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" OD X 1" ID and should be attached to the drain stubs on the trap using a hose clamp.
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.
CONDENSATE ASSEMBLY
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.
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-
O−RINGS
CAP
HI/LO SCREWS
(DO NOT use power driver. Hand−tighten using screw driver.)
VENT
NIPPLE
TEE
NIPPLE
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.
SCREW
COUPLING
CLEAN−OUT ACCESS
(both sides)
CONDENSATE TRAP
CAUTION
Do not use copper tubing or existing copper condensate lines for drain line.
NOTE − Use screws to secure condensate trap to cabinet. DO NOT apply glue to this joint. All other joints must be glued.
FIGURE 45
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