I have a grant vtx 26 oil combi boiler and i am looking at using honeywell cmt 927 wirless thermostaat also wiring up st9400c.I dont wish to have the boiler on permanant demand for hot water .How can i wire up to use both.
i know it seems strange but would like to have it on timed rather then the hot what just keep heating itself up during the night in the expansion tank etc.There is a hot water on demand or timed switch on the boiler for that option.
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