Johnson Controls YZ Quick start guide

Unit Wiring and Field Connections for YZ
Centrifugal Chiller with Magnetic Bearing
Controller
Wiring diagram
Contractor
Order number
JCI contract number
JCI order number
Purchaser
Job name
Location
Engineer
Reference Date:
Approval Date:
Construction Date:
Job data
Chiller model number YZ
Number of units
System
Motor
Variable speed drive (VSD)
Evaporator
Condenser
Stage end
Form Number: 161.01-PW4 (220) Supersedes: 161.01-PW4 (1119)
Issue Date: 2020-02-28

General safety guidelines
Important: Read before proceeding.
This equipment is a relatively complicated apparatus. During rigging, installation, operation,
maintenance, or service, individuals may be exposed to certain components or conditions including,
but not limited to: heavy objects, 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 responsibility of rigging, installation, and
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 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 individual 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:
DANGER
Indicates a possible hazardous situation which will result in death or serious injury if proper care is not
taken.
WARNING
Indicates a potentially hazardous situation which will result in possible injuries or damage to equipment
if proper care is not taken.
CAUTION
Identifies a hazard which could lead to damage to the machine, damage to other equipment and/or
environmental pollution if proper care is not taken or instructions and are not followed.
Note: Highlights additional information useful to the technician in completing the work being
performed properly.
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller2

WARNING
External wiring, unless specified 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 accordance
with Johnson Controls’ published specifications and must be performed only by a qualified 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 warning will void the
manufacturer’s warranty and cause serious damage to property or personal injury.
Changeability of this document
In complying with Johnson Controls’ policy for continuous product improvement, the information
contained 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 Johnson 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, rigging, 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.
Revision notes
Revisions made to this document are indicated in the following table. These revisions are to
technical information, and any other changes in spelling, grammar, or formatting are not included.
Affected pages Description
13 Option removed from HGBP actuator
74 Option removed from OptiView hot gas bypass
MSDS information
Material Safety Data Sheets (MSDS) information can be obtained by calling [phone] in
the U.S. or by e-mailing [email protected]. Provide the product name, manufacturer, part
number, and the specific language required. JCI employees can refer to the following for more
information: https://my.jci.com/sites/BE/NASafety/safety-homepage.
3Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller

Associated literature
Manual description Form number
YZ Unit Operations and Maintenance Manual 161.01-OM1
YZ Installation and Reassembly Manual 161.01-N1
YZ Installation Checklist and Request for Startup 161.01-CL1
YZ Startup Checklist 161.01-CL2
YZ Field Connections 161.01-PW1
YZ Field Control, Wiring and MBC Modifications 161.01-PW2
YZ VSD Wiring Diagrams 161.01-PW3
Centrifugal Chiller Long Term Storage 50.20-NM5
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller4

Nomenclature
Compressor Family
Diffuser Type
Compressor Size Code
Compressor Cycle
A N 030 N A - A A
Motor Configuration
Bearing Configuration
Bearing Family
Motor Family
Motor H P Code
M A 033 A A
Product Family
Stage End Name
Motor End Name
Special Contract
VSD Name
Unit Mod Level
YZ - MA033 AN030 P042N A -
Impeller Configuration
Flowpath Configuration
Mechanical Configuration
MOTOR END NAMING
STAGE END NAMING
SYSTEM NOMENCLATURE
VSD Family
cUL / cETL
VSD Output Amp Code
PYT 0330 G X N01 Z C 30 B 02 M L Z - 46 A
VARIABLE SPEED DRIVE NOMENCLATURE
Optional Filter
Z = Base Model
H = Filter Model
Design Center
Mounting System
Enclosure Type
0330 = 330 A
0420 = 420 A
0780 = 780 A
1020 = 1020 A
1280 = 1280 A
G = Global
X = Unit
N01 = NEMA 1
M = Magnetic
L = Oil
LD27334a
Chiller Type
Z = YZ
Cooling System
C = Condenser Liquid
W = Water
Heat Exchanger Rating
30 = 300 psig
Input Type
B = Circuit Breaker
Circuit Breaker Rating
02 = 250 A
04 = 400 A
06 = 600 A
08 = 800 A
12 = 1200 A
Bearing Type
Input Voltage / Frequency Codes
40 = 380 V / 60 Hz
50 = 380 V / 50 Hz
42 = 400 V / 60 Hz
43 = 400 V / 50 Hz
68 = 415 V / 50 Hz
46 = 460 V / 60 Hz
Mod Level
5Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller

