TICA TAS-AH Series User manual

AIR-COOLED SCROLL-TYPE CHILLER
1
INSTALLATION&
OPERATION MANUAL
Installation&Operation Manual
Air-cooled Scroll-type Chiller
Model: TAS-AH series、TAS-BH series、
TAS-BHA series、TAS-BCA series

AIR-COOLED SCROLL-TYPE CHILLER
2
Contents
I. Overview..................................................................................................................................... 4
II. Safety Precautions................................................................................................................... 6
III. Unit Description....................................................................................................................... 8
1. Scope of Application, Purposes and Characteristics......................................................... 8
2. Standard Compliance............................................................................................................. 9
IV. Specifications........................................................................................................................ 10
1. Model Nomenclature............................................................................................................. 10
2. Technical Specifications....................................................................................................... 10
3. Structure Diagrams............................................................................................................... 11
V. Unit Installation....................................................................................................................... 13
1. Key Points for Installation..................................................................................................... 13
2. Installation Diagrams ............................................................................................................ 13
3. Unit Installation ...................................................................................................................... 19
4. Installation of the Water System ......................................................................................... 21
5. Electrical Installation............................................................................................................. 30
VI. Unit Commissioning and Operation Description.............................................................. 38
VII. Operation Description of the Unit Controller.................................................................... 40
1. Safety Precautions................................................................................................................ 40
2. Application Scope.................................................................................................................. 41
3. System Characteristics......................................................................................................... 41
4. Unit Operation Description................................................................................................... 42
VIIIUnit Maintenance.................................................................................................................. 46
IX. Common Fault Analysis of the Unit and Handling Methods........................................ 48
X. After-sales Service................................................................................................................. 51
XI. Other Information.................................................................................................................. 52
1. Installation of the Remote Controller.................................................................................. 52
2. Auxiliary Electric Heater ....................................................................................................... 54
3. Interlock Controller................................................................................................................ 57
4. Installation Description of the Main Water Outlet Temperature Sensing Probe.......... 57
5. Description of the Connection Between the Temperature Sensing Probe/Water Pump
and the Chiller........................................................................................................................ 58

AIR-COOLED SCROLL-TYPE CHILLER
3
6. Environmental Protection Description................................................................................. 59

AIR-COOLED SCROLL-TYPE CHILLER
4
I. Overview
This manual is the customer's property and should be used together with the unit. After work,
put the manual back in the technical documentation bag and keep it properly.
Please read through this manual carefully before installing the air conditioning unit, and install
and maintain the unit according to the manual, ensuring normal and reliable operation of the
unit. Only professionals appointed by company can install the air conditioning unit. The
vendor shall not bear any responsibility if any unqualified operator installs or maintains the
unit or the unit is not installed or operated according to requirements of this manual.
This manual does not cover the differences between various units or all the problems that
may be met during installation, so it is impossible for it to provide instructions to all the
situations that may occur during installation. If the buyer wants to get further information or
meets a special problem but a detailed explanation is not provided in this manual, please
contact company.
The prompts of "Danger", "Warning", and "Caution" are provided at proper parts in this
manual. To ensure personal safety and normal operation of the unit, read through the content
carefully and observe the related requirements.
Danger: The prompt points out the potential hazard situation. Ignoring it may
lead to death or serious personal injury.
Warning: The prompt points out the potential hazard situation. Ignoring it
may lead to minor or moderate personal injury. This prompt is also used for warning of unsafe
activities.
Caution:The prompt points out the potential situation of equipment damage.
Ignoring it may lead to equipment damage or property loss or possible environmental
pollution. It also provides useful help information, which may be good to unit operation or
extension of the unit service life. However, it does not indicate that the help information is
optimal or is directly related to the improvement of unit operation.
Danger
Prior to installation or maintenance, lock the unit power supply and disconnecting
switch in the power-off state, avoiding personal casualties caused by electric shock or
contact with a moving part. All the installation procedures of the air conditioning unit
must comply with the national, provincial, and local regulations.

AIR-COOLED SCROLL-TYPE CHILLER
5
Warning
1. Do not use unqualified refrigerant, refrigerant substitute or refrigerant additive.
Incorrect using method or using unqualified refrigerant, refrigerant substitute or
refrigerant additive will lead to unit damage and various safety hazards. Please
select qualified refrigerant. All the technicians operating refrigerant must have
acquired qualification certificates, and know very well and strictly observe the
technical requirements, laws and regulations related to refrigerant use, handling,
recovery, and recycling.
2. If the ambient temperature is lower than 5°C and a power failure occurs, be sure to
thoroughly drain water from the unit and pipeline. If the ambient temperature is
lower than 5°C, ensure that the unit is in the power-up state, the water system is
fully filled with water, and the chilled water circulating pump of the air conditioner
must be interlocked with the modular chiller. In this way, the modular unit can
automatically control the water pump operation or heating operation, thereby
implementing automatic anti-freezing protection of the air conditioning water
system. The purpose is to protect facilities such as the unit and water pipeline
against damage caused by freezing of water in the pipeline of the air conditioning
water system.
3. If the ambient temperature is higher than 5°C, especially in summer, do not drain
water to prevent air flowing into the pipeline and causing internal rust and
corrosion and ensure normal water pressure of the system. Check the water
quality before you turn on the unit next time. If the water quality is bad, replace the
water and clean the filter.

AIR-COOLED SCROLL-TYPE CHILLER
6
II. Safety Precautions
◆Before operating the unit, read all the items in "Safety Precautions"
carefully.
◆"Safety Precautions" lists all important items related to safety. To
prevent electric shocks, fire and other possible injuries, be sure to bear
in mind and strictly abide by the following rules:
Install a leakage circuit breaker.
The user cannot try to install the unit independently. Improper installation may lead
to water leakage, electric shock, or fire.
Be sure to install the grounding wire, which cannot be connected to the gas pipe,
tap water pipe, lightning arrester, etc. Improper installation of the grounding wire
easily leads to an electric shock accident.
Be sure to make a foundation platform before installing the unit to ensure stable
operation o the unit.
Use the accessories specified by company and ask the manufacturer or authorized
distributor to provide installation and technical services.
The main controller must adopt the same power supply system together with the unit.
The control data line must be separated from the power cord of power supply to
prevent interference.
Do not insert your fingers or other objects into the air outlet or inlet, lest you would
be injured or the air conditioner would be damaged. The fan running at a high
speed is very dangerous. Prevent kids from getting close to the fan.
Do not damage the power cord or turn on/off the air conditioner by inserting/pulling
out the power plug.
Do not use water to flush the air conditioner directly; otherwise electric shock or
other accidents are easily caused.
Ensure smooth air inlet and outlet of the air conditioner.
Do not turn on/off the air conditioner frequently; otherwise the air conditioner may
be damaged due to frequent startup.
If the ambient temperature is lower than 5°C and a power failure occurs, be sure to
thoroughly drain water from the unit and pipeline. If the ambient temperature is
lower than 5°C, ensure that the unit is in the power-up state, the water system is
fully filled with water, and the chilled water circulating pump of the air conditioner
must be interlocked with the modular chiller. In this way, the modular unit can
automatically control the water pump operation or heating operation, thereby

