Page 37
FIGURE 46
FurnaceCondensate
DrainConnection
From Evaporator Coil
Optional
Condensate Trap With Optional Overflow Switch
Field Provided Vent
1” min. 2” max. above
condensate drain.
FIGURE 47
ML196DFE with Evaporator Coil
Using a Separate Drain
Drain
Field Provided Vent
1” min. 2” max. above
condensate drain.
Condensate Drain
Connection
Evaporator Drain Line
(vent required)
IMPORTANT
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.
FIGURE 48
ML196DFE with Evaporator
Coil Using a Common Drain
Field Provided Vent
1” min. 2” max. above
condensate drain.
Evaporator Drain Line
(vent required)
Condensate Drain
Connection
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