Hello
I currently have a openvented y-plan system with a 140 litre copper cylinder, heating provided by a mexico super 2 cf125 boiler.
I would like to install solar thermal for hot water in the summer and realise that to do so means upgrading the cylinder. I am considering a 200 litre thermal store like a megaflow. As a secondary plan, the new cylinder would be situated downstairs in the boiler room thereby freeing up the space currently occupied by the existing cylinder and cold water storage tank.
I don't really want to upgrade the boiler - can such an old boiler be used to heat water in the likes of a megaflow or is that against the rules?
Another thing i'm not sure about - can the existing Y-plan heating system work with the megaflow, i.e. could i heat the rads from the stored heat and in doing so does the openvented system become a sealed system (it is all copper) ? OR, does the boiler continue to heat the rads as per the existing openvented system and in which case I guess the new storage tank will be heated by the DHW branch of the Y-Plan (as it is currently).
Thanks
Mike
Edit; the incoming water main is the newer blue plastic MDPE (?) type, 25mm, but I realise flow rate needs to be within a certain spec for a megaflow type cylinder.
I currently have a openvented y-plan system with a 140 litre copper cylinder, heating provided by a mexico super 2 cf125 boiler.
I would like to install solar thermal for hot water in the summer and realise that to do so means upgrading the cylinder. I am considering a 200 litre thermal store like a megaflow. As a secondary plan, the new cylinder would be situated downstairs in the boiler room thereby freeing up the space currently occupied by the existing cylinder and cold water storage tank.
I don't really want to upgrade the boiler - can such an old boiler be used to heat water in the likes of a megaflow or is that against the rules?
Another thing i'm not sure about - can the existing Y-plan heating system work with the megaflow, i.e. could i heat the rads from the stored heat and in doing so does the openvented system become a sealed system (it is all copper) ? OR, does the boiler continue to heat the rads as per the existing openvented system and in which case I guess the new storage tank will be heated by the DHW branch of the Y-Plan (as it is currently).
Thanks
Mike
Edit; the incoming water main is the newer blue plastic MDPE (?) type, 25mm, but I realise flow rate needs to be within a certain spec for a megaflow type cylinder.