Page 32
FIGURE 43
Tubin
g
Hose Clamp
Barbed Fitting
Field Provided Drain Components
Elbow
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. Heat cable kit is avail
able from Lennox 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 44
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 of
1/4” per ft. toward trap.
FIGURE 45
95AF2DFV 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 46
95AF2DFV with Evaporator
Coil Using a Common Drain
Field Provided Vent
1” min. 2” max. above
condensate drain.
Evaporator Drain
Line
(vent required)
Condensate
Drain Connec
tion
CAUTION
Do
not use copper tubing or existing copper
condensate lines for drain line.
