508151-01
Issue 2104
Page 46 of 72
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. Heating cable kit is
available in various lengths; 6 ft. (1.8m) - kit no. 26K68;
24 ft. (7.3m) - kit no. 26K69; and 50 ft. (15.2m) - kit no.
26K70.
Figure 42. Evaporator Coil Using a Separate Drain
Figure 43. Evaporator Coil Using a Common Drain
Furnace Condensate
Drain Condensate
From Evaporator Coil
Optional
Overflow Switch
Field Provided Vent
1” min. 2” max. above
condensate drain.
Figure 44.
Condensate Trap With Optional Overflow
Switch