Lennox ELITE EL195UHE Installation Instructions Manual page 34

(Trap at coil is optional)
Drain Pan
Piping from furnace and evaporator coil must slope down a minimum 1/4" per ft. toward trap
EL195UHE with Evaporator
Coil Using a Common Drain
(Trap at coil is optional)
(1" min. to 2" Max.above
condensate drain connection)
Condensate
Drain Connection
FIGURE 50
(Trap at coil is optional)
Drain Pan
EL195UHE with Evaporatoir Coil Using a Separate Drain
(Unit shown in horizontal left-hand discharge position)
Evaporator
Coil
Condensate
Drain Connection
Evaporator drain
line required
EL195UHE with Evaporator Coil Using a Common Drain
(Unit shown in horizontal left-hand discharge position)
Evaporator
Coil
Piping from furnace and evaporator coil must
slope down a minimum 1/4" per ft. toward trap
4"min
5"max
5' max.
PVC Pipe Only
FIGURE 49
When combining the furnace and evaporator
coil drains together, the A/C condensate drain
outlet must be vented to relieve pressure in or­
der for the furnace pressure switch to operate
properly.
4"min
5"max
5' max.
PVC Pipe Only
FIGURE 51
Page 34
Field Provided Vent
(4" min. to 5" max. above
condensate connection)
.
IMPORTANT
(4" min. to 5" Max.above
condensate drain connection)