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(Trap at coil is optional)
Drain Pan
(Trap at coil is optional)
Field Provided Vent
(1" min. 2" max. above
condensate connection)
Condensate
Drain Connection
Figure 55. Furnace with Evaporator Coil Using a
Separate Drain
Drain Pan
(Trap at coil is optional)
Piping from furnace and evaporator coil must slope down a minimum 1/4" per ft. toward trap
508404-01
(Unit shown in horizontal left-hand discharge position)
Evaporator
Coil
Condensate
Drain Connection
Piping from furnace and evaporator coil must slope down a minimum 1/4" per ft. toward trap
Figure 54. Furnace with Evaporator Coil Using a Separate Drain
Evaporator drain
line required
(Unit shown in horizontal left−hand discharge position)
Evaporator
Coil
Condensate Drain
Connection
Figure 57. Furnace with Evaporator Coil Using a Common Drain
4"min
5"max
5' max.
PVC Pipe Only
(Trap at coil is optional)
Field-Provided Vent
(1" min. to 2" Max.above
condensate drain connection)
Condensate
Drain Connection
Figure 56. Furnace with Evaporator Coil Using a
4"min
5"max
5' max.
PVC Pipe Only
Issue 2332
Field Provided Vent
(4" min. to 5" max. above
condensate drain connection)
Evaporator drain
line required
Common Drain
Field-Provided Vent
(4" min. to 5" Max. above
condensate drain connection)
Page 35 of 60
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