Page 32
Condensate Piping
This unit is designed for either right- or left-side exit of
condensate piping in upow applications. In horizontal
applications, the condensate trap must extend below the
unit. An 8” service clearance is required for the conden-
sate trap. Refer to gures 46 and 48 for condensate trap
locations. Figure 54 shows trap assembly using 1/2” PVC
or 3/4” PVC.
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.
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 (gure 46) 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.
NOTE - Cold end header box drain plugs are facto-
ry installed. Check the unused plug for tightness to
prevent leakage.
3 - I nstall the cap over the clean out opening at the base
of the trap. Secure with clamp. See gure 54.
4 - Install drain trap using appropriate PVC ttings, glue
all joints. Glue the provided drain trap as shown in
gure 54. Route the condensate line to an open drain.
Condensate line must maintain a 1/4” downward
slope from the furnace to the drain.
5 - Figures 49 and 50 show the furnace and evaporator
coil using a separate drain. If necessary the
condensate line from the furnace and evaporator coil
can drain together. See gures 51, 52 and 53. Upow
furnace (gure 52) - In upow furnace applications
the eld provided vent must be a minimum 1” to a
maximum 2” length above the condensate drain
outlet connection. Any length above 2” may result in
a ooded heat exchanger if the combined primary
drain line were to become restricted.
Horizontal furnace (gure 53) - In horizontal furnace
applications the eld provided vent must be a minimum
4” to a maximum 5” length above the condensate drain
outlet connection. Any length above 5” may result in a
ooded heat exchanger if the combined primary drain
line were to become restricted.
CONDENSATE TRAP AND PLUG LOCATIONS
(Unit shown in upflow position)
NOTE - In upflow applications where side return
sate trap, filter rack must be installed beyond
condensate trap or trap must be re-located to
Trap
(same on
right side)
Plug
(same on left side)
1-1/2 in.
Rubber
Grommet
FIGURE 46
NOTE - In horizontal applications it is recommended
to install a secondary drain pan underneath the unit
and trap assembly.
NOTE - Appropriately sized tubing and barbed t-
ting may be used for condensate drain. Attach to the
drain on the trap using a hose clamp. See gure 47.
Field Provided Drain Components
Tubing
Hose Clamp
Barbed Fitting
Elbow
FIGURE 47
CAUTION
Do not use copper tubing or existing copper condensate
lines for drain line.
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