Table of Contents
Advertisement
CONTROL WIRING
On units shipped disassembled, after installation of the
control center, control wiring must be completed be-
tween unit components and control center, solid state
starter, or variable speed drive, when used, using wir-
ing harness furnished. Refer to Form 160.49-N6.
Field wiring connections for commonly encountered con-
trol modifications (by others) if required, are shown on
Form 160.49-PW13.
NOTE: No deviations in unit wiring from that shown on
drawings furnished shall be made without prior
approval of the YORK representative.
POWER WIRING
Chiller with Electro-Mechanical Starter
A 115 volt – single phase – 60 or 50 Hertz power sup-
ply of 15 amperes must be furnished to the control cen-
ter, from the control transformer (2 KVA required) in-
cluded with the compressor motor starter. DO NOT
make final power connections to control center until
approved by YORK representative.
3 PHASE
MOTOR RATED LOAD AMPS
MOTOR
VOLTAGE
50 / 60 Hz
200:1
350:1
A
200-600
65-111
112-224
11-18
C
2300-4160
19-37
B
124-264
A
38-123
FIG. 9 – YK CHILLER MOTOR CONNECTIONS (ELECTRO MECHANICAL STARTER APPLICATION)
YORK INTERNATIONAL
CT RATIO
700:1
1400:1
A
A
A
225-829
830-1790
A
265-518
A
COMPRESSOR MOTOR FIELD CONNECTION DIAGRAM
OIL PUMP – 3 PHASE STARTER
Separate wiring or a fused disconnect switch should be
supplied by the installer.
NOTE: Remote Electro-Mechanical starters for the
chiller must be furnished in accordance with
YORK Standard R-1051 (Product Drawing Form
160.45-PA5.1) to provide the features neces-
sary for the starter to function properly with the
YORK control system.
Each chiller unit is furnished for a specific electrical
power supply as stamped on the Unit Data Plate, which
also details the motor connection diagrams.
NOTE: To insure proper motor rotation the starter power
input and starter to motor connections must be
checked with a phase sequence indicator in the
presence of the YORK representative.
IMPORTANT
DO NOT cut wires to final length or make final con-
nections to motor terminals or starter power input ter-
minals until approved by the YORK representative.
NOTES:
A. Requires passing motor lead thru current transformer (CT) once
before connecting to power supply.
B. Requires passing motor lead thru CT twice before connecting to
power supply.
C. Requires passing motor lead thru CT three times before
connecting to power supply.
FORM 160.52-N1
LD00710
25
Advertisement
Table of Contents
