Carrier WeatherExpert 50LC Installation Instructions Manual page 21

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. 27. 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.
COVER – WHILE-IN-USE
WEATHERPROOF
Fig. 27 - - 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 supply
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. 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.
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
de- - energization is confirmed. Observe National Electrical
Code Article 210, Branch Circuits, for use of convenience
outlets.
RECEPTACLE
NOT INCLUDED
BASE PLATE FOR
GFCI RECEPTACLE
C09022
is also checked and
Fuse on power type: The factory fuse is a Bussman
"Fusetron" T- - 15, non- - renewable screw- - in (Edison base)
type plug fuse.
UNIT CONNECT
VOLTAGE AS CONNECTIONS
208, L1: RED +YEL
240
230 L2: BLU + GRA
L1: RED
460 480 Splice BLU + YEL
L2: GRA
L1: RED
575 600
L2: GRA
Fig. 28 - - Powered Convenience Outlet Wiring
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.
Convenience outlet usage rating:
See Fig. 29, below.
Fig. 29 - - Convenience Outlet Utilization Notice Label
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.
21
PRIMARY TRANSFORMER
TERMINALS
H1 + H3
H2 + H4
H1
H2 + H3
H4
H1
H2
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C08283