I have a house with 5 heating zones, some radiant heat some cast iron. Each zone is controlled with a standard 24V thermostat. I would like to create a simple circuit that would make a zone (or two) slaves to another zone.
Example
Zone A calls for heat (thermostat closes) i would like this action to cause Zone C to come on (via a relay??) for as long as Zone A needs heat. Zone C would still be a discrete zone.
Does any of this make sense?