Advertisement
CAUTION
!
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.
The coil can be connected to outdoor units using 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.
a. Remove cabinet access door.
b. 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.
c. Remove tubing plate with rubber grommets and slide plate
with grommets onto the refrigerant lines (field line- -set),
away from braze joints.
d. Fit refrigerant lines into coil stubs. Wrap a heat sinking ma-
terial such as a wet cloth behind braze joints.
e. Wrap TXV and nearby tubing with a heat- -sinking material
such as a wet cloth.
f. Use 1/2 psig Nitrogen purge in the suction and out the liq-
uid line.
g. Braze using a Sil- -Fos or Phos- -copper alloy. Do not use soft
solder.
h. After brazing, allow joints to cool. Carefully remove TXV
bulb insulation and verify that the TXV bulb is securely fas-
tened with hose clamp. Tighten screw a half- -turn past hand
tight with TXV bulb placed in the indentation with full con-
tact with the vapor line tube. Re- -wrap TXV bulb with insu-
lation.
i. Leak check connections before insulating entire suction
line.
j. Slide tubing plate with rubber grommets over joints. Posi-
tion tubing at center of each grommet to ensure an air seal
around the tube. Reinstall cabinet door.
Table 1 – Coil Connection Sizes
MODEL NUMBER
TONNAGE
CSPHP2412A(T,L)A
CSPHP3012A(T,L)A
CSPHP3612A(T,L)A
CSPHP4212A(T,L)A
CSPHP4812A(T,L)A
CSPHP6012A(T,L)A
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in product damage.
To avoid damage while brazing, wrap tubing or fitting with a
heat- -sinking material, such a wet cloth.
COIL CONNECTION
TUBE SIZE (IN.)
LIQUID
SUCTION
2
3/8
5/8
2--- 1/2
3/8
3/4
3
3/8
3/4
3--- 1/2
3/8
7/8
4
3/8
7/8
5
3/8
7/8
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in property damage.
DO NOT BURY MORE THAN 36 IN. OF REFRIGERANT
TUBING IN GROUND. If any section of tubing is buried,
there must be a 6- -in. 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.
REFRIGERANT METERING DEVICE
These coils have a factory- -installed hard- -shutoff 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.
CONDENSATE DRAIN LINE CONNECTION
CAUTION
!
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.
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- -in. 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 in. (76 mm) deep and no higher
than the bottom of unit condensate drain opening (See Fig. 2).
Pitch condensate line 1 in. (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.
3" / 76mm
Fig. 2 - - Condensate Trap
3
A08067
Advertisement
