Central heating bypass???

[blushy]

I have a potterton suprema 30 boiler and in the airing cupboard I have a stopcock which is on a small gauge pipe than the rest of the setup. It goes from output side of pump before actuator valve to the pipe coming out of the bottom of the tank. Is this some sort of bypass and should it be turned off or on? Sorry for my non technical explanation.

Also I have a Myson CP53 pump, what flow rate should this be set too, thanks in advance.

 

[slippyr4]

to the pipe coming out of the bottom of the tank.

Do you mean HW cylinder?

The pipe at the bottom is normally CW feed. Connecting primary loop to that would be odd, to say the least. Unless it's your "filling loop". Is there a check valve on it?

Or, is it actually the second highest pipe connection on the cylinder, which is normally directly below the connection where the hot boiler water runs in?

 

[blushy]

to the pipe coming out of the bottom of the tank.

Do you mean HW cylinder?

The pipe at the bottom is normally CW feed. Connecting primary loop to that would be odd, to say the least. Unless it's your "filling loop". Is there a check valve on it?

Or, is it actually the second highest pipe connection on the cylinder, which is normally directly below the connection where the hot boiler water runs in?

Yes HW cylinder, runs from just past pump (smaller gauge than rest of copper pipes) and down to just past HW cylinder lower side pipe. There is a red handled valve. It looks like to me that the water bypasses the actuator switch. Dont know what it's purpose is and after having a shower mixer go wrong a while ago and turning everything off whether it's correct or not. Heating does appear to be taking long to reach desired temp this year.

 

[blushy]

Looking at http://www.deals4homes.co.uk/images/centheat2.gif it appears to be the bypass balancing valve. When the shower went wrong in an attempt to stop it I turned everything off. Should this be open or closed? Since closing the valve slightly the heating appears to heat up quicker.

 

[slippyr4]

Looking at http://www.deals4homes.co.uk/images/centheat2.gif it appears to be the bypass balancing valve. When the shower went wrong in an attempt to stop it I turned everything off. Should this be open or closed? Since closing the valve slightly the heating appears to heat up quicker.

do you have any kind of control valves? 3 port? 2 x 2port?

 

[blushy]

[do you have any kind of control valves? 3 port? 2 x 2port?

3 Port control valve, also what speed setting should pump be on.