Step 11 - Make Electrical Connections; Field Power Supply; Units With Factory-Installed Non-Fused; Disconnect Or Hacr - Carrier WeatherExpert Puron 50JC04 Installation Instructions Manual

All units must have an external trap for condensate drainage.
Install a trap at least 4-in. (102 mm) deep and protect against
freeze-up. If drain line is installed downstream from the
external trap, pitch the line away from the unit at 1-in. per 10 ft
(25 mm per 3 m) of run. Do not use a pipe size smaller than the
unit connection ( / -in.).
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Step 11 — Make Electrical Connections
WARNING
ELECTRIC SHOCK HAZARD
Failure to follow this warning could result in personal inju-
ry or death.
Unit cabinet must have an uninterrupted, unbroken electri-
cal 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 com-
partment, or conduit approved for electrical ground when
installed in accordance with NEC; ANSI/NFPA 70, latest
edition (in Canada, Canadian Electrical Code CSA [Cana-
dian 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

If equipped with optional powered convenience outlet, the pow-
er source leads to the convenience outlet's transformer primary
are not factory connected. Installer must connect these leads ac-
cording to required operation of the convenience outlet. If an al-
ways-energized convenience outlet operation is desired, connect
the source leads to the line side of the unit-mounted disconnect.
(Check with local codes to ensure this method is acceptable in
your area.) If a de-energize via unit disconnect switch operation
of the convenience outlet is desired, connect the source leads to
the load side of the unit disconnect. On a unit without a unit-
mounted disconnect, connect the source leads to compressor
contactor C and indoor fan contactor IFC pressure lugs with unit
field power leads. See Convenience Outlets on page 15 for pow-
er transformer connections.
The field power wires are connected to the unit at line-side
pressure lugs on compressor contactor C and indoor fan con-
tactor IFC (see wiring diagram label for control box compo-
nent arrangement) or at factory-installed option non-fused dis-
connect switch or HACR. Maximum wire size is #2ga AWG
(copper only) per pole on contactors, #2ga AWG (copper only)
per pole on optional disconnect or HACR, and 4/0 AWG (cop-
per only, see Fig. 17) per pole on terminal or fuse blocks on
units with single point box. See Fig. 18 and unit label diagram
for field power wiring connections.
NOTE: Unit may be equipped with short test leads (pigtails) on
the field line connection points on contactor C or optional discon-
nect switch. These leads are for factory-run test purposes only; re-
move and discard before connecting field power wires to unit con-
nection points. Make field power connections directly to line con-
nection pressure lugs only.

UNITS WITH FACTORY-INSTALLED NON-FUSED

DISCONNECT OR HACR

The factory-installed optional non-fused disconnect (NFD) or
HACR switch is located in a weatherproof enclosure located
under the main control box. The manual switch handle and
shaft are shipped in the disconnect or HACR enclosure. As-
semble the shaft and handle to the switch at this point. Discard
the factory test leads (see Fig. 18).
FIRE HAZARD
Failure to follow this warning could result in personal inju-
ry, death, or property damage.
Do not connect aluminum wire between disconnect switch
and unit. Use only copper wire.
ELECTRIC
DISCONNECT
SWITCH
Fig. 17 — Disconnect Switch and Unit
Connect field power supply conductors to LINE side terminals
when the switch enclosure cover is removed to attach the handle.
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WARNING
COPPER
WIRE ONLY
ALUMINUM
WIRE