Table of Contents
Advertisement
SP ECIF ICATIONS - GAS H EAT
Usage Data
Number of Gas Heat Stages
Gas Heating
Input - Btuh
Performance
(Two-Stage)
Output - Btuh
Gas Heating
Input - Btuh
1
Performance
(Four-Stage)
Output - Btuh
Temperature Rise Range - °F
Gas Supply Connections
Recommended Gas Supply
Pressure - in. w.g.
Four-stage gas heating is enabled when room sensor, Discharge Air Control, or fresh air tempering mode is selected. (Available when using the CS8500 thermostat or
1
when connected to Building Automation Systems using BACnet, LonTalk, or S-Bus protocols)
HIG H ALTITUD E DERATE
Units may be installed at altitudes up to 2000 feet above sea level without any modification.
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% for each 1000 feet above sea level.
NOTE − This is the only permissible derate for these units.
TWO-STAGE
Gas Heat
Altitude - ft.
Type
(Two-Stage)
Low (L)
Standard (S)
2001 - 4500
Medium (M)
2001 - 4500
High (H)
2001 - 4500
FOUR-STAGE
Gas Heat
Altitude - ft.
1
Type
(Four-Stage)
Low (L)
Standard (S)
2001 - 4500
Medium (M)
2001 - 4500
High (H)
2001 - 4500
Four-Stage Gas Heating is field configured.
1
Model Number
LGM156
LGM180
LGM210
Heat Input Type
Low (L)
First Stage
169,000
Second Stage
First Stage
135,000
Second Stage
First Stage
Second Stage
Third Stage
Fourth Stage
First Stage
135,000
Second Stage
Third Stage
Fourth Stage
15 - 45
Thermal Efficiency
1 in. npt
Natural
LPG/Propane
Gas Manifold Pressure - in. w.g.
Natural Gas
3.4
3.4
3.4
Gas Manifold Pressure - in. w.g.
Natural Gas
3.4
3.4
3.4
Standard (S)
1
2
169,000
N/A
260,000
- - -
N/A
208,000
N/A
84,500
N/A
169,000
N/A
214,000
N/A
260,000
- - -
N/A
- - -
N/A
- - -
N/A
208,000
15 - 45
80.0%
80.0%
1 in. npt
7
7
11
11
LPG/Propane Gas
No adjustment required
9.6
9.6
9.6
LPG/Propane Gas
No adjustment required
9.6
9.6
117,000
9.6
156,000
Page 9
LGM156
LGM180
LGM210
LGM240
LGM300
Medium (M)
2
234,000
360,000
- - -
288,000
117,000
234,000
297,000
360,000
- - -
- - -
- - -
288,000
30 - 60
80.0%
1 in. npt
7
11
Input Rate
Natural Gas or LPG/Propane - Btuh
First
Second
Stage
169,000
249,000
234,000
345,000
312,000
460,000
Input Rate
Natural Gas or LPG/Propane - Btuh
First
Second
Third
Stage
Stage
Stage
84,000
169,000
209,000
234,000
289,000
312,000
386,000
LGM180
LGM210
LGM240
LGM300
High (H)
2
312,000
480,000
- - -
384,000
156,000
312,000
396,000
480,000
- - -
- - -
- - -
384,000
40 - 70
80.0%
1 in. npt
7
11
Stage
Fourth
Stage
249,000
345,000
460,000
Hide quick links:
Advertisement
Table of Contents
