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Honeywell T8775 non-programmable thermostat and Taco Viridian circulators?
I'm trying to install a Honeywell T8775 heat-only non-programmable thermostat. I believe I need to use the included resistor because we have 2 different zones with Taco controllers, but they aren't the typical zone valves that Honeywell describes in their install manual. We have 2 Taco Viridian Circulators (#VR1816-HY1-FC2A00) connected to a zone relay. I'm not exactly sure where to place this resistor.
Here are a few photos of the equipment: