Repair Parts - Lennox ML180UHA Installation Instructions Manual

3 - Disconnect gas supply piping. Remove the screw se­
curing the burner box cover and remove cover. Re­
move the four screws securing the burner manifold as­
sembly to the vestibule panel and remove the
assembly from the unit.
4 - To clean burners, run a vacuum cleaner with a soft brush
attachment over the face of burners. Visually inspect in­
side the burners and crossovers for any blockage
Rollout Switches
Sensor
Repair Parts List
The following repair parts are available through independent Lennox dealers. When ordering parts, include the complete
furnace model number listed on the CSA International nameplate -- Example: ML180UH070AP36A-01. All service must
be performed by a licensed professional installer (or equivalent), service agency, or gas supplier.
Cabinet Parts
Upper access panel
Blower panel
Top cap
Control Panel Parts
Transformer
Integrated control
Door interlock switch
Circuit breaker
Blower Parts
Blower wheel
Blower housing
Motor
Motor mounting frame
Motor capacitor
Blower housing cutoff plate
ML180UHA BURNER ASSEMBLY & REMOVAL
Ignitor
Manifold And Gas Valve
FIGURE 29
caused by foreign matter. Remove any blockage. Figure
29 shows burner detail.
5 - Reinstall burner box, manifold assembly and burner box
cover.
6 - Re-install gas supply and turn on electrical power to fur­
nace.
Retention Rings
Cross Over
Heating Parts
Flame sensor
Heat exchanger assembly
Gas manifold
Combustion air inducer
Gas valve
Main burner cluster
Main burner orifices
Pressure switch
Ignitor
Primary limit control
Flame rollout switch (s)
Secondary limit
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