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SPECIFICATIONS - GAS HEAT
Heat Input Type Standard Medium High
Number of Gas Heat Stages 2 2 2
Gas Heating
Performance
Input - Btuh First Stage 84,500 117,000 156,000
Second Stage 130,000 180,000 240,000
Output - Btuh Second Stage 104,000 144,000 192000
Temperature Rise Range - °F 15-45 30-60 40-70
Thermal Efciency 80% 80% 80%
Gas Supply Connections 3/4 in NPT 3/4 in NPT 3/4 in NPT
Recommended Gas Supply
Pressure - in. w.g.
Natural 7 7 7
LPG/Propane 11 11 11
HIGH ALTITUDE DERATE
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.
NOTE − This is the only permissible derate for these units.
Gas Heat
Type
Altitude
Gas Manifold Pressure
Input Rate
Natural Gas or LPG/Propane
Natural Gas LPG/Propane Gas First Stage Second Stage
ft. In. w.g. In. w.g. Btuh Btuh
Standard 2001-4500 3.4 9.6 84,500 124,000
Medium 2001-4500 3.4 9.6 117,000 172,000
High 2001-4500 3.4 9.6 156,000 230,000
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