1、目錄CATALOGUE一、 機(jī)組外觀和機(jī)組結(jié)構(gòu).1Unit outlook and structure二、 系統(tǒng)流程圖.3system flow chart三、 機(jī)組安裝.4Installation四、 調(diào)試.18Test五、使用.20Operation六、 維護(hù)和保養(yǎng).25Maintenance七、 運(yùn)行范圍.26Run scope八、 簡易故障處理.27Trouble disposal一、機(jī)組外觀和機(jī)組結(jié)構(gòu)Unit outlook and structure1、 機(jī)組外觀2、機(jī)組結(jié)構(gòu)Unit structure二、系統(tǒng)流程圖 system flow chart1、 風(fēng)冷冷風(fēng)型/電加熱型空調(diào)

2、機(jī)工作原理Working principle of the air-cooled cooling or electric heating air conditioner2、 熱泵型空調(diào)機(jī)工作原理 Working principle of the heat-pump air conditioner三、機(jī)組安裝1. 安裝空間：Installation space 確保機(jī)組安裝位置周圍有足夠的空間以備操作、維修之用，同時(shí)也要保證氣流循環(huán)暢通，不受阻礙并且沒有短路。安裝空間尺寸參見下圖。 In order to ensure operation and maintenance convenient，

3、enough space around the units must be ensured while installingAir must flow freely without resistance and short circuitInstallation space size can be consulted as follows型號(hào) modelABC3HP、5HP、8HP、10HP50050012.5HP、15HP50080020HP、24HP500800100025HP、30HP、40HP、50HP5001000100060HP、70HP、80HP、100HP、110HP10001

4、5001500注:假設(shè)A為無連接管側(cè),B為連接管側(cè)。Note: assume A not to be side of connecting pipe, B to be side of connecting pipe.2. 安裝定位 Installing location應(yīng)考慮電氣接線、室內(nèi)外機(jī)連接、排水管布置以及風(fēng)管連接的方便。確保地面平整、水平，機(jī)組安裝后傾斜度不應(yīng)超過下圖要求。Must count for the convenience of electric wiring, connection of indoor and outdoor unit, arrangement of dra

5、in pipe and air duct connection while installation. Ensure ground to be flat and level, after installing, unit gradient can not exceed the limit showed in following chart.地基應(yīng)有足夠的強(qiáng)度。機(jī)組重量和地腳螺釘固定位置參見以下各圖。Foundation should be intended enough. Unit weight and the foot screw fixed position is showed as fo

6、llowing charts其它注意事項(xiàng)： Other attentions(1) 室內(nèi)外機(jī)組安裝位置要選擇適當(dāng)，必須安裝在無日光照射、遠(yuǎn)離熱源的地方。Indoor and outdoor unit must be installed in the place which has no sunlight illuminated and far from heat resource.(2) 室外機(jī)組安裝應(yīng)考慮對(duì)建筑物外觀的影響。The influence on the building appearance must be considered when install the outdoor

7、unit.(3) 安裝安置應(yīng)盡量選在管路短、彎曲少、高差小的地方。Installation should be situated in places where the pipe is short, bends are few and the height difference is little.(4) 室外機(jī)組的位置不在地面或樓頂平面而需懸掛在墻壁上時(shí) , 應(yīng)制作牢固可靠的支架。While outside unit is not installed on the ground or the top plane, but hung on the wall, it must use the f

8、irm support.(5) 室外機(jī)組出風(fēng)口不應(yīng)對(duì)準(zhǔn)強(qiáng)風(fēng)吹的方向，上面不應(yīng)有障礙物。若頂部空間不夠時(shí)，需安裝彎曲型導(dǎo)風(fēng)管將風(fēng)導(dǎo)向遠(yuǎn)處，以避免氣流短路而影響機(jī)組性能。The outside units air outlet couldnt be in the direction of strong breeze , and there wont be obstacles above itIf the above space is not enough, please install bending type wind duct to guide the wind to distance , a

9、voiding that unit performance will be influenced by air flow short (6) 側(cè)出風(fēng)型室內(nèi)機(jī)安裝在空調(diào)房內(nèi)時(shí)，除考慮安裝方便外，還要保證氣流合理，送風(fēng)均勻。While side air outlet model indoor units installation in the air conditioner room, except considering convenient installation, it should ensure air flow reasonably and air supply equably.(7)

10、 任何情況下，室內(nèi)機(jī)組都不能安裝在室外。In any case, the inside unit should not be installed outside.3. 安裝 Installation示例圖 demonstrationa. 搬運(yùn)、吊裝 Handling, hoisting機(jī)組可用鏟車或吊車運(yùn)輸，吊裝時(shí)應(yīng)如下圖進(jìn)行操作。 Unit can be transported by forklift or hoist, please operate as the following chart while hoist.注意事項(xiàng) Attentions(1) 吊裝前應(yīng)檢查機(jī)體吊環(huán)是否旋緊，纜繩