AIR-COOLED SCROLL-TYPE CHILLER
7
implementing automatic anti-freezing protection of the air conditioning water
system. The purpose is to protect facilities such as the unit and water pipeline
against damage caused by freezing of water in the pipeline of the air conditioning
water system.
If the ambient temperature is higher than 5°C, especially in summer, do not drain
water to prevent air flowing into the pipeline and causing internal rust and corrosion
and ensure normal water pressure of the system. Check the water quality before
you turn on the unit next time. If the water quality is bad, replace the water and
clean the filter.
If the unit will be used again after stop for a long term, first connect the power
supply for the unit for preheating for 24 h.
The user cannot try to repair the unit independently. Improper repair may lead to an
operation failure or burnout of the unit. To have the unit repaired, the user needs to
contact the local branch or authorized maintenance service provider.
Ensure the unit is installed in an open, dry, and ventilated space without corrosion.
Do not install the unit under trees or in dusty environment.
Caution
When charging or adding refrigerant to the unit, make sure that the
charging amount and refrigerant type are consistent with the information on
the unit nameplate. A refrigerant charging mistake may lead to a unit fault or
other potential safety hazards.
Acid, alkali, salt spray and other corrosive gases will damage the unit
casing, pipeline or electrical components. The unit installation position
must be far away from the site with corrosive gases.
The circulating water pump of the water system must be interlocked with
the main control board of the unit. Otherwise, commissioning and
acceptance cannot be performed. Company will not bear any responsibilities
for the incurred damage of the water-side heat exchanger and other
accidents.

AIR-COOLED SCROLL-TYPE CHILLER
8
III. Unit Description
1. Scope of Application, Purposes and Characteristics
Air-cooled scroll-type chiller uses the innovative modular design. The entire unit is composed
of one or more modules, each of which consists of three or four independent cooling systems.
The electric controllers of modules are independent of each other and modules are
connected through communication cables to form a control network.
Air-cooled scroll-type chillers can be widely applied in new and restructured Industrial and
civil construction projects, such as hotels, shopping malls, office buildings, entertainment
centers, theaters, stadiums, plants, hospitals, high-grade apartments, and industrial cooling
sites. Air-cooled scroll-type chillers do not need dedicated equipment rooms and cooling
towers, and therefore, they become the optimal choice for Central Business Districts (CBDs)
and water-stressed regions.
The unit has the following features:
High efficiency, energy saving, and reliable performance
The unit uses efficient scroll compressors and world famous excellent cooling parts, to ensure
the maximum energy efficiency of the unit. The modular combination design allows the unit to
automatically lower the load in the case of partial loading, thereby achieving energy-efficient
operation.
High-precision EXVs for throttling
The unit uses Electronic Expansion Valves (EXVs) as fine and adaptive control components for
refrigerants, to implement dynamic matching between the refrigerant and compressor for the
coolingsystem. This fully improves the optimum efficiencyof every component in the system and
ensures the best operation pressure and temperature for the system.
Support for connection to the building automation system
The unit is equipped with RS485 interfaces for connecting to the centralized building control
system. It can be integrated into the centralized building control system via legitimate
protocols, to implement building automation.
Convenient installation
The compact air-cooled scroll-type modular machine can be placed on roofs, spacious
balconies, and other appropriate open spaces, which saves installation space. In addition,
cooling towers, cooling water pumps, boilers, and relevant pipes are not required, making the
installation of the entire central air conditioner easier.
Intelligent defrosting
The unit automatically determines the optimal defrosting time based on the ambient
temperature and actual operation parameters, to prevent frost residue or frequent defrosting.
In addition, intelligent defrosting can prevent air conditioning effect from being affected by
large water supply temperature fluctuation during unit defrosting. But heat pump type units

AIR-COOLED SCROLL-TYPE CHILLER
9
have this function.
Multi-protection design
The modular design allows starting the unit in a hierarchical way, reducing the impact of the
startup current on the power grid.
The unit is equipped with multiple types of protection, including compressor overload
protection, water shortage protection, system overpressure protection, system
under-pressure protection, compressor exhaust over-temperature protection, frequent unit
startup protection, external interlock protection, water outlet under-temperature protection,
and automatic winter anti-freezing protection
Microcomputer control system
The microcomputer control system uses microcomputer centralized control to implement
combined installation and control of multiple modular units. A single controller can control a
maximum of 16 units, making the unit operation and management more convenient. The
microcomputer control system has the following functions:
Timed power-on/off.
Automatic fault judgment, handling, and alarm display.
Operation and control of auxiliary electric heaters for heat pump units in winter.
Intelligent defrosting control (for heat pump units in winter) and intelligent anti-freezing
operation control
Fuzzy control and balanced operation of compressors to implement optimal load
matching.
Password protection permissions for parameter settings.
Fan coil unit interlock control function.
Wide operation range
Model
Cooling
Heating
TAS165/260AH
5℃-48℃
-10℃-48℃
TAS340/460BH
5℃-48℃
-15℃-48℃
TAS340/460BHA
-15℃-48℃
-15℃-48℃
TAS260BCA
-15℃-48℃
/
2. Standard Compliance
The unit complies with the national product standard GB/T 18430.1 Water Chilling (Heat
Pump) Packages Using the Vapor Compression Cycle Part 1: Water Chilling (Heat Pump)
Packages for Industrial & Commercial and Similar Application.

