Low Ambient Temperature Air Source Heat Pump

UnitFeaturesandFunctions

Thestandard "lowambient temperature"air source heat pumpadopts specialized compressors,which can be divided into two categories:scroll and screw type.It adopts modular control to give options of single control ormultiple modules control.It is flexible fordifferentapplications of cooling and heating at very lowambienttemperature - 2 5 ~ - 3 5 ^ { \circ } C toproduce 5 0 ^ { \circ } C hotwater,availablehotwatertemperaturerange:35- 5 0 ^ { \circ } C heating and cooling function.

The low ambient temperature air source heat pump,

LowAmbientTemperatureAirSourceHeatPump

adoptstwo-stagecompressiontechnology，specially launchedby H.Stars Group forcentral heatingincold region.Itcanbewidelyused inresidentialareasand commercialbuildingswith heatingareaof2ooo-10000 m ^ { 2 } ,especially suitable for replacement of buyer in the old cities.The COP is high,produce 6 0 ~ ^ { \circ } C hot water during - 3 5 ^ { \circ } C ambient temperature,and 7 0 ~ ^ { \circ } C hot waterwhen obtained at - 2 5 ^ { \circ } C ambient temperature, which isthe perfectsolution forboilerreplacement.

Designed For Extremely Cold Regions

Stable operation at * 3 5 ^ { \circ } { C } ambient temperature;Twostage compression average efficiency can reach level 1of national standard.

ScrewTypeTwo-stage Compressor

Turth two-stage compression,with strong inter-stage gassupplement,the comprehensive energy efficiency of thewhole heating seasonin the extremely cold region is2.8,energy saving.With low temperatureand strong heat technology,theheatingcapacityisreducedwith the decrease of ambient temperature at - 3 5 ^ { \circ } { C } ~ 4 3 ^ { \circ } { C }

OutletWaterTemperatureRange

Highest outlet water temperature up to 8 5 ^ { \circ } C ,Suitable for renovationproject forboiler and radiator,andotherspecial project.

SplitTypeDesign (Optional)

Mainframe isseparated from the fin heat exchanger to meet thespecial requirementsof environment.

Cloud Service (Optional)

Online real-time monitor to check operation data at anytime and anywhere.

Multiple Four-Way Valve Combination Design HFC-134a,Greento theenvironment

Improve the traditional design,during the defrosting process,theunit cancontinue towork without shutdown, greatly improve the actual operating efficiency.

HFC-134arefrigerant,DPO is O,no damage to ozone layer and meets the LEED green building standard.

Double Stage Compressor

1.Compared with the two units system and cascade system,designed for large differential pressure andlarge pressure ratio,it has the advantagesof small sizesof installation area and simplecontrol.Italso has theadvantagesof high efficiency and high reliability compared with single stage compressor.
2.Patent design of high-pressure unloading slider:High-pressure automatic unloading VI block structure.Pure mechanical structure design,no additionally parts such as solenoid valves,simple and low starting power.
3.Excellent motor cooling design ensures high efficiency of the compressor,so that the compressor can operate in a very wide range and ismore adaptable.
4.Built-in economizer filter,check valve,shut-off valve,to achieve reliable protection of the compressor and simplify user system configuration.

Double Stage Compressor

Enhanced Vapor Injection Compressor

Designed for all-season heating purpose,from - 3 0 ^ { \circ } C to 4 3 ^ { \circ } C ： Innovative“scroll heating”technology is adopted to heating in cold winter with hot water temperature up to 6 0 ^ { \circ } \mathsf { C } .It increases the heating capacity by 4 0 % compared with traditional heat pump technology.

Enhanced Vapor Injection Compressor

LowAmbientTemperature Heat Pump Compressor

1.Designed for cold areas,the cooling and heating dual function compressor has a minimum suction saturation temperature is （204号 - 4 0 ^ { \circ } \dot { C } and a maximum suction saturation temperature is 1 5 ^ { \circ } \mathsf { C } ： 2.Large heating capacity,suitable for central cooling and heating projects,reduce the initial investment and minimize the installation space.
3.With high efficiency oil separator to reduce the oil concentration of the system to increase the efficiency.
4.Double electronic expansion valve is adopted to control the unitbody temperature to ensure the safety and the efficiency, low-temperature heating efficiencyofishigherthan the small compressor unit.
5.No need external oil cooling device,system is simple and reliable.

LowAmbientTemperature HeatPump Compressor

Fin Type Heat Exchanger

1.Special design forlow temperature,effectively extend the heating lifecycle of the equipment.
2.Stainless steel frame design,good anti-corrosive performance, strong and durable.
3.Special coated aluminum sheet, durable and difficult to frost.

