a drain rather than just being open, where should the PSV on the heating system be located, and what should be used instead of a 3 way valve (it does say mid position v/v but im assuming that is practically the same)

sorry to say i cant answer them just incase you try to fix the issue your self (i know you wont but its an open forum hope you understand)

also invalidates your home insurance

 

[ShaunCorbs]

There has been alot of things hidden with this house think he tried to do everything himself, and did it poorly, already had to rip all the silicon out the shower and reseal, re-grout tiles where water was migrating behind, install a new trap on the sink because the angle was severe and it was actually leaking, and the sink was stuck to the wall with silicon, not screws securing it, and then stuck to the pedestal with plumbers mate. This house is turning into a nightmare having to fix loads of bodged jobs

sorry to say with them sort of people theres alot more hidden/unexpected things

 

[thompa25]

Ahh right no problem mate, I should have read the rules, I assumed you couldn't give advice on the gas side of the system, must be the whole side. Im going to have to get an engineer round. Its just frustrating im in engineering myself and see some of the stuff that he has done and its shocking. Im going to have to rewire most of the house aswell (Im qualified for that haha)

 

[king of pipes]

House of horrors then bud a little knowledge is dangerous is the saying i am afraid you need a engineer to sort this one your system is unvented its installed incorrectly, why did he not fit any clips thats basic stuff , beer time all the best kop

 

[thompa25]

cheers for the advice lads, ill have to get someone in for it, wish i could have a pint, at work

 

[deg]

Anyone figure out what the yellow pump is for? Bronze pump for sec return maybe? Hard to tell from pics

 

[ShaunCorbs]

Anyone figure out what the yellow pump is for? Bronze pump for sec return maybe? Hard to tell from pics

yes its a stratification pump

 

[thompa25]

That stratification pump, as you call it, this must be used to circulate the hot water around the DHW system. If this pump isnt running I only get cold water out the taps, as soon as its running the hot water is fine. I was going to install a flow switch to operate the pump, so when a tap is run the pump kicks in. As appose the way it works now, the pump only runs when the hot water system is calling for heat (Hot water on). Is a flow switch a standard setup for this?

 

[king of pipes]

just wire it into a timer to run it when your need for hot water is at its most demand few hours am and pm

 

[thompa25]

I know what your saying, but then surely if I want a shower or something outside these hours, then I will have to switch on the pump, almost in the same situation as I am now. My girlfriend has spoken to her friend whos partner is a heating engineer. She tried to pass on what he said, as i haven't spoken to him directly. So what she has passed on is, for the current setup we would need to install a 2 port zone valve between the mid position and the cylinder, install a tundish to the drain on the PSV on the cylinder, then he said about putting in a PSV on the heating side. He also said we could rip it out and install an S plan system, but would be more expensive. He didnt mention any prices, but I really hope it isnt going to cost too much.

 

[ShaunCorbs]

I would do an S plan over a y+

 

[thompa25]

Ill get in contact with the bloke and get him round, hopefully it wont be a ball ache to change it out, how many hours labour do you think to convert that to an S plan?

 

[ShaunCorbs]

Ill get in contact with the bloke and get him round, hopefully it wont be a ball ache to change it out, how many hours labour do you think to convert that to an S plan?

Tbh about an hour more plus rewire

 

[thompa25]

I'll be doing all the wiring so just the plumbing side, thanks for your help

 

[thompa25]

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.

 

[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?? 😵