Sakura FCA DUEL Series User manual

Ref, S-(FR) 266 / 11 / 19
Models: FCA 201-601
AIR-COOLED MODULAR CHILLER

Content
Page 1
Product Nomenclature ....................................................................... 2
Features .......................................................................................... 3
Engineering Specifications ................................................................. 4
General Data ................................................................................. 4
Operating Range .......................................................................... ....5
System Schematic Diagram ............................................................. ...6
Controller, Features and Algorithm ................................................... ..7
Sound Data ................................................................................... 15
Sound Pressure Level ................................................................... 15
Dimensions .................................................................................... 16
Wiring Diagrams ............................................................................. 18
Installation .................................................................................... 23
Servicing and Maintenance .............................................................. 27
Troubleshooting ............................................................................. 29

Product Nomenclature
Page 2
1
No. of Module
Air-Cooled Modular Chiller
3
C
FCA
201
3
R410A
C
Cooling
20
Unit Size
FCA
Air-Cooled Modular Chiller

Features
Page 3
Simple Installation
Compact and small footprint design of modular chillers
minimizes the space needed for installation. The modular
design reduces the cost of transportation and allows
expansion of capacity when the needs arise in future,
thus, reduce the initial investment.
High Performance
Condenser
FCA's condenser is made of seamless inner groove
copper tube which mechanically expanded and bonded to
hydrophilic aluminum fins that offers high heat transfer
properties.
Safety Protection
The modular chillers have built in protections for all sub-
system, i.e. refrigerant system, electrical system and
water system. Various overload protection devices, phase
protector,
temperature sensor, pressure switch, flow
switch, etc., have been installed to protect the system if
it experiences any failure of components or abnormal
external factors. With these safety measures, the system
is able to deliver high performance and at the same time
ensure safe operation at all time.
Easy Maintenance
Wired LCD controller equipped with various operating
mode, timer setting, temperatures display and self-
diagnosis by error code. Through the precise and
intelligent control algorithm, the load will be distributed
evenly to all the modular chillers, thus greatly reduce the
commissioning and troubleshooting time and prolong the
service life of the compressors.
Flexibility &
Energy Saving
Various combinations of modular chillers provide great
flexibility of matching the exact load demand of
applications. Up to 8 units of modular chillers can be
combined to provide the necessary capacity and allow
future expansion through easy add-on features.
Besides, the modular system is
able to adhere to different load profile precisely and
deliver highest performance at all load condition.
Zero ODP
Air cooled modular chillers with R410A refrigerant and
microchannel condenser strike a perfect match in
delivering high efficient products. Furthermore, the
equipment are manufactured in as ISO14000 certified
facility which complies to international standard for
environmental management.

Engineering Specifications
Page 4
General Data- FCA –(R410A) –50Hz
Model
FCA
201
301
401
501
601
Nominal Cooling Capacity
kW
66.0
100.0
132.0
166.0
198.0
RT
18.8
28.4
37.5
47.2
56.3
Nominal Input Power
kW
22.1
36.4
46.6
59.8
73.6
Nominal Running Current
A
40.3 62.2 80.7 104.3 125.8
Power Source
V/Ph/Hz
380-415 /3/50
Operation Control
LCD Wired Micro-Computer
Compressor
Type
Hermetic Scroll
Quantity
2
2
2
2
2
Stage of Capacity Control
0-50-
100%
0-50-
100%
0-50-
100%
0-50-
100%
0-50-
100%
Refrigerant
Type
R410A
Number of Refrigerant
Circuit
2
2
2
2
2
Expansion Device
TXV
Charging Mass
kg
7 x 2
9 x 2
13 x 2
14x 2
16 x 2
Condenser
Type
Fin and Tube Heat Exchanger
Quantity
2
2
4
6
6
Input Power(Each
Fan)
kW
0.9
0.9
0.9
0.9
0.9
Rotational Speed
RPM
920
920
920
920
920
Diameter
mm
710
710
710
710
710
Evaporator
Type
Direct Expansion Shell and Tube Evaporator
Water Flow Rate
m³/h
11.4
17.2
22.7
28.6
34.1
gpm
50.0
75.8
100.1
125.9
150.1
Water Pressure
Drop
kPa
19
25
33
39
46
ft.wg
6.4
8.4
11.0
13.0
15.4
Water Pipe
DN
DN65
DN65
DN80
DN80
DN100
Dimension
Length
mm
2206
2500
3180
Width
mm
1073
1750
1750
Height
mm
2226
2136
2136
Unit Weight
kg
661
920
1290
1550
1580
Operation Weight
kg
731
1000
1380
1650
1700
Note:
1. Products are tested in accordance to GB/T18430-2007.
2. Cooling capacity is based on 12°C entering and 7°C leaving water temperature; 35°C ambient
temperature.
3. Power supply is 380-415V/50Hz with allowable voltage fluctuation of ±10%
4. The manufacturer reserves the rights to make changes to the above specifications without prior
notice.

