Here are instructions for connecting Taco SR503-4 Three Zone Switching Relays and Ecobee thermostats.
Connecting Energy Kinetics Systems with Nest and Wi-Fi Thermostats
Power sharing Wi-Fi thermostats like Nest may cause false signals if not wired properly to the Energy Manager. Click Here to see thermostat wiring instructions, or view more information here. Note: Nest 3rd Generation learning thermostats are compatible with Display Energy Managers and the Accel CS. The Ascent Combi and the Ascent Plus Combi require a separate transformer or compatible zone controller.
NOTE: Nest 4th Generation Thermostats require a “common” C wire and will prevent setup to continue and display an “equipment error” until one is installed. This is the case for all HVAC systems including Energy Kinetics heating systems. An add a wire “Common Maker” can be used if there is no common wire.
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Here are instruction sheets for Nest to Taco ZVC with 3-wire application, Nest to Taco ZVC with 2-wire application, Nest to Taco SR with 3-wire application, and Nest to T...
From unheard of to almost mandatory, the thermostat common wire or “C wire” has become a major issue. What is a C wire? The common wire is the neutral wire from the 24V t...