Amana M9C96 Series Manual page 16

Combustion Air Intake Options (See Figure 12)
The RF000142 coupling (Figure 8) can be secured directly
to the furnace intake coupling if condensation is a concern.
If the RF000142 is used on the combustion air inlet, it must
be installed with the arrow pointing up. It should be noted,
the combustion air will actually be moving in a direction
opposite of the arrow on the RF000142 coupling. It must
have a field supplied, trapped drain tube free-draining to
proper condensate disposal location. A loop in the drain
tube can serve as a trap. The unused RF000142 drain fitting
should be capped. A tee installed in the intake pipe is also an
acceptable method of catching condensation. It must have
a field supplied, trapped drain tube or pipe, free-draining to
proper condensate disposal location. A loop in the drain tube
can serve as a trap.
COMBUSTION AIR INTAKE OPTIONS
Be sure not to damage internal wiring or other
components when reinstalling coupling and
screws.
NOTE: For installations at or above 7,000 feet
altitude, use 3" venting.
Figure 12
CAUTION
Vent/Flue Pipe Terminations
Horizontal Termination (Single Pipe)
Above Highest Anticipated Snow Level
6" MAX
4" MIN
Standard Horizontal Terminations (Dual Pipe)
DOWN VENTING UPFLOW MODEL FURNACES ONLY
Combustion Air Pipe
Field Supplied
Drain Tee on Vent Pipe
All piping and fittings must be joined per material manufacturers specifications
to prevent separation and flue gas leaks.
16
12" MIN.
VENT/FLUE TEE ( OPTIONAL)
or
45° ELBOW
TURNED DOWN or
90° ELBOW TURNED
DOWN
Figure 13
12" MIN. TO GRADE OR
HIGHEST ANTICIPATED
SNOW LEVEL
Figure 14
Use alternate vent
& combination
air locations
Vent Pipe
Floor
1/4" per foot min.
slope to furnace
Condensate trapped
to prevent flue gas from escaping
and routed to field supplied
condensate disposal
Figure 15
6' Max.