Cond Length (Feet)
LD26925
EVAPORATOR NAMING
Evap Hinges
Evap Water Inlet Side
Evap Water Connection Type
Cond Tube Type
Cond Bundle Fill
Cond Pass Limit
LR = Inlet Left, Outlet Right
LL = Inlet Left, Outlet Left
RL = Inlet Right, Outlet Left
RR = Inlet Right, Outlet Right
F = Flanges
G = Grooved
A = AGS Victaulic
B = Both Waterboxes
N = No Hinges
2, 3 Pass
Cond Hinges
Cond Nozzle Arrangment
Cond Water Connection Type
B = Both Waterboxes
N = No Hinges
F = Flanges
G = Grooved
A = AGS Victaulic
Evap Tube Type
Evap Bundle Fill
Evap Pass Limit
2, 3 Pass
Evap Family
Evap Diameter (Inches)
Evap Mod Level
Evap Length (Feet)
Evap Bundle Code
Evap Number of Passes
Evap Waterbox Mod Level
Evap Waterbox Family
Evap Waterside DWP
Cond Family
Cond Diameter (Inches)
Cond Mod Level
Cond Bundle Code
A = 3/4 in. Tubes 1 = 1 in. Tubes
C = Compact Welded
M = Marine Welded
1 = 150 psig 3 = 300 psig
1, 2, 3 Pass
Cond Number of Passes
Cond Waterbox Mod Level
Cond Waterbox Family
Cond Waterside DWP
1 = 150 psig 3 = 300 psig
A = 3/4 in. Tubes 1 = 1 in. Tubes
C = Compact
M = Marine
1, 2, 3 Pass
F A 21 12 - A 2 Z 750 - 2
C A 1 G LR B
EVAPORATOR WATERBOX NAMING
C A 21 12 - A 2 Z 750 - 2
CONDENSER NAMING
C A 1 G LR B
CONDENSER WATERBOX NAMING
LR = Inlet Left, Outlet Right
LL = Inlet Left, Outlet Left
RL = Inlet Right, Outlet Left
RR = Inlet Right, Outlet Right
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller6

Unit wiring
1. This wiring diagram describes the standard electronic control scheme for use with a YORK
Variable Speed Drive (VSD).
2. Field wiring to be in accordance with the National Electrical Code (NEC) and all other applicable
codes and specifications. Refer to 161.01-PW3 for field connections.
CAUTION
Field wiring contacts may have voltage present when power is removed. Field wiring contacts could be
connected to external power sources.
3. Numbers along the left side of the diagram are line identification numbers. The number along
the right side indicates the line number location of relay contacts. An underlined contact
location signifies a normally closed contact.
4. Main Control Panel Class 1 Field Wiring Terminal connection points are indicated by numbers
within a rectangle. Main Control Panel Factory Wiring Terminal connection points are indicated
by numbers within a triangle. Component terminal markings are indicated by numbers within
a circle. Numbers adjacent to circuit lines are the circuit identification numbers.
Table 1: Connection points
Connection point Example
Main Control Panel Class 1 Field Wiring Terminal
Main Control Panel Factory Wiring Terminal
Component terminal markings
5. To cycle unit ON and OFF automatically with contacts other than those shown, install a cycling
device between terminals 1 and 13 (Line 38) (see Note 7). If a cycling device is installed, the
jumper must be removed between terminals 1 and 13.
6. A remote run-stop switch may be connected to terminals 1 and 7 (Line 32) (see Note 7).
Remote run-stop switch (Line 32) is operative only in the “Remote” operating mode.
7. Device contact rating to be 5 mA at 115 VAC.
8. Contact rating is 5 A resistive at 120 VAC or 240 VAC.
9. For wiring diagrams of the VSD, refer to the YZ service manual 161.01-M3.
7Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller

10. A jumper is installed between terminals 21 and 24 for normal operation. To check motor
rotation on initial start-up, the jumper may be removed and a momentary switch is installed
between terminals 21 and 24. Press the Start key on the display screen of the OptiViewTM
Control Panel. After initialization of the OptiView, jog the motor with the momentary switch.
Once proper rotation is obtained, replace the momentary switch with the jumper. The
momentary switch must have a minimum contact rating of 1 FLA, 10 LRA at 115 VAC.
CAUTION
A temporary momentary switch or jumper is the only connection permitted between terminals 21 and
24. Connections of any other devices to either terminals 21 or 24 may cause inadvertant compressor
start-up.
11. VSD is setup to trip at 105% FLA.
12. Contact rating is 5 A resistive at 250 VAC and 30 VDC, 2 A inductive (0.4 PF) at 250 VAC and 30
VDC.
13. Field connected control power supply is not required, as a factory installed transformer is
provided inside the Variable Speed Drive (VSD).
14. Maximum allowable current draw for the sum of all loads is 2 A holding, 10 A inrush.
15. Each 115 VAC field-connected inductive load, that is, the relay coil, motor starter coil, and
similar components, must have a transient suppressor wired in parallel with its coil, physically
located at the coil. Spare transient suppressors and control circuit fuses are supplied in a bag
attached to the green ground screw in lower left corner of the control panel.
Note: Drawing number: 035-26662-000 REV E, SHT. 4
Legend
Table 2: Wiring diagram legend
Label Description
10L 2T protector (346 V and 600 V units only)
1T Class 2 power supply transformer
2T Class 2 power supply transformer
3M Condenser pump motor starter
1R Compressor motor (K18 - located on I/O board)
1SW Safety stop switch
BATT Battery
CP Condenser pressure (provided by transducer)
EEV Electronic expansion valve
EP Evaporator pressure (provided by transducer)
FLA Full load amperes (compressor motor)
FU Fuse
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller8

