Units Without Factory- - Installed; Non- - Fused Disconnect; All Units; Convenience Outlets - Carrier 50TC Series Installation Instruction

Units Without Factory- - Installed

Non- - Fused Disconnect —
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. 19 for power wiring
connections to the unit power terminal block and
equipment ground. Maximum wire size is #4 ga AWG per
pole.
Units Without Disconnect Option
C
11
Disconnect
L1
208/230-3-60
460-3-60
575-3-60
Units With Disconnect Option
Factory
Wiring
1
Optional
Disconnect
Switch
2
L1
Disconnect factory test leads
and discard.
Fig. 19 - - 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.
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 208-v
on the primary side of the transformer. Refer to unit label
diagram for additional information.
IFC
13 13
per
NEC
L2 L3
3 5
4 6
L2 L3
C09349
1
/ -in. male terminal
4
Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate. 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 10 and 11, Note 3 (see
page 55) 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.
Tag- - out this switch, if necessary.
Two types of convenience outlets are offered on 50TC
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.
20.
Convenience
Outlet
GFCI
Pwd-CO
Fuse
Switch
Fig. 20 - - 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.
16
Pwd-CO
Transformer
Control Box
Access Panel
C08128
Cover: A weatherproof
For shipment, the