Lennox KGC Series Unit Information page 6

SP EC IFIC ATIONS
Gas Heating
Performance
Recommended Gas Supply Pressure - Nat. / LPG
Gas Supply Pressure Range
Thermal Efficiency at full input.
1
HIGH ALTITU DE D ERATE
NOTE - Units may be installed at altitudes up to 2000 feet above sea level without any modifications.
At altitudes above 2000 feet units must be derated to match gas manifold pressures shown in table below.
At altitudes above 4500 feet unit must be derated 2% (130K through 180K) and 4% (240K) 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.
Heat Input Type
Standard (2 stage)
Medium (2 stage)
High (2 stage)
Number of Gas Heat Stages
Input - Btuh
Output - Btuh
Temperature Rise Range - °F
Minimum air volume - cfm
¹ Thermal Efficiency
Gas Supply Connections
Min. / Max. (Natural)
Altitude Feet
2001 - 4500
2001 - 4500
2001 - 4500
Heat Input Type Standard
1st Stage 84,500
2nd Stage 130,000
2nd Stage 104,000
15-45
2150
80%
3/4 in NPT
Min. / Max. (LPG)
Gas Manifold Pressure
in. w.g.
Natural Gas
1.6 / 3.4
1.6 / 3.4
1.6 / 3.4
Page 6
Medium
2 2
117,000
180,000
144,000
30-60
2250
80%
3/4 in NPT
7 / 11 in. w.g.
4.5 / 10.5 in. w.g.
10.8 / 13.5 in. w.g.
LPG/ Propane
4.4 / 9.7
4.4 / 9.7
4.4 / 9.7
GA S HEAT
High
2
156,000
240,000
194,000
40-70
2600
81%
3/4 in NPT
Input Rate (Btuh)
84,500 / 125,000
117,000 / 173,000
156,000 / 221,000