Lennox EL195UHE - VI-MAINTENANCE PROCEDURES; ROUTINE CHECKS: BLOWER, FILTERS, PIPING, AND ELECTRICAL; WINTERIZING, CONDENSATE TRAP CARE, AND HEAT EXCHANGER CLEANING

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TABLE 16
Manifold and Supply Line Pressure 0-10,000ft.
EL195
Unit
Gas
Manifold Pressure in. wg. Supply Line Pressure
in. w.g.
0 - 10000 ft.
0 - 4500 ft 4501 - 5500 ft 5501 - 6500 ft 6501 - 7500 ft 7501 - 10,000 ft
All
Models
Natural 3.5 3.3 3.2 3.1 3.5 4.5 13.0
L.P. Propane 10.0 9.4 9.1 8.9 10.0 11.0 13.0
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.
TABLE 17
Conversion Kit and Pressure Switch Requirements at Varying Altitudes
EL195 Model
Natural to LP/
Propane
High Altitude
Natural Burner
Orice Kit
High Altitude
LP/Propane Burner
Orice Kit
High Altitude Pressure Switch
0 - 7500 ft
(0 - 2286m)
7501 - 10,000 f t
(2286 - 3038m)
7501 - 10,000 ft
(2286 - 3038m)
4501 - 7500 ft
(1373 - 2286m)
7501 -10,000 ft
(2286 - 3048m)
-030 13X54 14C90 14C91 No Change 11U65
-045
*11K49 73W37 *11K44
No Change 11U65
-070 11U71 11U64
-090 11U70 11U64
-110 11U71 11U64
-135 11U70 11U64
* 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).