2 Wire Thermostat Installation With Nest Thermostat 3rd Generation
Get free shipping on qualified 2-Wire Programmable Thermostats products or Buy Online Pick Up in Store today in the Heating, Venting & Cooling Department. Honeywell CTA Manual 2 Wire Thermostat. SKU: CTA BRAND: Honeywell. $ - +. Add to cart. Quick View. THDV Does anyone know what will happen if I proceed without the connector? I have a 2-wire old Honeywell thermostat connected to R and W for a heat-only base board.