Comparetion vrv daikin & york digital scroll r1 v.2003
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![April, ‘09
York Digital Scroll
[YDS]](https://image.slidesharecdn.com/comparetionvrvdaikinyorkdigitalscrollr1v-2003-130522121833-phpapp01/85/Comparetion-vrv-daikin-york-digital-scroll-r1-v-2003-1-320.jpg)
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Comparetion vrv daikin & york digital scroll r1 v.2003
- 1. April, ‘09 York Digital Scroll [YDS]
- 2. WhyWhy DaikinDaikin promotes inverter technologypromotes inverter technology 1982 : Daikin started Launching of VRV first in the world AND have used inverter technology since early days andhave used inverter technology since early days and has gained much trust.has gained much trust. 2009 : Daikin still use Inverter for new model
- 3. How does it work?How does it work? Mechanical Compressor discharge volume adjustment Loading/Unloading system Inverter system Electrical ConfidentialConfidential To release some portion of refrigerant gas mechanically without compression. Digital scroll compressor used in YDSDigital scroll compressor used in YDS To change compressor speed electrically. Technology used in VRVTechnology used in VRV
- 4. Comparison of compressorsComparison of compressors TypeType Digital scrollDigital scroll DC inverter scrollDC inverter scroll Capacity controlCapacity control Loading/Unloading systemLoading/Unloading system Inverter systemInverter system EfficiencyEfficiency FullFull capacitycapacity [100%Loa[100%Loa ding]ding] GoodGood (because of low(because of low compression loss)compression loss) ○○ High efficiency.High efficiency. ○○ MediumMedium capacitycapacity PoorPoor (because of big(because of big compression loss)compression loss) △△ ExcellentExcellent ◎◎ LowLow capacitycapacity Continuous operationContinuous operation control is rathercontrol is rather difficult (Especially indifficult (Especially in heating)heating) ×× ExcellentExcellent ◎◎ ConfidentialConfidential
- 5. Comparison of compressorsComparison of compressors TypeType Digital scrollDigital scroll DC inverter scrollDC inverter scroll CapacityCapacity controlcontrol Loading/Unloading systemLoading/Unloading system Inverter systemInverter system NoiseNoise Very noisyVery noisy (due to solenoid valve(due to solenoid valve switching noise)switching noise) ×× Noisy at high speedNoisy at high speed operation.operation. △△ Weight SizeWeight Size Bigger size and heavier.Bigger size and heavier. ○○ Smaller size and lighterSmaller size and lighter ◎◎ ConstructionConstruction complicated mechanismcomplicated mechanism (solenoid valve and(solenoid valve and control pressure piping)control pressure piping) ○○ Simple mechanism withSimple mechanism with inverter controllerinverter controller ○○ ConfidentialConfidential
- 6. INVERTER control.INVERTER control. Low efficiency because of constant speed.Low efficiency because of constant speed. Slow response because of solenoid valves.Slow response because of solenoid valves. Heavy mechanical burden.Heavy mechanical burden. Troublesome complicated mechanism.Troublesome complicated mechanism. Solution: smoothSolution: smooth and variableand variable compressor speed.compressor speed. Target: Smooth control of refrigerant flow to follow actual load variationTarget: Smooth control of refrigerant flow to follow actual load variation with as little inertia as possible.with as little inertia as possible. ConfidentialConfidential Negative point of unloading system.
- 7. Solution the case of inverter.Solution the case of inverter. Target: Smooth control of refrigerant flow to follow actualTarget: Smooth control of refrigerant flow to follow actual load variation with as little inertia as possible.load variation with as little inertia as possible. Motor speed direct control.Motor speed direct control. Quick response by electronics control.Quick response by electronics control. Simple mechanism.Simple mechanism. Benefits of inverterBenefits of inverter Perfect solutionPerfect solution ConfidentialConfidential
- 8. 0 5 1 0 1 5 20 25 30 35 VRV YDS Starting electrical current levelStarting electrical current level TT No rush currentNo rush current ConfidentialConfidential Low electric facility cost.Low electric facility cost.
