Haier GE APPLIANCES NF96US Service Manual page 43

From evaporator coil
Optional
overflow switch
Figure 50. Condensate Trap with Optional Overflow
IMPORTANT
When combining the furnace and evaporator coil
drains together, the A/C condensate drain outlet must
be vented to relieve pressure in order for the furnace
pressure switch to operate properly.
(Trap at coil is optional)
Drain pan
31-5000728 Rev. 0
Field provided vent
(1" min. 2" max. above
condensate drain)
Furnace condensate
drain connection
Switch
(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
Figure 52. Evaporator Coil Using a Common Drain
(Trap at coil is optional)
Field provided vent
(1" min. 2" max. above
condensate drain connection)
Condensate
drain connection
Figure 51. Evaporator Coil Using a Common Drain
4"min
5"max
5' max.
PVC pipe only
Page 43
Evaporator drain
line required
Field provided vent
(4" min. 5" max. above
condensate drain
connection)