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CONVENIENCE OUTLETS
WARNING
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. Lock-out and tag-out
this switch, if necessary.
CONVENIENCE
OUTLET
GFCI
PWRD-CO
FUSE
SWITCH
Fig. 30 — Convenience Outlet Location
Two types of convenience outlets are offered on 48HC
models: Non-powered and unit-powered. Both types provide a
125-volt GFCI (ground-fault circuit-interrupter) duplex recep-
tacle rated at 15-A behind a hinged waterproof access cover,
located on the end panel of the unit. See Fig. 30.
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-mount-
ed 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 gas-
ket.
DISCONNECT ALL POWER TO UNIT AND CONVE-
NIENCE OUTLET. LOCK-OUT AND TAG-OUT ALL
POWER.
Remove the blank cover plate at the convenience outlet; dis-
card the blank cover.
Loosen the two screws at the GFCI duplex outlet, until ap-
proximately
1
/
-in. (13 mm) under screw heads are exposed.
2
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).
Mount the weatherproof cover to the backing plate as
shown in Fig. 31. Remove two slot fillers in the bottom of the
cover to permit service tool cords to exit the cover. Check for
full closing and latching.
PWRD-CO
TRANSFORMER
CONTROL
BOX
ACCESS
PANEL
COVER – WHILE-IN-USE
WEATHERPROOF
Fig. 31 — Weatherproof Cover Installation
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 stepdown the main power suppl voltage to the unit
to 115-v at the duplex 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 the unit-
mounted non-fused disconnect or 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. 32.
Duty Cycle — The unit-powered convenience outlet has a
duty cycle limitation. The transformer is intended to provide
power on an intermittent basis for service tools, lamps, etc; it is
not intended to provide 15-amps loading for continuous duty
loads (such as electric heaters for overnight use). Observe a
50% limit on circuit loading above 8-amps (i.e., limit loads ex-
ceeding 8-amps to 30 minutes of operation every hour).
Test the GFCI receptacle by pressing the TEST button on
the face of the receptacle to trip and open the receptacle. Check
for proper grounding wires and power line phasing if the GFCI
receptacle does not trip as required. Press the RESET button to
clear the tripped condition.
Fuse on power type — The factory fuse is a Bussman "Fuse-
tron" T-15, non-renewable screw-in (Edison base) type plug
fuse.
Using unit-mounted convenience outlets: Units with unit-
mounted convenience outlet circuits will often require that two
disconnects be opened to de-energize all power to the unit.
Treat all units as electrically energized until the convenience
outlet power is also checked and de-energization is confirmed.
Observe National Electrical Code Article 210, Branch Circuits,
for use of convenience outlets.
20
RECEPTACLE
NOT SHOWN
BASE PLATE FOR
GFCI RECEPTACLE
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