Route Control Wires; Route High Voltage And Ground Wires - Lennox XP25-024-230-01 Installation And Service Procedure

3

ROUTE CONTROL WIRES

Maximum length of wiring (18 gauge) for all connections on
the RSBus is 1500 feet (457 meters). Wires should be col­
or-coded, with a temperature rating of 95
mum, and solid-core (Class II Rated Wiring). All low volt­
age wiring must enter unit through the provided field-
installed busing installed in the 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
thermostat cable with more than four wires is used, the ex­
tra 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 termi­
nal as shown in the figure below.
Provided Rast
6-PIN Connector
4

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 in the side panel of
the control box. Connect conduit to the control box using a proper conduit fitting.
ELECTRICAL INLET
(HIGH VOLTAGE)
WATERTIGHT
FLEXIBLE CONDUIT
TO SERVICE
DISCONNECT BOX
ELECTRICAL (CONTROL WIRING)
AND LINE SET INLETS USE
BUSHING AND GROMMETS
º º
F (35 C) mini­
®
control. When a
Outdoor Control
Single Wire To
C Terminal
Unused Wires
Figure 15. Electrical (Continued)
Page 25
PROVIDED IN BAG
BUSHING
GROMMETS
Indoor Control
Single Wire To C Terminal
TYPICAL CONTROL BOX
CONTROL WIRING
ROUTE (LOW VOLTAGE)
OUTDOOR CONTROL
iComfort Wi-Fi
thermostat
Unused Wires
GROUND LUGS
CONTACTOR
®
XP25