Carrier 09DK054-084 - Manual (Page 10)

66/34% Coil Circuiting Applications: 054 and 064 Units
NOTE: To operate the 054 and 064 condenser units with
66/34% coil circuiting, an accessory fan control kit is
required. Refer to fan control kit installation instruc­
tions for more information.
1. Piping — Refer to Fig. 9 and 16 for field piping details
for 66/34% coil circuiting. Note that tube 16 will require
cuts on the longer leg of the tube. Tube 16 will be used in
the two specified locations. A 7/8-in. OD tube, approxi­
mately 3 in. (72.6 mm) long, must be cut from the remain­
ing tubes (23 or 26) and brazed between the tee (item 8)
and coil header stub. The remaining tubes are not used in
this application and may be discarded.
2. Install Fan-Cycle Pressure Switches and Clamps — Braze 3
valve core bodies (item 5) to designated hole locations on
tubes 19, 21, and 22. Insert valve cores (item 6) into valve
core bodies by threading into place and tightening to 1.5 to
3 in.-lb (169.5 to 339 mN-m). Note that the accessory fan
control kit is required for this coil circuiting. An extra FCPS
and valve assembly is provided with the kit. Install FCPSl,
FCPS2, and FCPS4 (item 7) at designated locations on tubes
19, 21, and 22. Cut the field-supplied 3/8-in. FCPS conduit
at a desired length to fit between each FCPS location and
the junction box on the unit. See Fig. 11 for typical conduit
installation. Feed FCPS wires through each conduit and se­
cure at the switch by utilizing each conduit connector. See
Fig. 13. Secure the conduit at the junction box with 3/8-in.,
field-supplied conduit connectors. Wire FCPSl, FCPS2, and
FCPS4 according to Fig. 14 Note that FCPS2 and FCPS4
are wired in parallel. Fan 4 is shared by the 34% and 66%
refrigeration circuit. If either circuit needs the fan to be on,
it will be on. At the location specified in Fig. 16, clamp hot
gas lines, tubes 15 and 30, using a 1 3/8-in. clamp (item 3)
and a 1 1/8-in. clamp (item 2) with the 4 screws supplied.
Clamp the liquid lines, tubes 21 and 25, with 7/8-in. clamps
(item 1) and 4 screws provided.
100% Coil Circuiting Applications: 074 Units
1. Piping — Refer to Fig. 9 and 17 for field piping details
for 100% coil circuiting. Note that tube 16 requires a cut on
the longer leg of the tube. Two 7/8-in. OD tubes approxi­
mately 3 in. (72.6 mm) long, must be cut from the remain­
ing tubes (22 or 23) and brazed between the tees (item 9)
and coil header stubs. The remaining tubes are not used and
may be discarded.
2. Install Fan Cycle Pressure Switches and Clamps — Braze 2
valve core bodies (item 6) to designated hole locations on
tubes 20 and 24. Insert valve cores (item 7) into valve core
bodies by threading into place and tightening to 1.5 to
3 in.-lb (169 to 339 mN-m). Install FCPSl and FCPS2
(item 8) at designated locations on tubes 20 and 24. Cut the
3/8-in. field-supplied FCPS conduit at a desired length to
fit between each FCPS location and the junction box on the
unit. See Fig. 11 for typical conduit installation. Feed FCPS
wires through each conduit and secure at the switch by uti­
lizing each conduit connector. See Fig. 13. Secure the con­
duit at the junction box with 3/8-in. field-supplied conduit
connectors. Wire FCPSl and FCPS2 according to Fig. 18.
Clamp hot gas line, tube 28, using 2 1/8-in. clamp (item 5)
at the location specified in Fig. 17 with the 2 screws sup­
plied. Clamp the liquid line, tube 25, using 1 1/8-in. clamp
(item 2) and the 2 screws provided.
50/50% Coil Circuiting Applications: 074 Units
1. Piping — Refer to Fig. 9 and 19 for field piping details
for 50/50% coil circuiting. Note that tube 23 will require a
cut, located exactly at the location of the hole in the tube.
Tube 23 will be used in the two locations specified. Two
7/8-in. OD tubes, approximately 3 in. (72.6 mm) long, must
be cut from the remaining tubes (22, 26, or 27) and brazed
between the tees (item 9) and coil header stubs. The re­
maining tubes are not used in this application and may be
discarded.
2. Install Fan Cycle Pressure Switches and Clamps — Braze 2
valve core bodies (item 6) to designated hole locations on
tubes 20 and 24. Insert valve cores (item 7) into valve core
bodies by threading into place and tightening to 1.5 to
3 in.-lb (169.5 to 339 mN-m). Install FCPSl and FCPS2
(item 8) at designated location on tubes 20 and 24. Cut the
3/8-in. field-supplied FCPS conduit at a desired length to
fit between each FCPS location and the junction box on the
unit. See Fig. 11 for typical conduit installation. Feed FCPS
wires through each conduit and secure at the switch by us­
ing each conduit connector. See Fig. 13. Secure the con­
duit at the junction box with 3/8-in. field-supplied conduit
connectors. Wire FCPSl and FCPS2 according to Fig. 18.
Clamp hot gas line, tube 16, at the location specified in
Fig. 19 using two 1 5/8-in. clamps (item 4) and 4 screws
supplied. Clamp the liquid lines, tubes 23, using the two
7/8-in. clamps (item 1) and the 4 screws provided.
68/32% Coil Circuiting Applications: 074 Units
NOTE: To operate the 074 condenser units with 68/32%
coil circuiting, an accessory fan control kit is required.
See accessory installation instructions for more infor­
mation.
1. Piping — Refer to Fig. 9 and 20 for field piping details
for 68/32% coil circuiting. Note that tubes 17 and 20 re­
quire euts on the longer leg of the tubes. Tube 17 will be
used in the two locations specified. Also, a 7/8-in. OD tube,
approximately 3 in. (72.6 mm) long, must be cut from the
remaining tubes (23 or 27) and brazed between the tee
(item 9) and eoil header stub. The remaining tubes are not
used in this application and may be discarded.
2. Install Fan Cycle Pressure Switches and Clamps — Braze 3
core bodies (item 6) to designated hole locations on tubes
20, 22, and 24. Insert valve cores (item 7) into valve core
bodies by threading into place and tightening to 1.5 to
3 in.-lb (169.5 to 339 mN-m). Note that the accessory fan
control kit is required for this coil circuiting. An extra FCPS
and valve assembly is provided with the kit. Install FCPSl,
FCPS2, and FCPS4 (item 8) at designated locations on tubes
20, 22, and 24. Cut the 3/8-in. field-supplied FCPS conduit
at a desired length to fit between each FCPS location and
the junction box on the unit. See Fig. 11 for typical conduit
installation. Feed FCPS wires through each conduit and se­
cure at the switch by utilizing each conduit connector. See
Fig. 13. Secure the conduit at the junction box with 3/8-in.
field-supplied conduit connectors. Wire FCPSl, FCPS2 and
FCPS4 according to Fig. 18. Note that FCPS2 and FCPS4
are wired in parallel. Fan 4 is being shared by the 32% and
68% refrigeration circuit. If either circuit needs the fan to
be on, it will be on. At the location specified in Fig. 20,
clamp hot gas lines, tube 15 with a 1 3/8 in. clamp (item 3)
and tube 16 with a 1 5/8 in. clamp (item 4) with the
4 screws supplied. Clamp the liquid lines, tube 22 with a
7/8 in. clamp (item 1) and tube 25 with a 1 1/8 in. clamp
(item 2) with the 4 screws supplied.
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