The following diagrams are typical low voltage wiring connections for various system congurations.
E30 Smart Hub
Set “Unit Type” to IFC for furnace
and AHC for air handler.
Set “Heat Stages” to number of either gas or
electric heat stages.
Not all furnaces have Y1, Y2 and W2 connections.
Wire E30 Smart Hub direct to air conditioner unit
in those cases.
Remove jumper between R and W2 if present.
Not removing may cause erroneous alert code 125
to appear.
Figure 7. Conventional Furnace or Air Hander with Conventional Air Conditioner
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