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Fig. 35 - - Handle and Shaft Assembly for HACR
Units Without Factory- - Installed
Non- - Fused Disconnect or HACR —
When installing units, provide a disconnect switch per
NEC (National Electrical Code) of adequate size.
Disconnect sizing data is provided on the unit informative
plate. Locate on unit cabinet or within sight of the unit per
national or local codes. Do not cover unit informative
plate if mounting the disconnect on the unit cabinet.
All Units —
All field wiring must comply with NEC and all local codes.
Size wire based on MCA (Minimum Circuit Amps) on the
unit informative plate. See Fig. 23 and unit label diagram for
power wiring connections to the unit and equipment ground.
Maximum wire size is #4 ga AWG (copper only) per pole
on contactors and #2 ga AWG (copper only) per pole on
optional non- - fused disconnect or HACR.
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 an additional ground- - fault and short- - circuit
over- - current protective device unless required by local
codes.
All field wiring must comply with the NEC and local
requirements.
All units except 208/230-v units are factory wired for the
voltage shown on the nameplate. If the 208/230-v unit is to
be connected to a 208-v power supply, the control
transformer must be rewired by moving the black wire with
1
the
/
-in. female spade connector from the 230- - v
4
connection and moving it to the 200-v
on the primary side of the transformer. Refer to unit label
diagram for additional information.
Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate. See
Tables 21 - - 22. 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 21
C12281
1
/
-in. male terminal
4
26
and 22, Note 3 (see page 64) to determine the percent of
voltage imbalance. 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.
NOTE: Check all factory and field electrical connections
for tightness.
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- - powered and unit- - powered. Both types
provide a 125- - volt GFCI (ground- - fault circuit- - interrupter)
duplex receptacle rated at 15- - A behind a hinged
waterproof access cover, located on the end panel of the
unit. See Fig. 36.
Convenience
Outlet
GFCI
Pwd-CO
Fuse
Switch
Fig. 36 - - 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 its depth; it must be
installed
at
unit
installation.
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.
Pwd-CO
Transformer
Control Box
Access Panel
Cover:
A
weatherproof
For
shipment,
POWER
TO
UNIT
C08128
the
AND
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