Lennox International Inc EL180UHE Repair Parts List, ML180UHE BURNER ASSEMBLY & REMOVAL

2 - Label the wires from gas valve, rollout switches, prima­ ry limit switch and make-up box then disconnect them.

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 caused by foreign matter. Remove any blockage. Figure 33 shows burner detail.

5 - Reinstall burner box, manifold assembly and burner box cover.

6 - Re-install gas supply and turn on electrical pwer to fur­ nace.

	ML180UHE BURNER ASSEMBLY & REMOVAL
Rollout Switches		Retention Rings
(-090, -110 -135 units)
Rollout Switches	Ignitor
(-045 and -070 units)
		Cross Over
Sensor
	Manifold And Gas Valve

FIGURE 33

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: EL180UH045E36A-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 power choke

Blower housing cutoff plate

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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