1. ecobee Support
2. Legacy Products
3. Smart Si

Smart Si Wiring Diagrams

1-stage heat/1-stage cool

1-stage heat/2-stage cool

2-stage heat/1-stage cool

2-stage heat/2-stage cool

1-stage heat pump with auxiliary heat

2-stage heat pump with auxiliary heat

1-stage boiler/1-stage cool

2-stage boiler/1-stage cool

2-stage boiler/2-stage cool

1-stage boiler/2-stage cooling

Venstar Add-a-wire module

FAST-STAT 1000 Add-a-wire Module

24 VAC transformer 

3-wire zone valves with isolation relay

4-wire zone valves with isolation relay

TriangleTube incl. secondary circulator control