507405-05 Page 31 of 72Issue 1621
Condensate Piping
This unit is designed for either right or left side exit of
condensate piping in downow applications. Refer to
Figure 43 for condensate trap locations.
NOTE: If necessary the condensate trap may be installed
up to 5 feet away using PVC pipe from the furnace. Piping
from furnace must slope down a minimum of 1/4” per ft.
toward trap.
1. Determine which side condensate piping will exit the
unit, location of trap, eld-provided ttings and length
of PVC pipe required to reach available drain.
2. Use a large at head screw driver or a 1/2” drive socket
extension and remove plug (Figure 43) from the cold
end header box at the appropriate location on the side
of the unit. Install provided 3/4 NPT street elbow tting
into cold end header box. Use Teon tape or appropriate
pipe dope.
3. Install the cap over the clean out opening at the base
of the trap. Secure with clamp. See Figure 48.
4. Install drain trap using appropriate PVC ttings, glue
all joints. Glue the provided drain trap as shown in
Figure 48. Route the condensate line to an open drain.
Condensate line must maintain a 1/4” downward slope
from the furnace to the drain.
Figure 43
Condensate Trap and Plug Locations
Do Not use copper tubing or existing copper condensate
lines for drain line.
CAUTION
NOTE: Vinyl tubing may be used for condensate drain.
Tubing must be 1-1/4” ODX1”ID and should be attached
to the drain on the trap using a hose clamp.
5. Figure 45 shows the furnace and evaporator coil using
a separate drain. If necessary, the condensate line from
the furnace and evaporator coil can drain together. See
Figure 46. The eld provided vent must be a minimum
1” to a maximum 2” length above the condensated drain
outlet connection.
6. If unit will be started immediately upon completion of
installation, prime trap per procedure outlined in Unit
Start-Up section.
Figure 44
Condensate Trap Location
(shown with right side exit of condensation)
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