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grant combi wiring for honeywell cmt927 and st9400c

...All i really need to know is how to wire both the 927 and st9400c ...
You have onechannel, the heating.
The cmt927 will switch that on and off depending on time and roomtemperature; the timer is integrated in it.
You don't need anything else, forget about the st9400, it is a time and you already have one build into the cmt927.
 

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