All Units; Convenience Outlets - Carrier 50HCQA07 Installation Instructions Manual

Units Without Disconnect Option
C C
11 23 11
Disconnect Disconnect
per
NEC
L1
208/230-1-60
208/230-3-60
460-3-60
575-3-60
Units With Disconnect Option
L1 2
Disconnect
L2 4
L3
6
Disconnect factory test leads; discard.
Fig. 21 — Power Wiring Connections

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. 21 and the unit label diagram for
power wiring connections to the unit power terminal blocks
and equipment ground. Maximum wire size is #2ga AWG
(copper only) per pole.
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 field wiring must comply with the NEC and local requirements.
All units except 208/230v units are factory wired for the volt-
age shown on the nameplate. If the 208/230v unit is to be con-
nected to a 208v power supply, the control transformer must be
rewired by removing the black wire with the
spade connector from the 230v connection and moving it to the
200v 1 / -in. male terminal on the primary side of the transform-
4
er. Refer to unit label diagram for additional information.
Field power wires will be connected at line-side pressure lugs
on the power terminal block or at factory-installed option non-
fused disconnect.
NOTE: Check all factory and field electrical connections for
tightness.
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 ex-
ample below to determine the percent of voltage imbalance.
Operation on improper line voltage or excessive phase imbal-
ance 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 tight-
ness.
IFC
(3 Phase
Indoor Motor)
(1 Phase Indoor Motor
13 13
TB
and 3 Phase Unit)
per
NEC
L2 L3
1
Optional
Factory
3
Wiring
Switch
5
1 / -in. female
4

CONVENIENCE OUTLETS

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 50HCQ mod-
els: non-powered and unit-powered. Both types provide a 125-
volt GFCI (ground-fault circuit interrupter) duplex receptacle
rated at 15A behind a hinged waterproof access cover, located
on the end panel of the unit. See Fig. 22.
CONVENIENCE
OUTLET GFCI
Fig. 22 — 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; it must be in-
stalled 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.
Failure to follow this warning could result in personal
injury or death.
Disconnect all power to unit and convenience outlet.
Lock-out and tag-out all power.
1. Remove the blank cover plate at the convenience outlet;
discard the blank cover.
2. Loosen the two screws at the GFCI duplex outlet, until
approximately
1/
2
exposed. Press the gasket over the screw heads.
3. Slip the 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).
4. Mount the weatherproof cover to the backing plate as
shown in Fig. 23.
16
WARNING
PWD-CO TRANSFORMER
PWD-CO FUSE
SWITCH
CONTROL BOX
ACCESS PANEL
WARNING
in. (13 mm) under screw heads is