2

High Energy

Efficiency 水冷离心机组 | 水冷螺杆机组 Stable and Reliable

Operation | 风冷螺杆机组 High-Precision

Control

R134A

Refrigerant

Water-Cooled Inverter

Screw Chiller

3 Ultra-Efficient Inverter Screw Chiller

The TCL Ultra-Efficient Inverter Screw Chiller delivers comprehensive breakthroughs across energy efficiency, reliability,

and intelligence. With IPLV up to 9.83 — combined with energy-saving technology. Dual oil-return and all-round protection

design ensure stable and reliable operation.

· Unit IPLV Up to 9.83

· Combining inverter twin-screw and wide-load permanent magnet motor, with real-time

optimization algorithms for top-tier efficiency

· Advanced oil-circuit control system for precise oil control and stable operation

· Multi-layer protection design that comprehensively avoids shutdown risk

· Uses eco-friendly R134a refrigerant for higher efficiency and more stable operation

Ultra Efficiency

Reliable Operation

3

1 S Screw type: S

2 C Cooling only: C; Heat pump: H

3 W Water-cooled: W; Air-cooled: A; Evaporative: E

4 V Fixed-frequency: omit; Inverter: V

5-7 200 Cooling capacity (tons)

8 E Refrigerant code: R22 omit; R410A: A; R407C: C; R134a: E

9 R Unit type: standard omit; Heat recovery: R; 4-pipe: S

10 H Power supply: 380 V 3-50 Hz default (omit); 10 kV 3-50 Hz: H

11 A Series code: A, PA, etc.

12 -M Design code: -S, -M, etc.

S C W V 200 E H A -M

Product Naming Rule

4

High Efficiency

Oil Separator

Applications

Commercial &

Finance

Hotels &

Apartments

Industrial

Manufacturing

Public

Buildings

Hospitals Rail Transit

4

· Stable oil supply with excellent

airtightness

· Oil separation efficiency over 99%

· Reliable even under

high-temperature conditions

Integrated Control

Cabinet

· On-board integrated inverter

· Microcomputer control system

Twin-Screw Inverter

Compressor

· New twin-screw rotors with reduced

clearance and higher efficiency

· Permanent magnet synchronous

inverter motor (5% efficiency gain)

· Variable volume ratio for efficient

operation across all conditions

· Unique suction filter increasing

suction volume by 40%

Inlet and

Outlet on the

Same Side

· Easy installation,

cleaning, and

maintenance

High-Efficiency

Condenser

· Double-side enhanced

condenser tubes for higher

heat-transfer efficiency

Electronic

Expansion Valve

Flooded Evaporator

· Fast adjustment with wide

capacity-regulation range

· PID control algorithm for

precise temperature control

· Ultra-high-efficiency evaporator

tubes with outstanding heat-transfer

performance

· Innovative tube layout for small

heat-transfer temperature difference

· Easy maintenance and simple upkeep

5 Energy Savings

The TCL Ultra-Efficient Inverter Screw Chiller has been certified by authoritative third-party testing organizations. With IPLV up to

9.83 — it continuously reduces energy consumption under both routine and full-load operation, helping enterprises substantially

cut operating costs, enhance green competitiveness, and simultaneously achieve economic and environmental benefits.

1

4

5

3

2

Integrally formed 4:6 screw rotors：With high mating precision and small clearance, improving volumetric

efficiency and ensuring smooth operation. The integral design provides higher rotor hardness and higher edge

line speed, shortening the compression stroke for higher efficiency.

A high-precision filter element efficiently removes oil-circuit

impurities, protecting compressor life, stabilizing suction pressure,

and reducing energy consumption.

The new low-pressure-drop suction-side flow path is sturdy, has low

pressure loss, and provides smooth suction — avoiding turbulence

and excessive pressure drop, and increasing suction volume by 40%.

Permanent-magnet excitation eliminates excitation loss; rotor

speed synchronizes with supply frequency, reducing stator

current and copper loss; rated efficiency reaches 97.5%.

Combined with wide-load technology, the unit maintains

ultra-high efficiency under any operating condition, providing

significant electricity savings.

Quick response, precise control: Works seamlessly with

variable frequency drives. High-precision recognition and

rapid speed tracking control algorithms ensure efficient

and reliable operation at full load, with full-load efficiency

exceeding 95%.

1

4

5

Unit IPLV up to 9.83

load rate %

2

3

Twin-Screw Compressor

The unit uses a high-efficiency twin-screw compressor that matches user demand in real time, automatically adjusting

compressor output so the machine maintains the best efficiency match and achieves an optimal energy-efficiency ratio, saving

operating costs.

Asymmetric Tooth-Profile Twin-Screw

Oversized Suction Filter

Wide-Load Permanent Magnet

Synchronous Inverter Motor

Inverter Modulation

Variable Volume Ratio (Vi)

Stepless capacity modulation with fast acceleration/deceleration

and high efficiency, automatically adjusting cooling output.

Stepless control dynamically matches varying

operating conditions so the compression process

always approaches the optimum state. This eliminates

over-compression at light load (wasted power and

soaring electricity costs) and under-compression at

heavy load (low efficiency and poor performance).

motor efficiency %

Three-phase

asynchronous motor

Permanent magnet

synchronous motor

6

Proprietary intelligent volume-ratio (Vi) optimization technology — gives the compressor a “smart brain,” delivering a qualitative

leap in cooling performance and energy efficiency. By deeply integrating the characteristic curves of the compressor, inverter, and

motor, the technology fully exploits the performance and reliability of the inverter twin-screw compressor. Across all operating

phases — startup, loading, unloading, and shutdown — the slide valve and rotational speed coordinate intelligently to balance

smoothness and efficiency, supplying just the right amount of cooling capacity for peak performance around the clock.

