Recent content by boltwhite

So I did that briefly at the weekend - shut off main supply; opened a hot tap full (which slowed down to a dribble but didnt stop); and watched the underfloor heating gauge which started dropping; only did it for a couple minutes; when i opened the mains again the underfloor heating pressure...

The manual calls it a 'UniHub Thermal Store' unvented copper dual mantle (tank-in-tank). I attach a photo and page from the manual... Nobody ever seems to have heard of this design...

Hi all, Moved into a house built in 2008 with a ground source heat pump that does both the hot water (with immersion heater also) and wet underfloor heating. The hot water tank is a 'tank in a tank design' where there is an inner tank for the domestic hot water and an outer tank for the...

Looks like there are 4 wires + earth coming back to the panel from each sensor. Good news. Do I need to go to each sensor and take the id biscuit out? Or can I just run through them? I guess I then wire each sensor into a separate input on the board and add in EOL resistors as 'normal'? thanks...

Reading up a but more it looks like the old Euro one+ system uses 'id biscuits on the sensors' - is this compatible with the new alarm system?

Hi, I've just moved into a new house and am upgrading the alarm system to get app functionality. The wiring switch to the new PCB looks reasonably straight forward except - the old Euro one+ system has a RS485 bus (-,+,D3,D4) for the keypads and a single 'iD' 4-terminal (-,+,E3,E4) which all the...