Chigo CSQ4-300R User manual

CHIGO CAC FCU
i
Introduction
Part 1 : General Information
Part 2: Indoor Units
Part 3: Installation
Part 4: Control

CHIGO CAC FCU
Introduction
Fan coil unit is a kind of compound device which assemble fan and surface-type coil heating-exchanger
together. Fan coil with fresh air supply system is a main type of center air-conditioner system, so it is an
important component of AC devices. Fan coil has horizontal type, vertical type, etc. A cooling (heating)
supply system usually consists of fan coil terminals and chilled water system (heated water system).
Chigo®commercial AC fan coil is designed and manufactured on the base of advanced technology, and
utilize qualified galvanized iron as material. Due to its supper-thin design, it has such advantages: beautiful
outlook, space saving, easy installation, etc. And the most obvious advantage is that it can decrease the
outlet air Temp-difference as low as possible to make room more comfortable, as well as don’t decrease
cooling capacity output. For the large air flow volume design, it can increase room ventilation frequency,
supply more flesh air, and balance room temperature distribution. Benefiting from adoption of advanced
material and technology, it can effectively decrease the running noise and keep running smoothly. With the
advantages above, it can be widely applied in market, hospital, office building, hotel airport, etc.

CHIGO CAC FCU
Part 1: General Information
1. Model Names of Coil
2. External Appearance
3. Nomenclature
4. Features

CHIGO CAC FCU
1. Model Names of Fan Coil
No
Type
Model
Power source
1
Compact Ceiling Cassette Type
CSQ4-300R
220-240V~,1Ph, 50Hz
2
CSQ4-350R
3
CSQ4-470R
4
Ceiling Cassette Type
CSQ-600R
5
CSQ-760R
6
CSQ-880R
7
CSQ-1000R
2. External Appearance
Ceiling Cassette Type
Compact Ceiling Cassette Type

CHIGO CAC FCU
3. Nomenclature
C
P: Static Pressure
12: Static pressure value
R: Remote
W: Wired
-
ST600 RP12
Q: 4-way cassette
Q4: 4-way cassette(compact type)
T: Low ESP Duct
Chigo HVAC
Product series
S: Fan coil unit
Air flow: CFM
4. Features
Chilled water/Hot water (2 pipes)
Low height for easy installation
Low noise fan direct driven by single phase, 3 speed permanent split capacitor motor.
Copper tube/aluminum fin coils
Unit constructed by electrostatic galvanized sheet, providing maximum protection against corrosion

CHIGO CAC FCU
5
Part 2 Indoor Units
1. Ceiling Cassette Type
2. Compact Ceiling Cassette Type

CHIGO CAC FCU
Ceiling Cassette Type
1. Features
2. Specification
3. Dimensions
4. Service Spaces
5. Wiring Diagram
6. Sound Levels
7. Exploded View
8. Troubleshooting

CHIGO CAC FCU
1. Features
1) Ultra thin machine body to easy installation and maintenance. 1000~1300m3/h: 230mm;
1500~1700m3/h: 285mm.
2) Drainage pump can take up the condenser water to 1200mm.
3) Stylish design is harmonious with any interior decoration and creates and elegant environment.
3) A full series of controller give you the most suitable solution according to the different requirement from
different customers.
5) 3-speed motor provides more choices

CHIGO CAC FCU
2. Specification
Model NO.
CSQ-600R
CSQ-760R
CSQ-880R
CSQ-1000R
air flow (Hi-speed)
CFM
600
760
880
1000
m3/h
1000
1300
1500
1700
Cooling Capacity (Hi-speed)
W
5300
7200
8500
1000
Btu
18080
24560
29000
34120
Heating Capacity (Hi-speed)
W
8000
10800
12800
15000
Btu
27290
36850
43670
51180
Noise
dB(A)
43-48
44-48
45-52
45-53
Water flow
m3/h
1.1
1.24
1.46
1.55
Water pressure drop
kPa
36
36
38
40
Indoor coil
Number Of Rows
2
2
2
2
Tube Pitch(A)x Row Pitch
mm
21×13.37
21×12.7
21×12.7
21×12.7
Fin spacing
mm
1.45
Fin type
Hydrophilic aluminum
Tube Outside Dia.And type
mm
φ7,Inner grooved tube
Coil Dimension (L×H×W)
mm
2000×168×32
2000×168×32
2000×252×32
2000×252×32
Fan motor
type
Low noise 3-speed fan motor
Number
1
1
1
1
Input
W
140
150
160
180
Capacitor
μF
3
3
4
4
Indoor unit
Dimension (W×H×D)
mm
840×230×840
840×230×840
840×285×840
840×285×840
Packing (W×H×D)
mm
920×265×920
920×265×920
920×310×920
920×310×920
Net/Gross weight
kg
23/28
23/28
26/31.5
28/33.5
plane
Dimension (W×H×D)
mm
950×50×950
950×50×950
950×50×950
950×50×950
Packing (W×H×D)
mm
1030×105×1030
1030×105×1030
1030×105×1030
1030×105×1030
Net/Gross weight
kg
5.4/8
5.4/8
5.4/8
5.4/8
Control Mode
wired controller(optional),remote controller(standard)
Pipe
water-inlet pipe
mm
DN20
DN20
DN20
DN20
water-return pipe
mm
DN20
DN20
DN20
DN20
Condensation water-outlet
pipe
mm
DN25
DN25
DN25
DN25
Remark: 1. All performance data above is based upon 0Pa ambient static pressure.
2. Cooling capacity test condition: air inlet Temp. : 27DB℃/19WB℃, water inlet Temp. 7℃, water Temp. difference
5℃.
3. Heating capacity test condition: Air inlet Temp. 21DB℃, water inlet Temp. 60 DB℃, water Temp. difference
5℃.

CHIGO CAC FCU
3. Dimensions
Unit: mm
Model
Dimensions(H)
A
B
C
D
E
CSQ-600R CSQ760R
CSQ-880R CSQ-1000R
950
890
840
680
780

CHIGO CAC FCU
4. Service Spaces
Installation dimension
Model
Dimensions(H) (mm)
CSQ-600R CSQ-760R
230
CSQ-880R CSQ-1000R
285

CHIGO CAC FCU
5. Wiring Diagram
CSQ-600R, CSQ-760R，CSQ-880R, CSQ-1000R

CHIGO CAC FCU
6. Sound Levels
Model
CSQ-600R
CSQ-760R
CSQ-880R
CSQ-1000R
Noise
dB(A)
43-48
44-48
45-52
45-53
FOUR-WAY CASSETTE TYPE
Microphone
1.0m

CHIGO CAC FCU
7. Exploded View
CSQ-600R, CSQ-760R，CSQ-880R, CSQ-1000R

CHIGO CAC FCU
No.
Part Name
Quantity
No.
Part Name
Quantity
1
E-parts box cover
1
8.3.2
Evaporator
1
2
Electrical control components for
indoor unit
1
8.3.3
Water inlet pipe welding assy
1
2.1
transformer
1
8.3.4
Drain pipe welding assy
1
2.2
Fan motor capacitor
1
8.4
Main fixing board
1
2.3
Terminal
1
9
Upper foam components
1
2.4
Terminal
1
10
Pre-assembling assy for water pump
1
2.5
E-parts board for indoor unit
1
10.1
water pump support
1
2.6
Temperature sensor
1
10.2
Water pump
1
2.7
Temperature sensor
1
10.3
Liquid-level sensor
1
2.8
Welded chasis for E-parts box
1
10.4
Underlay for water pump support
3
3
Wind inlet guide assy
1
11
Hanger
4
3.1
Wind inlet guide
1
12
Rear brattice
1
4
Water pan components
1
13
Chassis assy
1
4.1
Foam pendant
2
14
Discharge pipe joint
1
5
Centrifugal fan
1
15
Side maintenance board for water
pump
1
6
Fan motor for indoor
unit(YDK-55T-6-1)
1
16
Front brattice
1
7
Auxiliary fixing board for
evaporator
2
17
Lower pipe clamp
1
8
Evaporator components
1
18
Lower pipe clamp(φ35)
1
8.1
Insulating pipe
2
19
Upper pipe clamp
1
8.2
Evaporator attached cotton
1
20
Upper pipe clamp(φ35)
1
8.3
Evaporator welding assy
1
21
Valve panel
1
8.3.1
Instalation tube for probe
1

CHIGO CAC FCU
8. Troubleshooting
Problem Analysis
If the air conditioner is out of work, read the following before contacting the maintenance
department and it will save you time and efforts.
Problems
Phenomenna
Causes
Solution
Air conditioner
fails to run
Press "ON/OFF"key on
the remote controller, no
"beep "sound comes from
the indoor unit and the
RUN light is off
Power failure
Press“ON/OFF”key after
comeback of power
Power switch is off
Turn on power supply
Fuse of power switch may
have burned.
Replace the fuse
The creepage switch is off
Turn on the creepage
switch
The remote controller is
working out of the
function range
Operate the remote
controller in the function
range of the remote
controller
Batteries of remote controller
exhausted(Information on the
screen darken)
Replace them with new
batteries
After starting up,
the air conditioner
will stop working
in a short time
Remote controller
indicates that the air
conditioner is
working
Air inlet or outlet of the indoor
or outdoor unit are blocked
Eliminate all dirties and
make air smooth.
The air filter is dirt
Clean the filter
Air flow is normal
but the air blew
out is not cool
or warm
Remote controller
indicates that the air
conditioner is working
Temperature is not set
correctly, too high in COOL
mode or too low in HEAT
mode
Set the temperature
properly.
The air filter net has been
blocked with dust or dirt
Clean the ail filter net
Air inlet or outlet of the indoor
or outdoor unit are blocked
Eliminate all dirties and
make air smooth.
Doors and windows are open
Close doors and windows
NOTE: If the unit stops running due to power failure, it will not restart when the power is resumed. To restart
again, press ON/OFF switch of the remote controller.

CHIGO CAC FCU
Fault codes table(1)
Faults
LED flashing conditions
Digital display
Instruction
Probe of Room temp.sensor
goes wrong
TIMER lamp flashes at the speed of
5 Hz
E2
The system will recover
normal operation once
faults are eliminated
Probe of Evaporator sensor
goes wrong
RUN lamp flashes at the speed of 5
Hz
E3
Probe of Condenser sensor
goes wrong
Defrost lamp flashes at the speed of
5 Hz
E5
Water fulfilled protection
Warning light flashes at the speed
of 5 Hz
F5
Outdoor unit protection
Both defrost lamp and warning light
flash at the speed of 5 Hz
F2
Communication fault
Both RUN lamp and defrost lamp
flash at the speed of 5 Hz
E1
The display should be
cleared up by manual
EEPROM Communication
fault
Both RUN lamp and TIMER lamp
flash at the speed of 5 Hz
P6
Recovered after
blackout
Forced cooling indication
Both RUN lamp and warning light
flash at the speed of 5 Hz
No
The display will be
cleared up after exiting
the operating mode.
Anti-cold wind indication in
heating mode
Defrosting preheating is ON
P1
The display will be
cleared up after exiting
the operating mode.

Compact Ceiling Cassette Type
1. Features
2. Specification
3. Dimensions
4. Services Space
5. Wiring Diagram
6. Sound Levels
7. Exploded view
8. Troubleshooting

1. Features
1) Low operation noise
---Streamline plate ensures quietness
---Creates natural and comfortable environment
2) The adoption of the most advanced 3- Dimensional Screw fan
---Reduces the air resistance passing through
---Smoothes the air flow
---Makes air speed distribution to the heat exchange uniform
3) Improvement for easy installation and maintenance
---Little space is required for installation into a shallow ceiling
---Because of the compactness and weight reduction of the main unit and panel, all models can be
installed without a hoist
The sketch of installation (compact type)
4) A full series of controller give you the most suitable solution according to the different requirement
from different customers.
5) Optimized structure makes the air volume and capacity improved rapidly.