INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X
496 01 5503 00 11
Specifications are subject to change without notice.
and must be installed properly to ensure proper seating in
the direction for cooling operation.
Always use outdoor units designed to match indoor fan coil
applications.
REFRIGERANT METERING DEVICE
FEM4X, REM4X Models:
These Fan Coils have a factory installed hard shut−off TXV
designed only for use with R−410A refrigerant. Use only with
outdoor units designed for R−410A.
TXV is factory set and not field adjustable.
!
CAUTION
PRODUCT DAMAGE HAZARD
Failure to follow this caution may result in product
damage.
This Fan Coil has a hard shut−off TXV metering device.
A compressor Hard Start Kit is REQUIRED in all
applications where the matching outdoor unit has a
single−phase reciprocating compressor.
!
CAUTION
PRODUCT OPERATION HAZARD
Failure to follow this caution may result in improper prod-
uct operation.
If using a TXV in conjunction with a single−phase recipro-
cating compressor, a compressor start capacitor and
relay are required. Consult outdoor unit pre−sale litera-
ture for start assist kit part number.
Figure 16 Refrigerant Flow−Control Device
TEFLON SEAL
BRASS
HEX NUT
STRAINER
PISTON
RETAINER
BRASS
HEX BODY
DISTRIBUTOR
PISTON
FLOW IN
COOLING
TEFLON RING
CONDENSATE DRAINS
Unit is provided with primary and secondary 3/4” (19mm)
NPT drain connections. Refer to Figure 2, Figure 3,
Figure 4, Figure 5, and Figure 6 to identify the primary and
secondary locations. To prevent property damage and
achieve optimum drainage performance, BOTH primary
and secondary drain lines should be installed and include
properly sized condensate traps (refer to Figure 17).
Factory approved condensate traps are available
(accessory part number EBAC01CTK).
To connect drainlines, the drain connection knock−outs
must be removed. Use a knife to start the opening near the
tab and using pliers, pull the tab to remove the knock−out.
Clean the edge of the opening if necessary. After drain
fittings are installed, caulk the seam between the fitting and
the cover to retain the low leak rating of the unit.
It is recommended the PVC fittings be used on the plastic
condensate pan. Do not over−tighten. Finger−tighten plus
1−1/2 turns. Use pipe dope to ensure proper seal.
Install traps in the condensate lines as close to the coil as
possible (refer to Figure 19), but avoid blocking filter access
panel.
Install drain lines below the bottom of the drain pan and pitch
the drain lines down from the coil at least 1/4 inch per foot of
run (6mm per 0.3m). Horizontal runs over 15 feet (5m) long
must also have an anti−siphon air vents (stand pipes),
installed ahead of the horizontal runs. Extremely long
horizontal runs may require oversized drain lines to
eliminate air trapping.
Route primary drain line to the outside or to a floor drain.
Check local codes before connecting to a waste (sewer)
line.
Route the secondary drain line to a place in compliance with
local installation codes where it will be noticed when unit is
operational. Condensate flowing from secondary (overflow)
drain indicates a plugged primary drain − unit requires
service or water damage will occur.
Prime all traps, test for leaks, and insulate in areas where
sweating of the traps and drain lines could potentially cause
water damage. Consult local codes for additional
requirements or precautions.
If a gravity drain cannot be used, install a condensate pump.
Install the pump as close to the indoor section as possible.
!
CAUTION
PRODUCT or PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in product or
property damage.
Use only full size P−traps in the condensate line (refer to
Figure 17). Shallow, running traps are inadequate and
DO NOT allow proper condensate drainage (refer to
Figure 18).
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