Lennox ML193UH Installation Instructions Manual page 30

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 46
Furnace With Evaporator
Coil Using A Separate Drain
(Trap at coil is optional)
Field Provided Vent
(1" min. 2" max. above
condensate connection)
Condensate
Drain Connection
FIGURE 47
T o Drai n
Evaporator drain
line required
Page 30
Condensate Trap With Optional Overflow Switch
From Evaporator Coil
HorizontalFurnace4" Min. to 5" Max.above
Optional
FIGURE 48
condensatedrain connection)
FurnaceCondensate
DrainConnection