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Taco Zone control and a T8001 Thermostat compatibility issue.
in Controls
After searching the forum and not finding a related answer, I have a question concerning a Honeywell T8001 Thermostat and a Taco SR504-EXP-4 Zone controller. The Taco instructions state that for power stealing thermostats, a 1K 1W resistor is placed between the W and C terminals at the controller to supply the T-stat and allow the relay to pick up. I have tried the resistor and cannot get the relay to latch. I tested things with a simple thermostat and the controller works fine that way. Any insight as to why the suggested set-up from TACO is not working correctly?
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Comments
You can choose to do what you want, but you cannot choose the consequences.
I thought the resistor is usually to shed excessive current coming back so you don't get a flickering indicator light or chattering relay from the current leaking back?
It does sound like a crossed wire or open wire. A voltmeter would tell if you have voltage coming back when the stats is on.
There are some weird PWM stats out there that don't get along well with all relays.
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