AIR-COOLED SCROLL-TYPE CHILLER
10
IV. Specifications
1. Model Nomenclature
T A S 165 AH
Feature: heat pump type-H; all year heat hump-HA;
all year cooling only-CA
Design SN: A、B (scroll-type,shell-type,R410Arefrigerant)
Model: 165, 260 ,340 or 460
Name code: air-cooled scroll-type chiller (heat pump)
2. Technical Specifications
Note: The performance parameters on the unit nameplate shall prevail if the following
performance parameters differ from those on the nameplate.
(1) Performance parameter list of perennial heating and cooling units in all operating
conditions and standard units
Model
TAS165AH
TAS260AH
TAS340BH
TAS340BHA
TAS460BH
TAS460BHA
TAS260BCA
Nominal cooling
capacity
kW
165
260
340
460
260
Nominal heating
capacity
kW
180
280
370
485
/
Nominal Power Input
kW
53.2
83.8
109
148.3
83.8
Single unit energy
regulation
%
0-25-50-75-100
0-33.3-66.7-100
0-25-50-75-100
0-25-50-75-100
Power supply
-
380V 3N~ 50Hz
Rated water flow
m3/h
28.4
44.8
58.5
79.1
44.8
Water resistance
kPa
45
45
52
56
62
Water inlet/outlet pipe
diameter
DN
DN80
(Victaulic coupling)
DN100
(Victaulic coupling)
DN125 (Victaulic coupling)
DN80
(Victaulic coupling)
Operating mode
-
Automatic operation controlled by microcomputers
Compressor type
-
Hermetic scroll compressor
Compressor quantity
Set
4
4
3
4
4
Fan
Type
-
Low-noise axial fan
Air
flow
m3/h
66000
112000
123000
164000
103000
Qty
Set
4
6
8
4
Refrigerant
Type
-
R410A
Dimensions
Length
mm
2200
2200
3500
4700
2200
Width
mm
1720
2400
2250
2250
2400
Height
mm
2000
2235
2450
2520
2235
Unit weight
kg
1460
2050
3100
3700
1800
Remarks:
1. The nominal cooling capacity and nominal cooling input power are tested at the rated
water flow, water outlet temperature of 7°C, and outdoor dry-bulb temperature of 35°C.
The nominal heating capacity is tested at the rated water flow, water outlet temperature
of 45°C, outdoor dry-bulb temperature of 7°C or outdoor web-bulb temperature of 6°C.
2. About 6% loss caused by system pipelines, water pumps, valves, and dirt after unit

AIR-COOLED SCROLL-TYPE CHILLER
11
installation shall be considered for the cooling (heating) capacity in actual application.
3. Units of model are not allowed to run in cooling mode at an ambient temperature lower
than 5°C.
4. The specifications are subject to change due to product improvement without a prior
notice;
5. The specifications above are based on a single module. Multiple modules can be used in
combination. Units of model support the combination of a maximum of 8 modules.
3. Structure Diagrams
TAS165AH
6-φ14
TAS260AH
6-φ14
TAS340BH、TAS340BHA

AIR-COOLED SCROLL-TYPE CHILLER
12
TAS460BH、TAS460BHA
↑
↑
地 脚 螺 栓
TAS260BCA
DN8 0wat er o utle t
( Victaul ic co upl in g )
DN8 0wat er inlet
( V ic taul ic co upl in g )

