27
FILLING THE TRAP
FILL THE TRAP ASSEMBLY WITH
WATER BEFORE OPERATING THE
FURNACE.
Do this by removing the
drain hose from the trap or from the
connection to the secondary coil.
Pour about a cup of water into the
vent trap. Any excess water flows into
the house drain when the trap is full.
NOTE:
Fill the trap assembly with
water every heating season.
IMPORTANT:
When changing to the
left side, interchange the rubber
bushing on the right side with the hole
plug on the left side. The hole plug
must be in place to assure that the
control compartment is sealed.
FIGURE 22
UPFLOW OPPOSITE SIDE CONDENSATE TRAP CONNECTION
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 22.
Drill two
1
/
8
” holes in the cabinet to
mount the bracket. Mount the trap
and bracket to the right side with the
drain elbow pointing through the
knockout. Connect the
1
/
2
-in. pipe and
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.
CUT DRAIN HOSES AS
REQUIRED
AND CONNECT TO
INLETS ON TOP
OF CONDENSATE
TRAP
DRAIN
RISER
TEE
DRAIN
EXTENSION
PROPER DRAIN SLOPE REQUIRED
(NO KINKS ALLOWED)
CONDENSATE TRAP
SHEETMETAL IFC
MOUNTING PLATE
TO FLOOR
DRAIN
A039407
A length of
1
/
2
-in. PVC pipe is
provided for left hand drainage. Glue
one end of the pipe to the elbow in
the trap. Cut the pipe so that it
extends through the left cabinet side
one inch. Connect the
1
/
2
-in. tee to the
pipe with a riser and drain tube as
listed above. Use the plastic plug
from the left side drainage knockout
to seal the right side drainage
knockout.
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.
