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ecobee M5A Smart Wi-Fi Thermostat User Guide

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Table of Contents

Installation Guide.............................................................................................................................................. 7

How to determine if your HVAC system is compatible and if you have a C-wire. ....................................................8

What do my thermostat's wire labels mean?.......................................................................................................10

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Common thermostat wires................................................................................................................ 10

Less common thermostat wires......................................................................................................... 11

Incompatible thermostat wires........................................................................................................... 12

Scenario 1: Install your ecobee with a C-wire.....................................................................................................14

Scenario 2: How to install with multiple G-wires .................................................................................................20

Scenario 3: How to install without a C-wire using the supplied PEK adaptor........................................................26

Setup Guide ...................................................................................................................................................... 38

Configuring your ecobee thermostat for the first time (I’m a homeowner)............................................................38

Configuring your ecobee thermostat for a Heat-Pump system ............................................................................40

Configuring your ecobee thermostat for the first time (I’m a Pro).........................................................................41

Fan Coil Unit (FCU) wiring on the ecobee:.........................................................................................................41

Terminal activation for multi-speed fan control ...................................................................................................42

Fan speed selection (System Mode)..................................................................................................................43

The Pipe Sensor ...............................................................................................................................................44

Pipe Sensor Activation (notification & alerts):.....................................................................................................45

Multi-speed setup flow options during setup process: ........................................................................................46

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Fan Coil Unit, no W1 wire.................................................................................................................. 46

Fan Coil Unit, w/ W1 wire.................................................................................................................. 46

Heat Pump/PTAC............................................................................................................................. 47

Fan Coil Unit, no W1 wire & Pipe Sensor............................................................................................ 47

Fan Coil Unit, w/ W1 wire & Pipe Sensor ............................................................................................ 48

Setting up an ecobee for dehumidification control..............................................................................................49

Setting up an ecobee for ventilator control.........................................................................................................51

Setting up an ecobee for humidification control..................................................................................................53

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