Wiring Thermostat - Lennox ComfortSense 5500 Installation And Setup Manual

Wiring thermostat

1. Connect wiring between thermostat, indoor
unit, and outdoor unit as shown in the appropri­
ate wiring diagram.
2. Seal the hole in the wall with a suitable material
to prevent drafts from entering the thermostat
case.
3. Configure thermostat and equipment for sys­
tem type (gas or electric heat), program the
thermostat, and test system.
TYPICAL COOL ONLY SYSTEM
1
TERMINAL DESIGNATIONS
C - Common 24 VAC
G - Fan relay
W1 - 1st stage heating (electric or gas heat)
Y1 - 1st stage cooling
R - 24VAC power
TYPICAL CONVENTIONAL SINGLE-STAGE
HEAT / COOL SYSTEM
8
1