Supported Configurations - Lennox CS7500 Installation And Setup Manual

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.
Setup Backup/ Comp. Backup/
Indoor Stages Indoor
Heat Heat
Stages
HP GAS/OIL 1 1
HP GAS/OIL 1 2
HP NONE 1 0
HP GAS/OIL 2 1
HP GAS/OIL 2 2
HP NONE 2 0
HP ELEC. 1 1
HP ELEC. 1 2
HP NONE 1 0
HP ELEC. 2 1
HP ELEC. 2 2
HP NONE 2 0
Non GAS/OIL 1 1
HP OR ELEC.
Non GAS/OIL 1 2
HP OR ELEC.
Non NONE 1 0
HP
Non GAS/OIL 2 1
HP OR ELEC.
Non GAS/OIL 2 2
HP OR ELEC.
Heat 1st 2nd 3rd
Stages Heat Heat Heat
Stage Stage Stage
2 Y1 W1
3 Y1 W1 W1+W2
1 Y1
3 Y1 Y1+Y2 W1
4 Y1 Y1+Y2 W1
2 Y1 Y1+Y2
2 Y1 Y1+W1
3 Y1 Y1+W1 Y1+W1+W2
1 Y1
3 Y1 Y1+Y2 Y1+Y2+W1
4 Y1 Y1+Y2 Y1+Y2+W1 Y1+Y2+W1+W2
2 Y1 Y1+Y2
1 W1
2 W1 W1+W2
1 W1
2 W1 W1+W2
4th 1st 2nd Cool
Heat Em Em Stages
Stage Heat Heat
Stage Stage
W1 1
W1 W1+W2 1
1
W1 2
W1+W2 W1 W1+W2 2
2
W1 1
W1 W1+W2 1
1
W1 2
W1 W1+W2 2
2
1
1
1
2
2
34
Y3 1st 2nd 3nd Cool
Staging Cool Cool Stage
Control 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
Y1
Y1
Y1 Y1+Y2
Y1 Y1+Y2
O/B/Y3
relay
O/B
O/B
O/B
O/B
O/B
O/B
O/B
O/B
O/B
O/B
O/B
O/B
O/B
O/B
O/B
O/B
O/B