LG GEN2 Series Installation And Operation Manual page 61

Reference - Venting Connection Locations
200-300MBH
COMBUSTION AIR INLET
EXHAUST OUTLET
B
A
Furnace Size
Model
(MBH)
100
150
AR-DR12 /
200
AR-DE12
250
300
300
AR-DR22 /
400
AR-DE22
500
COMBUSTION AIR INLET
EXHAUST OUTLET
500MBH
COMPRESSOR CONTROL CENTER
ACCESS ACCESS
IG FURNACE
ACCESS
C
D
A B
14 23.5
15.2 23.7
14.8 23.3
14.9 23.6
AR-DE12
COMBUSTION AIR INLET
EXHAUST OUTLET
B
AR-DE22
B
A
IG Venting Location
C D
20.5 20.5
31.5 35.9
38.1 44.1
25.2 57.1
100-150MBH
COMPRESSOR / CONTROL CENTER
ACCESS
IG FURNACE
ACCESS
A
C
D
300-400MBH
COMPRESSOR CONTROL CENTER
ACCESS ACCESS
IG FURNACE
ACCESS
C
D
Flue Connection Size (diameter in inches)
Standard 2-Pipe/Concentric
Exhaust Exhaust
4
4
6
6
6
6
6
6
COMBUSTION AIR INLET
EXHAUST OUTLET
Intake
4 4
4 4
6 6
6 6
6 6
6 6
6 6
6 6