Proper Combustion; High Altitude; Gas Meter Clocking Chart - Lennox EL296DF045XV36B Unit Information

NOTE- To obtain accurate reading, shut off all other gas
appliances connected to meter.
TABLE 25

GAS METER CLOCKING CHART

Seconds for One Revolution
Natural
EL296
Unit 1 cu ft
Dial
-045 80
-70 55
-90 41
-110 33
-135 27
Natural-1000 btu/cu ft
IMPORTANT
For safety, shut unit off and remove manometer as
soon as an accurate reading has been obtained.
Take care to replace pressure tap plug.
G- Proper Combustion
LP/Propane Conversion Kit and Pressure Switch Requirements at Varying Altitudes
Natural to
LP/Propane
EL296
Unit
0 - 7500 ft
(0 - 2286m)
-045
-070
*11K51
-090
-110
* 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).
EL296
Unit
All Sizes
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.
LP
2 cu ft 1 cu ft 2 cu ft
Dial Dial DIAL
160 200 400
110 136 272
82 102 204
66 82 164
54 68 136
LP-2500 btu/cu ft

High Altitude

Natural Burner
Orifice Kit
7501 - 10,000 ft
(2286 - 3038m)
73W37
Manifold Pressure Settings
Manifold Pressure in.wg.
Gas
Low Fire
Natural 1.7
LP/propane 4.9
Furnace should operate minimum 15 minutes with correct
manifold pressure and gas flow rate before checking com­
bustion. See sections E- and F-. Take combustion sample
beyond the flue outlet. Table 26 shows acceptable com­
bustions. The maximum carbon monoxide reading should
not exceed 100 ppm.
CO
EL296
Unit
Low Fire
045 5.6 - 6.6
070 5.5 - 6.5
090 5.9 - 6.9
110 6.3 - 7.3
The maximum carbon monoxide reading should not exceed 100ppm.
H- High Altitude
The manifold pressure, gas orifice and pressure switch
may require adjustment or replacement to ensure proper
operation at higher altitudes. See table 27 for gas conver­
sion and pressure switch kits. See table 28 for manifold
pressures
TABLE 27
High Altitude
LP/Propane Burner
Orifice Kit
7501 - 10,000 ft
(2286 - 3038m)
*11K46
TABLE 28
High Fire
3.5
10.0
Page 57
TABLE 26
% CO %
2 For Nat 2
High Fire Low Fire
7.8 - 8.8 6.6 - 7.6
7.3 - 8.3 6.5 - 7.5
7.8 - 8.8 6.9 - 7.9
8.2 - 9.2 7.3 - 8.3
High Altitude Pressure Switch
4501 - 7500 ft 7501 -10,000 ft
(1373 - 2286m) (2286 - 3048m)
14A57 14A50
14A55 14A56
14A54 14A53
14A46 14A51
Supply Line Pressure in. w.g.
Min
4.5
11.0
For L.P
High Fire
9.1 - 10.1
8.6 - 9.6
9.1 - 10.1
9.5 - 10.5
Max
10.5
13.0