11、是否安裝牢固。Before hoisting, should ensure the organism rings tightened, the hawsers fastened.(2) 搬運(yùn)或吊裝過程中，應(yīng)保持機(jī)體平衡，切勿突然升高、降低或劇烈晃動(dòng)。During handling or hoisting, keep organism balance, dont rise, drop suddenly or sway violently.b. 管路布置 Pipes arrangement連接管路的布置須根據(jù)現(xiàn)場(chǎng)情況參照以下原則進(jìn)行：Connection pipe arrangement must

12、 according to the sites condition and refer to the following principles:(1) 盡可能縮短連接管長度，最好在5m以內(nèi)Try to shorten the length of connection pipe, best within 5m.(2) 盡可能減小室內(nèi)外機(jī)高度差。 Try to shorten the altitude difference between indoor and outdoor units.(3) 盡可能減少連接管路的彎頭數(shù)。 Try to reduce the joints amount used

13、 for connection if possible.(4) 連接管長超過20米時(shí)，需檢查系統(tǒng)的潤滑油是否足夠，必要時(shí)，需適當(dāng)增加。 When pipe longer than 20m, inspect lube whether it is enough, add it when necessary.當(dāng)室內(nèi)外機(jī)高度不同時(shí)，參照下圖進(jìn)行管路布置。If indoor and outdoor units altitudes are difference, arrange the pipeline according to following graph 液管（即細(xì)管）liquid pipe（thi

14、nner pipe）- - - - - - 氣管（即粗管）gas pipe（thicker pipe）室外機(jī) Outdoor unit室內(nèi)機(jī) Indoor unit室內(nèi)機(jī)Indoor unit氣管存油彎Oil-kept bend of gas pipe每46米設(shè) 1個(gè)存油彎.每46米設(shè) 1個(gè)存油彎.c. 室外機(jī)置于室內(nèi)機(jī)之下（壓縮機(jī)在室內(nèi)機(jī)）Outdoor unit lower than indoor unit, compressor is in inside unit. b. 室外機(jī)置于室內(nèi)機(jī)之上Outdoor unit higher than indoor unit。室內(nèi)外機(jī)連接管的高差、

15、管長及彎頭數(shù)按下表限制：室外機(jī)型號(hào)Outdoor unit modelSW-3NSW-(4X2)NSW-3RNSW-5NSW-(5X2)NSW-5RNSW-8NSW-(6X2)N SW-8RNSW-10NSW-10RNSW-13NSW-13RNSW-15NSW-15RNSW-20NSW-20RNSW-25NSW-25RNSW-30NSW-30RNSW-60N SW-70N SW-80N最大管長Max.pipe length20203030405050505050最大高度差Max.Altitude doffs.10101515202525252525最多彎頭數(shù)(90)Max.elbow.mete

16、r6688101212121212Altitude difference, pipe length and elbows amount of connection pipe of indoor and outdoor unit defined by following table：c. 連接步驟 Connection steps(1) 工具準(zhǔn)備 Preparing tools一切工具、備件、材料必須準(zhǔn)備齊全，如沖擊鉆、真空泵、氮?dú)馄?、配管工具、制冷劑壓力表等。All tools, reserve parts and materials must be prepared all in readi

17、ness, for example：Percussion drill, vacuum pump, nitrogen cylinder, pipe-fit tools, refrigerant gauge and so on(2) 室內(nèi)機(jī)安裝 Indoor unit installation參照前述要求安裝固定室內(nèi)機(jī)。Install and fix indoor unit according to above demands(3) 室外機(jī)安裝 Outdoor unit installation參照前述要求安裝固定室外機(jī)。Install and fix outdoor unit according

18、 to above demands(4) 打墻孔 Drill holes in wall在墻底部打圓孔或長方形孔，以穿過連接管、排水管、電線等。Drilling round or square holes in the bottom wall to let connecting pipe, water drain pipe and wires cross(5) 管路連接 Connecting pipes申菱牌風(fēng)冷系列空調(diào)機(jī)管路連接方式有兩種：小于或等于LF/LFD29N以及LF/LFD58N、LF/LFD85N機(jī)組采用喇叭口連接，其它類型機(jī)組采用焊接方式連接。連接時(shí)須注意以下幾點(diǎn)：There

19、are two methods to connect pipes of “SHENLING”air-cooled series air conditioner: Flared-tube connection is for units smaller than LF/LFD29N and LF/LFD58N/ LF/LFD85N. And welding connection is for the other units. The following points must be paid attention to while connecting;喇叭口連接方式Way of flared-tu