Anti-corrosion Fin Heat Exchanger(Self-manufactured)

Shell And Tube Condenser

1.Water through tube,easy to maintain and easy to apply for mechanically clean. 2.Adopt 1 . 1 {mm } enhanced copper tube,self-developed core components to ensure the production process. 3.Qualified pressure vessel design and production.

Self-manufactured Shelland Tube Condenser

Product Features And Functions

TheHMI directly displays the fault content to cooperatewith thesimpleoperation interfacetotimely feedbackvarious maintenanceinformation.

The control system can be connected to the user'scentral control system(BMS) tomonitorthechillerrunningsituation freely.

Protection control on the external power supply system with Over-voltage,under-voltage,three-phase unbalance,and lackphase protection.

And thechillerhasbuilt in more than 3O protection functions toprovide comprehensive protection for the safe operation of the unit.

User connection points is reserved to provide cloud services.

Network of multiple units (module systems)

Control center

With plastic shell and installed standard mounting

Integrated electronic expansionvalvewith moduledrive into one control system.

Three-phase voltage and current are displayed timelyand highly integrated with the controller.

Mainboard can be networked, group control and single control free switching.

With phase sequence protectorto better protect the unit. Save cost and high integration of external phase sequence protector. High reliability and saving after-sales cost.

The simulation accurately detects the running current and voltage of the compressor to protect the compressor in time,improve the servicelifeof thecompressorand reducetheafter-salesservice cost.

Standard MODBUS interface,zero cost access to building management control system to meet engineeringrequirements.

An innovative device LAN interface connects local devices into a network at zero cost to optimize equipment operation,save energy and improve equipment lifespan.

Integrated expert electronic expansion valve drive,more stable control. Saving space and assembly labor cost.

Analog quantity pressure detection, accurate pressure protection.

Muti-language display,convenient for unit debugging, maintenance.Easy touse,direct display unit operation condition, failure conditions,built-in operating instructions.

The control equipment makes different operation strategies according to the detected information,and has perfect protection functionto ensure the stableoperationoftheunitunderbad Working conditions.In low or high ambient temperature and other bad conditions,the unit can still ensure stable operation.

Digital power supply and motor protection device,digital display three-phase voltage and three-phase motor current.

Advanced electronic expansion valve control system,refrigerant systemismorestable.

Intellgent sense if the contactor is normal,to avoid abnormal damage to the compressor.

Integrated electronic expansion valve drive and control algorithm, no expansion.

Integrated MODBUS communication protocol, convenient extension,easyaccesstothecloud server.

Intelligent pre-protection with detection data,intelligent unloading while it reachescritical value.

Classifiedalarm,accordingto the fault level,intelligent Shut Down,corresponding to the compressor,onlyalarmand other protective actions,comprehensive protect unit safe operation.

Function Content (Standard Control)

1.Support USB flash drive upgrade and USB flash drive download history operation data and fault content.
2.Support English and other language switching.
3.Support the timing seting.
4.Support MODBUSRTU communication protocol.
5.Support Cloud service,can control the unit by website or APP.

Function Content (PLC Control)

1.Support OPC and MODBUSRTU protocols. 2.SupportUSB flash drive /Micro SDupgrade and USB flash drive history data and faultcontent download.

3.Support English and other language.

4.Customized screen display can be modified according to different request.

SIEMENS SMARTLINE ScrewTypeWater-oooledChiller Wateroutlet 000.0 Chilleoutlet 000.0
Low-temperatureoo0.0 Chillereturn 000.0 Compressor Stop Cooling 000.0 T
Chilled waterpump wateroutlet
Cooling waterpump Start Stop
Menu Settings Status Data Fault 1/ setting Record checking

Main Components of Electrical Cabinet

1.Color touch screen 5.Controller fuse protection 8.Power supply connector
2.Emergency stop button 6.Unit control processor 9.Compressor contactor
3.Control circuit transformer 7.Control signal I/O connector 10.Compressor current transformer
4Switch nower nf contrnller

Standard Control Section

Function Display (Part)

Fault Display (Part)

PLC Control

Function Display (Part)

Fault Display (Part)

Protection System&Emergency Response

LowAmbientTemperatureAirSourceHeatPump

Protection System

PowerMotorProtection

Reversed-phase Protection,Lack-phase Protection,Over-high/ Over-low voltage Protection,Over-current Protection,Threephase current stableprotection,three-phasevoltage balanc protection.

System Pressure Protection

Over-high/Over-lowrefrigerant pressure protection.

Pump Protection

Check the waterflow when the pump is running;protect the pump from overload and overcurrent.

