Lennox EL296UHVX Series Unit Information page 68

applications the field provided vent must be a mini­
mum 4" to a maximum 5" length above the condensate
drain outlet connection. Any length above 5" may re­
sult in a flooded heat exchanger if the combined pri­
mary drain line were to become restricted.
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 fitting
may be used for condensate drain. Attach to the drain
on the trap using a hose clamp. See figure 43.
Field Provided Drain Components
Elbow
Tubing
FIGURE 43
CAUTION
Do not use copper tubing or existing copper conden­
sate lines for drain line.
6 - If unit will be started immediately upon completion of in­
stallation, 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
avoid freezing of condensate and blockage of drain
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; 24 ft. (7.3m) - kit no. 26K69; and 50 ft.
(15.2m) - kit no. 26K70.
Barbed Fitting
Hose Clamp
CONDENSATE TRAP LOCATIONS
(Unit shown in upflow position with remote trap)
Min. 1" Above Condensate
*Piping from furnace must slope down a minimum of
1/4" per ft. toward trap.
EL29UHV With Evaporator
Coil Using A Separate Drain
Trap At Coil is Option
Field Provided Vent
(1" min. 2" max. above
condensate connection)
Condensate
Drain Connection
Page 68
Field Provided Vent
Drain Connection
1" Min.
2" Max.
*5' max.
PV C PipeOnly
T o Drai n
FIGURE 44
Evaporator drain
line required
FIGURE 45