Page 5
Operating Range Cooling

System Schematic Diagram
Page 6
Model: FCA201/301/401/501/601

Page 7
1. Introduction
1.1 Specification
Model: GSWP01A wired controller (to be used with GSWM01A printed circuit
board).
1.2 Product Specification
The device has a dual color (red and green) LED, a LCD screenˈ12V DC
power supply, and an input/output connecting port.
1.3 Main Features
a) Blue back lid LCD display.
b) Stand alone or modular control capable.
c) Real time clock.
d) ON / OFF timer setting (Monday – Sunday)
e) In / out water temperature display.
f) Multiple operating parameters setting.
g) Manual defrost capable.
h) Key-lock function.
Controller Features and Algorithm
Error Code
Display Area
Unit Module
Number Display
Area
Clock Display
Area
Operation
Mode Display
Area
Temperature
Display Area

Page 8
1.4 Description of Controller Buttons
Button Description Button Description
ON TIMER Unit ON timer setting MODE Mode Setting
OFF TIMER Unit OFF timer setting TIMER Timer setting
SET Data setting CLEAR Delete / exit
CLOCK Time setting SET TEMP Temperature setting
DAY Day setting (Mon – Sun) ENTER Enter data/info
HOUR Hour setting ON/OFF Unit on/off
MINUTE Minute setting ▲/▼+ / - value
1.5 LCD Indicators
Indicator Indicator on Indicator off Indicator Indicator on Indicator off
ON System on Comp.1 ON Comp. 1 oil
preheat
OFF System off Comp.2 ON Comp. 2 oil
preheat
Cooling Mode UNIT Unit (module
number)
2. Functional Description
2.1 Default Setting
Whenever the unit is turned on, the default setting as follow:
Mode: Cooling
2.2 Unit On/ Off
Unit may be turned on and off by:
(1) Timer setting
(2) “ON/OFF” button (manual)
(Note: LED colour display RED – unit OFF, GREEN – unit ON)
2.3 Day & Time Setting
Press “CLOCK” button once, the LCD will show [SET CLOCK] blinking, day and
time may be set by pressing buttons “DAY”, “HOUR”, “MINUTE”. If no input within
5 seconds, system will automatically exit the day and time setting mode.

Page 9
2.4 ON / OFF Timer Setting
The system has ON TIME and OFF TIME setting (Monday – Sunday).
Press and hold 㧎ON TIMER㧎(or “OFF TIMER”) button for 5 seconds, the buzzer
will beep once (long beep) and system will enter into ON TIMER (or OFF TIMER)
setting, the clock display will show “--:--“, and the LCD will show [SET TIME] and
[ON] (or [OFF]) blinking, use “DAY”, “HOUR” and “MINUTE” buttons to set the
unit ON TIME (or OFF TIME), followed by press and hold 㧎ON TIMER㧎(or “OFF
TIMER”) button to confirm setting, or press “CLEAR” button to cancel and exit
unit ON/OFF TIME setting.
Whenever the [ON] and/or [OFF] indicator(s) shown on LCD, the ON TIMER
and/or OFF TIMER is/are enabled. To cancel the ON/OFF TIMER setting, press and
hold “CLEAR” button until the [ON] and/or [OFF] indicator(s) disappeared on LCD.
2.5 Key-lock Function
Pressing “ON TIMER” and “ENTER” simultaneously will enable/disable key-lock. A
symbol “ ” will be shown on the LCD, indicates that all buttons being locked, only
“ON/OFF” button is operational.
2.6 Error Code Enquiry for Each Module
To check each Module error code, press and hold 㧎▲㧎button for 5 seconds, the
error code display area will show the error code and the buzzer will beep,
meanwhile the unit module number display area will show which module is having
that error code shown. Example: E01 02, meaning module #2 has error code
E01. To check the error code for other modules, press 㧎▲㧎and㧎▼㧎buttons to
select different module. To exit, press “CLEAR” button.
(Note: Refer error code description section for each error code description)
2.7 Temperature Enquiry for Each Module
To check for each module different ambient/water temperature, press and hold 㧎
▼㧎button for 5 seconds, the error code display area will show the module
number and the buzzer will beep, meanwhile the unit module number display will
show the respective modules different ambient/water temperature sub menu (6
sub-menu as listed in table). Example: 02 01, meaning module #2, sub-menu #1
(ambient temperature) is currently shown in the temperature display on LCD. To
select different sub-menu (1 to 6), press 㧎▲㧎and㧎▼㧎buttons. To exit, press
“CLEAR” button.
Sub Menu # Temperature Display
1 Ambient temperature
2N/A
3N/A
4 Chilled Water Return Temperature (TH4)
5Chilled Water Supply Temperature (TH5)
6N/A
7 Overall Chilled Water Return Temperature (TH7)
8 Overall Chilled Water Supply Temperature (TH8)