Water flow swith wiring is reserved.

FrostProtection

After the unit turn off,the unit will automatically start up,when system water temperature is so low that forecastingwill reach icing.Anditwillstopautomaticallywhen thewatersystem temperature is back to the safety zone.

Over-high/Over-lowRefrigerant CircuitPressure Protection

Detecting excessive compressor motor temperature and excessive motor current protection.

System Temperature Protection

Over-high/Over-low temperature of system refrigerant circuit Protection,and Over-high/Over-lowtemperatureof system waterflow protection.

Emergencyandmaintenance testing

Standarduserequirements

The unit needs to be power on all the time throughout the heating season.

The entire heating season needs to ensure that the water flow of the unit is continuously.

PowerFailure

When the environment is below 0 ^ { \circ } C ,it is necessary to empty the waterin the pipeline in time to prevent the icing of the pipeline and the risk of freezing the pipe.

Timely draining the water from the pipeline to prevent icing; Before using it again,power on the preheating compressor's refrigerationoil12hoursinadvance.

Out Of Service

Fault Shutdown

Please contact the factory after-sales technicians in time;

If the unit cannot be used, the water in the pipeline should be drained in timewhen the ambient temperatureis below 0 ^ { \circ } \mathsf C ：

EmergencyDrainage

Whenan emergency situation requires power failure maintenance,please open the system-specific drain valve,and return to the power-on state after the repair is completed.

Auxiliary Heating

When the temperature condition cannot be increased due to theextremeworkingconditionorfailure,theauxiliaryelectric heating is temporarilystarted,and theauxiliary electric heating isturnedoffwhenthenormal stateisrestored.

Air Source Single-compressor Two-stage Unit Technical Parameters R134a (Heating)

Refrigerant: R134a Powersupply:380V-3Ph-50Hz

2.Hot water temperature range: 5 5 ^ { \circ } C ~ 8 5 ^ { \circ } C ·

3.Ambient temperature range: 3 0 ^ { \circ } \mathsf { C } ~ 3 0 ^ { \circ } \mathsf { C }

4.Specifications and dimensions will be subject to improvement without notice.

Air Source Single-compressor Two-stage Unit Technical Parameters R22 (Heating)

Refrigerant: R22 Power supply:380V-3Ph-50Hz

2.Hot water temperature range: 4 5 ^ { \circ } C ~ 6 0 ^ { \circ } C ·

3.Ambient temperature range: 3 0 ^ { \circ } C ~ 3 0 ^ { \circ } C ·

4.Specifications and dimensions will be subjectto improvement without notice.

Air Source Screw Type Heat Pump Technical Parameters(Cooling & Heating)

Refrigerant:R22 Powersupply: 380V-3Ph-50Hz

Note

1.Nominal coolingcapacity_reference:EnvironmentalDB/WB temperature 3 5 ^ { \circ } C 1 2 4 ^ { \circ } C ,chilled water inlet/outlet temperature 1 2 ^ { \circ } C 1 7 ^ { \circ } C · foulingfactor 0 . 0 { i } 8 { m } \dot { 2 } . ^ { \circ } C /KW;

:.Nominal heating capacity reference:Environmental DB/WB temperature - 1 2 ^ { \circ } C 1 - 1 4 ^ { \circ } C ,Hot water inlet/outlet temperature 3 9 ^ { \circ } C 1 4 1 ^ { \circ } \mathsf { C } ·
3.Chilled water temperature range: 5 - 2 0 ^ { \circ } C ·
4.Hot water temperature range: 3 5 - 4 5 ^ { \circ } C ·
5.In cooling working condition,ambient temperature range 2 0 ~ 4 3 ^ { \circ } C ; In heating working condition,ambient temperature range: - 2 5 ~ 4 3 ^ { \circ } C ·
6.Specifications and dimensions will be subject to improvement without notice.

Air Source Heat Pump Unit Technical Parameters (Heating)

Refrigerant:R22 Powersupply:380V-3Ph-50Hz

Note

1.Nominal cooling capacity reference:Environmental DB/WB temperature - 1 2 ^ { \circ } C （204号 1 - 1 4 ^ { \circ } C ,hot water inlet/outlet temperature 5 0 ^ { \circ } \mathsf { C } （204号 1 5 5 ^ { \circ } C ; foulingfactor 0 . 0 1 8 { m } 2 . ^ { \circ } C KW;

2.Ambient temperature range: 2 5 ^ { \circ } C （20 - 3 5 ^ { \circ } C ·
3.Specificationsand dimensionswillbe subject to improvement without notice.