20、be connection(a) 盤管展開時(shí)采用反繞的方法緩慢進(jìn)行，避免折扁銅管。Unfold coiled pipe slowly by way of twisting in reverse, so as not to bend the copper tube flatted.(b) 管道的彎曲加工用彎管器進(jìn)行，彎曲半徑較大時(shí)也可用手緩慢地彎曲。彎曲半徑過小，容易造成管子損壞，彎曲半徑限度要求不小于銅管外徑的6倍。Use tube bender to bend machinery pipe or bend by hand when the radius of curvature is lar

21、gerIf the radius of curvature is too little, pipes may be miner than 6 times of the pipes external diameter.(c) 松開角閥連接處螺母，卸下連接管堵頭，在喇叭處涂上冷凍油，快速地將兩者連接起來（要求5分鐘內(nèi)），喇叭口位置對(duì)好之后，再用板手緊固螺母。Loosen nut and remove the plug from eagle valve, then smear the flared with refrigerant oil and connect the two parts toge

22、ther quickly (in 5 minutes), when the flares seat well, then tighten the nut using spanner.(d) 當(dāng)所需要管長超過5m時(shí)，需按要求加長銅管并補(bǔ)充制冷劑If connecting pipe is longer than 5m, increase the length of the copper pipe and add refrigerant.焊接方式: Way of welding connection(a) 采用硬釬焊連接所有接頭。Connect all joints by braze welding

23、.(b) 銅管切割后須清除毛刺及管內(nèi)異物。Get rid of the bur and foreign matter in pipe after cutting the copper tube.(c) 焊接時(shí)管內(nèi)必須充氮。Fill tube with nitrogen when welding.(6) 充氮試漏 Charge with nitrogen to have leakage test 銅管連接之后，從接頭處制冷劑充注口（喇叭口連接式在角閥上，焊接式須打開所有室內(nèi)側(cè)球閥，再從室內(nèi)機(jī)制冷劑充注口充氮）充入氮?dú)庵?.5Mpa，用肥皂液檢查連接管各接頭處是否有漏，若有漏，接頭必須重新處理。注

24、意：切勿用氧氣或乙炔氣試漏！After connecting copper pipe, charge with nitrogen to the pressure of 1.5MP through charging valve at the joint (the charge valve of flared connecting type is at the eagle valve, but as to welding connecting type, all indoor side ball valve must be opened, then charge nitrogen through

25、the charge valve of indoor unit). And using soapsuds to check every joint of the connection pipe to see if there is any leakage or not, if it is, the joint must be dealt with again CAUTIONS: Be sure not to do leakage test with oxygen or acetylene.(7) 空氣排除 Air discharge充氮試漏之后，必須排除管道內(nèi)空氣。因系統(tǒng)空間較大, 建議采用真

26、空泵抽除管道內(nèi)空氣, 不要采用放制冷劑方法來排除管道內(nèi)空氣。否則由于排除不凝性氣體不徹底會(huì)造成系統(tǒng)高壓升高和制冷性能下降。Air in pipes must be removed after leakage test. As the system space is a little large, vacuum pump is suggested to draw air from the pipe, not to get rid of the air by charging pipe with refrigerant, or because incondensable gas can not b

27、e exhausted, the high pressure of system will rise and refrigerant rating performance descend.(8) 真空檢漏 Vacuum leakage test抽真空至管內(nèi)絕對(duì)壓力1300Pa, 保持5分鐘壓力無變化, 否則接頭處有漏須重新處理。抽真空時(shí), 喇叭口連接式只需抽除管道內(nèi)空氣, 焊接式必須開啟室內(nèi)側(cè)所有球閥后(因室內(nèi)機(jī)充有少量氮?dú)?所以必須連同室內(nèi)機(jī)一起抽,但室外機(jī)球閥不能開), 再在空調(diào)機(jī)制冷系統(tǒng)的高低壓兩端制冷劑充注口分別抽除空氣, 不能只抽一端。Achieve the vacuum in pi

28、pe (absolute pressure 1300Pa) and keep it for 5 minutes without pressure changing, and if it changed, there must be a leakage in joints, so the joints must be dealt with again. Only the air in pipe need to be vacuumed for flared connecting type unit. But for welding connecting type unit all indoor s

29、ide ball valves must be opened (because indoor unit has been charged with a little nitrogen, pipe must be vacuumed with indoor unit together, but ball valves of outdoor side can not be opened), the draw air separately from the charging valve of the refrigeration system in air conditioner, when vacuu