- 9. Inverter Scroll Compressor with variable RPM. Normal Scroll Compressor with Load/Unload Function Load High Low 16 s 100% 0% 4 s York Digital Scroll [YDS]
- 10. Advantage of CDU betweenAdvantage of CDU between VRVIII&YDSVRVIII&YDS Save EnergySave Energy Save SpaceSave Space ElectricalElectrical Noise of CDUNoise of CDU PipingPiping High Static FanHigh Static Fan Easy Installation and MaintenanceEasy Installation and Maintenance
- 11. Save EnergySave Energy COP of DaikinCOP of Daikin VRVIIIVRVIII
- 12. COP Performance on Full Load [100%] 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 TYPE OF CDU COP YDS VRV
- 13. COP Performance on Patial Load [70%] 0.00 1.00 2.00 3.00 4.00 5.00 6.00 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 TYPEOF CDU COP YDS VRV
- 14. COP Performance on Patial Load [50%] 0 1 2 3 4 5 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 TYPE OF CDU COP YDS VRV
- 15. COPPerformanec [10 hp] 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 50 60 70 80 90 100 LOAD [%] COP YDS VRV
- 16. Case Study Energy SavingCase Study Energy Saving DESCRIPTION DAIKIN " V R V system" YDS (Baht) (Baht) 1 INITIAL COST 4,160,000 2,912,000 ( Machine, Equipment & System ) 2 OPREATING COST / YEAR 2.1 Electical Expense 784,896 1,049,798 (Avg.0.8~1.1 Kw/TR X 64 TR at 70 % Usage x15Hrs/Day x 365 Days/Yr x 3.0 ฿/kWHr) (Avg.1.0~1.2 Kw/TR X 125 TR at 70 % Usage x15Hrs/Day x 365 Days/Yr x 3.0 ฿/kWHr) Sum 2.1~2.3 784,896 1,049,798 3 Life Time (Years) 20 15 (Because this system is scrol compressor and inverter system) Daikin Save Electric 265,000 Baht/YearDaikin Save Electric 265,000 Baht/Year Pay Back Period 4.7 YearsPay Back Period 4.7 Years
- 18. Single (HP)Single (HP) ５５ ８８ １０１０ １２１２ １４１４ １６１６ １８１８ －－ －－ Double (HP)Double (HP) ２０２０ ２２２２ ２４２４ ２６２６ ２８２８ ３０３０ ３２３２ ３３ ４４ ３３ ６６ Triple (HP)Triple (HP) ３８３８ ４０４０ ４２４２ ４４４４ ４６４６ ４８４８ ５０５０ ５５ ２２ ５５ ４４ Normal Type 25models Wide & Affluent Model Range Single (HP)Single (HP) 88 1010 1212 1414 1616 -- -- -- -- Double (HP)Double (HP) 1818 2020 2222 2424 2626 2828 3030 3232 -- Triple (HP)Triple (HP) 3434 3636 3838 4040 4242 4444 4646 4848 -- Multi (HP)Multi (HP) 5050 5252 5454 5656 5858 6060 6262 6464 -- Normal Type 29models York Digital Scroll
- 19. Compare of Volume HP 8 10 18 （ Vol.m3 ） 5 0.82 1.20 1.59 HP 14-16 18 （ Vol.m3 ） 8-12 1.28 1.87 3.73 York Digital Scroll 161412 x 5
- 20. HP 22 24 26 28 30 32 34 （ Vol.m3 ） 20 2.78 3.19 36 HP （ Vol.m3 ） York Digital Scroll 20-32 34-36 5.603.73 Compare of Volume
- 21. HP 40 42 44 46 48 50 52 （ Vol.m3 ） 38 4.38 4.78 54 HP 50-54 （ Vol.m3 ） 7.46 York Digital Scroll 38-48 5.60 Compare of Volume
- 22. HP （ Vol.m3 ） 56-64 HP 56-64 （ Vol.m3 ） 7.467.46 Compare of Volume York Digital Scroll
- 23. Installation space comparisonInstallation space comparison Space 47% Space saved47% Space savedW L Installation: installation spaceInstallation: installation space (10HP unit)(10HP unit) York Digital ScrollYork Digital Scroll DaikinDaikin LL WW surfacesurface LL WW surfacesurface 16301630 830830 1.351.35 930930 765765 0.7170.717 ConfidentialConfidential
- 24. Noise of CDUNoise of CDU
- 25. NOISE OF CDU York Digital Scroll [YDS] 6262626262626262626260606060585858585858 ---- YDSYDS 64646262626262626363606060606060585857575454VRV IIIVRV III 2626242422222020181816161414121210108855 capacitycapacity [hp][hp] PRODUCTPRODUCT
