All Units; Convenience Outlets - Carrier WeatherExpert 48LC Installation Instructions Manual

All Units - -

All field wiring must comply with NEC and all local code
requirements.
Size wire based on MCA (Minimum Circuit Amps) on the
unit informative plate. See Fig. 33 for power wiring
connections to the unit power terminal block and equipment
ground. Maximum wire size is 2/0 AWG per pole.
Units Without Disconnect or HACR Option
TB1
11 12
Disconnect
per NEC
L1 L2
208/230-3-60
460-3-60
575-3-60
Units With Disconnect or HACR Option
Factory
Wiring
T1 T2
Optional
Disconnect
Switch
or HACR
L1 L2
L1 L2
Fig. 33 - - Power Wiring Connections
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.
NOTE: Units ordered with factory- - installed HACR do
not need additional ground- - fault and short circuit over
current protection device unless required by local codes.
Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate. See
Tables 26 and 27. On 3- - phase units, voltages between
phases must be balanced within 2% and the current within
10%. Use the formula shown in the legend for Tables 26
and 27 (see Note 3 on page 79) to determine the percent
of voltage imbalance.
Equip
13
GR Lug
L3 Ground
(GR)
Equip
GR Lug
T3
L3
Ground
L3
(GR)
C12387
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
Operation on improper line voltage or excessive phase
imbalance constitutes abuse and may cause damage to
electrical components. Such operation would invalidate
any applicable Carrier warranty.
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.
Two types of convenience outlets are offered on 48LC
models: Non- - unit powered and unit- - powered. Both types
provide a 125- - volt GFCI (ground- - fault circuit- - interrupter)
duplex receptacle rated at 15- - A behind a hinged access
cover, located on the corner panel of the unit. See Fig. 34.
Control Box
Access Panel
Electric
Disconnect
Switch
Convenience
Outlet
Fig. 34 - - Convenience Outlet Location
Installing 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; 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
CONVENIENCE OUTLET. LOCK- - OUT AND TAG- - OUT
ALL POWER.
Remove the blank cover plate at the convenience outlet;
discard the blank cover.
33
Cover: A weatherproof
POWER TO UNIT
C10641
AND