Lennox EL296UHV Series Unit Information page 83

TABLE 28
GAS METER CLOCKING CHART
Seconds for One Revolution
EL296
Natural
Unit
1 cu ft
Dial
-045 80
-070 55
-090 41
-110 33
-135 27
Natural-1000 btu/cu ft LP-2500 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.
EL296UH Unit
045, 070
-1 through -5 Units
090, 110, 135
-1 through -4 Units
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
110 136
82 102
66 82
54 68
Manifold and Supply Line Pressure 0-10,000ft.
Gas
Natural
LP/Propane
G- Proper Combustion
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 29 shows acceptable com-
bustions. The maximum carbon monoxide reading should
not exceed 100 ppm.
400
272
EL296
204
Model
164
045
136
070
090
110
135
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 30 or TABLE 31
for manifold pressures. See TABLE 32 for gas conversion
and pressure switch kits.
TABLE 30
Manifold Pressure in. wg.
Low Fire High Fire
1.7 3.5
4.5 10.0
Page 83
TABLE 29
CO % For Nat
2
Low Fire High Fire Low Fire
5.4 - 6.4 7.5 - 8.5 6.4 - 7.4
5.3 - 6.3 7.4 - 8.4 6.3 - 7.3
5.8 - 6.8 7.6 - 8.6 6.8 - 7.8
6.1 - 7.1 8.0 - 9.0 7.1 - 8.1
6.1 - 7.1 7.8 - 8.8 7.1 - 8.2
Supply Line Pressure in. wg.
Min
4.5
11.0
CO % For L.P
2
High Fire
8.8 - 9.8
8.7 - 9.7
8.9 - 9.9
9.3 - 10.3
9.1 - 10.1
Max
13.0
13.0