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SPECIFICATIONS GAS HEAT
Usage Data Model Number LGT156
LGT180
LGT210
LGT156
LGT180
LGT210
LGT240
LGT300
LGT180
LGT210
LGT240
LGT300
Low (L) Standard (S) Medium (M) High (H)
One
¹ Gas Heating
Performance
First Stage
- - -
- - -
- - -
First Stage - - - - - - - - -
- - - - - - - - - - - -
- - - - - - - - - - - -
- - -
First Stage
- - - - - - - - - - - -
1 in. NPT 1 in. NPT 1 in. NPT 1 in. NPT
11 11 11 11
1
HIGH ALTITUDE DERATE
NOTE - Units may be installed at altitudes up to 2000 feet above sea level without any modication.
At altitudes above 2000 feet, units must be derated to match gas manifold pressures shown
in table below.
At altitudes above 4500 feet units must be derated 4% for each 1000 feet above sea level.
NOTE − This is the only permissible derate for these units.
Refer to the Installation Instructions for more detailed information.
ONE STAGE HEAT
No Adjustment Required
TWO STAGE HEAT
Heat Input Type Altitude Feet
Gas Manifold Pressure - in. w.g. Input Rate (Btuh)
Natural Gas LPG/Propane Gas First Stage Second Stage
FOUR STAGE HEAT
¹ Heat Input Type Altitude Feet
Gas Manifold Pressure - in. w.g. Input Rate (Btuh)
Natural Gas LPG/Propane Gas
First
Stage
Second
Stage
Third
Stage
Fourth
Stage
1
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