Installation Manual

6 484 01 3701 05

Specifications subject to change without notice.

an open drain or sump. Make sure that the outlet of each trap is

below its connection to condensate pan to prevent condensate from

overflowing the drain pan. Prime all traps, test for leaks, and

insulate traps and lines if located above a living area.

3” / 76mm

A08067

Fig. 8 − Condensate Trap

NOTE: If unit is located in or above a living space, where damage

may result from condensate overflow, a field−supplied, external

condensate pan should be installed underneath the entire unit, and a

secondary condensate line (with appropriate trap) should be run

from the unit into the pan. Any condensate in this external

condensate pan should be drained to a noticeable place. As an

alternative to using an external condensate pan, some localities

may allow the running of a separate 3/4−in. (19 mm) condensate

line (with appropriate trap) per local code to a place where the

condensate will be noticeable. The owner of the structure must be

informed that when condensate flows from secondary drain or

external condensate pan, the unit requires servicing or water

damage will occur. To further protect against water damage, install

a float switch to shut the unit off if the water in the secondary pan

gets too high.

NOTE: To avoid drainage problems, test the primary drain line by

slowly pouring water into the pan. Check piping for leaks and

proper condensate drainage. Using the secondary drain as

explained in the previous note provides further protection against

overflow due to a clogged primary drain.

NOTE: In applications where return air humidity levels stay at

70% or above for a prolonged period of time, condensation can

form on the bottom of pan and drip.

WASTE LINE CONNECTION

If the condensate line is to be connected to a waste (sewer) line, an

open trap must be installed ahead of the waste line to prevent

escape of sewer gases (See Fig. 9 ).

A10216

Fig. 9 − Condensate Drain to Waste Line

EXPLOSION HAZARD

Failure to follow this warning could result in personal injury

or death.

Provide trap with air gap in drain line when connecting to

waste (sewer) line.

WARNING

Lewisburg, Tennessee 37091 USA