5
34-00048—03
Furnace installation
Turn off the power at the breaker box or switch that controls the heating and cooling
equipment.
1.
With the power to the furnace turned off, remove the furnace cover to locate the furnace
control.
2.
Identify the incoming power wire (coming into the furnace from the power switch). This wire
is typically black or red, but does not have to be.
NOTE:
Location of both 120V In Junction Box and IFC will vary
depending on model. If either is located in the same cabinet as
the blower motor, be sure to secure any wires in this cabinet
properly.
3.
Clip 20 A CT sensor around this wire. Remove and discard
the small pieces of paper shipped between the clamped
CTs. Be sure the CT latch is snapped shut.
4.
Route the 3.5 mm jack end out of the furnace cabinet to
Sensor Hub.
NOTE:
Best practice is to route the wire out of the furnace
cabinet through an existing grommet that has sufficient space.
If none are available, drill a new hole and insert a grommet
(not included)
to
protect the wire.
5.
Wire the R & C power cable into the Integrated Furnace
Control (IFC). Wire the red to R and the white to C. There
should be 24 VAC across these terminals.
NOTE:
C might be labeled as "COM" or "24 V."
6.
Plug the R & C power cable 3.5 mm jack labeled C
into the C port.
7.
Plug the CT (20 A) into the 1 port.
8.
Affix the Indoor Sensor Hub to the outside of the
furnace cabinet at the top of the unit with the
double sided tape on the back of the Hub. Clean
the cabinet surface before adhering the Hub to the
furnace cabinet.
NOTE:
If possible, put the Sensor hub on the side of
the furnace closest to where the Gateway is installed
to optimize signal strength
9.
Replace the furnace cover, then turn power back on
to the furnace.
NOTE:
Sensor Hub LED will turn on (Orange Blinking) if
Gateway has been configured in previous step.
M38284
1
C
1
C
Pair
Re
se
t
Se
nsor Hu
b
SENSOR
HUB
UPPER CABINET
120V IN
JUNCTION BOX
LOWER CABINET
SENSING CT
R AND C
POWER
CABLE
M38520
GROMMET
GROMMET
IFC
R C
