Slow hot water after fitting new immersion tank

[Losingthewilltolive]

Can someone please tell me what I have done wrong. Fitted a new tank exactly as old one recently but since then the hot water pressure up and downstairs has been really low. (E.g. A good 10/15 mins to fill kitchen sink) It is a gravity fed system. No gas. So far tried to clear any airlocks, fitted new valve, flushed all pipes to taps, checked tank in loft. No clue what to do next. Old tank had good hot water pressure so this is a new problem. Thanks in advance for any advice. Should add all 22mm pushfit. No flexi pipe

 

[John.g]

If there is free flow from the top of the cylinder checked/proven by means of a short length of pipe as was suggested above and if there has been no change to the pipework etc then surely it points to some blockage or air lock in the downstream piping?

 

[Losingthewilltolive]

Thank you everyone for your advice. You have all been a great help. Restoring a good water flow to the kitchen was the main thing I needed to do. We shall just have to live with the slow bath feed. We flushed all sections of the pipes with cold water and there was a good flow of water to each tap. We also checked the tank in the loft and the pipe leading to the immersion tank which also had a good flow rate.

 

[Leeb1987]

Thank you everyone for your advice. You have all been a great help. Restoring a good water flow to the kitchen was the main thing I needed to do. We shall just have to live with the slow bath feed. We flushed all sections of the pipes with cold water and there was a good flow of water to each tap. We also checked the tank in the loft and the pipe leading to the immersion tank which also had a good flow rate.

Sounds like there’s debris/airlock in the bathroom still

 

[Losingthewilltolive]

Sounds like there’s debris/airlock in the bathroom still

Yeah, it has to be air as the cold water flush had all of the hot water taps running really well. I just don’t know how to clear it or what I am doing wrong to get airlocks in the first place🙁