Lennox SL25XPV Series Installation Instructions Manual page 17

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
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 S30 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.
PROVIDED RAST
6-PIN CONNECTOR
ROUTE HIGH VOLTAGE AND GROUND WIRES
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.
Connect high voltage field wires to the line side of contactor located on the bottom of the contactor. Connect the ground wire to the
ground lug in the control box.
ELECTRICAL INLET
(HIGH VOLTAGE)
IBLE CONDUIT
TO SERVICE
DISCONNECT BOX
ELECTRICAL (CONTROL WIRING)
AND LINE SET INLETS USE
BUSHING AND GROMMETS
º º
F (35 C) minimum,
Outdoor Control
Single Wire To
C Terminal
Unused Wires
Page 17
PROVIDED IN BAG
BUSHING
GROMMETS
OUTDOOR CONTROL
Indoor Control
Single Wire To C Terminal
GROUND LUG
CONTACTOR
TYPICAL CONTROL BOX
CONTROL WIRING
ROUTE (LOW VOLTAGE)
iComfort S30
Thermostat SmartHub
Connection
Unused Wires