Lennox ELITE Series Installation Instructions Manual page 32

Refer to Figure 46 and Figure 48 for condensate trap lo-
cations. Figure 54 shows trap assembly using 1/2" PVC
or 3/4" PVC.
NOTE -
1 - Determine which side condensate piping will exit
length of PVC pipe required to reach available drain.
the cold end header box at the appropriate location
on the side of the unit. Install provided 3/4 NPT street
tape or appropriate pipe dope.
NOTE -
3 - Install the cap over the clean out opening at the base
CONDENSATE TRAP AND PLUG LOCATIONS
(Unit shown in upflow position)
Trap
(same on
right side)
1-1/2 in.
NOTE - In upflow applications where side return
sate trap, filter rack must be installed beyond
condensate trap or trap must be re-located to
avoid interference.
Figure 46
glue all joints. Glue the provided drain trap as
shown in Figure 54. Route the condensate line to
an open drain. Condensate line must maintain a 1/4"
downward slope from the furnace to the drain.
-
Plug
(same on left side)
Page 32
5 - Figure 49 and Figure 51 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 50, Figure 52 and
be a minimum 1" to a maximum 2" length above
the condensate drain outlet connection. Any length
if the combined primary drain line were to become
vent must be a minimum 4" to a maximum 5" length
above the condensate drain outlet connection.
exchanger if the combined primary drain line were to
become restricted.
NOTE -
NOTE -
CAUTION
Do not use copper tubing or existing copper condensate
lines for drain line.
Field Provided Drain Components
Elbow
Tubing
Figure 47
6 - If unit will be started immediately upon completion of
installation, prime trap per procedure outlined in Unit
Start-Up section.
Condensate line must slope downward away from the
trap to drain. If drain level is above condensate trap,
condensate pump must be used. Condensate drain
line should be routed within the conditioned space to
line. If this is not possible, a heat cable kit may be used
on the condensate trap and line. Heating cable kit is
available from Lennox in various lengths; 6 ft. (1.8m) -
kit no. 26K68 and 24 ft. (7.3m) - kit no. 26K69.
Barbed Fitting
Hose Clamp
-