507961-01G / 31-5000653
Page 34 of 57
Issue 2128
(Unit shown in horizontal left-hand discharge position)
Piping from furnace and evaporator coil must slope down a minimum 1/4” per ft. toward trap
5’ max.
PVC Pipe Only
Evaporator
Coil
Drain Pan
Condensate
DrainConnection
Field Provided Vent
(4” min. to 5” max. above
condensate drain connection)
(Trap at coil is optional)
4”min
5”max
Figure 51. Furnace with Evaporator Coil Using a Separate Drain
Condensate
DrainConnection
Field Provided Vent
(1” min. 2” max. above
condensate connection)
Evaporator drain
line required
(Trap at coil is optional)
Figure 52. Furnace with Evaporator Coil Using a
Separate Drain
(1” min. to 2” Max.above
condensate drain connection)
Condensate
Drain Connection
Evaporator drain
line required
(Trap at coil is optional)
Field-Provided Vent
Figure 53. Furnace with Evaporator Coil Using a
Common Drain
(Unit shown in horizontal left−hand discharge position)
Condensate Drain
Connection
(4” min. to 5” Max. above
condensate drain connection)
5’ max.
PVC Pipe Only
Evaporator
Coil
Drain Pan
Piping from furnace and evaporator coil must slope down a minimum 1/4” per ft. toward trap
(Trap at coil is optional)
4”min
5”max
Field-Provided Vent
Figure 54. Furnace with Evaporator Coil Using a Common Drain