AIR-COOLED SCROLL-TYPE CHILLER
13
V. Unit Installation
1. Key Points for Installation
Acceptance
After receiving units, a customer shall carefully check whether the unit casings and
internal components are in good condition. If a unit is damaged, record it in the delivery
note and notify the carrier and local sales office of the damage in written form within
three days.
Check whether the power supply for the unit is consistent with the information
specified in the nameplates of the unit compressor, fan motor, and 4-way valve (only
heat pump type units have), and other components, and check whether information on
the unit nameplates is correct. Ensure that the maximum voltage deviation of the
power supply cannot exceed ±10%.
Handling
Use a forklift or crane with appropriate tonnage to handle units. Use canvas ropes for
the handling, wind the canvas ropes around the unit bottom, and tighten the ropes.
For the external dimensions and weight of the unit, see the technical parameter lists.
Installation position
The unit can be installed on the ground or roof with prefabricated unit foundation,
dedicated platform, or other places convenient for the unit installation and capable of
bearing the unit operation weight. Be sure to pay attention to the following requirements:
A: Keep the unit more than 1.8 m away from surrounding objects, and ensure proper
ventilation conditions for the unit.
B: When multiple units are placed side by side, keep a distance of at least 3.0 m
between two adjacent units to ensure excellent heat transfer effect.
C: Install the unit close to the main power supply, to prevent unit startup exception
caused by excessive voltage drop.
D: Construct drains around the unit beforehand and take account of the unit drainage
in winter.
E: Install the unit more than 10 m away from residential areas to prevent noise from
disturbing residents during unit operation.
Caution
Acid, alkali, salt spray and other corrosive gases will damage the unit
casing, pipeline or electrical components. The unit installation position
must be far away from the site with corrosive gases.
2. Installation Diagrams
(1) Installation Foundation Diagrams
The unit can be directly placed on a base with drains reserved around. The base can be

AIR-COOLED SCROLL-TYPE CHILLER
14
precast using cement. The unit can be supported by a bracket made of angle steel, with
shockproof rubber pads. It can be also placed on the ground or flat roof. The base surface
must be flat and horizontal.
The figure below shows the foundation for modular combination installation of the
TAS165AH,TAS260AH, TAS260BCA units.
Installation Spacing (mm)
Model
m
n
TAS165AH
≥1000
1720
TAS260AH
≥1000
2400
TAS260BCA
≥1000
2400
2200 2200
m（2200+m）*a-m
100 150
100
n
22002200 m
m
2200 2200
（2200+m）*a-m
150
m22002200
100
≥300
200
nn/2
n/2
Installation Spacing (mm)
Model
TCA501XH
TCA801XH
m n
≥1000
≥1000 1720
2400
Concrete of C20
or higher grade
I-steal 20a
1. I-steal foundation diagram Concrete of C20 or
higher grade Rubber pad
Concrete of
C20 or higher
grade
Drain
Drain
Rubber pad
2. Concrete foundation diagram
The figure below shows the foundation for modular combination installation of the
TAS340BH、TAS340BHAunits.

AIR-COOLED SCROLL-TYPE CHILLER
15
TAS460BH、TAS460BHA
Notes:
a. a indicates the number of modules of different models. For the values of mand n, see
the table in the installation foundation diagrams.
b. The foundation is made of reinforced concrete or channel steel frame, and is capable of
bearing the weight of no less than 500 kg/m².
c. Use rubber damping pads or shock absorbers with the thickness not smaller than 20 mm
between the unit base and the foundation.
d. Use M10 and M12 bolts to fasten the unit to the foundation.
e. The foundation surface must be flat and horizontal and drains need to be reserved
around the foundation.
f. For I-steel foundation, use stand columns to elevate the drainage; for reinforced concrete
foundation, build foundations separately for each unit. Drainage should also be
separated. In snowy or frozen places, the foundation should be elevated and drainage
capacity should be increased. For details, see anti-freezing measures described in the
instructions.
(2) Installation Space Diagrams
The figure below shows the installation space of the TAS165AH, TAS260AH, TAS260BCA
units.
Installation Spacing (mm)
Model
m
n
TAS165AH
≥1000
1720
TAS260AH
≥1000
2400
TAS260BCA
≥1000
2400