- 26. NOISE OF CDU York Digital Scroll [YDS] 64646464646464646464646464646464626262626262YDSYDS 67676767676765656464656566666565636365656464VRV IIIVRV III 48484646444442424040383836363434323230302828 capacitycapacity [hp][hp] PRODUCTPRODUCT
- 27. NOISE OF CDU York Digital Scroll [YDS] 6565656565656565656565656565YDSYDS --------------------686867676767VRV IIIVRV III 64646262606058585656545452525050 capacitycapacity [hp][hp] PRODUCTPRODUCT 6565
- 28. Rated Noise Level (8 HP) Rated Noise Level (8 HP) 57 dB(A) 58 dB(A) DAIKIN VRV Digital Scroll
- 29. Electrical for BreakerElectrical for Breaker
- 30. MCA[Amp] MFA[Amp] Type of CDU VRV YDS VRV YDS 8 hp 18.5 20.4 25 40 10 hp 21.6 20.4 25 40 12 hp 22.7 20.4 25 40 14 hp 31.5 32.9 35 40 16 hp 31.5 32.9 35 40 37.5 %37.5 % MCA ; Minimum Circuit Amps [A] MFA ; Maximum Fuse Amps [A]
- 31. PipingPiping
- 32. VRV better than YDSVRV better than YDS Daikin VRV III SystemDaikin VRV III System York Digital Scroll SystemYork Digital Scroll System Connectable No.Connectable No. of IUof IU 64 Units64 Units 64 Units64 Units Refrigerant Piping LengthRefrigerant Piping Length 1000 m1000 m 200-300 m200-300 m Level differenceLevel difference 50-90 m50-90 m 50 m50 m Max Pipe Length between FCU&CDUMax Pipe Length between FCU&CDU 165 m165 m 150 m150 m Different Ventical Indoor UnitDifferent Ventical Indoor Unit 15 m15 m 15 m15 m Improved Specs. for Large Building UseImproved Specs. for Large Building Use
- 33. Increased Ref. piping length 165 90 15 150 50 15
- 34. High Static FanHigh Static Fan
- 35. No 1 High Static FanNo 1 High Static Fan 78.4 Pa E.S.P.78.4 Pa E.S.P. Suitable for floor bySuitable for floor by floor installationfloor installation
- 36. Easy installation and maintenance 1 Auto test Back-up function3 2 Auto storage of operating data
- 37. Indoor Addressing Indoor Addressing Automatic Manual Requires DIP Switch Setting DAIKIN VRV Digital Scroll 1. Automatic test
- 38. Automatic operation data storage of last 3 minutes just before the trouble 3 min. 2. Automatic storage of operating data Service checker to identify location of problem and cause of malfunction Implementation of measures to eliminate cause of malfunction Operating MalfunctionMalfunction The operation data can be retrieved by the service checker. In case of malfunction, the system is storing the operation data for the last 3 min of operation
- 39. 3.Back up Operation AlarmTroubleTrouble INVINV INVINV Operation INVINV Troubl e L5L5 L5L5 Operated by R.C. again INVINV INVINV INVINV OperationOperationStopStop ONON ONON Back-UpBack-Up
- 40. Advantage of FCU betweenAdvantage of FCU between VRVIII&YDSVRVIII&YDS Daikin have more line upDaikin have more line up [New] Middle/High ESP Duct Type[New] Middle/High ESP Duct Type [New] Cassette Round Flow[New] Cassette Round Flow Noise of FCUNoise of FCU
- 41. Daikin have more line upDaikin have more line up
- 42. Indoor units line UP 11 types York Digital Scroll [YDS] 79 models 10 types 49 models Big four Way CassetteBig four Way Cassette Compact Four Way Cassette Duct Type Low Static Pressure Duct Type 10HP Mid&High Static Pressure Duct Unit Wall Mounted Type Ceilling & Floor Type High Static Pressure Duct Type Slim Duct Type One Way Cassette Type
- 43. Middle/High ESP Duct TypeMiddle/High ESP Duct Type Daikin Only OneDaikin Only One
