Hello again everyone,
As mentioned previously I'm in the middle of a house renovation and I'm trying to sort the previous CH installation out.
Basically, the system used to have a back boiler downstairs, which was replaced as part of the Warmfront?!? scheme with a Worcester Bosch 24Ri in the kitchen.
The system to me seems pretty poor, the rads downstairs output half the heat of those upstairs so I've been doing some investigation. It appears the system is a one pipe type system, which may go some way to explaining why some radiators are cold in comparison to others.
Anyway, whilst a lot of the floorboards are up (next door neighbours leak flooding our foundations) I may as well try and address the CH system. I have no problem with coverting to a 2 pipe system, however I just need a little guidance. As far as I can tell the system looks like:
Apologies for the poor diagram. My questions are, does anyone know why the valve between the flow and return is there? Is it required? There can never be a total block to the flow as far as I'm aware (Single pipe system so even if all rads are off water will always flow)? Would it still be required with a two pipe system, assuming I make the radiator in the bathroom permenantly on?
Secondly, the pipes from the boiler are 22mm, about 1m after the pump all the pipes become 15mm in the CH system. Is it OK to keep all the radiators feeds and returns at 15mm? I should point out, the pump and diverter valve are all in the airing cupboard if this makes any difference? Should I consider running 22mm downstairs then branching off 15mm to each rad?
Thanks all
Ben
As mentioned previously I'm in the middle of a house renovation and I'm trying to sort the previous CH installation out.
Basically, the system used to have a back boiler downstairs, which was replaced as part of the Warmfront?!? scheme with a Worcester Bosch 24Ri in the kitchen.
The system to me seems pretty poor, the rads downstairs output half the heat of those upstairs so I've been doing some investigation. It appears the system is a one pipe type system, which may go some way to explaining why some radiators are cold in comparison to others.
Anyway, whilst a lot of the floorboards are up (next door neighbours leak flooding our foundations) I may as well try and address the CH system. I have no problem with coverting to a 2 pipe system, however I just need a little guidance. As far as I can tell the system looks like:
Apologies for the poor diagram. My questions are, does anyone know why the valve between the flow and return is there? Is it required? There can never be a total block to the flow as far as I'm aware (Single pipe system so even if all rads are off water will always flow)? Would it still be required with a two pipe system, assuming I make the radiator in the bathroom permenantly on?
Secondly, the pipes from the boiler are 22mm, about 1m after the pump all the pipes become 15mm in the CH system. Is it OK to keep all the radiators feeds and returns at 15mm? I should point out, the pump and diverter valve are all in the airing cupboard if this makes any difference? Should I consider running 22mm downstairs then branching off 15mm to each rad?
Thanks all
Ben