Repair Parts List - Lennox DAVE SIGNATURE SL280DFV Installation Instructions Manual

Cleaning the Burners
NOTE - Use papers or protective covering in front of the
furnace during cleaning.
1 - Turn off both electrical and gas power supplies to
furnace.
2 - Label the wires from gas valve, rollout switches,
primary limit switch and make-up box then
disconnect them.
3 - Disconnect gas supply piping. Remove the four
screws securing the burner manifold assembly to
the vestibule panel and remove the assembly from
the unit.
4 - Remove 4 screws securing burner box and remove
burner box.
5 - To clean burners, run a vacuum cleaner with a soft
brush attachment over the face of burners. Visually
inspect inside the burners and crossovers for any
blockage caused by foreign matter. Remove any
blockage.
6 - Reinstall burner box, manifold assembly and
burner box cover.
7 - 8- Reconnect all wires.

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: SL280DF070V36A. 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
Two-stage, variable speed integrated control
Door interlock switch
Circuit breaker
Blower Parts
Blower wheel
Blower housing
Motor
Motor electronics
Power choke (1 hp only)
Motor mounting frame
Blower housing cutoff plate
8 - Reconnect gas supply piping.
9 - Turn on power and gas supply to unit.
10 - Set thermostat and check for proper operation.
11 - Check all piping connections, factory and field, for
gas leaks. Use a leak detecting solution or other
preferred means.
Some soaps used for leak detection are corrosive to
certain metals. Carefully rinse piping thoroughly after
leak test has been completed. Do not use matches,
candles, flame or other sources of ignition to check for
gas leaks.
12 - If a leak is detected, shut gas and electricity off and
repair leak.
13 - Repeat steps 12 and 13 until no leaks are detected.
14 - 15- Replace access panel.
Heating Parts
Flame Sensor
Heat exchanger assembly
Gas manifold
Two-speed combustion air inducer
Two-stage gas valve
Main burner cluster
Main burner orifices
Pressure switch
Ignitor
Primary limit control
Flame rollout switch
Secondary limit
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CAUTION