484 01 3600 00
5
A
(Inside Opening)
Furnace Outlet
Front Bracket
Rear Bracket
Coil Casing Width
Side Bracket
Side Bracket
NOTE:
Weld 3 places
in 4 corners
19 1/2” (495)
(Outside)
3/4” (19)
Flanges
(Where Shown)
B
c
A
B
C
12-3/4 (324)
17-1/2 (445)
2-1/4 (57)
16-1/16 (408)
21 (533)
2-1/4 (57)
19-9/16 (497)
24-1/2 (622)
2-1/4 (57)
17-5/8 (448)
19-3/8 (492)
4 (102)
21-1/4 (540)
23 (584)
4 (102)
23 (584)
24-1/2 (622)
4 (102)
DIMENSIONS Inches (mm)
A09395
Figure 5
−
Recommended Transition
Connect Refrigerant Piping
Use accessory tubing package or field
−
supplied tubing of
refrigerant grade. Suction tube must be insulated. Do not
use damaged, dirty, or contaminated tubing because it may
plug refrigerant flow
−
control device. ALWAYS evacuate the
coil and field
−
supplied tubing before opening outdoor unit
service valves.
Connect Refrigerant Liquid and Suction
Lines
For matched and mismatched systems, use line sizes
recommended in outdoor unit Installation Instructions.
The coil can be connected to outdoor units using accessory
tubing packages or field
−
supplied tubing of refrigerant
grade. Always evacuate tubing and reclaim refrigerant when
making connections or flaring tubing. Leak check
connections before insulating entire suction line.
Suction Line
Suction line is designed for field sweat connection. Line is
plugged to keep out moisture and dirt. Remove these plugs
only when ready to make connection.
See Table 1 for coil connection tube size.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in product
damage.
To avoid valve damage to the refrigerant control device
while brazing, valves must be wrapped with a
heat
−
sinking material such as a wet cloth.
CAUTION
!
1. Remove cabinet access door.
2. Remove rubber plugs from coil stubs using a pulling
and twisting motion. Hold coil stubs steady to avoid
bending or distorting.
3. Wrap TXV and nearby tubing with a heat sinking
material such as a wet cloth.
4. Use 1/2 psig Nitrogen purge in the suction and out the
liquid line.
5. Braze using a Sil
−
Fos or Phos
−
copper alloy. Do not
use soft solder.
6. After brazing, allow joints to cool. Slide rubber
grommets over joints. Position tubing at center of
each grommet to ensure an air seal around the tube.
7. Always evacuate lines and reclaim refrigerant when
making connections or flaring refrigerant lines. Leak
check connections before insulating entire suction line.
8. If outdoor equipment will not be installed until a later
date, braze liquid and suction lines closed outside. Add
a Schraeder port test fitting to the suction line outside.
Refrigerant Metering Device
END4X, ENW4X 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.
NOTE
: ALL TXV’S HAVE PRESET SUPERHEAT
SETTINGS AND ARE
NOT
FIELD
−
ADJUSTABLE.
Condensate Drain Line Connection
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property
damage.
When installing over a finished ceiling and/or living area,
install a field
−
fabricated secondary condensate pan
under the entire unit.
CAUTION
!
The coil is designed to dispose of accumulated water
through built
−
in condensate drain fittings. It is recommended
that PVC fittings be used on the condensate pan. Do not
over
−
tighten. Finger tighten plus 1
−
1/2 turns. Be sure to
install plastic plug in unused condensate drain fitting. Two
3/4 inch female threaded pipe connections are provided in
each coil condensate pan.
A trap is not necessary on the condensate line. Consult
local codes for additional restrictions or precautions. If local
codes require a trap then the following guidelines are
suggested to assure proper drainage. Install a trap in
condensate line of coil as close to the coil as possible. Make
trap at least 3 inches (76 mm) deep and no higher than the
