Proper Combustion; High Altitude; Repair Parts Lsit - Lennox DAVE SIGNATURE SL297UHNV Installation Instructions Manual

Proper Combustion

Furnace should operate minimum 15 minutes with correct
manifold pressure and gas flow rate before checking com-
bustion. Take combustion sample beyond the flue outlet
and compare to the tables below.
TABLE 22
CO2 Nat
Model
High Fire
-040 6.3-7.8
-060 6.5-8.2
-080 7.2-8.4
The maximum carbon monoxide reading should not
exceed 100ppm.
Repair Parts List
The following repair parts are available through Lennox dealers. When ordering parts, include the complete furnace model
number listed on the CSA nameplate -- Example: SL297UH040NV36B-01. All service must be performed by a licensed
professional installer (or equivalent), service agency, or gas supplier.
Cabinet Parts
Outer access panel
Blower access panel
Top Cap
Control Panel Parts
Transformer
Integrated control board
Door interlock switch
Blower Parts
Blower wheel
Motor
Motor mounting frame
Blower housing cutoff plate
CO2 LP
Low Fire High Fire Low Fire
6.3-7.8 n/a
6.5-8.2 9.3-10.0 9.3-10.0
7.2-8.4 9.5 -10.2 9.5-10.2

High Altitude

Units are NOT approved for installations over 4500 ft.
n/a
Heating Parts
Flame Sensor
Heat exchanger assembly
Gas manifold Assembly
Combustion air inducer
Gas valve
Burner assembly
Pressure switch
Ignitor
Primary limit control
Rollout switch
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