Accessories; Recommended Condensate Trap; Electronic Air Cleaner - Carrier FB4B Instruction Manual

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 use 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 pan, the unit requires
servicing or water damage will occur.
Install traps in the condensate lines as close to the coil as possible. (See Fig. 20.) 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 area.
Condensate drain lines should be pitched downward at a minimum slop of 1 in. for every 10 ft of length.
Consult local codes for additional restrictions or precautions.
PROCEDURE 8—ACCESSORIES
A. Electronic Air Cleaner
The Electronic Air Cleaner may be connected to fan coil as shown in Fig. 21. This method requires a field supplied transformer. See Electronic
Air Cleaner literature for kit requirements.
B. Humidifier
Connect humidifier and humidistat to fan coil unit as shown in Fig. 22 and Fig. 23. The cooling lockout relay is optional (See Fig. 22.)
BRASS
HEX NUT
STRAINER
Fig. 17—Refrigerant Flow-Control Device (FC4C has TXV and Strainer)
UNIT
Fig. 18—Recommended Condensate Trap
TEFLON SEAL
PISTON DISTRIBUTOR
PISTON BRASS
RETAINER HEX BODY
2" MIN
2" MIN
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A94415
A03002