Air Source Single-compressor Two-stage Unit Technical Parameters R134a (Heating)

Refrigerant: R134a Power supply:460V-3Ph-60Hz

2.Hot water temperature range: 5 5 ^ { \circ } C ~ 8 5 ^ { \circ } C ·

3.Ambient temperature range: 3 0 ^ { \circ } \mathsf { C } ~ 3 0 ^ { \circ } \mathsf { C } ·

4.Specifications and dimensions will be subject to improvement without notice.

Air Source Single-compressor Two-stage Unit Technical Parameters R22 (Heating)

Refrigerant: R22 Power supply: 460V-3Ph-60Hz

2.Hot water temperature range: 4 5 ^ { \circ } C ~ 6 0 ^ { \circ } C ·

3.Ambient temperature range: 3 0 ^ { \circ } C ~ 3 0 ^ { \circ } C ·

4.Specifications and dimensions will be subjectto improvement without notice.

Air Source Screw Type Heat Pump Technical Parameters(Cooling & Heating)

Refrigerant: R22 Powersupply:460V-3Ph-60Hz

1.Nominal cooling capacity reference:Environmental DB/WB temperature 3 5 ^ { \circ } C 1 2 4 ^ { \circ } C ,chilled water inlet/outlet temperature 1 2 ^ { \circ } C 1 7 ^ { \circ } C ·
fouling factor 0 . 0 1 8 { m } \bar { 2 } . ^ { \circ } C /KW;
2.Nominal heating capacity reference:Environmental DB/WB temperature - 1 2 ^ { \circ } C 1 - 1 4 ^ { \circ } C ,Hot water inlet/outlet temperature 3 9 ^ { \circ } C 1 4 1 ^ { \circ } \mathsf { C } ·
3.Chilled water temperature range: 5 - 2 0 ^ { \circ } C ：
4.Hotwater temperature range: 3 5 - 4 5 ^ { \circ } C ：
5.In cooling working condition,ambient temperature range : 2 0 ~ 4 3 ^ { \circ } \mathsf C ; In heating working condition,ambient temperature range: - 2 5 - 4 3 ^ { \circ } C ·
6.Specifications and dimensions will be subject to improvement without notice.

Air Source Heat Pump Unit Technical Parameters (Heating)

Note

1.Nominal cooling capacity reference: Environmental DB/WB temperature - 1 2 ^ { \circ } C （204号 1 - 1 4 ^ { \circ } C ,hot water inlet/outlet temperature 5 0 ^ { \circ } \mathsf { C } （204号 1 5 5 ^ { \circ } C ; fouling factor 0 . 0 1 8 { m } 2 . { } ^ { \circ } C /KW;
2.Ambient temperature range: 2 5 ^ { \circ } C （204号 - 3 5 ^ { \circ } C ·
3.Specificationsand dimensionswill besubject to improvementwithout notice.

Heating Capacity Curve

Unit Dimensions(Single Compressor Two-stages)

Unit Dimensions(Screw Type Unit)

Unit Dimensions(Screw Type Unit)

Unit Dimensions(Scroll Type Unit)

Split Unit

Refrigerant: R22 Power supply:380V-3Ph-50Hz

IndoorUnit

Maincomponents including compressor, condenser, fourwayvalveandcontrol boxare installed in the machine room,whichismoreconvenientforoperation and maintenance.

OutdoorUnit

Fintype heat exchangers,fans and other components asoutdoor units.The exterioris more compact than the integratedone.Theinstallationismoreflexible,andit caninstall on the roof,outdoorandotherplaces.

VFD Heat Pump

VFDHeatPumpadoptsavariablefrequencydriver motor toachieve variable frequency operation of the compressor.Significantly improves the energy efficiencyof thechilleratpartial load.

Energy Efficient

Adopt international brand variable frequency drive technology,integrated part load value(IPLV) up to8.

Small Starting Current

VFDwater chiller include soft starter to reduce the impact of starting current;

TheVFD has its own DCreactorto minimize harmonic interference;

Optional low-harmonic.filter.VFD inputpowermeets theIEEE-519 specification for harmonic distortion with harmonic filter over-temperature protection and capacitance switching.

PreciseTemperatureControl

The water temperature control within ± 0 . 3 ^ { \circ } { C } to maintain a high-precision temperature control standard.

Theunit can reacha higher full load coefficient of performance (COP) and integratedpart loadvalue (IPLV).

StableAndReliable

TheVFD heat pumpunit adopts themotor speed to control the output load toachieve true steplesscontrol to improve compressorreliability.

Independed coolingforVFD to make sure operateat low temperature,more stable.

