Convenience Outlets; Non-Powered Type; Unit-Powered Type; Installing Weatherproof Cover - Carrier WeatherMaster 50HCQ04-12 Service And Maintenance Instructions

CONVENIENCE OUTLETS

WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal inju-
ry 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. Lock-out and tag-out
this switch, if necessary.
Two types of convenience outlets are offered on 50HCQ mod-
els: Non-powered and unit-powered. Both types provide a
125VAC Ground-Fault Circuit-Interrupt (GFCI) duplex recep-
tacle rated at 15A behind a hinged waterproof access cover, lo-
cated on the end panel of the unit. See Fig. 30.
CONVENIENCE
OUTLET GFCI
Fig. 30 — Convenience Outlet Location

Non-Powered Type

This type requires the field installation of a general-purpose
125-volt 15-A circuit powered from a source elsewhere in the
building. Observe national and local codes when selecting wire
size, fuse or breaker requirements and disconnect switch size
and location. Route 125-v power supply conductors into the
bottom of the utility box containing the duplex receptacle.

Unit-Powered Type

A unit-mounted transformer is factory-installed to step-down
the main power supply voltage to the unit to 115-v at the du-
plex receptacle. This option also includes a manual switch with
fuse, located in a utility box and mounted on a bracket behind
the convenience outlet; access is through the unit's control box
access panel. See Fig. 30.
The primary leads to the convenience outlet transformer are
not factory-connected. Selection of primary power source is a
customer-option. If local codes permit, the transformer primary
leads can be connected at the line-side terminals on a unit-
mounted non-fused disconnect or Heating, Air Conditioning
and Refrigeration (HACR) breaker switch; this will provide
service power to the unit when the unit disconnect switch or
HACR switch is open. Other connection methods will result in
the convenience outlet circuit being de-energized when the unit
disconnect or HACR switch is open. See Fig. 31.
PWD-CO TRANSFORMER
PWD-CO FUSE
SWITCH
CONTROL BOX
ACCESS PANEL
UNIT CONNECT
VOLTAGE AS
208, 230 240
460 480
575 600
Fig. 31 — Powered Convenience Outlet Wiring
DUTY CYCLE
The unit-powered convenience outlet has a duty cycle limita-
tion. The transformer is intended to provide power on an inter-
mittent basis for service tools, lamps, etc; it is not intended to
provide 15A loading for continuous duty loads (such as electric
heaters for overnight use). Observe a 50% limit on circuit load-
ing above 8A (i.e., limit loads exceeding 8A to 30 minutes of
operation every hour).

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 to its depth. The cover
must be installed at unit installation. For shipment, the conve-
nience 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.
Electrical shock can cause personal injury and death. Shut off
all power to this equipment during installation. There may be
more than one disconnect switch. Tag all disconnect locations
to alert others not to restore power until work is completed.
1. Remove the blank cover plate at the convenience outlet;
discard the blank cover.
2. Loosen the two screws at the GFCI duplex outlet, until
approximately / -in. (13 mm) under screw heads are
1
2
exposed.
3. 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).
4. Mount the weatherproof cover to the backing plate as
shown in Fig. 32.
19
PRIMARY TRANSFORMER
CONNECTIONS TERMINALS
L1: RED +YEL
H1 + H3
L2: BLU + GRA H2 + H4
L1: RED
H1
Splice BLU + YEL
H2 + H3
L2: GRA
H4
L1: RED
H1
L2: GRA H2
WARNING