508151-01
Issue 2104
Page 45 of 72
Condensate Piping
This unit is designed for either right- or left-side exit of
condensate piping. Refer to Figure 39 and Figure 40 for
condensate trap locations.
Figure 39. Condensate Trap and Plug Locations
Figure 40. Condensate Trap Location
(shown with right side exit of condensation)
1.
Determine which side condensate piping will exit the
unit, location of trap, field-provided fittings and length
of PVC pipe required to reach available drain.
2.
For furnaces with a 1/2” drain connection use a 3/8
allen wrench and remove plug (Figure 39) from the
cold end header box at the appropriate location on the
side of the unit. Install field-provided 1/2 NPT male
fitting into cold end header box. For furnaces with
a 3/4” drain connection use a large flat head screw
driver or a 1/2” drive socket extension and remove
plug. Install provided 3/4 NPT street elbow fitting into
cold end header box. Use Teflon 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 45 and
4.
Install drain trap using appropriate PVC fittings, glue
all joints. Glue the provided drain trap as shown in
Figure 45 and Figure 46. Route the condensate line to
an open drain. Condensate line must maintain a 1/4”
downward slope from the furnace to the drain.
When combining the furnace and evaporator coil
drains together, the A/C condensate drain outlet must
be vented to relieve pressure in order for the furnace
pressure switch to operate properly.
IMPORTANT
5.
Figure 42 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 43. The field provided vent must
be a minimum 1” to a maximum 2” length above the
condensate drain outlet connection.
NOTE:
If necessary the condensate trap may be
installed up to 5’ away from the furnace. Use PVC pipe
to connect trap to furnace condensate outlet. Piping
from furnace must slope down a minimum of 1/4” per
ft. toward trap.
NOTE:
Appropriately sized tubing and barbed fitting
may be used for condensate drain. Attach to the drain
on the trap using a hose clamp. See Figure 41.
Tubing
Hose Clamp
Barbed Fitting
Elbow
Figure 41.
Field-Provided Drain Components