installing to zone valves, do they require there own power supply, or can i just wire them to the aquastat? honeywell aquastat l8148e and zone valve honeywell yhv8043e1012...( it has 2 red wires that go to pump and 2 yellow wires that gos to themostat) thanks for any help
your red wires are your end switch, they go to T , T on your circulator relay.(wire your zone valve end switches together then run your red wires to T, T.) Your yellow wires go to your zone valve t-stats and transformer. one yellow wire goes to common of the transformer, the other yellow wire goes to W on your zone valves thermostat and then you will run a wire from R on your thermostat to R of the transformer. since you are wiring up two zone valves, the wires coming out of R on your thermostats will be wired together and then wire nutted to the wire comming out of R on your transformer. your yellow wires coming out of your zone valves will be wired together and then wire nutted to the wire coming out of C(common) of your transformer. hope this makes sense to you.
Last edited by GetYourShineBox; 10-23-2009 at 08:51 PM.