3
HVAC System Compatibility Information
The Legacy Line Wi--Fi Thermostat is designed to operate with
low--voltage heating and cooling systems. It is not designed for use with
line--voltage or millivolt heating and cooling systems.
The Legacy Line Wi--Fi Thermostat supports:
d
Up to 2 heat and 2 cool stages on a conventional system.
d
Up to 3 heat and 2 cool stages on a heat pump system.
The Legacy Line Wi--Fi Thermostat supports the following equipment:
Equipment
Supported?
Gas / Oil / Electric heating
(up to two stages)
YES
Heat pump with auxiliary heat
(up to three stages)
YES
Geothermal Heat Pump
YES
Dual fuel systems
YES
Standard electric cooling
(up to two stages)
YES
Boilers
YES
Summary of Contents for IIT2-WHS-02
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