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fog
Hi can anyone tell me in a honeywell Y Plan system is it necessary to have the Hot Water off wire from programmer to ten block connector? , changing from an S plan system and would mean lots of hassle to put in extra cable, my thinking is once the hot water is satisfied it losses signal, but there may be a reason, as i understand y plan HW is default position for valve and when calling for CH changes to "A" position, or "AB" position if HW and CH is required if anyone can confirm that the HW off wire is not needed, many thanks