Lennox International Inc Merit Series Gas Furnace TYPICAL ML180UH FIELD WIRING DIAGRAM

Models: Merit Series Gas Furnace

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TYPICAL ML180UH FIELD WIRING DIAGRAM

TYPICAL ML180UH FIELD WIRING DIAGRAM

IGNITOR

*NOTE −

*R

FIGURE 33

INTEGRATED CONTROL

(Automatic Hot Surface Ignition System)

 

 

TERMINAL DESIGNATIONS

 

HUM

 

Humidifier (120VAC)

 

LINE

 

Input (120VAC)

 

XFMR

 

Transformer (120VAC)

 

EAC

 

Electronic Air Cleaner (120VAC)

 

COOL

 

Blower − Cooling Speed (120VAC)

 

HEAT

 

Blower − Heating Speed (120VAC)

 

PARK

 

Dead terminals to park alternate speed taps

 

FLAME

 

Flame sensor

 

 

 

NEUTRALS

 

Neutral terminals (120VAC)

3 AMP, 32 VAC FUSE

 

 

FIGURE 33 HEAT FAN OFF

DELAY JUMPER

FIGURE 34

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Lennox International Inc Merit Series Gas Furnace TYPICAL ML180UH FIELD WIRING DIAGRAM, Figure Integrated Control