Comparisonstartingcurrent curve between VFDand StarDelta

Heat ExchangerTube

CondenserHeatExchangeTube

Evaporator Heat ExchangerTube

ImportantNotice:

Heatexchanger isthe keycomponents of the chiller unit,whose technologydirectlyaffects thequalityof theproduct.Also,the heat exchange tube,which is theonly component of the heat exchanger in contact withthe ambient,closelyaffects the life of the unit.

Cloud Service (Remote Monitor)

CentralA/Ccloudservicesystem

The thickness and material of the heat exchange tubeare very important.Customers can choose the suitable material and thickness of heat exchanger tube according to the air and water quality.

Cloudservicevalue:
Remote control adjustment
Remote monitor
Remote upgrade
Fault warning
Remotediagnosis
Product distribution management
Historical dataanalysis

Electric Heater

When the outdoor temperature is very low,the evaporation temperature of the air source heat pumpmust be very low, therefore the compressor operates ata high compression ratio,which inevitably leadstoadecreasein thevolumetric efficiency and the indication efficiency of the compressor. In thisway,the heatingcapacityand heating coeficient oftheheatpumpwill decrease.Abetterway is to add auxiliary heat source equipment,and an electric heateris idealauxiliary heat source.

2

Specificationsand models of electric device parameters

AlternativeList

Wiring Diagram

Foundation Base Diagram

Installation Notes

1.Inordertopreventtheairretuofthefinheatexchangerandavoidthemalfunctionoftheunit,therecommendedminimum spacingoftheunitisasfolls:2metersfromthedewallad2metersfromhefrontallTheeightspacelaves10mees,te spacingbetweeothrunitsis2meters;Outdorinstalltionheightis05metersto.8metrsfrotheground.Ifteabovesacing is not guaranteed,the performance oftheunit maybeaffected,orarunningstop failuremayoccur;

2.There should be no more than one wall above the top of the unit;

3.Thefoundatioouldsuesiettrgth,ichcaneadeofforedonceteoelndteootalioof the basic plane is not more than 0 . 1 %

4.Configure the matching damper according to the operating weight of the unit.

H.Stars Group

H.Stars(Guangzhou) RefrigeratingEquipmentGroup Ltd. establishedin1992,inEconomic&TechnologicalDevelopment ZoneofGuangzhou,China,composedof8subsidiariesto provideone-stopsolutionto HVAC customers, specializing inR&D,oogalloA grows,H.Starsgroup expandsits businessglobally and has soldto53differentcountries.H.StarsGroupisawardedwith "NewandHighTechnologyEnterpriseinGuangzhou"andhas become the training baseof many universities both inChinaand abroadvia technologycooperation.

H.Stars group suppliesan extensive lineofCommercial andIndustrial Energy Saving HVAC products including: AirCooledChiller,WaterCooledChiller,IndustrialChiller, CentrifugalChiller,Magneticoilfreecentrifugalchiller,MultifunctionChiller,HotWaterUnit,HeatRecoveryUnit,Heat PumpUnit,ondensingUnit,GlycolChiller,hellandube HeatExchanger,AirHandlingUnit,FanCoilUnit,Cooling Tower,etc.all typeofHVAC products.

H.Stars Group hasbeendedicated in qualityand innovation and istechnically strongincommercial and industrialapplicationasaHVACmanufacturer.Apartfrom obtainingplentyofenergy-savingproductpatents,H.Stars GrouphasachievedCEcertificationsforPressure Vesseland standardchillers,BR1,ASME,IO9001:2000,ISO14001:2004 and other certifications.

Agood reputationofH.StarsGroup hasbeen builtand deliversa fullHVACservicetocustomersworldwide.Our productsarewidelyappliedinindustriesforcoolingofLaser generators,Weldingelectrodes,Cutingmachines,Electric sparkmachines,Extrusion process,Hydraulic System, Electroplating,Ultrasonicleaning,onlatingfilm,lectronic facility,Electrical appliancecomponents,CompressedGas Dehumidification,Dairy and Beverage Cooling processing, Pharmaceutical and Biological products,Medical equipment, GlassCoating,TemperedGlassandCultivationSeaFood.

H.StarsGroupwill continueto develop energy saving and environmental friendlyequipmenttocreate"TheEfficiency Planet"asourobligation.Byfocusingoncustomers'needsand wantsinordertocontributemoreourpotentials,fromnowon, H.Stars Group will hand in hand with you to bea shining star in the foreseeable future.

H.Stars (Guangzhou) Refrigerating Equipment Group Ltd

Address:No.1Guoyuan4thRoad,Guangzhou Economic&Technological Development Zone,HuangPuDistrict,Guangzhou,China ZipCode510530