Table 2: Wiring diagram legend
Label Description
HGBP Hot gas bypass
HPCO High pressure cutout
K13, K14, K17 Relays mounted on I/O board. Refer to the operations manual Form 161.01-OM1.
L1 Inductor 4 A, 9 mH (460 VAC) or 8 A, 3 mH (230 VAC)
LCWT Leaving chilled water temperature
LLS Liquid level sensor (probe)
MBC Magnetic bearing controller
MOV Metal oxide varistor
MWT Motor winding temperature
OVA Cond. level control actuator
RES Resistor
Resistance temperature sensing element
Transient supressor
Terminal block, factory wiring
Terminal block, field connection
TB6 Terminal block, field (botttom), factory (top)
TB7 Terminal block, field (botttom), factory (top)
UPS Uninterruptible power supply
VGD Variable geometry diffuser
VSOP Variable speed oil pump
xSOL Solenoid valve
Field wiring
Factory wiring
Circuit board or enclosure boundary
Jack (J1, J2,…)
Plug (P1, P2, …)
Wire entrance hole in control panel
Option (as and when supplied) by YORK
Mechanical linkage
Shielded cable
Metal oxide varistor
Terminal located in starter (TB1 or 1TB)
Note: Drawing number: 035-26662-000 REV E, SHT. 5
9Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller

Elementary wiring diagram
Figure 1: Elementary wiring diagram
LD27179
1
L
1
1FU
3
2
1
2
3
4
5
27
26
40
41
45
44
43
42
LT BLU
GRN/YEL
1T
1
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
C
29
16
6
53
K18
K14
K13
33
5, 7, 10, 19
64
62
61
55
56
151
150
34
32
1R
K18
25
22
23
1R-1
(K18)
1R-2
(K18)
TO LINE 39
35
1R-3
(K18)
36
2FU
165
161
162
164
154
155
156
157
K17
24
VAC
1
2
158
160
163
164
159
16
53
16
15
17
HPCO
59
GROUNDED
CONDUCTOR
RED
2
5
162
CONTROL SUPPLY
115VAC 50/60Hz
20A OR 2.0KVA SOURCE
SEE NOTE 13
7 AMP 600V
BUSS KTK-R-7
RUN
CONTACTS
REMOTE MODE
READY TO START
CYCLING
SHUTDOWN
ALARM
SAFETY
SHUTDOWN
ALARM
WARNING
ALARM
7 AMP 600V
BUSS KTK-R-7
I/O
BOARD
031-03631
CHILLED
LIQUID PUMP
RUN
TO FLOW SWITCHES, COND. LEVEL CONTROL
ACTUATOR AND OPTIONAL HGBP
(SEE NOTE 11)
MOTOR CONTROLLER FAULT
(OPEN ON FAULT)
153
152
CONDENSER LIQUID
PUMP RUN
2
1
J2
315
TB7
VGD
SHUTDOWN
TO PURGE COMP. RUN
RELAY (K120)
(PURGE PANEL)
162
R1
5
TB15
PURGE REGEN
SUPR
DRAIN TANK SOL
TO REGEN TANK
HTR RELAY (K122)
(PURGE PANEL)
6FU
166
PURGE PUMP RUN
RELAY (K121)
(PURGE PANEL)
PURGE INLET SOL
PURGE PUMP SOL
PURGE REGEN
TANK SOL
29
TB6
CLL
CL1
58
CL1
SUPR
SUPR
SUPR
29
TB6
R
1
2
1
2
1
2
1
2
5SOL
4SOL
7SOL
6SOL
(OPTIONAL)
(OPTIONAL)
TB7
2A 125V
CL1
MOTOR COOLING
SUPR
BOOSTER
1
TB6
M
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller10

Figure 1: Elementary wiring diagram
LD27180
035-26662-000
REV E, SHT. 1
1
2
1
70
7
1
19
20
1
2
3
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
J1-
1
24
25
26
27
28
29
30
33
34
35
36
37
2
2
81
50
4
5
6
7
8
9
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
1
1
12
13
9
1
95
11
38
71
1
31
32
I/O
BOARD
031-03631
CONT'D.
REMOTE LCHLT SETPOINT
OFFSET (PWM SIGNAL)
REMOTE CURRENT LIMIT
SETPOINT (PWM SIGNAL)
REMOTE/LOCAL
CYCLING DEVICES
CHILLED LIQUID FLOW
SWITCH (OPTIONAL)
MULTI-UNIT
SEQUENCE
CYCLING
1
31
AUXILIARY
SAFETY
SHUTDOWN
REMOTE
RUN/STOP
TO
MICRO
BOARD
J19
R3
8
30
CONTROL VOLTAGE
82
R2
TB1
TB15
TB14
TB3
TB2
CONDENSER LIQUID
FLOW SWITCH
(OPTIONAL)
21
4
22
21
SAFETY STOP
1SW
11
12
28
TB13
MBC FAULT
(OPEN ON FAULT)
162
18
MBC LEVITATED
CL1
5
11Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller

