Page 14
OUTDOOR CONTROL
4
ROUTE CONTROL WIRES
Maximum length of wiring (18 gauge) for all connections on
the RSBus is 1500 feet (457 meters). Wires should be color-
coded, with a temperature rating of 95
º
F (35
º
C) minimum,
and solid-core (Class II Rated Wiring). All low voltage wiring
must enter unit through provided field-installed busing
installed in electrical inlet.
The iComfort
Wi-Fi
®
thermostat requires four thermostat
wires between the thermostat and the furnace / air handler
iComfort™ control and four wires between the outdoor unit
and the furnace/air handler iComfort™ control. When a
thermostat cable with more than four wires is used, the extra
wires must be properly connected to avoid electrical noise
(see below).
Use a wire nut to bundle the four unused wires at each end
of the cable. Each bundle should also include an additional
wire that should be connected on each end to the C terminal
as shown in the figure below.
Any excess high voltage field wiring should be trimmed and secured away from any low voltage field wiring. To facilitate a conduit, a
cutout is located side panel of the control box. Connect conduit to the control box using a proper conduit fitting.
ROUTE HIGH VOLTAGE AND GROUND WIRES
TYPICAL CONTROL BOX
GROUND LUGS
CONTACTOR
WATERTIGHT
FLEXIBLE CONDUIT
TO SERVICE
DISCONNECT BOX
ELECTRICAL INLET
(HIGH VOLTAGE)
5
Indoor Control
iComfort
Wi-Fi
®
thermostat
Single Wire To
C Terminal
Unused Wires
Unused Wires
Single Wire To C Terminal
Outdoor Control
CONTROL WIRING
ROUTE (LOW VOLTAGE)
ELECTRICAL (CONTROL WIRING)
AND LINE SET INLETS USE
BUSHING AND GROMMETS
PROVIDED IN BAG
PROVIDED RAST
6-PIN CONNECTOR
BUSHING
GROMMETS
FIGURE 10
