Condensate Assembly - Lennox G71MPP-36B-070 Installation Instructions Manual

1 - Determine w hich sidecondensate pipingwillexitthe
unit,Remove p lugs fromthecondensate collar atthe
appropriate l ocation onthesideof theunit.
NOTE - The condensate trap is factory-shipped with
two rubber Q-rings and two rubber clean-out caps
installed. Check to make sure that these items are in
place before installing the trap assembly.
2- Install condensate trap onto the condensate collar.
Use provided HI/LO screws to secure two upper
flanges of the trap to the collar, Use provided sheet
metal screw to secure bottom trap flange to side of
unit, See figure 34,
NOTE - In upflow and downflow applications, con-
densate trap must be installed on the same side as
exhaust piping.
CAUTION
Condensate line must be sloped downward away from
condensate trap to drain, If drain level is above con-
densate trap, condensate pump must be used, Con-
densate drain line should be routed within the condi-
tioned 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 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,
A CAUTION
5 - If unit will be started immediately upon completion of
installation, prime trap per procedure outlined in Unit
Start-Up section.
6- Glue the provided cap onto the unused condensate
drain line stub.
3- The grey-colored condensate trap (101661-01) pro-
vided with the unit is manufactured using ABS materi-
al. This is the only trap that is to be used with this unit,
Use ABS to PVC transition solvent cement to glue a
field-provided PVC coupling or PVC pipe to the trap.
Install a tee and vent pipe near the trap,
NOTE- The condensate trap drain stubs (both sides)
have an outer diameter which will accept a standard
3/4" PVC coupling. The inner diameter of each stub
will accept standard 1/2" diameter PVC pipe.
NOTE - Vinyl tubing may be used for condensate
drain. Tubing must be 1-1/4" QD X 1" ID and should be
attached to the drain stubs on the trap using a hose
clamp.
4 - Glue the field-provided drain line to the tee, Route the
drain line to an open drain. As an alternate, clear vinyl
tubing may be used to drain condensate away from
the trap. Secure the vinyl tubing to the drain stubs on
the trap using a hose clamp. Do not overtighten the
hose clamp.
O-RINGS
CONDENSATE ASSEMBLY
HI/LO SCREWS
(DO NOT use power
driver. Hand4ighten
using screw driver.)
/VENT
NIPPLE
CAP
\
SCREW
TEE
NIPPLE
COUPLING
_ CLEAN-OUT ACCESS
(both sides)
"_NDENSATE TRAP
(grey)
FIGURE 34
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