Amana M9S96 Series Installation Instructions Manual page 30

The gas piping may enter the left or right side of the
furnace cabinet. The installer must supply rigid pipe long
enough to reach the outside of the cabinet to seal the grommet
cabinet penetration. A semi-rigid connector to the gas piping
can be used outside the cabinet per local codes. 1/2" NPT
pipe and fittings are required. For models with an "L"
shaped manifold, a 4 1/2" long nipple is required. For
models with a hook shaped manifold, a 2" long nipple is
required.
A semi-rigid connector to the gas piping can be used
outside the cabinet per local codes. From the elbow, the
length of pipe and the fittings required will vary by the side
chosen, location of union and cabinet width. The union
may be placed inside or outside of the cabinet.
Alternate Manifold
Gas Line
Location
Gas Valve
*Ground
Joint
Pipe
Union
*NOTE: Union may be inside furnace cabinet where allowed by local codes.
Figure 37
Manual Shut Off Valve
(upstream from ground joint pipe union)
*Ground
Joint
Pipe Union
Grommet
in Standard
Gas Line
Hole
Drip Leg
*NOTE: Union may be inside furnace cabinet where allowed by local codes.
COUNTERFLOW
Figure 38
Manual Shut Off Valve
Burners
(upstream from
ground joint
pipe union)
*Ground
Joint
Pipe
Union
Drip Leg
Grommet
in Standard
Gas Line
Hole
UPFLOW
Gas Valve
Burners
Grommet in
Standard Gas Line Hole
Burners
Manifold
Alternate
Gas Line
Location
*Ground
Joint
Pipe Union
Plug in
Alternate
Gas Line
Hole
COUNTERFLOW - HORIZONTAL RIGHT
30
Manual Shut Off Valve
Alternate
Union
Location
Drip Leg
Plug in Alternate Gas Line Hole
Plug in Main Gas Line Hole
Gas
Valve
Drain Trap
UPFLOW - HORIZONTAL LEFT
Figure 39
Figure 40
(upstream from
ground joint pipe union)
Manual Shut Off Valve
(upstream from
ground joint
pipe union)