York YST Manual

WIRING DIAGRAMS
CONTRACTOR _________________________ PURCHASER _____________________________________________
ORDER NO. ____________________________ JOB NAME ________________________________________________
JCI CONTRACT NO. _____________________ LOCATION ________________________________________________
JCI ORDER NO. _________________________ ENGINEER _______________________________________________
REFERENCE DATE ________ APPROVAL DATE ________ CONSTRUCTION DATE _______
New Release Form: 160.67-PW7 (219)
MODEL YST STEAM TURBINE DRIVE
CENTRIFUGAL CHILLER WITH
OPTIVIEW™CONTROL CENTER
Issue Date:
February 28, 2019
JOB DATA:
YST CHILLER MODEL NO. ________________________________________________________
NO. OF UNITS _____________
STEAM TURBINE MODEL_________________________________________________________
OIL PUMP MOTOR _____________ VOLTS, 3-PHASE, _____________ Hz, _____________FLA
REMARKS:
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JOHNSON CONTROLS
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FORM 160.67-PW7
ISSUE DATE: 2/28/2019
This equipment is a relatively complicated apparatus.
During installation, operation maintenance or service,
individuals may be exposed to certain components or
conditions including, but not limited to: refrigerants,
materials under pressure, rotating components, and
both high and low voltage. Each of these items has the
potential, if misused or handled improperly, to cause
bodily injury or death. It is the obligation and respon-
sibility of operating/service personnel to identify and
recognize these inherent hazards, protect themselves,
and proceed safely in completing their tasks. Failure
to comply with any of these requirements could result
in serious damage to the equipment and the property in
IMPORTANT!
READ BEFORE PROCEEDING!
GENERAL SAFETY GUIDELINES
which it is situated, as well as severe personal injury or
death to themselves and people at the site.
This document is intended for use by owner-authorized
rigging, installation, and operating/service personnel. It
is expected that these individuals possess independent
training that will enable them to perform their assigned
tasks properly and safely. It is essential that, prior to
performing any task on this equipment, this individual
shall have read and understood the on-product labels,
this document and any referenced materials. This in-
dividual shall also be familiar with and comply with
all applicable industry and governmental standards and
regulations pertaining to the task in question.
SAFETY SYMBOLS
The following symbols are used in this document to alert the reader to specific situations:
Indicates a possible hazardous situation
which will result in death or serious injury
if proper care is not taken.
Indicates a potentially hazardous situa-
tion which will result in possible injuries
or damage to equipment if proper care is
not taken.
Identies a hazard which could lead to
damage to the machine, damage to other
equipment and/or environmental pollu-
tion if proper care is not taken or instruc-
tions and are not followed.
Highlights additional information useful
to the technician in completing the work
being performed properly.
External wiring, unless specied as an optional connection in the manufacturer’s product line, is not
to be connected inside the control cabinet. Devices such as relays, switches, transducers and controls
and any external wiring must not be installed inside the micro panel. All wiring must be in accor-
dance with Johnson Controls’ published specications and must be performed only by a qualied
electrician. Johnson Controls will NOT be responsible for damage/problems resulting from improper
connections to the controls or application of improper control signals. Failure to follow this warn-
ing will void the manufacturer’s warranty and cause serious damage to property or personal injury.

JOHNSON CONTROLS 3
FORM 160.67-PW7
ISSUE DATE: 2/28/2019
CHANGEABILITY OF THIS DOCUMENT
In complying with Johnson Controls’ policy for con-
tinuous product improvement, the information con-
tained in this document is subject to change without
notice. Johnson Controls makes no commitment to
update or provide current information automatically
to the manual or product owner. Updated manuals, if
applicable, can be obtained by contacting the nearest
Johnson Controls Service office or accessing the John-
son Controls QuickLIT website at http://cgproducts.
johnsoncontrols.com.
It is the responsibility of rigging, lifting, and operating/
service personnel to verify the applicability of these
documents to the equipment. If there is any question
regarding the applicability of these documents, rig-
ging, lifting, and operating/service personnel should
verify whether the equipment has been modified and
if current literature is available from the owner of the
equipment prior to performing any work on the chiller.
CHANGE BARS
Revisions made to this document are indicated with
a line along the left or right hand column in the area
the revision was made. These revisions are to technical
information and any other changes in spelling, gram-
mar or formatting are not included.
MANUAL DESCRIPTION FORM NUMBER
Operation Manual - Model YST Steam Turbine Drive Centrifugal Liquid Chiller with OptiView™ Control
Center Design Level F and G 160.67-O1
Wiring Diagram - Field Control Modications MaxE™ Model YST Chillers (Style F) 160.67-PW2
Wiring Diagram - Model YST Steam Turbine Drive Centrifugal Liquid Chillers Floor Mounted Steam
Condenser Design Level F and G 160.67-PW4
Wiring Diagram - Model YST Steam Turbine Drive Centrifugal Liquid Chillers Top Mount Steam Con-
denser Design Level F and G 160.67-PW5
ASSOCIATED LITERATURE

