hive gravity multizone hot water

I am struggling to wire up a very simple gravity HW with pumped CH system. I have an old but much loved Grant triple-pass 90/110 oil boiler and a Grunfos circulation pump. I am in a gas free area. The defunct room thermostat is removed. The Hive receiver is a dual channel type. It all works fine...

Hello, I’ve recently replaced a bit of a hybrid controller system on my old c plan ideal Mexico floor standing boiler. It all operated fine but wanted to make programming a bit simpler. I have an c plan system with gravity hot water and pumped heating. There is a zone value on the hot water...