FORM 160.73-N1 (904)
27
YORK INTERNATIONAL
FIG. 16 –
MOTOR CONNECTIONS (ELECTRO MECHANICAL STARTER APPLICATION)
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.
COMPRESSOR MOTOR FIELD CONNECTION DIAGRAM
LD00710
3 PHASE
MOTOR RATED LOAD AMPS
MOTOR
CT RATIO
VOLTAGE
50 / 60 Hz 200:1 350:1 700:1 1400:1
200-600 65-111
A
112-224
A
225-829
A
830-1790
A
11-18
C
2300-4160
19-37
B
124-264
A
265-518
A
38-123
A
hav ing a clearance hole for a 3/8" bolt, motor ter mi nal
lugs are not furnished.
Chiller with Solid State Starter or
Variable Speed Drive
A chiller equipped with a factory mounted Solid State
Start er or Vari able Speed Drive does not require wiring
to the com pres sor motor. The motor power wiring is
factory con nect ed to the Solid State Starter or Variable
Speed Drive (or an optional factory in stalled disconnect
switch). See Field Wiring Diagram. All wiring to the
control pan el and the oil pump starter is com plet ed by
the factory. A control trans form er is furnished with the
Solid State Starter or Vari able Speed Drive.
INSULATION
(SEE PRODUCT DRAWINGS FORM 160.52-PA1)
DO NOT
fi
eld insulate until the unit has
been leak test ed under the su per vi sion
of the YORK rep re sen ta tive.
Insulation of the type speci
fi
ed for the job, or minimum
thick ness to prevent sweat ing of 30°F (-1°C) surfaces
should be fur nished (by others) and applied to the
evap o ra tor shell, end sheets, liquid feed line to
fl
ow
cham ber, com pres sor suc tion connection, and evaporator
liquid heads and con nec tions. The liquid head
fl
ange
in su la tion must be re mov able, to allow head re mov al for
the tube main te nance. De tails of areas to be insulated
are given on the Product Drawing.
Units are furnished factory anti-sweat insulated on or der
at additional cost. This includes all low tem per a ture
sur fac es except the two (2) cooler liquid heads.
INSTALLATION CHECK –
REQUEST FOR START-UP SERVICE
The services of a YORK representative will be fur nished
to check the installation and supervise the initial start-
up and operation on all chillers installed within the
Con ti nen tal United States.
After the unit is installed, piped and wired as described
in this Instruction, but before any attempt is made to start
the unit, the YORK District Of
fi
ce should be ad vised so
that the start-up service, included in the con tract price,
can be sched uled. Noti
fi
cation to the YORK of
fi
ce
should be by means of Installation Check List and
Request, Form 160.49-CL1, in triplicate.
