Carrier 09DK054-094 - Manual (Page 19)

61l?>3% Coil Circuiting Applications: 084 Units
NOTE: To operate 084 condenser units with
67 / 33 % coil
circuiting, an accessory fan control kit is required.
See accessory installation instructions for more
information.
7. Piping — Refer to Fig. 10 and 25 for field piping de­
tails for 67/33% coil circuiting. Note that tubes 17 and 20
require cuts on the longer legs of the tubes. Tube 17 is used
in the two locations specified. Also, a 7/8-in. OD tube, ap­
proximately 3 in. (72.6 mm) long must be cut from the re­
maining tubes (22 or 27) and brazed between the tee
(item 9) 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 6) to designated hole locations on
tubes 20, 23, 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 loca­
tions on tubes 20, 23, and 24. Cut the 3/8-in. field-supplied
FCPS conduit to fit between each FCPS location and the
junction box on the unit. See Fig. 13 for typical conduit
installation. Feed FCPS wires through each conduit and
secure at the switch using each conduit connector. See
Fig. 15. Secure the conduit at the junction box with 3/8-in.
field-supplied conduit connector. Wire FCPS 1, FCPS2, and
FCPS4 according to Fig. 20. Note that FCPS2 and FCPS4
are wired in parallel. Fan 4 is shared by the 33% and 67%
refrigeration circuit; the fan switches on if either circuit re­
quires it. At the location specified in Fig 25, 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 23 with a 7/8-in. clamp
(item 1) and tube 25 with a 1 1/8-in. clamp (item 2) with
4 screws supplied.
100% Coil Circuiting Applications: 094 Units
Refer to Fig. 11 and 26 for field piping details for 100%
coil circuiting Braze the tees, pipe, and elbows to mani­
fold the hot gas and suction tubes as shown in Fig. 26. The
fan cycle pressure switches are factory supplied and in­
stalled.
50/50% Coil Circuiting Applications: 094 Units
Unit piping and fan cycle pressure switches are factory
supplied and installed for 50/50% coil circuiting. No field
modifications to coil circuiting are required. See Fig. 11
and 27 for piping details.
THREE AND EOUR COIL SPLIT, COIL CIRCUITING
APPLICATIONS; 054-084 UNITS ONLY
NOTE: To operate 054-084 condenser units with the 3
and 4 coil split coil circuiting, the fan control kit is re­
quired. See accessory installation instructions for more
information.
7. Piping — Piping is not provided in the tubing package
for these coil circuiting options. Tubing is field fabricated
and installed according to the coil circuiting shown in
Fig. 9. For pipe sizing information, refer to Refrigerant Line
Sizing, page 20. To secure the piping, it should be routed
to the brackets supplied on the unit.
100 %
#
1 Dimensions in ( ) are in millimeters.
2 See Fig 5 for tubing package contents
Fig. 14 — 100% Coil Circuiting; 054 and 064 Units
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