Application Wiring - Lennox iComfort E30 Installation And Setup Manual

E30 Smart Hub
0 1 2 3
UNIT HEAT
TYPE STAGES
W1 W2 W3 G Y2 Y1 C DS R H O B
Figure 5. Thermostat Wiring - E30 Smart Hub to HD Display Subbase
(Electrical Noise Termination Consideration)
OUTDOOR UNIT
Figure 6. Thermostat Wiring - E30 Smart Hub to HCWB3
HD Display Subbase
(Front View)
COMMBUS
+12V A B -12V
+ A B -
ACC1 ACC2
Terminal C Unused
wires
Single wire from bundle
to Smart Hub 24VAC
SUB-BASE
+12V A B -12V
SMART HUB

Application Wiring

Diagrams are typical low voltage conventional wiring connections.
E30 Smart Hub
Figure 7. Conventional Furnace or Air Hander with Conventional
E30 Smart Hub
Figure 8. Conventional Furnace or Air Hander with
Conventional Heat Pump
8
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.
Air Conditioner
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 O
connections. Wire E30 Smart Hub
direct to heat pump unit in those cases.
Remove jumper between R and W2 if present.
Not removing may cause erroneous alert
code 125 to appear.