Lennox DAVE SIGNATURE SL297UHNV Installation Instructions Manual page 25

CONDENSATE TRAP LOCATIONS
(Unit shown in upflow position with remote trap)
Field ProvidedVent
Min. 1" Above Condensate
Drain Connection
1" Min.
2" Max.
*5' max.
PV C PipeOnly
Trap Can Be Installed a
Maximum 5' From Furnace
*Piping from furnace must slope down a
minimum 1/4" per ft. toward trap
FIGURE 35
(Trap at coil is optional)
Drain Pan
Piping from furnace and evaporator coil must slope down a minimum 1/4" per ft. toward trap
T o Drai n
Furnace with Evaporator Coil Using a Separate Drain
(Unit shown in horizontal left-hand discharge position)
Evaporator
Coil
Condensate
Drain Connection
Condensate line must slope downward away from the trap
to drain. If drain level is above condensate trap, conden-
sate 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 possi-
ble, a heat cable kit may be used on the condensate trap
and line. Heating cable kit is available from Lennox in var-
ious lengths; 6 ft. (1.8m) - kit no. 26K68; 24 ft. (7.3m) - kit
no. 26K69; and 50 ft. (15.2m) - kit no. 26K70.
(Trap at coil is optional)
Field Provided Vent
(1" min. 2" max. above
condensate connection)
Condensate
Drain Connection
4"min
5"max
5' max.
PVC Pipe Only
Figure 37
Page 25
Furnace With Evaporator
Coil Using A Separate Drain
FIGURE 36
Field Provided Vent
(4" min. to 5" max. above
condensate connection)
.
Evaporator drain
line required