Trane S9V2B040U3PSBB Installer's Manual page 20

F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n
Important: When converting the gas piping from the factory default,
the plug must be removed from the new gas piping
location and swapped with the grommet from the default
location. The upflow furnace default is left side gas
piping. The downflow furnace default is right side gas
piping.
Horizontal left furnace with gas piping out left side
Automatic Gas Valve
with Manual Shut-o
1/8" NPT
Test Fitting
Main Manual
Shut-o Valve Ground
Union
Joint
Drip Leg
Horizontal right furnace with gas piping out left side
Gas Line
Grommet
20
Gas Line
Grommet
Main Manual
Shut-o Valve
Ground
1/8" NPT
Union
Test Fitting
Joint
Drip Leg
Automatic Gas
Valve with
Manual Shut-o
Horizontal left furnace with gas piping out right side
1/8" NPT
Test Fitting
Main Manual
Ground
Shut-o Valve
Union
Joint
Drip Leg
Automatic Gas Valve
with Manual Shut-o
Horizontal right furnace with gas piping out right side
Gas Line
Grommet
Gas Line
Grommet
Automatic Gas Valve
with Manual Shut-o
Ground
Main Manual
Union
Shut-o Valve
Joint
Drip Leg
1/8" NPT
Test Fitting
18-CE01D1-1M-EN