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FIGURE 42
CONDENSATE TRAP LOCATION
(shown with right side exit of condensation)
5’ max.
to drain
1” min.
2” max.
Trap can be installed a maxi
mum of 5ft. from furnace (*PVC
only)
Field Provided Vent
1” min. 2” max. above
condensate drain.
*Piping from furnace must slope down a
minimum 1/4” per ft. toward trap
FIGURE 43
FurnaceCondensate
Drain Connection
From Evaporator Coil
Optional
Condensate Trap With Optional Overflow Switch
Field Provided Vent
1” min. 2” max. above
condensate drain.
FIGURE 44
ML193DF 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 45
ML193DF 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
