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Step 11 — Make Electrical Connections
WARNING
ELECTRIC SHOCK HAZARD
Failure to follow this warning could result in personal injury or
death.
Unit cabinet must have an uninterrupted, unbroken electrical
ground to minimize the possibility of personal injury if an
electrical fault should occur. This ground may consist of
electrical wire connected to unit ground lug in control
compartment, or conduit approved for electrical ground when
installed in accordance with NEC; ANSI/NFPA 70, latest
edition (in Canada, Canadian Electrical Code CSA [Canadian
Standards Association] C22.1), and local electrical codes.
NOTE: Field-supplied wiring shall conform with the limitations
of minimum 63°F (33°C) rise.
FIELD POWER SUPPLY
For those units without thru-the-curb power, conduit must be used
to route the main power from the condenser end, via the power en-
try in the corner post of the unit (see Fig. 20-22) to either the facto-
ry option disconnect or the bottom of the control box. A 1 in. con-
duit is provided (wrapped around compressor). A second conduit
is provided with factory-installed powered convenience outlet. For
those units that require conduit larger than 1 in., it must be field
supplied. See Fig. 20-22 for various wire routings. See Fig. 23-25
for wiring information.
If the field disconnect is larger than 100A, it must be attached to
the unit using accessory CRDISBKT001A00 (disconnect switch
bracket). See Fig. 26. Follow the instructions provided with this
accessory. For smaller field disconnects, be sure to use 1/2 in.
screws to mount the disconnect directly to the end panel, follow-
ing the instructions on the Field Disconnect Warning Label (see
Fig. 27). In either case, set the disconnect vertical location on the
unit so that a 90 degree fitting can be used to connect the conduit
to the disconnect.
Fig. 20 — Conduit into Factory Option Non-Fused
Disconnect (NFD) or HACR
Fig. 21 — Conduit into Control Box
Fig. 22 — Conduit into Single Point Box
19
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