33
Gas Piping Connections
Alternate
Gas Line
Location
Gas Valve
Burners
Manual Shut Off Valve
(upstream from
ground joint
pipe union)
Drip Leg
Grommet
in Standard
Gas Line
Hole
*Ground
Joint
Pipe
Union
*Ground
Joint
Pipe
Union
*NOTE: Union may be inside furnace cabinet where allowed by local codes.
Manifold
UPFLOW
Figure 36
Alternate
Gas Line
Location
Plug in
Alternate
Gas Line
Hole
Gas Valve
Burners
Manual Shut Off Valve
(upstream from ground joint pipe union)
Drip Leg
Grommet
in Standard
Gas Line
Hole
*Ground
Joint
Pipe Union
*Ground
Joint
Pipe Union
*NOTE: Union may be inside furnace cabinet where allowed by local codes.
COUNTERFLOW
Figure 37
Manual Shut Off Valve
(upstream from
ground joint
pipe union)
When gas line is in the alternate location, swap the position of
the plug and grommet.
UPFLOW - HORIZONTAL LEFT
Figure 38
Drip Leg
Plug in Main Gas Line Hole
Alternate
Union
Location
Manual Shut Off Valve
(upstream from
ground joint pipe union)
Gas
Valve
Burners
Drain Trap
Manifold
Plug in Alternate Gas Line Hole
Grommet in
Standard Gas Line Hole
Drip leg may terminate with a 1/2” x 1/8” pipe plug to
accommodate line gas pressure measurement.
COUNTERFLOW - HORIZONTAL RIGHT
Figure 39