Page 10
2.8 Operational Data Inquiry
Press and hold “SET” button for 5 seconds, this will enable operational data
inquiry, unit module number display area will show the 9 subs menu as listed in
the following table, while the temperature display area will show the
correspondent sub menu’s operational data. Press” SET” button to select different
sub menu (1 to 9). To exit, press “CLEAR” button.
Sub
menu# Operational Data Unit Acceptable Operational Range and Default Value
1 Chilled Water Temperature
Setting Ԩ
Chilled Water Setting:
Supply – 5 to 30, default: 7 Ԩ
Return – 7 to 30, default: 12 Ԩ
2 N/A N/A N/A
3 Compressor Minimum Running
Time Minutes 1 to 10, default: 5 minutes
4 Compressor Minimum Idle Time Minutes 1 to 10, default: 4 minutes
5 Compressor Load Time Interval Minutes 2 to 10, default: 3 minutes
6 Compressor Unload Time
Interval Minutes 1 to 5, default: 1 minutes
7 N/A N/A N/A
8 N/A N/A N/A
9 N/A N/A N/A
10 Temperature Differential
Setting Ԩ1-5 Ԩ, default: 2 Ԩ

Page 11
2.9 Operational Data Setting
Press and hold “ENTER” button for 5 seconds, this will enable operational data
setting, [PSW] and [UNIT] display will show “----”, use 㧎▲㧎and㧎▼㧎buttons to
select number 1 to 9, as to enter the 4 digits password (password: 1688), then
press “ENTER” button. The unit module number display area will show the 9 sub
menu as listed in the following table, while the temperature display area will show
the correspondent sub menu’s operational data. To change the operational value
of each sub menu, follow these instructions:
(a) Press “SET” button to select different sub menu (1 to 9).
(b) Press 㧎▲㧎and㧎▼㧎buttons to change the operational value setting.
(c) Press “ENTER” button to save the operational value and exit setting, or press
“CLEAR” button to cancel and exit setting.
Sub
menu# Operational Data Unit Acceptable Operational Range and Default Value
1 Chilled Water Temperature
Setting Ԩ
Chilled Water Setting:
Supply – 5 to 30
Return – 7 to 30
2 N/A N/A N/A
3 Compressor Minimum Running
Time Minutes 1 to 10
4 Compressor Minimum Idle Time Minutes 1 to 10
5 Compressor Load Time Interval Minutes 2 to 10
6 Compressor Unload Time
Interval Minutes 1 to 5
7 N/A N/A N/A
8 N/A N/A N/A
9 N/A N/A N/A
10 Temperature Differential Setting Ԩ1-5 Ԩ, default: 2 Ԩ

Page 12
2.10 Error Code Description
Error Code Description
E01 N/A
E02 Wired controller offline
E03 Chilled water flow switch disconnected
E04 N/A
E05 N/A
E06 N/A
E07 TH4 - chilled water return sensor open or short circuit
E08 TH5 - chilled water supply sensor open or short circuit
E09 N/A
E0A N/A
E0B N/A
E0C Modular unit(s) offline
E0D Compressor 1 high pressure
EOE Compressor 2 high pressure
E0F Compressor 1 low pressure
E10 Compressor 2 low pressure
E11 System 1 overload protect
E12 System 2 overload protect
E13 N/A
E14 N/A
E15 Phase sequence error
E16 Anti-freeze protection
E17 Compressor 1 overload protect
E18 Compressor 2 overload protect
E19 N/A
E1A N/A
E1B N/A
E1C TH7- overall chilled water return sensor open or short circuit
E1D TH8- overall chilled water supply sensor open or short circuit

Page 13
3.Modbus Protocol Specification- Optional
For WP01V_BMS V1.0
3.1Communication protocol
The way of start communication：After the order is sent from master to
slaver(WP01V_BMS), the communication is started。
3.2The structure of Communication data
（a）Interface Communication style：RS485-2W
mode：RTU（Remote Terminal Unit）
Synchronization mode
Connector type：Blue Color Connector Mark A B
（b）The bit rate：9600[bps]
（c）The format of each datum:
Start bit: 1[bit]
Data bit: 8[bit]
Stop bit: 1[bit]
（d）Coil, input mode, remain record, input record definition
（e）Every one idu WP01V_BMS need a modbus unique ID, range from 1-16; Id 0
is use for broadcast Id
WP01V_BMS SW1-4 Set Modbus Slaver ID
SW-1
SW-2
SW-3
SW-4
Modbus ID
0
0
0
0
1
1
0
0
0
2
0
1
0
0
3
1
1
0
0
4
0
0
1
0
5
1
0
1
0
6
0
1
1
0
7
1
1
1
0
8
0
0
0
1
9
1
0
0
1
10
0
1
0
1
11
1
1
0
1
12
0
0
1
1
13
1
0
1
1
14
0
1
1
1
15
1
1
1
1
16
（f）Modbus Table Description 03 Function

Page 14
Address Description
Address 0
On/Off R/W
0=Off 1=On
Address 1
Error Code R
Bit7-0: Error Fault Code
Bit15-8: Which one error 0: Main Unit 1: module 1 2: module 2 .....
Address 2
Status Bit & Output Bit R
Bit15: 0.Water Cool Type 1.Fan Cool Type
Bit14: 0.Control Outlet Water Temperature
1.Control Inlet Water Temperature
Bit13: 0.Run Cool Mode 1.Run Heat Mode
Bit6: 0.FAN No2 Stop 1.FAN No2 Running
Bit5: 0.FAN No1 Stop 1.FAN No1 Running
Bit4: 0.Cooling Tower Fan Stop 1.Cooling Tower Fan Running
Bit3: 0.Cooling Pump Stop 1.Cooling Pump Running
Bit2: 0.Freeze Pump Stop 1.Freeze Pump Running
Bit1: 0.Compressor2 Stop 1.Compressor2 Running
Bit0: 0.Compressor1 Stop 1.Compressor1 Running
Address 3
Reserve R
Address 4
Reserve R
Address 5
Chilled Set Temp R
E.g. 235=23.5C 190=19.0C
Address 6
Ambient Temp R
E.g. 235=23.5C 190=19.0C
Address 7
Chilled Water Inlet Temp R
E.g. 235=23.5C 190=19.0C
Address 8
Chilled Water Outlet Temp R
E.g. 235=23.5C 190=19.0C
Address 9 Reserve R

Sound Data
Page 15
Sound Pressure Test Setup
Sound Pressure Level
Model
1/1 Octave Sound Pressure Level (dB, ref 20μPa)
Overall
(dBA)
Noise
Criteria
125Hz
250 Hz
500 Hz
1kHz
2khz
4kHz
8kHz
FCA201
66
64
65
62
58
55
49
67
62
FCA301
75
70
66
66
61
56
53
70
65
FCA401
73
70
67
65
61
57
53
70
63
FCAC501
75
72
68
66
63
58
55
71
65
FCA601
78
75
73
70
67
61
57
75
68
Sound Power Level
Model
1/1 Octave Sound Pressure Level (dB, ref 1pW)
Overall (dBA)
125Hz
250 Hz
500 Hz
1kHz
2khz
4kHz
8kHz
FCA201
80
78
79
76
72
69
63
81
FCA301
89
84
80
80
75
70
67
84
FCA401
90
85
81
81
76
71
68
85
FCA501
92
87
83
83
78
73
70
88
FCA601
95
89
85
85
80
75
73
90

Dimensions
Page 16
Model:FCA201/301
Model:FCA401

Page 17
Model:FCA501/601

Wiring Diagrams
Model: FCA201
Page 18
X1-GND X1-GND X1-GND X1-GND X1-GND X1-GND X1-GND X1-GND
X1-GND
X1-GND X1-GND
X1-DI7
Sys.1 Low Pressure Protect
Sys.1 High Pressure Protect
Sys.2 Low Pressure Protect
Sys.2 High Pressure Protect
Chilled Water Flow Switch
External Interlock / Remote OnOff
Sys.1 Compressor Overload Protect Sys.2 Compressor Overload Protect
P
P
P
P
SP1(L)
SP1(H)
SP2(L)
SP2(H)
SF
FR1
FR2
KM3, Fan 1
KM4,Fan 2
KM2, Comp. 2
Wired Wallpad Controller
L1 L2 L3 N
CM1
FR1 FR2
KM1 KM2KM3 KM4
U1 V1 W1
RED
WHITE
BLACK
BLUE
RED
WHITE
BLACK
RED
BLACK
BLUE
RED
3~ 3~3~ 3~
CM2FM1 FM2
X1
LEGEND
KM-AC Contactor
Q-Circuit Breaker,MCB FR- Thermal Relay CM-Compressor FM-Fan Motor DT-Discharge Thermostat CH-Crankcase Heater SP(L)-Low Pressure Switch SP(H)-High Pressure Switch SF-Flow Switch ST-Thermal Switch X1-Terminal
FR RANGE SETTING (A)
*Remark : - - - - - Field Installation.
3N~ / 380-415V / 50Hz PE
SW1 SW2 SW3
DIP SETTING
1
OFF
ON
SW2
5 6 7 8432143214321
SW3SW1
1
21
3
1
41 1
CX1
CN6
C6
C1
E3 U1 E2
D2
EXV3
51
EXV2
CN9
4 CN10 1
CN8
COM1 COM2
CN5
CN7
CN4
EXV1
5
1
12 12 12 12 12 12 1 22 1
FUSE2 T8A 250VAC
FUSE1 T3.15A 250VAC
ZR1
E7
+
U4
EXV4
1
EMI
E1
E5
CY1 12W24S_EE19
1
2
3
4
5
6
7
E6
+
D5 L4
E4 D4
E8
+
BR1
PTC
R8
CN11 1 3
DO12 DO11 DO10
DO9
12V A B C D
L1 DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8B DO8A
A B G V
12V A B C D
HAND SET
A1 B1 GND 12V A2 B2
GSWM01M V4.0
12V A B C D12V A B C D
+ +
+
+ +
+
+12V GND
+
2017/06
L1
L2
L3
N
DI1 DI2 DI3
DI4 DI5 DI6 DI7
GND
DI8
DI9
DI10 DI11
DI12 DI13
DI14 DI15 DI16
GND
N
L1
L2
L3
TH1 TH2 TH3 TH4 TH5 TH6 TH7 TH8 TH9TH10 TH11 HPS
LPS
DO13A
DO13B DO14A DO14B
DO15A DO15B DO16A DO16B
Ambient Temp. Sensor
Chilled Water Return Temp. Sensor
Chilled Water Supply Temp. Sensor
Overall chilled Water in (Master Unit Only)
Overall chilled Water out (Master Unit Only)
KM, Chilled Water Pump
L N
Operation Indicator
Fault Indicator
Power Supply
Indicator
Q1
L1 L2 L3
Q2
L1 L2 L3
L1 L2 L3 L1 L2 L3
CH (OPTIONAL)
N
CH (OPTIONAL)
N
WHITE
BLACK
P DT1 P DT2
BLACK
BLUE
RED
X1-GND
U1 V1 W1
Voltage(V) Amp(A)
400 / 380
24
FR1
FR2 400 / 380
FCA201
24
1
OFF
2
OFF
3
OFF
4
OFF
1
OFF
2
OFF
3
OFF
4
OFF
1 2 3
ON OFF ON OFF
control supply
chilled water
temp. (Default)
control
return chilled
water temp.
4
OFF
5
OFF
6
OFF
7
ON
8
OFF
GND
DI7
GND
GND
GND GND
GND GND
GND GND
GND GND
GND GND
DO
13A
SP1(L)
SP1(H)
DT1
SP2(L)
SP2(H)
DT2
External Interlock /
Remote OnOff
SF
DI5 DI5
DI7 DI7
DI1 DI2 DI3 DI4 DO
13B
DI1 DI2 DI3 DI4
GND
LP1
HP1
LP2
HP2
GND DO
13A
DO
13B
DO13B
DO13A
L
N
DI5
Chilled Water
Flow Switch
KM1, Comp 1

Model: FCA301
Page 19
X1-GND X1-GND X1-GND X1-GND X1-GND X1-GND X1-GND X1-GND
X1-GND
X1-GND X1-GND
X1-DI7
Sys.1 Low Pressure Protect
Sys.1 High Pressure Protect
Sys.2 Low Pressure Protect
Sys.2 High Pressure Protect
Chilled Water Flow Switch
External Interlock / Remote OnOff
P
P
P
P
SP1(L)
SP1(H)
SP2(L)
SP2(H)
SF
FR1
FR2
Wired Wallpad Controller
L1 L2 L3 N
CM1
FR1 FR2
KM1 KM2KM3 KM4
U1 V1 W1
RED
WHITE
BLACK
BLUE
RED
WHITE
BLACK
RED
BLACK
BLUE
RED
3~ 3~3~ 3~
CM2FM1 FM2
X1
LEGEND
KM-AC Contactor
Q-Circuit Breaker,MCB
FR-Thermal Relay
CM-Compressor FM-Fan Motor DT-Discharge Thermostat CH-Crankcase Heater SP(L)-Low Pressure Switch SP(H)-High Pressure Switch SF-Flow Switch ST-Thermal Switch X1-Terminal
FR RANGE SETTING (A)
*Remark : - - - - - Field Installation.
3N~ / 380-415V / 50Hz PE
SW1 SW2 SW3
DIP SETTING
1
OFF
ON
SW2 5 6 7 8432143214321 SW3SW1
1
21
3
141 1
CX1
CN6
C6
C1
E3 U1 E2
D2
EXV3
51
EXV2
CN9
4 CN10 1
CN8
COM1 COM2
CN5
CN7
CN4
EXV1
5
1
12 12 12 12 12 12 1 22 1
FUSE2 T8A 250VAC
FUSE1 T3.15A 250VAC
ZR1
E7
+
U4
EXV4
1
EMI
E1
E5
CY1 12W24S_EE19
1
2
3
45
6
7
E6
+
D5 L4
E4 D4
E8
+
BR1
PTC
R8
CN11 1 3
DO12 DO11 DO10
DO9
12V A B C D
L1 DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8B DO8A
A B G V
12V A B C D
HAND SET
A1 B1 GND 12V A2 B2
GSWM01M V4.0
12V A B C D12V A B C D
+ +
+
+ + +
+12V GND
+
2017/06
L1
L2
L3
N
DI1 DI2 DI3
DI4 DI5 DI6 DI7
GND
DI8
DI9
DI10 DI11
DI12 DI13
DI14 DI15 DI16
GND
N
L1
L2
L3
TH1 TH2 TH3 TH4 TH5 TH6 TH7 TH8 TH9TH10 TH11 HPS
LPS
DO13A
DO13B DO14A DO14B
DO15A DO15B DO16A DO16B
Ambient Temp. Sensor
Chilled Water Return Temp. Sensor
Chilled Water Supply Temp. Sensor
Overall chilled Water in (Master Unit Only)
Overall chilled Water out (Master Unit Only)
KM, Chilled Water Pump
L N
Q1
L1 L2 L3
Q2
L1 L2 L3
L1 L2 L3 L1 L2 L3
CH (OPTIONAL)
N
CH (OPTIONAL)
N
WHITE
BLACK
P DT1 P DT2
BLACK
BLUE
RED
X1-GND
U1 V1 W1
Voltage(V) Amp(A)
400 / 380 24
FR1
FR2 400 / 380
FCA301 24
1
OFF 2
OFF 3
OFF 4
OFF
1
OFF 2
OFF 3
OFF 4
OFF
1 2 3
ON OFF ON OFF
control supply
chilled water
temp. (Default)
control
return chilled
water temp.
4
OFF 5
OFF 6
OFF 7
ON 8
OFF
Sys.1 Compressor Overload Protect Sys.2 Compressor Overload Protect
Compressor 1 Overload Protect Compressor 2 Overload Protect
GND
DI7
GND
GND
GND GND
GND GND
GND GND
GND GND
GND GND
DO
13A
SP1(L)
SP1(H)
DT1
SP2(L)
SP2(H)
DT2
External Interlock /
Remote OnOff
SF
DI5 DI5
DI7 DI7
DI1 DI2 DI3 DI4 DO
13B
DI1 DI2 DI3 DI4
GND
LP1
HP1
LP2
HP2
GND DO
13A DO
13B
DO13B
DO13A
LN
DI5
DI10
DI10
DI11
DI11
DI11
DI10
Chilled Water
Flow Switch
KM3, Fan 1
KM4,Fan 2
KM2, Comp. 2
Operation Indicator
Fault Indicator
Power Supply Indicator
KM1, Comp 1