ML193DF Gas Furnace Installation Manual - Lennox
ML193DF Gas Furnace Installation Manual - Lennox
ML193DF Gas Furnace Installation Manual - Lennox
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<strong>ML193DF</strong> and CONDENSING UNIT<br />
THERMOSTAT DESIGNATIONS<br />
(Refer to specific thermostat and outdoor unit.)<br />
Thermostat <strong>Furnace</strong> Condensing<br />
Unit<br />
R<br />
W1<br />
Y<br />
G<br />
C<br />
POWER<br />
HEAT<br />
COOLING<br />
INDOOR BLOWER<br />
COMMON<br />
R<br />
W<br />
Y<br />
G<br />
C<br />
*CONDENSING<br />
UNIT<br />
CONDENSING<br />
UNIT<br />
CONDENSING<br />
UNIT COMMON<br />
Install the room thermostat according to the instructions<br />
provided with the thermostat. See figure 50 for<br />
thermostat designations. If the furnace is being<br />
matched with a heat pump, refer to the FM21 installation<br />
instruction or appropriate dual fuel thermostat instructions.<br />
Indoor Blower Speeds<br />
1 − When the thermostat is set to FAN ON," the indoor<br />
blower will run continuously on the heating speed<br />
when there is no cooling or heating demand.<br />
2 − When the <strong>ML193DF</strong> is running in the heating mode,<br />
the indoor blower will run on the heating speed.<br />
3 − When there is a cooling demand, the indoor blower will<br />
run on the cooling speed.<br />
*NOTE − R" REQUIRED ON SOME OUTDOOR UNITS<br />
FIGURE 50<br />
TYPICAL <strong>ML193DF</strong> FIELD WIRING DIAGRAM<br />
IGNITOR<br />
*NOTE − R" REQUIRED ON SOME OUTDOOR UNITS<br />
*R<br />
FIGURE 51<br />
Page 34
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