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OK thanks.
If both heating and hot water are set to be permanently 'on' at the programmer near the hot water cylinder then that is controlling the heating of the water, not the room thermostat. Hot water cylinders don't cause the boiler to fire often, because once they are heated and unless you are using a lot of hot water, they stay hot for hours on end. With your present set up, because the Salus is a combined programmer and and thermostat, the central heating needs to be left permanently 'on' at the programmer near the cylinder, otherwise it would override the Salus.
The existing programmer looks like a Siemens RWB9 (aka Landis and Staefa)
In which case the wiring terminals will be as below...
View attachment 135229
....and the Hive Dual Channel version is exactly the same. Lucky you, they are a straight swap
View attachment 135230
Once the Hive is installed, look at the wiring at the Salus receiver. Trace the cable from the Salus back to its origin and note where each of the wires are connected, and remove the entire cable. Then join together with a wire link, the terminals where the wires that went to the Salus 'NO' and 'COM' terminals were connected. Don't worry about any other connections, they are only to provide power to the Salus and can be disconnected. If you need any further help with this bit, post back a photo of the wires connected to the Salus.
No need to touch any of the wires at the boiler.
Hi Stem,
I think i have the same issue with my boiler.
I just wired in my hive system and it all works well except I can’t get the heating to turn off without switching on the hot water. I didnt realise they had actually designed boilers that have hot water always active, but as you say they dont need to fire up that often for water anyway.
So anyway when i removed the old control panel i noticed it was misisng CH off, but had the other 5 wires required for hive.
Am i right in thinking that if i loop the CH off (which is currently blank) to the HW on, it will effectively perform the task of turning off the heating anyway?
Thanks,
George
P.s it is not the same boiler as mentioned in this article. I can give more details if required