Figure 1: Elementary wiring diagram
LD27251
2
DISPLAY
40
39
41
42
43
44
45
46
47
48
49
50
52
51
1
TO
MICROBOARD
J5
J2-
50
TO
MICROBOARD
J6
2
ROW 3
ROW 4
ROW 2
ROW 1
COL 5
1
2
3
4
5
6
7
8
9
10
11
12
13
COL 6
TO MICRO
BOARD
KEYPAD
COL 7
COL 4
COL
[
STATIC SHIELD
J1-
COL 1
COL 2
COL 3
1
2
CN2
1
2
2T
24 VAC
FOR (EEV)
BOARD
SEE
SHEET 6
D8
SEE
SHEET 6
D8
TO POWER
SUPPLY
24
21
JOG LOCATION
SEE NOTE 10
A1
A2
B1
MOTOR
TO I/O BOARD
LINE 4
25
5FU
5AMP
125V
4
1SW
B2
22
21
C1
C2
A
B
C
1-1
1-4
2-1
D
2-4
E
F
1-2
1-4
G
2-2
2-4
1-3
1-4
H
J
2-3
2-4
K
DRN
L
M
T
RED
BLK
BLU
BLK
WHT
BLK
YEL
BLK
GRN
BLK
BRN
BLK
(TO VSD MWT CPC)
320
321
2
1
CL1
TO VSD PLUG, PIN A
(SEE SHEET 6)
(TO VSD VGD CPC)
1
2
3
GND
48 VDC
RTN
GND
DRAIN
A
B
GND
VGD
(TO OV PANEL)
(CABLE 32)
TB4-2
TB4-3
TB5-153
TB7-315
TB7-306
5
6
8
A
B
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller12

Figure 1: Elementary wiring diagram
LD27252b
A1
A2
B1
MOTOR
B2
C1
C2
A
B
C
1-1
1-4
2-1
D
2-4
E
F
1-2
1-4
G
2-2
2-4
1-3
1-4
H
J
2-3
2-4
K
DRN
L
M
T
RED
BLK
BLU
BLK
WHT
BLK
YEL
BLK
GRN
BLK
BRN
BLK
(TO VSD MWT CPC)
(TO VSD VGD CPC)
1
2
3
GND
48 VDC
RTN
GND
DRAIN
A
B
GND
VGD
(TO OV PANEL)
(CABLE 32)
TB4-2
TB4-3
TB5-153
TB7-315
TB7-306
5
6
8
A
B
TB4-4
4
025-44679-000
ACTUATOR WIRING
MOTOR WINDING
TEMPERATURE WIRING
(TO VSD VGD CPC)
1
2
GND
+48 VDC
RTN
DRAIN
1
2
CASE
VGD
(TO OV PANEL)
(CABLE 34)
TB4-3
TB4-4
1
5
TB4-2
2
025-50961-000
ACTUATOR WIRING
(TO OV PANEL)
(CABLE 35)
TB5-153
TB7-315
TB7-306
1
5
3
TB7-306
7
J-2
RED
J-3
J-1
BLK
WHT
CONDENSER LEVEL
CONTROL ACTUATOR
(CLCA)
J-2
RED
J-3
J-1
BLK
WHT
HGBP ACTUATOR
22
23
TO CONTROL PANEL
(SEE SHEET 7)
TO CONTROL PANEL
(SEE SHEET 7)
SUPR
29B
2M
2
1
4SOL
PURGE PUMP SOLENOID
VALVE
SUPR
29C
2N
2
1
5SOL
PURGE INLET SOLENOID
VALVE
(OPTIONAL)
PURGE REGEN TANK
SOLENOID VALVE
SUPR
29D
2P
2
1
7SOL
TO PURGE SOLS PLUG
(SEE SHEET 7)
TO PURGE SOLS PLUG
(SEE SHEET 7)
TO REGEN SOLS PLUG
(SEE SHEET 7)
SUPR
3
2F
2
1
6SOL
(OPTIONAL)
PURGE REGEN DRAIN TANK
SOLENOID VALVE
TO REGEN SOLS PLUG
(SEE SHEET 7)
SUPR
163
2H
(MCB)
MOTOR COOLING BOOSTER
TO (MCB) PLUG
(SEE SHEET 7)
M
GND
(PE14)
GNDA
(PE9)
GNDA
(PE11)
GND
(PE10)
GND
(PE8)
WHT
BLK
WHT
BLK
WHT
BLK
WHT
BLK
WHT
BLK
J-2
RED
J-3
J-1
BLK
WHT
FFBP ACTUATOR
21
(OPTIONAL)
TO CONTROL PANEL
(SEE SHEET 7)
035-26662-000
REV G, SHT. 3
13Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller

OptiView control panel wiring diagram
Figure 2: OptiView control panel wiring diagram
LD27253a
1
95
34
2
3
62
155
2
1
33
61
6
R1
11
82
1
31
9
1
13
12
1
20
19
1
8
7
1
J2
TB9
TB5
32
70
18
223
225
22
161
163
162
158
160
159
58
59
1
164
TB15
165
J1
1
TB3
TB11
81
1
29
40
43
42
27
41
150
151
152
153
154
156
157
164
36
35
37
38
39
16
49
50
G
L
2
RED
LT BLU
GRN/YEL
16
2
16A
CL1B
J20
SHLD
GND
J10
J6
J5
J18
+
-
SHLD
GND
+
-
1
J7
J8
1
J9
J19
1
1
1
1
12
24
13
49
50
2
22
11
12
1
1
10
20
11
J22
1
JP24
1
JP23
1
1
JP22
JP21
1
6
7
12
J14
1
1
1
1
JP11
JP9
JP10
JP12
1
JP25
1
J1
F2
F1
F3
F4
1
J3
7
4
-12V
+12V
+24V
1
+12V
GND
GTX
DTR1
TXD1
RXD1
DSR1
GND
GRX
1
6
1
-
+
GND
SHLD
+12V
J15
J24
J25
J29
J30
TB10
1
1
1
V+
IN1
IN2
IN3
IN5+
IN5-
+5V
-
+
GND
TB1
1
1
TB3
J23
1
2
49
50
1
2
9
10
JP7
JP8
1
JP5
1
1
1
SMARC MODULE
SW1
1
ON
303
317
307
318
309
311
319
315A
308A
316A
SHIELD
RED
BLK
GND
IN6+
IN6-
OUT
JP4
JP2
JP3
GND
1
1
1
1
TB6
TB5
TB7
TB8
J21
1
2
4
3
MICROBOARD
031-03630
TO
DISPLAY
TO
KEYPAD
I/O BOARD
031-03631
J2 PRINTER
& BAS
J12
COM3
J13
MC1
TB2
VSOP/MBC
TB4
VGD
SD CARD
SLOT J26
J33
USB
K18
(1R RELAY)
TO J9 ON LTC
I/O BD.
5A
15
CL1H
2C
2B
6
16
6
CL1D
CL1C
29
ORG
BLU
30
71
R3
TB14
2
28
80
1
TB13
2C
28
CL1D
TB12
TB10
17
64
TB7
23
25
25
C
C
5B
TB8
TB6
26
56
55
45
44
TB4
R2
TB2
TB1
315C
WHT
CABLE
32
3
34
165
21
23
2
6
52
7
29
49
48
50
39
51
1
5
4
9
11
24
12
15
19
32
32
32
WHT
5C
1A
PE5
JP29
JP27
(TB6)
33
TX
RX
TX
RX
58
1B
163
GRN
SEE NOTE 16
EFS
CFS
(OPTIONAL)
32
OPTIONAL
CABLES 21, 22
TO
DISPLAY
22
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller14

Figure 2: OptiView control panel wiring diagram
LD27254a
TB6
2
29
25
24
2
2
PE
29
4
29D
21
R24
25
LA
1
1FU
5FU
PE
PE
4
21
R24
2
2B
2F
2D
2R
1
2
1
L
CL1C
L
L
LB
CLL
CLLA
CL1
2FU
TB7
16
5
5
166
162
15
PE
53
PE
5
162
5
162
162
15
16A
166
314
302
314
302
PE
306
308
316
306
308
316B
308B
316
315
315C
315B
PE8
CABLE
32
RED
4FU
6FU
5A
5B
PE11
2A 125V
6FU
PE9
PE10
5A 125V
4FU
2
RED
L
L
7A
600V
7A
600V
29B
29A
5FU
24
2
2P
1B
LA
PE
PE1
32
1
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
REGEN SOLS
PURGE SOLS
PURGE PANEL
VSD
PE11
PE9
29D
2P
2M
2F
3
PE10
PE8
2N
29C
29B
2
3
B
1
A
C
D
2
PE
CLL
24
R24
34
165
29A
2L
5C
L
2E
1
1A
C
1
CL1A
CL1B
CL1E
CL1G
CL1H
L
C
1
L
C
1
L
C
L
CLLA
L
C
L
CLLB
RED
1R
11
14
(TB1)
A1
A2
LB
2R
L
G
CLLB
MOV
BLK
(TB1)
DRN
CAB1 TO
MICROBOARD
TB-1
L
PE4
315
CL1
2L
2A
LT BLU
2N
2M
2H
29C
29
5A 125V
PE14
PE13
1
6
5
4
3
2
MCB
PE13
2A
2H
163
58
PE14
PE
BLK
035-26662-000
REV G, SHT. 8
15Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller

OptiView control panel microboard (031-03630)
Figure 3: OptiView control panel microboard (031-03630)
LD27255
POWER SUPPLY
MICROBOARD
031-03630
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller16

Figure 3: OptiView control panel microboard (031-03630)
LD27256
035-26576-000
REV D, SHT. 1
MICROBOARD
031-03630
To Display
(On Door)
(See Sheet. 2)
To Display
(On Door)
(See Sheet. 2)
To Keypad
(On Door)
17Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller

OptiView control panel microboard (031-03630) details
Figure 4: OptiView control panel microboard (031-03630) details
LD27257
REMOTE CURRENT
LIMIT SETPOINT
22
21
9
20
8
19
7
18
6
17
5
16
4
13
1
2
14
3
15
1
J8-
12
2
+5V
+5V
GND
4-20 MA INPUT
0 TO 10V INPUT
0 TO 10V INPUT
0 TO 10V INPUT
0 TO 10V INPUT
GND SPARE
+5V SPARE
GND
+5V
+5V
GND
4-20 MA INPUT
4-20 MA INPUT
4-20 MA INPUT
+5V
GND
J7-
12
+5V
INPUT
GND
23
24
NOT USED
2
4
WHT
BLK
4
2
+5V
GND
INPUT
STALL
DETECTOR
BOARD
031-02418
10
INPUT
11
GND
J2-1
J2-4
J2-3
J1-3
J1-2
J1-1
LVD1G1N1
GND
+5V
LVD1G1N0
4
3
2
1
5
6
7
8
+5V
GND
LVD1G1N2
GND
+5V
12
11
10
9
LVD1G1N3
+5V
GND
J14-
J2-2
RED
BLK
GRN
BLK
WHT
NOT USED
WHT
KEY IN
KEY OUT
1
GND
J18-
13
12
11
10
9
8
7
6
5
4
3
2
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
9
8
7
6
5
4
50
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
3
2
1
TO
KEYPAD
1
2
3
4
4
5
1
2
3
BAS
POWER
(OPTION)
CURV
LWT
I
GND
-12VF
+12VF
J22-
J5-
GND
SHFCLK
LP (HSYNC)
FLM (VSYNC)
GND
RO
R1
R2
R3
R4
R5
GND
G0
G1
G2
G3
G4
G5
GND
B0
B1
B2
B3
B4
B5
GND
DISP EN
SW_VDD
SW_VDD
SW VDD
GND
GND
GND
GND
GND
GND
PID1
GND
PID0
GND
NO CONNECT
NO CONNECT
ROW 4
ROW 3
ROW 2
ROW 1
COL 7
COL 6
COL 5
COL 4
COL 3
COL 2
COL 1
COL 0
CURI
LWTV
GND
+24VF
J21-
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
J6-
NO CONNECT
NO CONNECT
BRIGHTNESS CONTROL -
BRIGHTNESS CONTROL WIPER
BRIGHTNESS CONTROL +
EN BKLT
GND
GND
+V
+V
1
2
3
10
4
5
6
7
8
9
TO
DISPLAY
BACKLIGHT
1
2
3
4-20mA
RET
0-10V
TB8-
1
2
3
TB7-
4-20mA
RET
0-10V
1
2
3
TB6-
WHT
4-20mA
RET
0-10V
TO
DISPLAY
+
-
1
3
+
-
1
3
TO 24 VAC SUPPLY
(OPTIONAL) CFS
CONDENSER
FLOW SWITCH
(OPTIONAL) EFS
CHILLED
LIQUID
FLOW SWITCH
RED
WHT
BLK
DISCHARGE
PRESSURE
TRANSDUCER
(0.5-4.5V)
22
BLK
TO TB7-5
TO TB7-162
RED
(OPTIONAL)
HEAD PRESSURE
CONTROL
RED
TO TB7-162
WHT
TO TB7-5
23
BLK
LIQUID
PURGE TANK HIGH LEVEL SWITCH
PURGE TANK HIGH LEVEL SWITCH
WHT
BLK
TB1
1
2
3
4
5
6
7
8
9
10
V+
IN 1 (UPS LINE/ CHARGING)
IN 2 (UPS INVERTER)
IN 3 (UPS FAULT)
IN 5+
IN 5-
IN 6+
IN 6-
GND
OUT
TB4
1
2
3
4
+5V
-
+
GND
TO VGD
ORG
BLU
WHT
HGBP
ACTUATOR
MOV
3
1
2
MOV
3
2
1
COND. LEVEL
CONTROL ACTUATOR
(CLCA)
BLK
YEL
ORG
BRN
RED
TO
UPS
SDC
24
(OPTIONAL)
SUCTION LIQUID
SENSOR
(OPTIONAL)
2
1
3
51
GND
NOT USED
STALL/ SURGE
DETECTION
(FROM MBC)
REMOTE COOLING/
REMOTE HEATING
SETPOINT
1R
RED
BLK
11
14
(UPS V+)
(UPS INVERTER ENABLE)
K1
See Detail D
See Detail E
See Detail D
MICROBOARD
031-03630
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller18

