Warning – Carrier 50HCQA User Manual

Page 12

Units with Factory--Installed Disconnect —

The factory--installed option disconnect switch is located

in a weatherproof enclosure located under the main

control box. The manual switch handle is accessible

through an opening in the access panel. Discard the

factory test leads (see Fig. 16).

Units Without Disconnect Option

Units With Disconnect Option

Optional

Disconnect

Switch

Disconnect factory test leads; discard.

Factory

Wiring

IFC

(3 Phase

Indoor Motor)

(1 Phase Indoor Motor

and 3 Phase Unit)

208/230-3-60

460-3-60
575-3-60

Disconnect

per

NEC

208/230-1-60

Disconnect

per

NEC

C10241

Fig. 16 -- Power Wiring Connections

All Units: All field wiring must comply with NEC and all

local codes. Size wire based on MCA (Minimum Circuit

Amps) on the unit informative plate. See Fig. 16 and the

unit label diagram for power wiring connections to the

unit power terminal blocks and equipment ground.

Maximum wire size is #2 ga AWG per pole.

Provide a ground--fault and short--circuit over--current

protection device (fuse or breaker) per NEC Article 440

(or local codes). Refer to unit informative data plate for

MOCP (Maximum Over--current Protection) device size.

All field wiring must comply with the NEC and local

requirements.

Convenience Outlets —

ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal

injury or death.
Units with convenience outlet circuits may use

multiple disconnects. Check convenience outlet for

power status before opening unit for service. Locate

its disconnect switch, if appropriate, and open it.

Tag--out this switch, if necessary.

WARNING

Two types of convenience outlets are offered on 50HCQA

models: Non--powered and unit--powered. Both types

provide a 125--volt GFCI (ground--fault circuit--interrupter)

duplex receptacle rated at 15--A behind a hinged waterproof

access cover, located on the end panel of the unit. See

Fig. 17.

Convenience

Outlet

GFCI

Pwd-CO

Fuse

Switch

Pwd-CO

Transformer

Control Box

Access Panel

C08128

Fig. 17 -- Convenience Outlet Location

Installing Weatherproof Cover: A weatherproof

while-in-use cover for the factory-installed convenience

outlets is now required by UL standards. This cover

cannot be factory-mounted due its depth; it must be

installed at unit installation. For shipment, the

convenience outlet is covered with a blank cover plate.

The weatherproof cover kit is shipped in the unit’s control

box. The kit includes the hinged cover, a backing plate

and gasket.

DISCONNECT

ALL

POWER

UNIT

AND

CONVENIENCE OUTLET.

Remove the blank cover plate at the convenience outlet;

discard the blank cover.

Loosen the two screws at the GFCI duplex outlet, until

approximately

-in (13 mm) under screw heads are

exposed. Press the gasket over the screw heads. Slip the

backing plate over the screw heads at the keyhole slots

and align with the gasket; tighten the two screws until

snug (do not over-tighten).

50H