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UNIT
Fig. 13—Recommended Condensate Trap
Units have sweat suction and liquid tube connections. Make suction tube connection first.
1. Cut tubing to correct length.
2. Insert tube into sweat connection on unit until it bottoms.
3. Solder with low-temperature 430°F silver alloy solder.
CAUTION: Wrap a wet cloth around rear of fitting to prevent damage to factory-made joints.
4. Evacuate coil and tubing system if connections are not made within 60 sec or tubing package is not used.
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PROCEDURE 7—CONDENSATE DRAIN
Units are equipped with primary and secondary 3/4-in. FPT drain connections. For proper condensate line installation see Fig. 4, 6, 7, and 8. To
prevent property damage and achieve optimum drainage performance, BOTH primary and secondary drain lines should be installed and include
properly sized condensate traps. (See Fig. 13 and 15.) (Units starting with serial number 1398 are shipped with PVC primary condensate trap.
Check loose parts bag.) Be sure to install plastic push-in plugs in unused condensate drain fittings. It is recommended that PVC fittings be used
on the plastic condensate pan. Do not over-tighten. Finger-tighten plus 1-1/2 turns. Use pipe dope.
CAUTION: Shallow running taps are inadequate and DO NOT allow proper condensate drainage. (See Fig. 14.)
NOTE: When connecting condensate drain lines, avoid blocking filter access panel. Prime both primary and secondary condensate traps after
connecting to drain pan.
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. condensate line (with appropriate trap) to a place where the condensate will be noticeable.
The owner of the structure must be informed that when condensate flows from the secondary drain or external condensate pane, the unit requires
servicing, or water damage will occur.
Install traps in the condensate lines as close to the coil as possible. (See Fig. 15.) Make sure that the outlet of each trap is below its connection
to the condensate pan to prevent condensate from overflowing the drain pan. Prime all traps, test for leaks, and insulate traps if located above a
living are.
Condensate drain lines should be pitched downward at a minimum of 1 in. for every 10 ft. of length. Consult local codes for additional restrictions
or precautions.
CAUTION: Never operate unit without a filter or with filter access door removed. Damage to blower motor or coil can
result.
IMPORTANT: Factory authorized filters must be used when locating the filter inside the unit. (See Table 2.) For those applications where access
to an internal filter is impractical, a field-supplied filter must be installed in the return duct system.
FILTER KIT
(12 PACK)
"
1
2
⁄
4
"
1
2
⁄
4
A95321
Fig. 14—Insufficient Condensate Trap
Table 2—Filter Kits
PART NUMBER
KFAFK0212MED
KFAFK0312LRG
KFAFK0412XXL
—11—
DO NOT USE SHALLOW RUNNING TRAPS!
SIZE USED WITH
001, 002,
003, 005
006
A95320
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