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506725-01 Page 37 of 48
Issue 1109
Natural
to
LP/Propane
LP/Propane
to
Natural
High Altitude
Natural
Burner Orifice
Kit
High Altitude
LP/Propane
Burner Orifice
Kit
All 68W75*† 73W80* 51W01 68W70*†
* Conversion requires installation of a gas valve regulator spring which is provided with the gas conversion kit.
† LP kit includes low line pressure switch.
Unit
Size
0 - 4,500 ft
(0 - 1,373 m)
4,501 - 7,500 ft
(1,373 - 2,286 m)
7,501 - 10,000 ft
(2,286 - 3,038 m)
All No Change No Change 74W91
Pressure switch is factory set. No adjustment necessary.
All models use the factory installed pressure switch from 0 - 7,500 feet.
Unit
Size
0 - 4,500 ft
(0 - 1,373 m)
4,501 - 7,500 ft
(1,373 - 2,286 m)
7,501 - 10,000 ft
(2,286 - 3,038 m)
045 No Change No Change 74W90
070 No Change 77W43 73W22
090 No Change 77W42 73W22
110 No Change 77W43 73W22
135 No Change 77W42 73W22
Pressure switch is factory set. No adjustment necessary.
All models use the factory installed pressure switch from 0 - 4,500 feet.
TABLE 14
A95 and 95G1 Pressure Switches at Varying Altitudes
0 - 7,500 ft
(0 - 2,286 m)
7,501 - 10,000 ft
(2,286 - 3,038 m)
Unit
Size
Burner Orifice Conversion Kits at Varying Altitudes
A93 and 92G1 Pressure Switches at Varying Altitudes