17
Figure 11
1.
Remove the four screws from the vent pipe flange
on top the furnace.
2.
Remove the internal elbow, vent pipe & gasket.
3.
Cut the internal vent pipe 2 1/2” from the flange.
Discard the un-flanged section.
4. Remove the 3” plastic plug (in line with the inducer
outlet) and insert it in the space vacated by removal
of the internal vent pipe.
5. Install the RF000142 drain coupling with arrow
facing up, on the draft inducer outlet.
6.
Insert the 2 ½” flanged section of pipe with gasket
through the 3” hole and connect to RF000142 drain
coupling. Secure it with gear clamp provided.
7.
Use the four self-tapping screws removed in step 1
to secure flange to cabinet.
8. Connect drain hose to the uncapped port on the
RF000142 coupling, refer to page xx, section
entitled “Horizontal Installation with Left Side Down
– Alternate” for drain connection details
When using the alternate venting location, either in
a horizontal left side down installation or a vertical
installation using down – venting, the alternate combustion
air opening can be used. A locating dimple is located on
the right side of the furnace cabinet. The locating dimple is
1-7/8” measured from the front edge of the cabinet in line
with the knock out.
To use the alternate combustion air location:
1.
Remove screws and combustion air flange and
gasket from cabinet.
2. Insert the 3” cabinet plug from the drain bag
assembly in the unused combustion air hole.
3. Drill a pilot hole at the cabinet dimple (size dictated
by knockout tool used).
4.
Use a knockout tool to create a 3” diameter hole.
5.
Secure the combustion air flange & gasket to the
furnace cabinet using the self-tapping screws
removed in step 1.
T
HE
RUBBER
ELBOW
IS
NOT
DESIGNED
TO
SUPPORT
A
LOAD
. W
HEN
THE
RUBBER
ELBOW
IS
MOUNTED
EXTERNALLY
TO
THE
FURNACE
CABINET
,
EXTREME
CARE
MUST
BE
TAKEN
TO
ADEQUATELY
SUPPORT
FIELD
-
SUPPLIED
VENT
/
FLUE
PIPING
,
AS
DAMAGE
CAN
RESULT
IN
LEAKS
CAUSING
BODILY
INJURY
OR
DEATH
DUE
TO
EXPOSURE
TO
FLUE
GASES
,
INCLUDING
CARBON
MONOXIDE
WARNING
B
E
SURE
NOT
TO
DAMAGE
INTERNAL
WIRING
OR
OTHER
COMPONENTS
WHEN
REINSTALLING
COUPLING
AND
SCREWS
.
CAUTION
Vent Pipe
Use alternate vent
& combination
air locations
Combustion Air Pipe
Field Supplied
Drain Tee on Vent Pipe
Condensate trapped
to prevent flue gas from escaping
and routed to field supplied
condensate disposal
1/4” per foot min.
slope to furnace
6’ Max.
Floor
Basem
ent / C
rawlsp
ace
DOWN VENTING UPFLOW MODEL FURNACES ONLY
All piping and fittings must be joined per material manufacturers specifications
to prevent separation and flue gas leaks.
Figure 12
Pipe Termination
Products of combustion must always be vented outside. A
vent pipe must never terminate in an attic, crawl space, or
any other part of a dwelling. Follow the vent pipe & intake
pipe termination requirements listed below as well as all
applicable local, State and National codes.
All terminations (vent and/or intake) must be located at
least 12” above ground level or the anticipated snow level.
All vent terminations (non-direct and direct vent) must
terminate at least 3 feet above any forced air inlet located
within 10 feet.
The vent termination of a non-direct vent application must
terminate at least 4 feet below, 4 feet horizontally from, or
1 foot above any door, window, or gravity air inlet into any
building.
