Rheem GF902U Series Installation Instructions Manual page 34

REVERSING THE TRAP
UPFLOW UNITS
The trap may be moved to the right
side for right side drainage. Open the
knockout for the drain on the right
side of the cabinet. Remove the
bracket holding the trap from the left
side. Seal the left side drain hole with
a plug provided in the cloth bag with
the furnace. Position the mounting
bracket and trap so that the drain
elbow is centered in the hole on
the right. See Figure 30.
1
Drill two / " holes in the cabinet to
8
mount the bracket. Mount the trap
and bracket to the right side with the
drain elbow pointing through the
knockout. Connect the / -in. pipe and
1
2
tee as noted above. Route the drain
hoses behind the control box, cut to
the appropriate length, and connect to
the trap with hose clamps. Fill trap
with water.
IMPORTANT: Do not allow any sags
or kinks in the hoses. This prevents
proper condensate flow.
IMPORTANT: Do not connect into
a common drain line with an air
conditioner evaporator coil drain. A
blocked or restricted drain line can
result in overflow of the coil pan and
negate the furnace blocked drain
shutoff control.
DOWNFLOW MODELS
IMPORTANT: There are two options
when choosing a height for the
condensate riser:
CONDENSATE OVERFLOW: With a
3
1 ⁄ inch riser installed above the tee,
4
a blocked drain will result in overflow
from the riser.
FURNACE SHUTDOWN: To cause
the furnace to shut down when a
blocked drain is present, install a riser
1
which is a minimum of 5 ⁄
2
furnace is installed in an attic,
crawlspace or other area where
freezing temperatures may occur, the
furnace drain can freeze while shut
off for long periods of time. Provisions
must be made to prevent freezing of
condensate.
Use a solvent cement that is
compatible with PVC material.
To convert downflow models to left-
hand drain, a kit (RXGY-H01) must
be ordered from the distributor. The
kit includes a 24" piece of 1/2" black
PVC pipe, a 2-9/16" length of black
hose, a 2" rubber grommet, a 1-5/8"
plug and instructions. Note the
location of the alternate drain hole as
shown in Figure 32.
To convert to left side drainage,
remove the long molded hose from
the trap. Remove the double-elbow
black molded hose from the trap and
exhaust transition and discard.
Remove the trap from its mounting
bracket, rotate it 180 degrees and
mount in place with the drainage
elbow pointing to the left. Reattach
34
FIGURE 30
UPFLOW OPPOSITE SIDE CONDENSATE TRAP CONNECTION
PROPER DRAIN SLOPE REQUIRED
SHEETMETAL IFC
MOUNTING PLATE
FIGURE 31
DOWNFLOW CONDENSATE DRAIN
". If the
CONDENSATE TRAP
the long black molded hose. Use the 2-
9/16" length of black hose included in
the RXGY-H01 kit between the trap
and exhaust transition. Clamp hoses
tight with white nylon clamps.
Remove the plug from the 2" alternate
drain hole (see Figure 32) and replace
it with the 2" rubber grommet supplied
in the RXGY- H01 downflow alternate
drain kit. Also, remove the 1-5/8"
grommet supplied in the primary drain
hole and replace it with the 1-5/8"
diameter plug that is also supplied in
the RXGY-H01 downflow alternate
drain kit. Both the hole-plug and
grommet must be in place to insure a
good seal in the burner compartment.
A length of 1/2" black PVC pipe is also
provided in the RXGY-H01 downflow
(NO KINKS ALLOWED)
CONDENSATE TRAP
DRAIN LINE
NEUTRALIZER CARTRIDGE
(OPTIONAL)
CUT DRAIN HOSES AS
REQUIRED
AND CONNECT TO
INLETS ON TOP
OF CONDENSATE
TRAP
DRAIN
EXTENSION
TO FLOOR
DRAIN
NOTE:
DRAIN VENT NEEDS
TO BE ABOVE
COLLECTOR BOX
DRAIN SPOUT.
MINIMUM HEIGHT
OPEN TOP
OVERFLOW LINE
(REQUIRED ONLY WHEN
OPTIONAL NEUTRALIZER
CARTRIDGE IS USED.)
TO FLOOR DRAIN OR CONDENSATE PUMP
alternate drain kit. Glue one end of
the pipe to the elbow in the trap. Cut
the pipe so that it extends through
the alternate drain hole in the left
side of the cabinet one inch.
Connect the 1/2" PVC tee (supplied
with the furnace) to the pipe with a 1-
3/4" riser. Use the 1-5/8" plug
supplied in the RXGY-H01 downflow
alternate drain kit to seal the right
side drainage hole.
IMPORTANT: Do not connect into a
common drain line with an air
conditioner evaporator coil drain
located above the furnace. A
blocked or restricted drain line can
result in overflow of the coil pan and
negate the furnace blocked-drain
shutoff control.
DRAIN
RISER
TEE
A039407
a103101