Lennox G32V Series Service Literature page 44

Condensate Piping
This unit is designed for either right- or left-side exit of con-
densate piping. Condensate drain line should be routed
only within the conditioned space to avoid freezing of con-
densate and blockage of drain line. An electric heat cable
should be used where condensate drain is exposed to un-
conditioned areas. The following procedure is for all G32V
units.
1 − Determine which side condensate will exit the unit.
2 − Connect 1/2" (13mm) plastic pipe plug (provided) in
the unused end of the condensate trap. Install plug so
that it is sealed water tight yet able to be removed. Do
not permanently seal the connection. Teflon tape is
recommended to seal joint. See figure 47.
CONDENSATE ASSEMBLY
(For left or right installation)
COMBUSTION AIR
BLOWER BRACK-
ET
NIPPLE PLUG
ADAPTER
FIGURE 47
3 − Use the provided adapter (1/2" PVC x 1/2" MPT) and
the nipple (1/2" PVC) to carry drainage outside the
cabinet. If a field substitute is needed, 1/2" CPVC x 1/2"
MPT adapter and 1/2" CPVC is acceptable for use.
4 − Glue nipple to the adapter using the procedures out-
lined in the Joint Cementing Procedures" section.
The nipple/adapter assembly should be connected in
a non-permanent manner and must be water tight.
Teflon tape is recommended to seal the joint.
For Right-Hand Side Condensate Exit:
Install the nipple/adapter assembly from the outside
of the cabinet and insert the adapter into the threaded
opening in the condensate trap.
COLD HEAD-
ER
BOX
NIPPLE
ADAPTER
CONDENSATE TRAP
BOOT OR CAP
For Left-Hand Side Condensate Exit:
Insert nipple/adapter assembly from the left hand
side of the cabinet and through the combustion air
blower mounting structure into the threaded opening
in the condensate trap.
5 − Connect field supplied plumbing to nipple and route to
open drain. Plumbing should be vented to a point higher
than the condensing coil. See figure 48.
Do not use copper tubing or existing copper con-
densate lines for drain line.
CONDENSATE PLUMBING
(Plumbing must be vented higher than coil.)
6 − Connect condensate drain line (1/2" [13mm] SDR 11
plastic pipe or tubing) to condensate connection on
condensate trap assembly and route to open drain.
Condensate line must be sloped downward away from
condensate trap to thedrain. If drain level is above con-
densate outlet, use a condensate pump to pump con-
densate to the higher level. 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 condensate line. Heating cable
kit is available from Lennox in various lengths; 6ft.
(1.8m) − kit no. 18K48; 24ft. (7.3m) − kit no. 18K49; and
50ft. (15.2m) − kit no. 18K50.
Page 44
CAUTION
FIGURE 48