Appendix C. Supported Configurations - Lennox ComfortSense 7500 Installation And Setup Manual

Appendix C. Supported Configurations

This thermostat support air conditioner and heat pump systems with one or two speed compressors. It
also supports dual-fuel and Humiditrol accessory. For all possible configuration see table below.
Backup/
Comp.
Indoor
stages
Heat
Stages
HP GAS/OIL 1
HP GAS/OIL 1
HP NONE 1
HP GAS/OIL 2
HP GAS/OIL 2
HP NONE 2
HP ELEC. 1
HP ELEC. 1
HP NONE 1
HP ELEC. 2
HP ELEC. 2
HP NONE 2
GAS/OIL
Non
OR 1
HP
ELEC.
Back­
up/In­ 1st 2nd
Heat
door Heat Heat
Stages
Heat Stage Stage
1 2 Y1 W1
2 3 Y1 W1
0
1 Y1
1 3 Y1 Y1+Y2
2 4 Y1 Y1+Y2
0
2 Y1 Y1+Y2
1 2 Y1 Y1+W1
2 3 Y1 Y1+W1 Y1+W1+W2
0
1 Y1
1 3 Y1 Y1+Y2
2 4 Y1 Y1+Y2
0
2 Y1 Y1+Y2
1 1 W1
3rd Heat 4th Heat 1st Em Heat
Stage Stage
W1+W2
W1
W1 W1+W2
Y1+Y2+W1
Y1+Y2+W
Y1+Y2+W1
1+W2
47
2nd Em
Cool
heat
Stage Stages
Stage
W1 1
W1 W1+W2 1
1
W1 2
W1 W1+W2 2
2
W1 1
W1 W1+W2 1
1
W1 2
W1 W1+W2 2
2
1
1st 2nd
Cool Cool
Stage Stage
Y1
Y1
Y1
Y1 Y1+Y2
Y1 Y1+Y2
Y1 Y1+Y2
Y1
Y1
Y1
Y1 Y1+Y2
Y1 Y1+Y2
Y1 Y1+Y2
Y1