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Thanks, don't know how this is going to look as its a scanned AutoCAD drg? I've been told to have one mains isolation point for all rather than individually isolating the zone valves as shown. So take the field L & N as being fed from the boiler Ls & Ns. Other than that the scheme should...

Thanks Guys, I have had some contact this week with WB which started with "It can't be done", to "its possible if you remove the diverter valve + ism1 module and revert to an S-plan+ system" to "It Can be done with the components i have"! Well that was just great but how? In the end they gave...

Have contacted Worcester Bosch as suggested and await their reply. Nice find that the FW100 could be used to control two separate heating zones. I guess that the FW100 though only has two timing channels so would make the hot storage tank requiring its own single channel controller as I don’t...

Hi, thought this would be simple but having real problems searching for the right solution so any help would be most appreciated. In short i have upgraded my boiler as part of a house renovation/extension project adding solar panels and an unvented 300ltr twin coil tank. The system comprising...