Factory-Option Thru-Base Connections; Units Without Thru-Base Connections - Carrier 50KC*A/B06 Series Installation Instructions Manual

UNIT CONNECT
VOLTAGE AS
208, 230 240
460 480
575 600
Fig. 24 — Powered Convenience Outlet Wiring
Using Unit-Mounted Convenience Outlets:
Units with unit-mounted convenience outlet circuits will of-
ten 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 is also checked and de-energi-
zation is confirmed. Observe National Electrical Code Article
210, Branch Circuits, for use of convenience outlets.
Fuse on Power Type:
The factory fuse is a Bussman "Fusetron" T-15, non-renew-
able screw-in (Edison base) type plug fuse.
Duty Cycle:
The unit-powered convenience outlet has a duty cycle limita-
tion. The transformer is intended to provide power on an in-
termittent 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.
NOTICE
Convenience Outlet Utilization
Maximum Continuous use : 8 Amps 24/7
Fig. 25 — Convenience Outlet Utilization Notice
Convenience Outlet Usage Rating:
Continuous usage: 8 amps maximum
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.
PRIMARY TRANSFORMER
CONNECTIONS TERMINALS
L1: RED +YEL H1 + H3
L2: BLU + GRA H2 + H4
L1: RED H1
Splice BLU + YEL H2 + H3
L2: GRA H4
L1: RED H1
L2: GRA H2
50HJ542739
Label

FACTORY-OPTION THRU-BASE CONNECTIONS

This service connection kit consists of two
bulkhead connectors and a
tor, all factory-installed in the embossed (raised) section of
the unit basepan in the condenser section. The
head connector enables the low-voltage control wires to pass
through the basepan. The
allows the high-voltage power wires to pass through the base-
pan. See Fig. 26.
Fig. 26 — Thru-Base Connection Fittings
Check tightness of connector lock nuts before connecting
electrical conduits.
Field-supplied and field-installed liquid tight conduit connec-
tors and conduit may be attached to the connectors on the
basepan. Pull correctly rated high voltage and low voltage
through appropriate conduits. Connect the power conduit to
the internal disconnect (if unit is so equipped) or to the exter-
nal disconnect (through unit side panel). A hole must be field
cut in the main control box bottom on the left side so the 24-v
control connections can be made. Connect the control power
conduit to the unit control box at this hole.

UNITS WITHOUT THRU-BASE CONNECTIONS

1. Install power wiring conduit through side panel open-
ings. Install conduit between disconnect and control box.
2. Install power lines to terminal connections as shown in
Fig. 18.
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 below to
determine the percent of voltage imbalance. Operation on im-
proper line voltage or excessive phase imbalance constitutes
abuse and may cause damage to electrical components. Such
operation would invalidate any applicable Carrier warranty.
Example: Supply voltage is 230-3-60
A B C
MOTOR
B
Average Voltage
Determine maximum deviation from average voltage.
(AB) 227-224 = 3 v
(BC) 231-227 = 4 v
(AC) 227-226 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100x
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
16
3 / -in. electrical bulkhead connec-
4
1 / -in. electrical bulkhead connector
2
LOW VOLTAGE
CONDUIT
CONNECTOR
HIGH VOLTAGE
CONDUIT
CONNECTOR
AB = 224 v
BC = 231 v
AC = 226 v
(224 + 231 + 226)
= =
3
4
227
/ -in. electrical
1
2
3 / -in. bulk-
4
681
= 227
3
= 1.78%