Vi Optimization Inverter Control Technology

Startup The motor starts at low speed and the slide valve quickly moves to the mid position to avoid

inefficient operating conditions.

Loading As motor speed rises, the system automatically searches for the optimal Vi position. Built-in algorithms

analyze operating parameters in real time and simultaneously optimize slide valve position and motor

speed, prioritizing slide valve adjustment while precisely matching motor speed to load demand.

Unloading As motor speed decreases, the slide valve synchronously moves to the optimal Vi position. The

algorithm continuously and dynamically adjusts both slide valve position and speed, prioritizing

slide valve reduction and matching with motor speed for precise capacity modulation.

Motor speed is gradually reduced and the slide valve moves to its minimum position;

once the motor speed reaches the set threshold, the system shuts down smoothly.

Shutdown

7 Outlet

Inlet

Double-side

Enhanced Tubes

Innovative

Tube Layout

High-Efficiency Flooded Evaporator

Innovative tube layout: Refrigerant is distributed radially at the bottom of the evaporator through a distributor; heat-exchange

tubes are fully immersed in refrigerant for enhanced heat-absorption capacity, ensuring fully uniform evaporation in all tubes and

improving heat-transfer efficiency.

Double-side enhanced tubes: Surfaces specifically engineered for different heat-transfer mechanisms and refrigerant media,

combined with fluid simulation co-design, enable more efficient heat exchange with less energy and less refrigerant.

High-Efficiency Subcooling Condenser

Optimized subcooler design: Reduces subcooler pressure loss and significantly improves subcooling, eliminating ineffective heat

exchange and improving overall unit efficiency; uniform refrigerant gas distribution avoids dead zones in heat exchange, ensuring

every unit of cooling capacity is fully utilized.

Removable end covers: Allow easy access for mechanical cleaning of the water-side tube bundles, resulting in low maintenance

cost.

Gaseous Refrigerant Inlet

Liquid Refrigerant Outlet

High-Precision Throttling Electronic Expansion Valve

3800-step high-precision expansion valve modulates evaporator refrigerant flow with fast response, rapid adjustment, and a wide

capacity-modulation range.

Combined with advanced PID control algorithms, it precisely regulates refrigerant flow, achieving high water-temperature

accuracy and efficient, energy-saving system operation.

8

1 5 10

Direct Start

Solid-state Soft Starter

Star-delta Starting

Variable Frequency Start

R134a

Power failure

protection

Protection against excessively

low water temperature from

the evaporator

High and low temperature

protection for condenser

water inlet

Compressor internal

protection switch

Low exhaust

superheat protection

Prompt for excessive

load on the unit

Electronic expansion

valve fault protection

Provides a stable, efficient oil supply,

ensuring excellent lubrication of every

moving part of the compressor.

· Combines oil-separator return with cross re-injection return: high-pressure gas cross re-injection

achieves oil return, eliminating the risk of oil pooling in the evaporator and ensuring safe, reliable

operation.

· An intelligent oil heater automatically regulates oil temperature according to operating state,

maintaining excellent oil-film properties for reliable lubrication.

· External-type oil filter design allows quick replacement and maintenance.

Safe and Reliable Operation

Reliable Oil Circuit System

Level 1:

High-Efficiency Oil Separator

High-pressure oil from the secondary separator

ejects approximately 0.1% of the oil pooled in

the evaporator back into the compressor.

Level 2:

Ejector-Pump Return

Dual Oil-Return Technology

Mixed fluid outlet

Ejected flow inlet

Ejector inlet

chilled water outlet

chilled water inlet

electronic expansion valve drying filter barrel

Current

Time

Shell-and-tube

condenser

cooling water inlet

cooling water outlet

oil separator

oil filter Ejector pump

Variable frequency

screw compressor

Shell and tube

evaporator

oil

heater

Smooth Startup

· Inverter-driven startup produces an extremely smooth current rise during

motor startup. Compared with star-delta startup, inverter startup current is

significantly lower, completely eliminating the inrush current that can occur

with conventional startup.

· The smooth start reduces the additional stress and wear that current

surges impose on motor windings and bearings, fundamentally ensuring

stable operation and substantially extending motor service life.

Nominal Current Under

Various Operating Conditions

R134a — High-Efficiency, Zero ODP Refrigerant

· R134a delivers high cooling efficiency, has no ozone-depletion impact, and offers

stable, reliable performance.

· Combined with flooded evaporation, it substantially improves heat-exchange

efficiency while reducing refrigerant charge — delivering reliable cooling with greater

environmental benefits and providing a solid foundation for long-term stable operation.

Multi protection technology comprehensively protects the unit and ensures stable operation under all conditions.

Safety Protection

Motor temperature

protection

Exhaust temperature

protection

Water flow

protection

Chilled water

antifreeze protection

Oil filter differential

pressure protection

GD TCL INTELLIGENT HEATING & VENTILATING EQUIPMENT CO.,LTD.

Address: No.7 Yuanlin Road, Nantou, Zhongshan, Guangdong, PR China

Web : cac.tcl.com E-mail : hvac@tcl.com

TCL CAC TCL CAC TCL CAC HVAC-TCL TCL- CAC V26.09.15