Figure 4: OptiView control panel microboard (031-03630) details
LD27258
TO
I/O
BD.
J1
20
10
8
12
J19-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
HIGH PRESSURE CUTOUT SWITCH
MOTOR CONTROLLER FAULT
RESERVED (MBC #2 LEVITATED)
SAFETY STOP SWITCH
RESERVED (MBC #2 FAULT)
MBC/OIL PUMP VSD FAULT
MBC LEVITATED
SPARE
RESERVED (HPCO SWITCH #2)
REMOTE RUN/STOP SWITCH
CONTROL VOLTAGE
REMOTE COOLING SETPOINT
REMOTE CURRENT LIMIT SETPOINT
CHILLED LIQUID FLOW SWITCH
SYSTEM CYCLING SHUTDOWN
MULTI UNIT SEQUENCE CYCLING
SPARE
AUXILIARY SAFETY SHUTDOWN
CONDENSER LIQUID FLOW SWITCH
RESERVED (MOTOR CONTROLLER #2 FAULT)
+5V
GND
GND
GND
GND
+12V
+12V
MOTOR COOLING BOOSTER
SPARE
SPARE
SPARE
VENT LINE SOLENOID
PURGE REGEN DRAIN TANK SOLENOID
SPARE
OIL HEATER
MOTOR CONTROLLER STOP
MOTOR CONTROLLER START
COND/EVAP OIL RETURN SOLENOID VALVE
PURGE INLET SOLENOID, PURGE PUMP, PURGE PUMP SOLENOID, PURGE REGEN TANK VENT SOLENOID
PURGE COMPRESSOR RUN
PURGE REGEN TANK HEATER
RESERVED (MOTOR CONTROLLER #2 STOP)
RESERVED (MOTOR CONTROLLER #2 START)
VGD SHUTDOWN
CONDENSER LIQUID PUMP RUN
CYCLING SHUTDOWN
SAFETY SHUTDOWN
REMOTE MODE READY TO START
WARNING ALARM
CHILLED LIQUID PUMP RUN
303A
317
318
307A
GND
EVAP. PRESS. FEEDTHROUGH
COND. PRESS. FEEDTHROUGH
DC UNDERVOLTAGE INPUT
1
2
3
4
5
6
1
2
3
4
5
6
2
3
4
5
6
7
8
1
2
3
4
5
1
2
3
4
5
1
2
3
4
J3-
J13-
J2-
J15-
-12V
+12V
COM
COM
+5V
+5V
+24VF
+12VF
SHIELD
+
-
-12V
GND
+12V
GND
+12V
SHLD
GTX
GRX
DTR1
TXD1
RXD1
DSR1
GND
GND
J2
PRINTER
& BAS
3
2
+12V
EN SIG
1
J20-
PWM SIG
NOT USED
5
4
3
2
TB2
+
GND
SHLD
4
16
15
INPUT
GND
+12V
309A
1
311A
J10-
+24V
7
319
315A
6
1
7
+24V
J12-
COM3
EXP I/O
SHIELD
RED
BLK
+
-
J24-
J25-
RED
BLK
-
+12V
TB2
MBC
J29-
J30-
TB10
1
COM 5A
TO J9 ON
LTC I/O BD.
GND
-12VF
308A
316A
TO J2-9 ON POWER SUPPLY
TO J2-11 ON POWER SUPPLY
TO J2-12 ON POWER SUPPLY
TO J2-1 ON POWER SUPPLY
TO J2-13 ON POWER SUPPLY
TO J2-7 ON POWER SUPPLY
TO J2-3 ON POWER SUPPLY
J1-
POWER IN
TO P30-12
TO J32-7
TO J32-8
BLK
RED
WHT
14
3
13
6
7
17
3
1
2
BLK
WHT
RED
EP
EVAPORATOR
PRESSURE
TRANSDUCER
(0.5-4.5V)
19
9
18
INPUT
GND
+12V
GND
INPUT
+5V
+5V
INPUT
GND
15
11
3
1
2
BLK
WHT
RED
CP
CONDENSER
PRESSURE
TRANSDUCER
(0.5-4.5V)
11
22
21
11
2
1
J9-
+5V
INPUT
GND
+5V
INPUT
GND
12
2
1
RED
BLK
2
1
RED
BLK
2
1
2
1
RED
BLK
RT2
DISCHARGE TEMP.
THERMISTOR
RT6
DROP LEG
REFRIG. TEMP.
THERMISTOR
RT4
LEAVING COND.
LIQUID TEMP.
THERMISTOR
14
4
15
5
16
6
17
7
18
8
BLK
RED
1
2
BLK
RED
1
2
RT1
LEAVING CHILLED
LIQUID TEMP.
THERMISTOR
19
9
20
10
INPUT
+5V
+5V
INPUT
+5V
INPUT
+5V
INPUT
+5V
INPUT
INPUT
+5V
INPUT
+5V
3
13
RT7
EVAPORATOR
REFRIG.TEMP.
THERMISTOR
BLK
RED
1
2
INPUT
+5V
7
2
5
RED
BLK
6
4
9
1
REFRIGERANT
LEVEL
SENSOR
(LLS)
CONDENSER
RT5
ENTERING COND.
LIQUID TEMP.
THERMISTOR
RT9
ENTERING CHILLED
LIQUID TEMP.
THERMISTOR
GND LUG
(OPTION TO SC-EQ)
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
TX
RX
TX
RX
FIBER
TO VSD
GRY
BLU
FIBER
TO MBC
GRY
BLU
3
1
2
NOT USED
SPARE
SPARE
J13
MOTOR
CONTROLLER
035-26662-000
REV E, SHT. 3
See Detail A
See Detail B
See Detail C
Note: See details A, B and C of Figure 5 and details D and E of Figure 6.
Wiring notes
1. If flow switches are connected to J14, microboard jumpers JP10, JP11, and JP12 must be on pins
2 and 3.
2. For VGD communication, jumpers JP27 and JP29 must be installed on pins 1 and 2.
19Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller

