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Do not use copper tubing or existing copper condensate
lines for drain line.
CAUTION
6.
If unit will be started immediately upon completion of
installation, prime trap per procedure outlined in Unit
Start-Up section.
Condensate line must slope downward away from the
trap to drain. If drain level is above condensate trap,
condensate pump must be used. Condensate drain
line should be routed within the conditioned space to
avoid freezing of condensate and blockage of drain
line. If this is not possible, a heat cable kit may be used
on the condensate trap and line.
Figure 40. Unit with Cooling Coil Using Separate
Drain
Drain
Field Provided Vent
1” min. 2” max. above
condensate drain.
Condensate Drain
Connection
Evaporator Drain Line
(vent required)
Figure 41. Evaporator Coil Using a Common Drain
Field Provided Vent
1” min. 2” max. above
condensate drain.
Evaporator Drain Line
(vent required)
Condensate Drain
Connection
Furnace Condensate
Drain Condensate
From Evaporator Coil
Optional
Overflow Switch
Field Provided Vent
1” min. 2” max. above
condensate drain.
Figure 42.
Condensate Trap With Optional Overflow
Switch
