Need advice on thermostat wiring for carrier Furnace and AC


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Old 02-13-15, 03:11 PM
D
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Need advice on thermostat wiring for carrier Furnace and AC

Hi,

I have:

Carrier 58MN7A Furnace (two stage)
Carrier 24ANB6 A/C (I think is single stage only based on only having three wires going to it)

I am wiring in a new thermostat and have a question about the wiring.

My question is for the A/C wiring in particular.

The MB in the Carrier Furnace has a connector for Y/Y2 and Y1
The MB in the Carrier A/C has a connector for only Y


Is it wrong to connect both the Y/Y2 and Y1 wires to the Thermostat?

Connecting the wire makes the system think I have dual stage cooling... but I wasn't sure if this is for fan control or something else and that I need to have a dual stage A/C unit for this.

Your help is greatly appreciated.

Thanks

D.
 
  #2  
Old 02-13-15, 05:56 PM
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Here is a link to the A/C installation manual. Toward the end it show thermostat wiring.
http://dms.hvacpartners.com/docs/100...24anb6-3si.pdf
 
 

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