- 44. Special Feature for Installer ! Middle/High ESP Duct Type FCUMiddle/High ESP Duct Type FCU 14 Steps Airflow Adjustment !! By Remote control
- 45. [New] Ceilling Mounted Cassette[New] Ceilling Mounted Cassette Round FlowRound Flow Daikin Only OneDaikin Only One
- 46. TypeType INDEXINDEX 2525 3232 4040 5050 6363 8080 100100 125125 Ceiling MountedCeiling Mounted Cassette TypeCassette Type FXFQ-PVEFXFQ-PVE NewNew NewNew NewNew NewNew Ceiling Mounted Cassette Type (Round Flow)Ceiling Mounted Cassette Type (Round Flow) •Market expansion by launching Daikin unique product.Market expansion by launching Daikin unique product. •Complete shift from Multi-flow to Round-flowComplete shift from Multi-flow to Round-flow ( VRV R-410A series)( VRV R-410A series) NewNewNewNewNewNewNewNew The Aim of development / INDEX RangeThe Aim of development / INDEX Range IDU FXFQ25-125P
- 47. Noise of FCUNoise of FCU
- 48. NOISE OF FCU York Digital Scroll [YDS] Big four Way Cassette TypeBig four Way Cassette Type Compact Four Way Cassette Type Ceiling mounted Cassette Type capacitycapacity [hp][hp] PRODUCTPRODUCT 2020 2525 31.2531.25 4040 5050 62.562.5 8080 100100 125125 200200 250250 VRV IIIVRV III 30/2730/27 30/2730/27 31/2731/27 32/2732/27 33/2833/28 36/3136/31 39/3339/33 42/3642/36 YDSYDS 41/38/341/38/3 41/38/341/38/3 44/42/344/42/3 44/42/344/42/3 46/44/446/44/4 46/44/446/44/4 48/46/448/46/4 48/46/448/46/4 [Round & Muilti Flow]
- 49. York Digital Scroll [YDS] Ceiling mounted Cassette Type [Double Flow] NOISE OF FCU capacitycapacity [hp][hp] PRODUCTPRODUCT 2020 2525 31.2531.25 4040 5050 62.562.5 8080 100100 125125 200200 250250 VRV IIIVRV III 32/2732/27 34/2834/28 34/2834/28 34/2934/29 34/2934/29 37/3237/32 39/3439/34 44/3844/38 YDSYDS
- 50. York Digital Scroll [YDS] Ceiling mounted Cassette Corner Type One Way Cassette Type NOISE OF FCU capacitycapacity [hp][hp] PRODUCTPRODUCT 2020 2525 31.2531.25 4040 5050 62.562.5 8080 100100 125125 200200 250250 VRV IIIVRV III 38/3338/33 38/3338/33 40/3440/34 42/3742/37 YDSYDS 42/40/342/40/3 42/40/342/40/3 47/45/447/45/4 47/45/447/45/4 48/45/448/45/4
- 51. York Digital Scroll [YDS] Slim Ceiling Mounted Duct Type Low Static Pressure Duct Type NOISE OF FCU capacitycapacity [hp][hp] PRODUCTPRODUCT 2020 2525 31.2531.25 4040 5050 62.562.5 8080 100100 125125 200200 250250 VRV IIIVRV III 33/2933/29 33/2933/29 33/2933/29 34/3034/30 35/3135/31 36/3236/32 YDSYDS 42/40/342/40/3 42/40/342/40/3 47/45/447/45/4 47/45/447/45/4 47/45/447/45/4
- 52. York Digital Scroll [YDS] Duct Type Ceiling Mounted Built-in NOISE OF FCU capacitycapacity [hp][hp] PRODUCTPRODUCT 2020 2525 31.2531.25 4040 5050 62.562.5 8080 100100 125125 140140 -- VRV IIIVRV III 37/3237/32 37/3237/32 38/3238/32 38/3238/32 41/3641/36 42/3542/35 43/3743/37 43/3743/37 46/4146/41 YDSYDS 41/38/341/38/3 41/38/341/38/3 41/38/341/38/3 43/40/343/40/3 43/40/343/40/3 46/44/446/44/4 46/44/446/44/4 48/46/448/46/4 48/46/448/46/4 49/46/449/46/4
- 53. York Digital Scroll [YDS] Ceiling mounted Duct Type High Static Pressure Duct Type NOISE OF FCU capacitycapacity [hp][hp] PRODUCTPRODUCT 2020 2525 31.2531.25 4040 5050 62.562.5 8080 100100 125125 140140 200200 250250 VRVVRV IIIIII 48/44/4248/44/42 48/44/4248/44/42 53/50/4753/50/47 53/50/4753/50/47 53/50/4753/50/47 YDSYDS 33/31/2933/31/29 33/31/2933/31/29 34/32/3034/32/30 39/37/3539/37/35 41/39/3741/39/37 42/40/3842/40/38 43/41/3943/41/39 43/41/3943/41/39 44/42/4044/42/40 48/4548/45 48/4548/45
