DC Inverter Heat Pump Air Cooled Scroll Chiller

Short Description:

● Designing more than 10 safety protection functions;
● Chiller unit is suitable for operation in a wide outdoor temperature range, from -20˚C~48˚C
● The system keeps operation when parts of compressors failure
● The chiller adopts modular combination design ( a maximum of 16 units)
● Starting all units in steps
● Flexible Application
● Smart Defrosting System
● PLC Control System
● Intelligent Combination Control Function
● Free Access to Building Automation System

Product Detail

Tags

Sophisticated Design

The Holtop inverter type air-cooled chiller (heat pump) incorporates advanced variable frequency technology, combining Holtop's extensive air conditioning design experience with user feedback to continuously innovate in both technology and energy effciency. This chiller meets the comfort and energy-saving requirements of air conditioning systems across various space environments.

DC inverter intelligent control	The variable frequency module PCB control board, developed in collaboration with Holtop and manufacturers of compressors, valves, and controllers, ensures stable operation, advanced logic, and multiple protections, safeguarding the entire air conditioning system.
Fan & motor	Adopt large air volume, low noise fan impeller with low rotation speed and high efficiency motor.
Air side heat exchanger	The design of ring type air inlet heat exchanger makes the air distribution more uniform and the heat exchange more adequate.
Inverter compressor	DC inverter technology offers a high degree of adjustment, making the air conditioning system more comfortable and energy efficient.
Electronic expansion valve	Precise throttling control of the 480-step electronic expansion valve to keep the unit running at the optimal energy efficiency
Water side heat exchanger	Shell and tube heat exchanger with new spiral baffle technology is about to increase efficiency of 10%.
Liquid storage tank	Large volume and low pressure loss liquid storage tank to ensure the system runs more reliably
Economizer	To ensure effective subcooling of the refrigerant, a stainless steel brazed plate heat exchanger is utilized.

RELIABLE OPERATION

Integrated Protection

Designing more than 10 safety protection functions, which can ensure chiller unit and the system operation in all-round protection. The unit can be controlled through a multi-variable monitoring system to ensure the unit with stable and efficient operation.

Wide Temperature Range of Application, Worry-free of Operation
Chiller unit is suitable for operation in a wide outdoor temperature range, from -20˚C~48˚C.

work temp
Note: The solid colour marks are the operating range of normal temperature type equipment. The dotted line marks are the extended operating range of low-temperature type equipment.
Chiller Unit Operation When Has Fault
A single unit is designed with multiple compressors. When one of the compressors fails, the rest of the compressors in the system can still operate normally without affecting the operation of the whole system.

failure operation

MODULAR COMBINATION
The chiller adopts modular combination design and does not need to set the master or sub-mater unit. Each combination is able to connect a maximum of 16 units, even they are made of different models, to meet the variable demands of different buildings.

modualr combination
Steps Starting
Starting all units in steps, in order to lower the starting current, reduce the shock to power grid, and avoid affecting the security of other electrical equipment.

step start
Flexible Application

Investment: Add extra units into combination at any time, convenient for multiple stages of investment.

Transportation: The volume of each unit is compact, can be transported individually, does not need a crane at the project site, can save transportation cost.

Installation: Does not need machine room or cooled water system, only somewhere with good ventilation. The water pipes are designed on side of the unit, which can be easy for chilled water connection and save installation space.

System: At the water circulating system, besides the standard use of the constant flow system, it is optional to use the primary pump with a variable flow system, and the variable speed control cabinet is optional to select.

circulation

Smart Defrosting System

By sensing with the multi-variables system to have accurate judgement on the situation of frosting, the chiller itself can be able to choose the best time to enter or exit defrosting, to avoid insufficient defrosting or over defrosting. In a duplex system, the units can achieve alternate defrosting. When heating under extreme low-temperature conditions, setting manual defrosting for better performance.

defrosting

INTELLIGENT CONTROL

Intelligent PLC Control System:

The PLC control system combines the simplicity and convenience of the wired control system and the advantages of the centralized group control system to achieve chiller group centralized control. One PLC control system can manage 1 to 8 groups. Each group can control 1 to 16 pieces of modular chillers. The system can control up to 128 modular chillers. The control system also delivers various features such as group mode switching, temperature adjustment, on/off control, etc to adopt numerous applications.

control

Free Access to Building Automation System:

Standard RS485 building communication interface comes with open access to standard ModBus communication protocol. The device can be easily connected to the building control system (BAS) for centralized control, easy to achieve intelligent control, avoid unnecessary energy waste, and save air-conditioning operating costs.

BMS