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Forgive me if this has been answered before, but I've trawled the site and not found.
My heating system is controlled by TRV's and a ST699 timer. I have recently upgraded the boiler and the living area gets very warm now. I was advised to obtain a room stat and as the lounge has just been decorated got a wireless one.
My question is I have been told that I need to wire the CMT921 to the ST699, which I feel confident to do, but having seen an answer on another website bore no resemblance to the terminal numbering on the timer or the programmer.
I would be very grateful if any one out there has a solution.
Thanks
Neil (greyandgrumpy)
My heating system is controlled by TRV's and a ST699 timer. I have recently upgraded the boiler and the living area gets very warm now. I was advised to obtain a room stat and as the lounge has just been decorated got a wireless one.
My question is I have been told that I need to wire the CMT921 to the ST699, which I feel confident to do, but having seen an answer on another website bore no resemblance to the terminal numbering on the timer or the programmer.
I would be very grateful if any one out there has a solution.
Thanks
Neil (greyandgrumpy)