2 heat 2 cool

[KingHVAC]

Can anyone please explain to me what a 2 heat 2 cool is? Also the other variations like 1 heat 1 cool (Thats is just one constant setting for heating right?) and 3 heat 3 cool ect.

Thanks

 

[IRstuff]

from Ecobee manual
"The Smart Si 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 Smart Si thermostat supports:
Up to 2 heat and 2 cool stages on a conventional system.
Up to 3 heat and 2 cool stages on a heat pump system.

Note that student posting is not allowed


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[RandomUserName]

As IRstuff stated, the "X" Heat, "X" Cool is either:

A. How many stages of heating and cooling a piece of equipment has, or
B. How many stages of heating and cooling a thermostat controller can control.

 

[cry22]

IRStuff

Many of us here old timers don't have a clue of what you just wrote, Never heard of 2heat2cool business in 30 years.
NOT just students.

 

[IRstuff]

I didn't "write" anything. It was copied verbatim from a product brochure. See page 3:

https://www.ecobee.com/wp-content/uploads/2014/09/EB-SmartSiIM-01-rev1_april3_general-2.pdf

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