ML193DF and CONDENSING UNIT

THERMOSTAT DESIGNATIONS

(Refer to specific thermostat and outdoor unit.)

Thermostat

Furnace

Condensing

 

 

Unit

Install the room thermostat according to the instruc- tions provided with the thermostat. See figure 50 for thermostat designations. If the furnace is being matched with a heat pump, refer to the FM21 installa- tion instruction or appropriate dual fuel thermostat in- structions.

Indoor Blower Speeds

R

W1

Y

G

C

POWER

HEAT

COOLING

INDOOR BLOWER

COMMON

R

W

Y

G

C

*CONDENSING

UNIT

CONDENSING

UNIT

CONDENSING UNIT COMMON

1 − When the thermostat is set to AN ON," the indoor blower will run continuously on the heating speed when there is no cooling or heating demand.

2 − When the ML193DF is running in the heating mode, the indoor blower will run on the heating speed.

3 − When there is a cooling demand, the indoor blower will run on the cooling speed.

*NOTE −

FIGURE 50

TYPICAL ML193DF FIELD WIRING DIAGRAM

IGNITOR

*NOTE −

*R

FIGURE 51

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Image 34
Lennox International Inc installation instructions Typical ML193DF Field Wiring Diagram, Thermostat Designations