EVI 29KW 60℃ Air to Water Hot Water Heat Pump

Model Number:KX350SDE
Heating Capacity:28.5 KW
Type: Air Source Heat Pump
Installation: Freestanding
Housing Material: Galvanized steel /anti-rusting stoving varnish/white
Certification: CE,ISO14001, ISO9001, OHSAS18001
Place of Origin: Guangdong, C
Description Brand Review

EVI -25Degc Air to Water Hot Water Heat Pump Commercial Applications

Tongyi KX350SDE EVI low temperature heat pump adopted the latest enhanced vapors injection technology ,which extend the heat pump working temperature down to -25DegC. The professional Copeland EVI compressor offers 20% higher heating capacity under the low temperature working conditions. Heating and cooling model can satisfy most customer needs for house heating and cooling.

Key Features 
Copeland EVI compressor
Working temperature range from -25 to 43DegC

User-friendly Display
The display on the unit is with a 5-inch touch color screen which is quite easy for the users to operate. 

Reliable Water Temperature Outlet
The max. outlet water temperature of the unit is up to 60oC, always supplying reliable and sufficient hot water.
The system runs safely, steadily and reliably thanks to our full protection: high temperature protection, compressor overload & overheat protection, power phase sequence & over/under voltage protection,etc.

Flexible Installation
The Cuboid shape modu le design of the unit makes the project installation saving more space.

Remote control
BMS contact point / modbus support(with RS485) to Amazon cloud, realize remote control function optional
Low noise and vibration 
Auto-defrosting program 


Model No.


Standard configuration


Copeland Scroll compressor

Heat exchanger

Co-axial heat exchanger (tube-in-tube)

Expansion valve

Saginomiya /sanhua EEV


AUTO -defrosting (reversing)

Technical specification


Heating capacity (KW)






Test condition: ambient temperature DB7℃/WB6℃,to heat initial water water temperature from 40℃to 45℃。

Main Parts

High-performance FM
It use outer rotor axial flow silent fan with five-leaf balanced aluminum alloy wind wheel. It has the advantages of corrosion resistance, large air volume and low noise.

Patent louvered casing

Tongyi’s patent louvered casing can better for waterproof,windproof and dust-proof. Patent no.:CN201030670236.9.

EEV,precise flow control
Wide working temperature range, faster and more accurate refrigerant flow control than capillary and mechanical expansion valve. Best choice to achieve higher efficiency and energy-saving.

World famous scoll compressor
world famous scroll compressor with low energy consumption and high energy efficiency output, which effectively shortens the heating water time and double extend the useful life of the unit.


Unique hyfrophilic fin coil heat exchanger,large amount for air inlet
Air exchangers(fin-coil)with hydrophilic coating are strongly anti-corrosive and perform at high efficiency.




As a leader and one of the largest professional heat pump manufacturers in China,we have a complete industrial chain,for example , the sheet metal parts,heat exchangrs including evaporators and condensers are all made in house or by our partners that we have a stake.It helps us better control the quality.optimize the performance easily and ensure on-time delivery. A lot of quality suppliers have established strategic development partnership with us,such as Emerson,Sanyo,and Panasonic.Compared with other manufactures,we are given priority when purchasing most of the key materials & parts. 


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