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FORM 160.67-PW7
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LEGEND
LABEL DESCRIPTION
CS Start/Stop Control Switch
DS Disconnect Switch
FCV Solenoid Or Electrically Actuated Ball
Valve
FLA Full Load Amps
FU Fuse
HGBP Hot Gas Bypass Valve (TCV-100A)
HTR 3-Phase Thermostatically Controlled
3000 Watt Oil Heater at Line Voltage
HW Hotwell
K7, K8, K13,
K14, K17, K18 Relays Mounted on YORK I/O Board
LCV Level Control Valve Actuator (LCV-113)
LE Level Transducer (0-5 VDC Output)
LSH High Level Switch
LT Level Transmitter (4-20 MA DC Output)
MContactor/Motor Starter
MOV Metal Oxide Varistor
MP Manual Motor Protector
MP_A Manual Motor Protector Auxiliary Contact
(see note 19)
MP_S Manual Motor Protector Signaling Contact
(see note 25)
MPU Magnetic Pickup
PE Pressure Tranducer (0.5-4.5 VDC Output)
PGD Proximity Gap Distance (ZE-142)
PT Pressure Transmitter (4-20 MA DC Out-
put)
PRV Pre-Rotation Vanes (TCV-100)
PSHH-112A Compr. Disch. High Press. Cutout, Hard-
wired
PWM Pulse Width Modulated
R Control Relay
RES Resistor
SC Speed Control
SS Speed Switch
ST Speed Transmitter (4-20 MA DC Output)
T Transformer
TB1, TB3,
TB5, TB7
Terminal Block
Factory Wiring -
TB2, TB4 Terminal Block
Field Connection -
TB6 Terminal Block -
Field (bottom) Factory (top)
LABEL DESCRIPTION
TB7 Terminal Block -
Field (left) Factory (right)
TB8 Terminal Block in Power Panel,
Factory -
TB9 Terminal Block in Steam
Condenser Junction Box -
TE Resistance Temperature
Sensing Element
VE Vibration Proximity Probe
VGD Variable Geometry Di󰀨user
VMS Vane Motor Closed Limit Switch
VT Vibration Transmitter
ZS Limit Switch
Field Wiring
Factory Wiring
Circuit Board or Enclosure Boundary
Jack (J1, J2, .....)
Plug (P1, P2, ....)
Wire entrance Hole in Control Panel
Option (when supplied by YORK)
Mechanical Linkage
Shielded Cable
Metal Oxide Varistor
SUPR Transient Suppressor
Ground
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FORM 160.67-PW7
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NOTES
1. This wiring diagram describes the standard elec-
tronic control scheme for use with a steam turbine
drive. For details of eld control modications,
refer to Product Form 160.67-PW2.
2. Field wiring to be in accordance with the National
Electrical Code as well as all applicable codes and
specications. Refer to Form 160.67-PW5 (Top
Mount Steam Condenser) and Form 160.67-PW4
(Floor Mount Steam Condenser) for eld wiring
connections.
3. Numbers along the left side of the diagram are
line identication numbers. The number along
the right side indicates the line number location
of relay contacts. An underlined contact location
signies a normally closed contact.
4. Main Control Panel Class 1 eld wiring terminal
connection points are indicated by numbers with-
in a rectangle i.e. 15 . Main Control Panel factory
wiring terminal connection points are indicated
by numbers within a triangle i.e. 5 . Component
Terminal connection points are indicated by num-
bers within a circle i.e. CI . Numbers adjacent to
circuit lines are the circuit identication numbers.
Power Panel wiring terminal connection points
are indicated by numbers within a hexagon i.e .
L1 . Steam Condenser junction box wiring termi-
nal connection points are indicated by numbers
within a diamond i.e. 80 .
5. To cycle unit ON and OFF automatically and pro-
vide a controlled shutdown. Install a cycling de-
vice between terminals 1 & 13 . (Line 33A) (see
Note 9). If a cycling device is installed, jumper
must be removed between terminals 1 & 13 .
6. Fuse sizes and motor overload setpoints depend
on voltage of single point power supply. See chart
on eld connection diagram on door of panel.
7. To stop unit and not permit it to start again, after a
controlled shutdown install a stop device between
terminals 1 & 8 (Line 32A) (see Note 9). A
remote start-stop switch may be connected to ter-
minals 1 , 7 ,& 8 . (Line 32A) (see Note 9). Re-
mote switches are operative only in the "remote"
operating mode.
8. Contact rating is 5 amps resistive at 120 volts AC
or 240 volts AC.
9. Device contact rating to be 5 milliamperes at 115
volts AC.
10. Three phase power must be properly phased. L1,
L2, & L3 corresponding to phase sequence A, B,
& C.
11. Contact rating is 5 Amps resistive at 250 volts AC
& 30 volts DC 2 Amp inductive (.4 PF) at 250
volts AC & 30 volts DC.
12. Each 115 VAC eld-connected inductive load
I.E. relay coil, motor starter coil, etc. shall have a
transient suppressor wired in parallel with its coil,
physically located at the coil. Spare transient sup-
pressor and control circuit fuses are supplied in
a bag attached to the green ground screw in the
lower left corner of the control panel.
13. Turbine auxiliary oil pump, oil cooler, oil sensors
& turbine oil safety logic are supplied only on
turbines with pressurized lubrication.
14. If optional chilled and condenser liquid low pres-
sure dierential switches are installed, panel must
be congured for "digital" ow sensor. Refer to
Form 160.67-O1.
15. Refer to Operators Manual for a detailed descrip-
tion of chiller operation & all wanring/shutdown
operating points.
16. Do NOT apply voltage on eld wiring terminal
blocks TB4 or TB6. All 115 volt AC power is fed
from terminals 1 & 2.
17. Do NOT apply voltage on eld instrument wiring
terminal block TB7. All instrument loop power is
supplied from terminals 325, 327, & 329 .
18. YST chillers are supplied with automatic starting
as standard. Manual starting is not recommended
and will be supplied by special quote only.
19. Manual motor protector auxiliary contact is open
when operator is in the OFF position, closed when
operator is in the ON or any tripped position.
20. Liquid injection solenoid is supplied on K3, K4,
& K7 compressors only.
21. Optional wiring between the chiller terminal box
and the oor mounted steam condensor is sup-
plied by the factory for installation in conduit by
the electrical installation contractor.
22. For standard top mounted steam condensor cables
28, 30, and 42 are connected directly to devices
shown after the steam condensor is installed in the
eld.

