3
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.
UNIT OR PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
Take precautions to ensure aluminum tubes do not come in
direct contact or allow for condensate run
−
off with a dissimilar
metal. Dissimilar metals can cause galvanic corrosion and
possible premature failure.
CAUTION
!
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.
See Table 1 for coil connection tube size.
1. Remove cabinet access door.
2. Remove rubber plugs, suction plug then liquid plug, from
coil stubs using a pulling and twisting motion. Hold coil
stubs steady to avoid bending or distorting.
3. Remove tubing plate with rubber grommets and slide plate
with grommets onto the refrigerant lines (field line
−
set),
away from braze joints.
4. Fit refrigerant lines into coil stubs. Wrap a heat sinking
material such as a wet cloth behind braze joints.
5. Wrap TXV and nearby tubing with a heat
−
sinking material
such as a wet cloth.
6. Use 1/2 psig Nitrogen purge in the suction and out the
liquid line.
7. Braze using a Sil
−
Fos or Phos
−
copper alloy. Do not use soft
solder.
8. After brazing, allow joints to cool. Carefully remove TXV
bulb insulation and verify that the TXV bulb is securely
fastened with hose clamp. Tighten screw a half
−
turn past
hand tight with TXV bulb placed in the indentation with
full contact with the vapor line tube. Re
−
wrap TXV bulb
with insulation.
9. Leak check connections before insulating entire suction
line.
10. Slide tubing plate with rubber grommets over joints.
Position tubing at center of each grommet to ensure an air
seal around the tube. Reinstall cabinet door.
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
!
PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal injury.
Wear eye protection.
Coil is factory charged with 15 psi nitrogen. The coil is under
pressure and TXV screen is in place behind liquid line plug.
DO NOT removed liquid line plug first; always remove the
suction line plug first to depressurize the coil.
!
WARNING
REFRIGERANT METERING DEVICE
The CAPVP coil has 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
field
non
−
adjustable.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in product damage.
DO NOT BURY MORE THAN 36” (914 mm) OF
REFRIGERANT TUBING IN GROUND. If any section of
tubing is buried, there must be a 6” (152 mm) vertical rise to the
valve connections on the outdoor unit. If more than the
recommended length is buried, refrigerant may migrate to cooler
buried section during extended periods of unit shutdown,
causing refrigerant slugging and possible compressor damage at
start
−
up.
CAUTION
!
CONDENSATE 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”. 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“ (76 mm) deep and no higher than
the bottom of unit condensate drain opening (See Fig. 4). Pitch
condensate line 1” (25.4 mm) for every 10 ft. of length to an open
drain or sump. Make sure that the outlet of each trap is below its
connection to condensate pan to prevent condensate from
overflowing the drain pan. Prime all traps, test for leaks, and
insulate traps and lines if located above a living area.
CAPVP
