Sustainable Technologies Tongyi Water to water Heat Pumps
Many buildings have large internal zones that require cooling only during occupied hours, or cooling, year round due to internal heat gains. The chiller condenser water heat is recovered, instead of being rejected to the outside, and used as a heat source for a water-source heat pump system serving the perimeter spaces.
Tongyi water to water heat pumps can be reliable,cost-effective alternative to conventional space heating and cooling systems,such as packaged rooftop systems or systems with central boiler/chiller plants.
Tongyi water to water heat pumps are relatively simple to design and install,are low in first cost,and their modularity facilitates future tenant improvements and remodels.
Safety Protection
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intelligent protection functions
Prevent serious problems
Compressor overcurrent/overtemperature sensor
This safety acts to prevent internal heat from damaging the compressor.Fault conditions include:
a)in small units which do not have an antirecycle timer,and immediate restart after shutdown.If the refrigerant pressure across the compressor has not bad time to equalize,the compressor may not be able to start.This can be caused by thermostat tampering or a power disruption.
b)a power brownout.The motor will overamp when operating on a low voltage.
c)an excessively high loop temperature when heating.Since the motor is cooled by refrigerant gas,the gas leaving the evaporator must be relatively cool.
a)in small units which do not have an antirecycle timer,and immediate restart after shutdown.If the refrigerant pressure across the compressor has not bad time to equalize,the compressor may not be able to start.This can be caused by thermostat tampering or a power disruption.
b)a power brownout.The motor will overamp when operating on a low voltage.
c)an excessively high loop temperature when heating.Since the motor is cooled by refrigerant gas,the gas leaving the evaporator must be relatively cool.
High pressure cut out
Shuts-off the compressor whenever the discharge pressure becomes too high.This is most commonly caused by:
a)a lack of water flow in the cooling mode
b)a lack of airflow in the heating mode,usually due to a clogged filter
c)an excessively high loop temperature
a)a lack of water flow in the cooling mode
b)a lack of airflow in the heating mode,usually due to a clogged filter
c)an excessively high loop temperature
Low temperature cut out
This safety is used to keep the water-side from freezing. Faults are most commonly caused by:
a)a lack of water flow in the heating mode
b)water that is too cold in the heating mode
c)a lack of airflow in the cooling mode, usually due to a clogged filter When the freezestate trips when heating,some units will switch to cooling and operate for about a minute before shutting down.
This is to ensure that any ice or slush built up in the refrigerant-to-water heat exchanger is fully melted.
a)a lack of water flow in the heating mode
b)water that is too cold in the heating mode
c)a lack of airflow in the cooling mode, usually due to a clogged filter When the freezestate trips when heating,some units will switch to cooling and operate for about a minute before shutting down.
This is to ensure that any ice or slush built up in the refrigerant-to-water heat exchanger is fully melted.
Low pressure cut out
Shuts off the compressor whenever the suction pressure becomes too low.This safety can be tripped by:
a)a low refrigerant charge
b)an excessively cool loop temperature when cooling.The resulting low condensing pressure may not be
sufficient for the required pressure drop through the expansion device.
c)an excessively low entering air temperature when heating for the same reason as above.
a)a low refrigerant charge
b)an excessively cool loop temperature when cooling.The resulting low condensing pressure may not be
sufficient for the required pressure drop through the expansion device.
c)an excessively low entering air temperature when heating for the same reason as above.
Key features and benefits
Smart Control and management
1.Powerful control board for the management of water heating including controlling water pump and other relative equipments.
2.An inbuilt temperature or temperature/humidity sensor
3.Universal design, able to be used in a range of Tongyi Heat Pump products, The variable voltage output can also be connected for the modulating control of the Tongyi heat pump in residential and light commercial applications.
4. Stable and tough design integrating anti-corrosion, anti-humidity, anti-rust and anti-electromagnetic interference.
2.An inbuilt temperature or temperature/humidity sensor
3.Universal design, able to be used in a range of Tongyi Heat Pump products, The variable voltage output can also be connected for the modulating control of the Tongyi heat pump in residential and light commercial applications.
4. Stable and tough design integrating anti-corrosion, anti-humidity, anti-rust and anti-electromagnetic interference.
Protection and intelligent error report
Completed self protection and self diagnosis functions make maintenance and repairing faster. High and low refrigerant pressure switch protection with lockout relay. Thermal motor protection against overheating.
Flexible and cascade control
Modularized and cascade control make it flexible and easier to build a high efficient system for different applications.
High efficiency compressor
Efficient compressor provides reliable services and energy savings by scroll compressor technology
Optimized heat exchanger
1.Improved hydrophilic aluminum fin in evaporator guarantees optimized heat transportation with a longer life time
2.High heat exchange rate and avoid refrigerant leakage to water double wall condenser rated for potable water heating.
2.High heat exchange rate and avoid refrigerant leakage to water double wall condenser rated for potable water heating.
Corrosion-proof
Painted aluminum or stainless steel cabinet provides superior protection against corrosion. with Optional corrosive duty package：The corrosive duty package includes a 316 stainless steel cabinet and a phenolic coating applied to the cooling coil and blower housing for superior corrosion protection which is recommended for the installations nearby the seacoast.
Accurate flow control
Reliable EEV is adopted for more accurate refrigerant flow control against varying condensing pressure
Cloud control
Monitor and control the units easily anywhere anytime
Specification
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SX180S B
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SX400S B
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SX600S B
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Dimension L×D×H(mm)
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859*829*853
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900*983*1000
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1040*1200*1700
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Heating Capacity(KW)
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20
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40
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60
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Power input(KW)
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4.3
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9.1
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13.9
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COP
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4.65
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4.40
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4.32
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Voltage (V)
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380
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380
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380
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Input current(A)
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7.3
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16.2
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24.8
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Refrigerant
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R417A
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R417A
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R417A
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Compressor
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copeland
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copeland
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copeland
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Max output water temperature (℃)
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60
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60
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60
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High pressure(Gas)(Mpa)
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≤3.0
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≤3.0
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≤3.0
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Circulation water（m³/h）
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3.1
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6.9
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10.3
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Connector size
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DN40 External thread
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DN40 External thread
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DN50 External thread
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Digital description of Tongyi
USD
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Annual sales amount
all around the world
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+
Professional Engineers
Responsible for new products development
0
Years warranty
For core components and accessories
0
hours
Long running test
before every shipment
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