- 54. York Digital Scroll [YDS] Ceiling Suspended Ceilling & Floor Type NOISE OF FCU capacitycapacity [hp][hp] PRODUCTPRODUCT 2020 2525 31.2531.25 4040 5050 62.562.5 8080 100100 125125 140140 -- VRV IIIVRV III 36/3136/31 39/3439/34 45/3745/37 YDSYDS 43/41/343/41/3 43/41/343/41/3 43/41/343/41/3 43/41/343/41/3 45/43/445/43/4 45/43/445/43/4 47/46/447/46/4 47/46/447/46/4
- 55. York Digital Scroll [YDS] Wall Mounted Type Wall Mounted Type NOISE OF FCU capacitycapacity [hp][hp] PRODUCTPRODUCT 2020 2525 31.2531.25 4040 5050 62.562.5 8080 100100 125125 200200 250250 VRVVRV 35/2935/29 36/2936/29 37/2937/29 39/3439/34 42/3642/36 46/3946/39 YDSYDS 46/44/446/44/4 46/44/446/44/4 46/44/446/44/4 46/44/446/44/4 48/46/448/46/4 48/46/448/46/4 50/49/450/49/4 50/49/450/49/4
- 56. York Digital Scroll [YDS] Floor Standing & Concealed F Floor Standing & Concealed Floor Standing NOISE OF FCU capacitycapacity [hp][hp] PRODUCTPRODUCT 2020 2525 31.2531.25 4040 5050 62.562.5 8080 100100 125125 200200 250250 VRV IIIVRV III 35/3235/32 35/3235/32 35/3235/32 38/3338/33 39/3439/34 40/3540/35 YDSYDS 42/39/342/39/3 42/39/342/39/3 42/39/342/39/3 46.43/346.43/3 46/43/346/43/3
- 57. NOISE OF FCU ~4-13 dB Daikin Lower than YDS
- 58. Control System between VRVIII&YDSControl System between VRVIII&YDS
- 59. Malfunction Codes Malfunction Codes 58 Comprehensive 42 Basic Only DAIKIN VRV Digital Scroll
- 60. Controls Controls Advanced user friendly Touch Screen (i-Touch) with superior functions with programmable schedule and interlocking. York Intelligent Network Air- condition control & monitor system DAIKIN VRV Digital Scroll i-Touch
- 61. Stand Alone Controls Stand Alone Controls I-Touch can be interfaced via internet and accessed from a remote PC (web browser enable) Not possible to be accessed via internet. INTERNET INTERNET DAIKIN VRV Digital Scroll
- 62. Light Fan Pump Fire alarm Electricity measurement Daikin Central Air Conditioning System DAM602B51 Ai unit Dio unit DIII-NET DIII-NET DIII-NET DIII-NET Sub PC Ethernet Web Access Intranet/Internet Web Access Via Internet Air Conditioning Network Service System (Optional Maintenance Service) VRV System HRV Local monitoring & control Malfunction report by E-Mail Ⅲ BMS
- 63. Engineering & Service TeamEngineering & Service Team MORE THAN 20 YEAR EXPERIENCEMORE THAN 20 YEAR EXPERIENCE
- 64. Thank you for your attention
Editor's Notes
- How does it change the refrigerant flow? It changes the emission quantity of the refrigerant from the compressor. ① Compression is controlled ②Rpm is controlled In order not to compress, refrigerant gas is allowed to escape through things such as the solenoid valve. Because of the changes in the rotary speed of the compressor motor, the flow is changed. どのようにして冷媒循環量を変えるか？ 圧縮機からの冷媒の吐出量を変化させる。 ① 圧縮を制御する ②回転数を制御する 圧縮しないように電磁弁などで冷媒ガスを逃がす。 圧縮機モーターの回転速度を変化させることで、流量を変化させる。
- In the case of: Digital Scroll DC Inverter Scroll Full capacity High efficiency due to low compression loss High efficiency despite more compression loss due to high revolution rate, because DC motor is very efficient Medium capacity Low efficiency due to high compression loss Both compressor and motor have small loss and are efficient in energy conservation. Low capacity Compression loss is quite high because continuous Motor efficiency decreases but the DC motor’s efficiency decrease is small. Thus operation is difficult （ especially in heating) efficiency is achieved. デジタルスクロール ＤＣインバータースクロール 最大能力時 圧縮ロス少なく高効率 高回転による圧縮ロス多いがＤＣモータ効率が高いので高効率 中間能力時 圧縮ロス多く、効率低い 圧縮、モータ共にロス少なく、高効率省エネ 最小能力時 圧縮ロス極めて多く連続運転が難しい。 モータ効率低下するが、ＤＣモーターは効率低下が少なく、高効率 （特に暖房運転）
