Proper Combustion; High Altitude - Lennox ELITE Series 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. The maximum carbon
monoxide reading should not exceed 100 ppm.
TABLE 16
EL196 Unit
CO % Nat
2
-045
-070
-090
EL196
Gas
Unit
Natural
All
Models
L.P. Propane
NOTE - A natural to L.P. propane gas changeover kit is necessary to convert this unit. Refer to the changeover kit installation instruction for the
conversion procedure.
Conversion Kit and Pressure Switch Requirements at Varying Altitudes
Natural to LP/
Propane
EL196
Unit
0 - 7500 ft
(0 - 2286m)
-045
-070 *11K49
-090
* Conversion requires installation of a gas valve manifold spring which is provided with the gas conversion kit. Pressure switch is
factory set. No adjustment necessary. All models use the factory-installed pressure switch from 0-4500 feet (0-1370 m).
CO % LP
2
7.2 - 8.2 8.6 - 9.6
Manifold and Supply Line Pressure 0-10,000ft.
Manifold Pressure in. wg.
0 - 4500 ft 4501 - 5500 ft
3.5 3.3
10.0 9.4

High Altitude

Natural Burner
Orifice Kit
7501 - 10,000 f t
(2286 - 3038m)
73W37
High Altitude Information
NOTE - In Canada, certification for installations at eleva-
tions over 4500 feet (1372 m) is the jurisdiction of local
authorities.
Units may be installed at altitudes up to 10,000 ft. above
sea level. See table 17 for de-rate manifold values. Units
installed at altitude of 7501 - 10,000 feet require an orifice
change. Units installed at altitude of 4501 - 10,000 feet
require a pressure switch change which can be ordered
separately. Table 18 lists conversion kit and pressure
switch requirements at varying altitudes. The combustion
air pressure switch is factory-set and requires no adjust-
ment.
TABLE 17
5501 - 6500 ft 6501 - 7500 ft 7501 - 10,000 ft
3.2 3.1
9.1 8.9
TABLE 18
High Altitude
LP/Propane Burner
Orifice Kit
7501 - 10,000 ft
(2286 - 3038m)
*11K44
Page 41
Supply Line Pressure
0 - 10000 ft.
3.5 4.5
10.0 11.0
High Altitude Pressure Switch
4501 - 7500 ft 7501 -10,000 ft
(1373 - 2286m) (2286 - 3048m)
No Change
17V95
11U70
in. w.g.
13.0
13.0
11U65
11U67
11U64