Lennox EL297UH045XV36B Unit Information page 76

Condensate Trap With Optional Overflow Switch
From Evaporator Coil
HorizontalFurnace4" Min. to 5" Max.above
condensatedrain connection)
FurnaceCondensate
DrainConnection
Optional
FIGURE 47
Furnace with Evaporator Coil Using a Separate Drain
(Unit shown in horizontal left-hand discharge position)
Field Provided Vent
Evaporator
(4" min. to 5" max. above
Coil
condensate connection)
4"min
5"max
5' max.
PVC Pipe Only
Condensate
Drain Connection
(Trap at coil is optional)
Drain Pan
Piping from furnace and evaporator coil must slope down a minimum 1/4" per ft. toward trap
.
FIGURE 48
Page 76