- Digital Scroll DC Inverter Scroll Noise As low as Standard Type because of a fixed revolution rate. Our scrolls are designed to be low noise and high revolution. Weight Depends on the maximum ability because of a fixed revolution rate. Smaller, light-weight mechanism because max ability is gained by higher revolution. Structure Complicated mechanical structure Simple mechanical structure デジタルスクロール ＤＣインバータースクロール 騒音 回転数一定なのでメカ騒音は標準機並み 高速回転する当社スクロールは低騒音設計のため静粛 重量 回転数一定なので最大能力に合わせた母体サイズ 最大能力は高速回転で得るため、小さい母体サイズ、軽量 構造 基本的に複雑なメカ構造 シンプルなメカ構造
- Refrigerant flow Control with Load-Sensitive and High Response Speed Because the motor works with a constant speed, it is not efficient from an energy-saving viewpoint. Because of the solenoid valve, response is not instantaneous. Not smooth resulting in heavy mechanical burden. Mechanically complicated →cause of breakdown. 負荷に応じた滑らかで、応答速度の速い冷媒流量制御 モーターが一定速で回るため省エネ的見地から好ましくない 電磁弁による制御のため要求に即座に答えられない。 滑らかでなく、機械的に大きな負荷がかかる。 機械的に複雑になる→故障の原因
- It is possible to control the motor speed directly. With electronic control it respond to request instantaneously. Simple structure - Compressor is the only mechanical part . モーターの回転を直接制御する事が出来る。 電子制御のため要求に即座に答えることが出来る。 機械的にはコンプレッサーのみで単純な構造である。
- Inverter technology allows soft start control, which reduces starting current level and reduces installation costs. But digital compressor cannot achieve such a control, as compressor is starting at full load. インバーター圧縮機は回転を少しずつ上げるソフト起動で、起動電流を少なくできるが、デジタルコンプレッサーはフルロードで起動するため、起動電流が非常に大きい。
- Outstanding feature of VRVIII is its wide and affluent model range. Not only increase the capacity up to 54 HP with 2 HP increment, but also we provide 2 series, compact and light weight Normal and high performance Energy saving Type to satisfy various customer’s demands. ＶＲＶⅢは５馬力～５４馬力の広い能力レンジをほぼ２馬力きざみでカバ－するとともに、お客様の要望に応じて コンパクトで軽い標準シリ－ズと、省エネを重視したＨタイプの２つのシリ－ズを用意しております。
- As a new base model, 18 HP is added and system capacity is increased up to 54 HP in one system. システムを構成するベ－スユニットに１８馬力の室外機を加えることにより、 最大５４馬力の大容量を実現しました。
- To cover large capacity, maximum piping length is extended up to 165 m and total length 1000 m. ＶＲＶⅡでは最大配管長１５０ｍ，総配管長５１０ｍであったものが今回ＶＲＶⅢでは 最大配管長１６５ｍ，総配管長１０００ｍと許容冷媒配管を大幅に延長しました。
- VRVIII also have excellent function in case of trouble. Operation data such as compressor speed, high and low pressure and running current of last 5 minutes before the trouble are stored to find the cause of the trouble. So you can take countermeasure quickly. 故障時には故障発生前５分間の運転デ－タ（圧縮機の回転数，高圧，低圧，等）を記憶していますので、 原因究明が早く迅速な対応が出来ます。
- For plural units system, back up operation is provided for emergency operation. In case of trouble, alarm is indicated on a remote controller. Then the troubled unit is stopped and the other units are operated continuously by a remote controller. 複数室外機のシステムの場合、リモコンスイッチで故障した機械を停止し、 残りの機械の運転を続けられます。
- We offer you 11 types and 79 models for various usage and interior design. また室内機は、部屋のインテリア，用途に応じて使い分けられるようカセット，ダクト，壁掛形等１１種類形状、 ７９機種を用意しております。
- Operation is very easy. All you have to do is to touch eyecon by a pen.
- Thank you for your attention.