OptiView control panel microboard (031-03630) details A, B,
and C
Figure 5: OptiView control panel microboard (031-03630) details A, B, and C
LD27259
035-26662-000
REV E, SHT. 3
20
10
8
12
4
16
15
INPUT
GND
+12V
BLK
RED
WHT
14
3
13
6
7
17
3
1
2
BLK
WHT
RED
19
9
18
INPUT
GND
+12V
GND
INPUT
+5V
+5V
INPUT
GND
15
11
3
1
2
BLK
WHT
RED
11
22
21
11
2
1
J9-
+5V
INPUT
GND
+5V
INPUT
GND
12
2
1
RED
BLK
2
1
RED
BLK
2
1
2
1
RED
BLK
14
4
15
5
16
6
17
7
18
8
BLK
RED
1
2
BLK
RED
1
2
19
9
20
10
INPUT
+5V
+5V
INPUT
+5V
INPUT
+5V
INPUT
+5V
INPUT
INPUT
+5V
INPUT
+5V
3
13
BLK
RED
1
2
INPUT
+5V
7
2
5
RED
BLK
6
4
9
1
3
1
2
303A
317
318
307A
1
2
3
4
5
6
1
2
3
4
5
6
2
3
4
5
6
7
8
1
2
3
4
5
1
2
3
4
5
1
2
3
4
J3-
J13-
J2-
J15-
-12V
+12V
COM
COM
+5V
+5V
+24VF
+12VF
SHIELD
+
-
-12V
GND
+12V
GND
+12V
SHLD
GTX
GRX
DTR1
TXD1
RXD1
DSR1
GND
GND
3
2
+12V
EN SIG
1
PWM SIG
5
4
3
2
TB2
+
GND
SHLD
309A
1
311A
J10-
+24V
7
319
315A
6
1
7
+24V
SHIELD
RED
BLK
+
-
J24-
J25-
RED
BLK
-
+12V
TB2
MBC
J29-
J30-
TB10
1
TO J9 ON
LTC I/O BD.
GND
-12VF
308A
316A
TO P30-12
TO J32-7
TO J32-8
GND LUG
TX
RX
TX
RX
GRY
BLU
GRY
BLU
SPARE
Detail A
High Pressure Cutout Switch
Motor Controller Fault
Reserved (MBC#2 Levitated)
Safety Stop Switch
Reserved (MBC#2 Fault)
MBC/Oil Pump VSD Fault
MBC Levitated
Spare
Reserved (HPCO Switch# 2)
Remote Run/Stop Switch
Control Voltage
Remote Cooling Setpoint
Remote Current Limit Setpoint
Chilled Liquid Flow Switch
System Cycling Shutdown
Multi Unit Sequence Cycling
Aux. Safety Shutdown
Cond. Liquid Flow Switch
Reserved (Motor Controller #2 Fault)
Spare
+5V
GND
GND
GND
GND
+12V
+12V
Motor Cooling Booster
Spare
Spare
Spare
Vent Line Solenoid
Purge Regen Drain Tank Solenoid
Spare
Purge Compressor Run
Motor Controller Stop
Motor Controller Start
Cond./Evap Oil Return Solenoid Valve
Purge Inlet Solenoid, Purge Pump,
Purge Pump Solenoid,
Purge Regen Tank Vent Solenoid
Oil Heater
Purge Regen Tank Heater
Reserved (Motor Controller #2 STOP)
Reserved (Motor Controller #2 START)
VGD Shutdown
Condenser Liquid Pump Run
Cycling Shutdown
Safety Shutdown
Remote Mode Ready to Start
Warning Alarm
Chilled Liquid Pump Run
To I/O Board J1
J19
To J2-9
To J2-11
To J2-13
To J2-12
To J2-7
To J2-1
To J2-3
J1-
Power IN
Not Used
Not Used
Fiber to MBC
Fiber to VSD
Option
to SC-EQ
J12-
COM3
EXP I/O
J13
Motor
Controller
J2 Printer
& BAS
J20-
Detail B
OnPower Supply
Detail C
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Condenser
Refrigerant
Level Sensor
(LLS)
EP
Evaporator
Pressure
Transducer
(0.5-4.5V)
CP
Condenser
Pressure
Transducer
(0.5-4.5V)
RT7
Evaporator
Refrig. Temp.
Thermistor
RT2
Discharge Temp.
Thermistor
RT6
Drop Leg
Refrig. Temp.
Thermistor
RT5
Entering Cond.
Liquid Temp.
Thermistor
RT4
Leaving Cond.
Liquid Temp.
Thermistor
RT9
Entering Chilled
Liquid Temp.
Thermistor
RT1
Leaving Chilled
Liquid Temp.
Thermistor
COM 5A
SPARE
DC Undervolt
Input
Cond. Press Feed Through
Evap. Press Feed Through
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller20