Haier CI0193AANB User manual

Air Cooled Semi-hermetic Screw Chiller
Installation, operation and technical manual
Heat pump
R22 refrigerant
193KW~1265KW
3PH, 380V~400V, 50Hz
Haier Commercial Air Conditioning
MANUAL CODE: SYJS-007-08REV. 2008-030-20

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TABLE OF CONTENTS
1. Nomenclature…………………………………………………………………………………………………….3
2. Product character………………………………………………………………………………………………..4
3. Specifications…………………………………………………………………………………………………….6
4. Dimension data………………………………………………………………………………………………….10
5. Installation………………………………………………………………………………………………………..19
6. Unit statup and stop..…………………………………………………………………………………………...26
7. Maintenance……………………………………………………………………………………………………..28
8. General maintenance…………………………………………………………………………………………...30
9. Control device. …………………………………………………………………………………………………..34
10. Wiring diagram…………………………………………………………………………………………………...36
11. Control system…………………………………………………………………………………………………...39

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1. Nomenclature
Note: Haier air-cooled screw (heat pump) chiller is module-structured. The chiller assembly is a flexible
combination of the basic modules of 1 the catalog, models of above 316KW
are some typical module-combined products recommended by Haier.
For example: CI0740AANB chiller is composed of one CI0247AANB and two CI0247AANC chillers.
Capacity Regulation Mode
Step Capacity Regulation Mode: Each compressor has four steps of capacity regulation: 100% - 75% -
50% - 25%, among which 25% step is for the startup of compressor.
Compressor
Qty. Startup Capacity Regulation During Chiller Operation Regulation Steps
1 Compressor 25% 50%,75%,100% 4
2 Compressor 12.50% 25%,37.5%,50%,62.5%,75%,87.5%,100% 8
3 Compressor 8.30% 16.7%,25%,33.3%,41.7%,50%,58.3%,66.7%,75%,83.3%,91.7%,100% 12
4 Compressor 6.25% 12.5%,18.8%,25%,31.3%,37.5%,43.8%,50%,56.3%,62.5%,68.8%,75%,
81.3%,87.5%,93.8%,100% 16
1 3456
chiller
system
CC1069 R22 Aair cooled A 100-115V, 60Hz 1 fixed frequency A-G
air cooled 0237 R407C B water cooled W 220-240V, 50Hz 2 inverter H-Q
water cooled 0 0 1 2 R132 C earth source E 115-220V, 50/60Hz 3 DC inverter R-Z
earth source R134a D 220-220V, 60Hz 4
AR410a E 110V, 50-60Hz 5
HR22 M 220V, 50-60H
z
6
RR407C N 127V, 60Hz 7
WR123 O 240V, 50Hz 8
Cassatte BR134a P 110-220V, 50/60Hz 9
Duct DR410a Q 330V, 50Hz A
Cabinet P400V, 50Hz B
Wall mounted S3300V, 50Hz C
6600V, 50Hz D
380-400V, 50Hz N
415V, 50Hz M
Code Explanation for chiller
compressor type
capacity (for
Centrifugal chiller:
Rt; other: KW)
product type unit character
2789
heat
pump
cooling
only
10
I
Air-cooled module chiller
suitable voltage design number
Light
chiller
Water-cooled cabinet chiller
Hydronic
system
Centrifugal chiller
Screw
chiller
single-packaged
split-packaged
93KW, 247KW and 316KW. In

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2. Product character
Haier air-cooled (heat pump) chiller is a comprehensive product developed by Haier. This product series
adopt compressors, system parts and electrical components of well-known brands and they are characterized
by compact structure, cutting-edge technology, reliable control, cost-effective operation and convenient
installation. The computer-controlled system can not only improve control precision and reliability, but also
realize multi-step energy adjustment, through which the balance of chiller capacity and customer load is
optimized and thus to effect economical operation. The chiller is under continuous control by means of large
volume information display. Unattended and energy-saving operation can be realized using the preset
operation mode and operation program. The computer-controlled system can be connected to master computer
so as to render network-based automatic management of the whole building. The air-cooled integral structure
is dispensed with such components as cooling tower and cooling pump and can save project construction cost.
This product can serve as central air-condition system for hotels, stores and office buildings and can meet the
technological air-conditioning requirements in textiles, chemical, metallurgical, pharmaceutical and power
industries.
2.1 Motor
The compressor motor is 3-phase scal perator induction type, and the operation voltage will be confirmed
as per the nameplate.
The inner refrigerant suction system is cooled by the refrigerant.
Started up by Y -△type
2.2 Compressor
The compressor is equipped with the protection device of discharging temperature, discharging pressure,
suction pressure, motor coil temperature, motor coil, etc.
The unit adopts screw type compressor. Within 3 minutes after startup, the compressor is in the transitional
period.
Note: 1) To avoid the compressor start/stop frequency, once shut off, please do not start up the compressor
in 3 minutes. 2) When several compressors are installed, the time difference of the compressor startup needs to
be set.
The capacity adjustment will be realized by the refrigerant driving the slide valve.
In the compressor there is high efficiency oil segregator.
The screw axis and the rotor are one complete unit in the mold.
2.3 SHELL&TUBE heat exchanger
In cooling mode, SHELL&TUBE heat exchanger is as evaporator, while, in heating mode, it is as
condenser.
The SHELL&TUBE heat exchanger adopts high efficiency copper pipe.
In the SHELL&TUBE heat exchanger, the freezed water will flow out of the copper pipe, while the
refrigerant flow in the copper pipe.
Out of the SHELL&TUBE heat exchanger, there is the heat insulation material.
2.4 Condenser
Condenser adopts the pinned coil type structure, and adopts the high efficiency copper pipe. The condenser
fan motor is with low noise.

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2.5 Electric control
Adopt the PCB to control the operation.
The unit can realize remote operation .
The control of water temperature will act according to the water outlet temperature.
The unit can realize compulsorily unit quantity control and compulsorily capacity control for the unit with
several compressors.
When failure occurs, the normal compressor can continue running (for the unit with several compressors).
When abnormal, the unit can monitor the current water temperature, operation time.
In operation, the unit can monitor the water temperature, capacity state, and operation time.
On the crystal touch screen, you can control the unit.
When abnormal, the failure information will display on the crystal touch screen automatically.
The unit can realize the interlock between the cooling .
Note: Do not damage the power cable.
The following items can be tested if abnormal: high pressure, low pressure, compressor motor coil
temperature, compressor discharging temperature, anti-freeze, reverse power supply, etc.
2.6 Safety Device
For the requirement of safety, there is solenoid valve on the discharging pipe to discharge the gas when the
pressure is too high. Must not install any stop valve on the pipe with safety relief valve.
The unit is equipped with safety device to confirm the safe operation. When one safety device acts, the
failure indicator will light, and the corresponding function will stop, while the other function is normal.
Suggestion: Once one section occurs abnormal phenomenon, you should shut off the unit to check
the reason to avoid the worse damage.
safety device Protection point Set value Action reasons
Delay time when
shut off
The interval time between
compressor stops and restart up 15minutes Compressor startup/stop frequently
Refrigerant charged too much
Ambient temperature too high
Condenser blocked, bad ventilation
High pressure
sensor
Discharging pressure protection
2.4Mpa
Non-condensing gas in system
Chilled water temperature too lowWater temperature
sensor
Anti-freezed protection for chilled
water 5℃Set temperature too low
Because of leakage, refrigerant too little
Solenoid valve of compressor heat exchanging pipe
shut off because of failure
Discharging
temperature
sensor
Discharging temperature
protection in：100±2.5℃
out：89±2.5℃
Stop valve on condenser outlet shutoff
Motor overheat
protection Compressor motor protection in：105±5℃
out：88±11℃
Identical with high pressure switch (high
pressure protection)
Expansion valve shutoff because of failure
Stop valve on condenser outlet shutoff
Chilled water flow too low
Low pressure
sensor
Suction pressure protection
0.35Mpa (cooling)
0.1Mpa (heating)
Evaporator blocked
Reverse phase
protection
Compressor motor reverse protection Phase sequence
correct Power wiring incorrect
Over current relay Compressor motor over current
protection
According to the
compressor Motor over current
/ mastercold water pump and theand remote control unit
and passive element starup/stop control