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FORM 160.67-PW7
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23. For standard top mounted steam condenser, the
harnesses from the main junction box and power
panel are connected directly to the steam condens-
er box after the steam condenser is installed in the
eld.
24. For inlet steam pressures up to 200 PSIG, PT-170
Range is 0-300 PSIG and PT-172 Range is 0-100
PSIG. For inlet steam pressures above 200 PSIG,
PT-170 Range is 0-500 PSIG and PT-172 Range
is 0-150 PSIG.
25. Manual motor protector signaling contact is
closed when operator is in the o or on position,
open when operator is in any tripped position.
Trips may be caused by thermal overload, short
circuit, under-voltage, or shunt.
NOTES (CONT'D)

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ELEMENTARY DIAGRAM
LD28558
035-26593-000
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REV. H
FIGURE 1 - ELEMENTARY DIAGRAM

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ELEMENTARY DIAGRAM (CONT'D)
LD28559
035-26593-000
SHT. 1 OF 11
REV. H
FIGURE 2 - ELEMENTARY DIAGRAM

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FORM 160.67-PW7
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LD28560
FIGURE 3 - ELEMENTARY DIAGRAM
ELEMENTARY DIAGRAM

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LD28561
035-26593-000
SHT. 2 of 11
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FIGURE 3 - ELEMENTARY DIAGRAM (CONT'D)
ELEMENTARY DIAGRAM (CONT'D)

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LD28562
035-26593-000
SHT. 3 OF 11
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FIGURE 4 - ELEMENTARY DIAGRAM
ELEMENTARY DIAGRAM

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035-26593-000
SHT. 3 OF 11
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LD28563
FIGURE 5 - ELEMENTARY DIAGRAM
ELEMENTARY DIAGRAM (CONT'D)

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FORM 160.67-PW7
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MICROBOARD DIAGRAM
LD28564
FIGURE 6 - MICROBOARD DIAGRAM

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LD28564
MICROBOARD DIAGRAM (CONT'D)
035-26593-000
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LD28565
FIGURE 6 - MICROBAORD DIAGRAM (CONT'D)

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ELEMENTARY DIAGRAM
LD28566
035-26593
SHT. 5 of 11
REV. H
FIGURE 7 - ELEMENTARY DIAGRAM

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ELEMENTARY DIAGRAM
LD28567
FIGURE 8 - ELEMENTARY DIAGRAM
LD28568
035-26593-000
SHT. 6 OF 11
REV. H

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LD28567
ELEMENTARY DIAGRAM
LD28568
035-26593-000
SHT. 6 OF 11
REV. H
FIGURE 8 - ELEMENTARY DIAGRAM (CONT'D)

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ELEMENTARY DIAGRAM
LD28569
FIGURE 9 - ELEMENTARY DIAGRAM
LD28570
035-26593-000
SHT. 7 OF 11
REV. H