18-CE12D1-1D-EN
21
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-off
Main Manual
Shut-off Valve
Ground
Union
Joint
Drip Leg
Gas Line
Grommet
1/8” NPT
Test Fitting
Horizontal left furnace with gas piping out right side
Automatic Gas Valve
with Manual Shut-off
Main Manual
Shut-off Valve
Ground
Union
Joint
Drip Leg
Gas Line
Grommet
1/8” NPT
Test Fitting
Horizontal right furnace with gas piping out left side
Automatic Gas
Valve with
Manual Shut-off
Main Manual
Shut-off Valve
Ground
Union
Joint
Drip Leg
Gas Line
Grommet
1/8” NPT
Test Fitting
Horizontal right furnace with gas piping out right side
Automatic Gas Valve
with Manual Shut-off
Main Manual
Shut-off Valve
Ground
Union
Joint
Drip Leg
Gas Line
Grommet
1/8” NPT
Test Fitting