I am upgrading the radiators in my house and it looks like the one in the bedroom was put in after the rest of the system, the inlet and outlet are both on the hot line? I will need to tap into the main lines to get it working correctly, I am also unsure exactly how the system has been set up. I think the radiator in the second bedroom is the mast, because if that is off nothing gets hot. This should mean I have a bypass valve somewhere? but I cannot see one, it should be after the pump surelty? The boiler also circulates to the heating coil inside the hot water tank so I dont see that having any issues.

Should there be a master radiator or should they all be on parallel lines?

There should be no master rad they should be on flow and return
each rad should only control its self
needs looking into to find out what has been done

Yeah thats what i thought, I am going to put this radiator on flow / return so that will be sorted, further investigation seems to show the pump is on the return side after all the radiators.. God knows who did the system originally but it must be a fair few years old....

Where abouts are you mike, would be willing to pop around to have a look if your close enough.

You could have a old 1 pipe system mike.

sounds like an old one pipe, later systems have two manifolds for feed and return, though even on those you need to tune the rads so all get hot water to them

hi
best thing to do is draw a detail of the pipework and send it to me if i can help i will
cheers
taffy

Hi guys sorry been busy, it is a two pipe system as closing off any of the other rads does not shut the system down, only the one rad in the bedroom does that. I have now put the other bedroom rad in and it is on flow return and the pump is in the same area. So this rad will always be on even if the others are off, if that makes sense. Its all working fine though so will leave it as is. The hall is laminate floor and it looks like all the main connections are under there so that's a no go.

Thanks for jumping in though. Beef barn I am in Dumfries mate.

Bit to far for me Mike, im down on the south coast.

Quote: beefybarn wrote in post #9

---

Bit to far for me Mike, im down on the south coast.

---

Quote: mikeinatruck wrote in post #8

---

The hall is laminate floor and it looks like all the main connections are under there so that's a no go.

.

---