Thermostat Wire Termination In Communicating System - Lennox icomfort Wi-Fi Setup Manual

Thermostat wire termination in communicating system

Outdoor Unit
Communicating systems using the icomfort Wi-Fit thermostat require four
thermostat wires between the thermostat and the furnace/air handler control
and four wires between the outdoor unit and the furnace/air handler control.
When a thermostat cable with more than four wires is used, the extra wires
must be properly connected to avoid electrical noise. The wires must not be
left disconnected.
Indoor Unit
Controller
Single wire to
terminal C
Unused wires
Page 63
Single wire to
terminal C
Unused wires
Use wire nuts to bundle the unused wires at each end of the cable. A single
wire should then be connected to the indoor unit end of the wire bundle and
attached to the C" terminals as shown in the diagram above.
This is not an issue in non−communicating systems.
icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
icomfort Wi-Fit
thermostat