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F5M4: Installation Instructions
Assembly
1. Mount the TXV bracket and TXV with the 2 screws removed
during disassembly.
2. Connect Items #1 and #2 (TXV outlet and inlet respectively) and
use an adjustable wrench with a backup wrench to tighten each nut.
Tighten to between 10 and 20 ft-lbs.
3. Connect Item #3 and use an adjustable wrench with a backup
adjustable wrench to tighten the flare nut. Tighten to approximately
12 ft-lbs.
4. Item # 4 - Reconnect the TXV bulb with a clamp and reinstall
insulation around the TXV bulb and vapor tube.
Fig. 15 – Mechanical TXV Removal
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this Caution may result in unit damage.
Failure to place insulation between copper tubes and aluminum parts
will lead to galvanic corrosion, which will result in a refrigerant leak in
the future.
5. Use a wire tie to mount the 1/8" TXV equalizer and bulb tubes to
the vapor header tube. Make sure that there is insulation between
the aluminum vapor tube and copper tube.
6. Leak test the TXV fittings, then evacuate and charge the system to
the required subcooling per the outdoor unit rating plate.
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.
Units are equipped with primary and secondary ¾" FPT drain
connections. For proper condensate line installations see
Fig.
6. 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.
18). Factory-approved condensate traps are available. It is
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: Do not use CPVC in field drain lines due to potential reaction
with POE oil.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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.
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.
A221106
NOTE: If unit is located in or above a living space where damage may
result from condensate overflow, a field-supplied, external condensate
Fig. 2
thru
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
(Fig. 16
and
drained to a noticeable place. As an alternative to using an external
condensate pan, some localities may allow the use of a separate ¾"
(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.
9
CAUTION
!
17).
CAUTION
!
UNIT
2" MIN
(51 mm)
2" MIN
(51 mm)
Fig. 16 – Recommended Condensate Trap
DO NOT USE SHALLOW RUNNING TRAPS!
Fig. 17 – Insufficient Condensate Trap
(Fig.
16). Shallow
A03002
A03013
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