Carrier 50TCQD17-D24, Инструкции по обслуживанию и техническому обслуживанию, Страница: 18 / 60

18
CONVENIENCE OUTLETS
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Units with convenience outlet circuits can use
multiple disconnects. Check convenience outlet for
power status before opening unit for service. Locate
its disconnect switch, if appropriate, and open it.
Apply Lockout/Tagout to this switch, if necessary.
!
WARNING
Convenience Outlets: Two types of convenience outlets are
offered on 50TCQ models: Non--powered and unit--powered.
Both types provide a 125VAC/15A Ground--Fault Circuit
Interrupter (GFCI) duplex receptacle behind a hinged
waterproof access cover, located on the end panel of the
unit. See Fig. 26.
GFCI
RECEPTACLE
LOCATION
TOP
W
ET
L
OC
AT
IO
NS
C12382
Fig. 26 -- 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. The cover 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.
NOTE : DISCONNECT ALL POWER TO THE UNIT
AND TO THE CONVENIENCE OUTLET. Use approved
Lockout/Tagout procedures.
1. Remove the blank cover plate at the convenience out-
let; discard the blank cover.
2. Loosen the two screws at the GFCI duplex outlet, un-
til approximately
1
/
2
-in (13 mm) under screw heads
are exposed.
3. Press the gasket over the screw heads. Slip the back-
ing 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. 27.
5. Remove two slot fillers in the bottom of the cover to
permit service tool cords to exit the cover.
6. Check cover installation for full closing and latching.
TOP
TO
P
TOP
WET LOCATIO
NS
W
ET
L
OC
AT
IO
NS
COVER - WHILE-IN-USE
WEATHERPROOF
BASEPLATE FOR
GFCI RECEPTACLE
GASKET
GFCI RECEPTACLE
NOT INCLUDED
C09022A
Fig. 27 -- Weatherproof Cover Installation
Non--powered type — This type requires the field
installation of a general--purpose 125VAC/15AC 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 125VAC 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 115VAC 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. 26.
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. 28.