Fig. 27 — field power wiring connections (008-064) – Carrier 50BA User Manual

Page 17

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On 50BA,BB004 and 006 units, field power wires

are spliced to factory wires at the compressor
contactor. On all other sizes, field power connec
tions are made at a terminal block within the control
box (see Fig. 27). Refer to Table 8 for maximum
wire size at terminal block.

Supply voltage must be in accordance with name

plate voltage. On 3-phase units, voltage between
phases must be balanced within 2% and current
within 10% with compressor running. Contact your
local power company for correction of improper
voltage or phase imbalance (see Table 7). Failure of
unit because of phase imbalance constitutes abuse
and can void the warranty.
CONTROL WIRING — On extended voltage
(208-230-v) units, Sizes 50BA,BB006 thru 064, the
control transformer is factory wired for 208-v usage.

If unit is to be used on 230-v system, reconnect pri

mary wiring on transformer as shown on unit wiring
diagram.

OFR ^ m

—(D—''—(D—

FIELD
POWER
SUPPLY

—

----- ♦{¡K@o

------♦{0}®°

TBI

50BA,BB008,0I2

FIELD
POWER

SUPPLY

50BA,BB0l6-054

TB3

-------FIELD WIRING

------- FACTORY WIRING

' L3-----------—[13-

FIELD

POWER ( L2-
SUPPLY 1

, ,

LI-------- Q]-

508A,BB064

NOTE Field power wiring connections on 004 and 006 unit sizes
are

attached

factory

wiring

using

factory-supplied

wire

connectors

Fig. 27 — Field Power Wiring Connections

(008-064)

TO OUTDOOR FAN MOTOR

50BB004,006 (NOTE 2

AND

♦

TB2

!--1 I

-CXO--- 1 5 [-t-t

I Tl

Loÿ-

1----------- A2

;

( NOTE 1 )

L—-{!}—

50BA, BB008,0I2

50BA.BB0I6

50BA,BB024

50BA,BB028

I T3

I—I

-O^Q--- [_3j-- i

-Tl

I
1

50BA.BB064

IFC

50BA,BB044,054

— Control Relay

IFC

— Indoor Fan Contactor

— Jumper

OFR

— Outdoor Fan Motor

Relay

—

Condenser

Fan

Relay, 50BB; Pump Relay, 50BA

TorTC — Thermostat

TB — Terminal Board

_ Field Control Wiring Connections

NOTES

1 Condenser Fan Relay (OFR) shipped with 50BB008 and 012 units

2 Condenser Fan Relay contacts integral to control circuit with 50BB004

and 006 units

3 No provisions for pump relay connection on 50BA004 and 006 units