Step 10 - Make Electrical Connections - Carrier WeatherMaster 50HC14 Installation Instructions Manual

Step 10 — 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 (3°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 entry in the corner post of the unit (see Fig. 20-22)
to either the factory option disconnect or the bottom of the
control box. A 1-in. conduit is provided wrapped around
compressor. A second conduit is provided with factory in-
stalled powered convenience outlet. For those units that re-
quire conduit larger than 1-in., the conduit must be field sup-
plied. Figures 20-22 show the wire routings.
If the field disconnect is larger than 100A, it must be at-
tached to the unit using accessory CRDISBKT001A00 —
disconnect switch bracket (see Fig. 23). Follow the instruc-
tions provided with this accessory. For smaller field discon-
nects, be sure to use 1 / -in. screws to mount the disconnect di-
2
rectly to the end panel (see Fig. 24). In either case, set the dis-
connect 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 or HACR
Fig. 21 — Conduit into Control Box
Fig. 22 — Conduit into Single Point Box
Fig. 23 — Mounting Position for Field Disconnects
14
(over 100A)