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PF4MNA: Installation Instructions
REFRIGERANT FLOW-CONTROL DEVICE
CAUTION
!
PRODUCT OPERATION HAZARD
Failure to follow this caution may result in improper product operation.
If using a TXV in conjunction with a single-phase reciprocating
compressor, a compressor start capacitor and relay are required.
Consult outdoor unit pre-sale literature for start assist kit part number.
CONDENSATE DRAINS
To connect drains, the cap openings must be removed. Use a knife to
start the opening near the tab and using pliers, pull the tab to remove the
disk. Clean the edge of the opening if necessary and install the
condensate line. Finally caulk around the lines where they exit the fitting
to retain the low leak rating of the unit.
WARNING
!
UNIT OR PROPERTY DAMAGE HAZARD
Failure to follow this warning caution may result in product or property
damage.
The conversion of the fan coil to downflow requires special procedures
for the condensate drains on both A-coil and Slope-coil units. The
vertical drains have an overflow hole between the primary and
secondary drain holes. This hole is plugged for all applications except
downflow, and must be used for downflow. During conversion process,
remove plastic cap covering vertical drains only and discard. Remove
plug from overflow hole and discard. At completion of downflow
installation, caulk around vertical pan fitting to door joint to retain low
air leak performance of the unit.
UNIT
Fig. 19 – Recommended Condensate Trap
DO NOT USE SHALLOW RUNNING TRAPS!
Fig. 20 – Insufficient Condensate Trap
Units are equipped with primary and secondary 3/4-in. FPT drain
connections. For proper condensate line installations see Fig. 1, 2, 3, 4
and 5. To prevent property damage and achieve optimum drainage
performance, BOTH primary and secondary drain lines should be
installed and include properly-sized condensate traps.
Fig.
21) Factory-approved condensate traps are available. It is
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
2" MIN
(51 mm)
2" MIN
(51 mm)
(Fig. 19
recommended that PVC fittings be used on the plastic condensate pan.
Finger-tighten plus 1-1/2 turns. Do not over-tighten. Use pipe dope.
NOTE: When connecting condensate drain lines, avoid blocking filter
access panel, thus preventing filter removal. After connection, prime
both primary and secondary condensate traps.
PRODUCT DAMAGE HAZARD
Failure to follow this caution may result in product or property damage.
Use only full size P-traps in the condensate line
running traps are inadequate and DO NOT allow proper condensate
drainage
(Fig.
20).
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
(19 mm) 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.
(Fig.
21) 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 slope of 1-in (25 mm) for every 10-ft (3 m) of length. Consult
local codes for additional restrictions or precautions.
A03002
PRIMARY TRAP REQUIRED
(USE FACTORY KIT OR
FIELD-SUPPLIED TRAP OF
SUFFICIENT DEPTH.
STANDARD P-TRAPS ARE
NOT SUFFICIENT. SEE
FIGURE OF RECOMMENDED
CONDENSATE TRAP)
ELECTRIC HEATERS
See unit rating plate for factory-approved electric heater kits. Follow
installation instructions provided with kit.
A03013
ELECTRONIC AIR CLEANER
The Electronic Air Cleaner may be connected to fan coil as shown in
Fig. 22. This method requires a field-supplied transformer. See
Electronic Air Cleaner literature for kit requirements.
HUMIDIFIER
and
Connect humidifier and humidistat to fan coil unit as shown in
and
Fig.
24. The cooling lockout relay is optional.
8
CAUTION
!
FILTER
ACCESS
PANEL
SECONDARY DRAIN WITH
APPROPRIATE TRAP REQUIRED
(USE FACTORY KIT OR
FIELD-SUPPLIED TRAP)
Fig. 21 – Condensate Drain
ACCESSORIES
(Fig.
19). Shallow
A03003
Fig. 23
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