Lennox EL195DF SERIES User Manual page 33

UNCONDITIONED
SPACE
6" (152mm)
Max
*WALL SUPPORT
OUTSIDE WALL
FIELD−PROVIDED
REDUCER MAY BE
REQUIRED TO
ADAPT LARGER
VENT PIPE SIZE TO
TERMINATION
1/2" (13mm) FOAM
INSULATION IN
UNCONDITIONED
SPACE
*Use wall support every 24" (610). Use
two supports if extension is greater
than 24" but less than 48".
NON−DIRECT VENT FIELD SUPPLIED WALL TERMINATION EX-
TENDED OR (15F74) WALL TERMINATION VENT PIPE EXTENDED
FIGURE 40
EL195DF NON−DIRECT VENT APPLICATION
USING EXISTING CHIMNEY
SIZE TERMINATION
PIPE PER TABLE 11.
3" − 8"
(76mm−
203mm)
Minimum 12" (305MM)
above chimney top
plate or average snow
accumulation
SHEET
METAL TOP
PLATE
INSULATE
TO FORM
SEAL
NOTE − Do not discharge exhaust gases directly into any chimney or vent stack. If ver-
tical discharge through an existing unused chimney or stack is required, insert piping
inside chimney until the pipe open end is above top of chimney and terminate as illus-
trated. In any exterior portion of chimney, the exhaust vent must be insulated.
FIGURE 41
Condensate Piping
This unit is designed for either right- or left-side exit of con-
densate piping. Refer to figures 42 and 43 for condensate
trap locations.
NOTE − If necessary the condensate trap may be installed
up to 5´ away from the furnace. Use PVC pipe to connect
trap to furnace condensate outlet. Piping from furnace
must slope down a minimum of 1/4" per ft. toward trap.
12" (305mm) MAX. for 2" (51mm)
20" (508mm) MAX. for 3" (76mm)
SIZE TER-
MINATION
PIPE PER
TABLE 11.
12" (305mm)
ABOVE GRADE OR
AVERAGE SNOW
ACCUMULATION
1/2" (13mm) FOAM
INSULATION
STRAIGHT−CUT OR
ANGLE−CUT IN DIRECTION
OF ROOF SLOPE
EXHAUST VENT
1/2" (13mm)
WEATHERPROOF
INSULATION
SHOULDER OF FITTINGS
PROVIDE SUPPORT
OF PIPE ON TOP PLATE
3" − 8"
(76mm−
203mm)
EXTERIOR
PORTION OF
CHIMNEY
Page 33
CONDENSATE TRAP AND PLUG LOCATIONS
Trap
(same on
right side)
1−1/2 in.
FIGURE 42
1 − Determine which side condensate piping will exit the
unit, location of trap, field−provided fittings and length of
PVC pipe required to reach available drain.
2 − Use a 3/8 allen wrench and remove plug (figure 42)
from the cold end header box at the appropriate loca-
tion on the side of the unit. Install field−provided 1/2"
NPT male fitting into cold end header box. Use teflon
tape or appropriate pipe dope.
3 − Install the cap over the clean out opening at the base of
the trap. Secure with clamp. See figure 47.
4 − Install drain trap using appropriate PVC fittings, glue
all joints. Glue the provided drain trap as shown in fig-
ure 47. Route the condensate line to an open drain.
5 − Figure 44 shows the furnace and evaporator coil using
a separate drain. If necessary, the condensate line
from the furnace and evaporator coil can drain togeth-
er. See figures 45 and 46. The field provided vent must
be a minimum 1" to a maximum 2" length above the
condensate drain outlet connection.
NOTE − If necessary the condensate trap may be installed
up to 5 feet away from the furnace. Piping from furnace
must slope down a minimum of 1/4" per ft. toward trap.
NOTE − Vinyl tubing may be used for condensate drain.
Tubing must be 1−1/4" OD X 1" ID and should be
attached to the drain on the trap using a hose clamp.
Plug
(same on left
side)