AIR-COOLED SCROLL-TYPE CHILLER
16
Installation Spacing (mm)
Model
TCA501XH
TCA801XH
mn
≥1000
≥1000 1720 2400
Inlet/outlet pipe
Inlet/outlet pipe
Top view
Unit height
Side view
≥1800 ≥1800
m
m
n
≥3000
m
The figure below shows the installation space of the TAS460BH、TAS460BHAunits.
≥5000
≥1800 ≥1800
Water Pipe
1000
1000
1000
2260
Water Pipe
≥1000
≥2000
The figure below shows the installation space of the TAS340BH、TAS340BHA units.
Notes:
a.The installation space of the unit must meet relevant dimension requirements for the ease
of overhaul and maintenance.
b.The diameters of the main water inlet and outlet pipes of the unit must be verified by
professionals with a reference to the recommended pipe diameters in the manual.
c. Keep a certain distance between the main water inlet and outlet main pipes of the unit and
the unit for the ease of installation and maintenance.

AIR-COOLED SCROLL-TYPE CHILLER
17
d.Install sewage valves and drain valves at the lowest positions of the main water inlet and
outlet pipes and reserve drains around the unit.
(3) Monsoon Area
In the region of Monsoon, if air side heat exchanger is installed against monsoon,
please install wind cap as request in case strong wind may affect air flow of the
unit, meanwhile avoid snow accumulation when snowing.
1.2m
Windshield
Air
(4) Cold Area and Anti Snow
In the region of frequent snow, please make treatment of anti snow to air side
heat exchanger and air outlet. Meanwhile, please raise installation height in the
freezing and snow area.
Installation diagram of snow area:

AIR-COOLED SCROLL-TYPE CHILLER
18
1.5m
Snow cover
20°
1.5m
20°
Monsoon
Snow cover
3m
Installation diagram of freezing area:
Steel beam
Reinforced concrete
Underground drain
Caution
Anti-freezing and ice-melting engineering installation for heating unit used in
North:
A: For the unit to be used for northern heating, foundation must be prepared and
cannot be made into a platform. The bottom channel steel of the unit must be

AIR-COOLED SCROLL-TYPE CHILLER
19
supported at a height at least 1 m. The foundation of each unit must be independent
to facilitate drainage. Never connect the supports of a row of units together.
B: It is not recommended to install more than two rows of units. Otherwise, the
ambient temperature of the units located in the middle position will be 5°C lower
than the actual temperature, which affects unit cooling and draining. Water may be
frozen during flowing.
C: According to unit drainage and lower-part freezing, it is recommended to clean
the lower part of the unit periodically. The cleaning methods include melting,
manual defrosting, and defrosting by salt.
D: It is recommended to install snow melting line on the floor of the lower part of
the unit to avoid water freezing when the temperature is too low. The special snow
melting line with auto temperature regulating function is recommended. As the
temperature drops, the heating volume of the line increases. When the temperature
rises, the power reduces.
3. Unit Installation
Caution
After a unit is delivered from the factory to the installation site, keep the
proper package before hoisting. Pay attention to the following points during
hoisting:
A: Handle the unit with care and keep the unit upright.
B: Prevent sliding caused by collision with other objects. No person is

AIR-COOLED SCROLL-TYPE CHILLER
20
allowed to stand below or near the unit for the sake of safety. Select the
round steel, rope, and crane based on the weight of the unit.
C: Use protection pads in places where steel ropes contact the unit, to
prevent scratches or unit deformation. In addition, use supports
between ropes to prevent the tightened ropes from damaging the unit.
Hoisting diagram for TAS165AH、TAS260AH、TAS260BCA