30、ming , pay attention not to vacuum one side only.(9) 放出制冷劑 Let refrigerant out空調(diào)機(jī)出廠時(shí)制冷劑貯存在室外機(jī)內(nèi)。放出制冷劑時(shí)應(yīng)先打開制冷劑液路兩個(gè)角閥 (或球閥), 再打開另兩個(gè)角閥(或球閥)。開啟角閥時(shí)須注意, 必須擰開至上死點(diǎn)并略擰緊, 再蓋上防漏蓋帽。球閥只需將閥桿轉(zhuǎn)90,(閥桿上有箭頭指示流動(dòng)方向)再蓋上防漏蓋帽。所有閥都打開之后, 須將原“全關(guān)”掛牌換為“全開”掛牌。Refrigerant is stored in outdoor unit when air conditioner leaving fact

31、oryOpen eagle valve ( or ball valve), which is thinner pipes valve, in refrigerant liquid pipe of every system first when letting refrigerant out, then open other two eagle or ball valve While opening eagle valve, the valve rod must be opened to the top dead center and tighten a little, then leak pr

32、oof cup must be fitted. For ball valve, turn the rod to the eagle of 90(there is arrow indicating turning direction) and fit the leak proof capAfter all valve opened, change the hanging plate “Close all”to“Open all”(10) 復(fù)查接口泄漏 Check again the joints leakage閥門開啟之后，用鹵素檢漏儀或肥皂液在接口處復(fù)查有無泄漏。After valves op

33、ened, use halide leak detector or soapsuds to check the joints(11) 電線連接 Connecting electrical wires用多芯電纜線連接室內(nèi)外機(jī)接線端子。Use multiple core cable with every conductors section being to connect indoor and outdoor terminals注意：每臺(tái)室外機(jī)必須按序號(hào)和相對(duì)應(yīng)的制冷系統(tǒng)的電路部分進(jìn)行連接, 切勿接錯(cuò), 否則空調(diào)機(jī)不能正常運(yùn)行。Note：Each outdoor unit must connec

34、t with electrical branching of corresponding refrigeration system according to the number, if in disorder, the air conditioner cannot operate normally(12) 包扎 Wrapping up連接銅管包好保溫層之后 (僅對(duì)焊接方式而言, 喇叭口方式銅管上已套好保溫管), 將銅管、電線等用塑膠帶妥善包扎并固定好。After connection copper pipe binding up the thermal insulation (only fo

35、r welding way connection for flared tube connection, the pipe has been cased with insulation layer) Then bind up pipes, wires, etc. with plastic tape and tighten them4. 制冷劑補(bǔ)充 Supplementing refrigerant當(dāng)連接管路超過5m時(shí), 必須補(bǔ)充制冷劑(R22), 請(qǐng)用戶安裝時(shí)參照下表進(jìn)行補(bǔ)充。停機(jī)時(shí)補(bǔ)充制冷劑可從角閥冷劑充注口充入, 開機(jī)時(shí)補(bǔ)充制冷必須從壓縮機(jī)吸氣口(即低壓端，壓縮機(jī)較粗的接管) 冷劑充注口吸

36、入,此時(shí)冷劑罐不宜倒置, 以保證制冷劑以氣體方式吸入壓縮機(jī), 避免壓縮機(jī)發(fā)生液擊而受到損壞。When connecting pipe is in excess of 5m, refrigerant (R22) must be supplemented while user installingPlease refer to following table. When unit is not working, refrigerant can be charged from charge plug at angle valve, if the air conditioner is operatin

37、g, refrigerant must be charged from the plug of compressors drawing side(lower pressure side, thicker connecting pipe of compressor),at this moment the refrigerant can be drawn into compressor as gas, for preventing the compressor from damaging because of liquid shocking室內(nèi)外連接管長每增加1m時(shí)制冷劑補(bǔ)充量表Table of

38、the quantity of supplementary refrigerant when connecting pipe in different length室外機(jī)型號(hào)SW-3NSW-(4X2)NSW-3RNSW-5NSW-(5X2)N SW-5RNSW-8NSW-(6X2)N SW-8RNSW-10NSW-10RNSW-13NSW-13RNSW-15NSW-15RNSW-20NSW-20RNSW-25NSW-25RNSW-30NSW-30RNSW-60N SW-70NSW-80N每米管長制冷劑量kg0.110.110.180.180.260.260.370.370.511.021.31

39、制冷量修正系數(shù) Correcting coefficient of cooling capacity當(dāng)室內(nèi)外機(jī)連接管長過長或兩機(jī)高低差過大時(shí)會(huì)影響制冷能力, 制冷量的修正系數(shù)參見下表。Cooling capacity will be influenced when connecting pipe of indoor and outdoor unit is too long or the altitude difference of the two units is too largeThe correcting coefficient is listed in following table制

40、冷量修正系數(shù)correcting coefficient of cooling capacity等效總長equivalent total length5m10m15m20m25m30m35m40m45m50m高低差 Altitude difference0m1.00.980.960.940.920.900.880.860.840.82(室內(nèi)機(jī)低于室外機(jī)時(shí)）5m1.00.970.950.930.910.890.870.850.830.81(When indoor10m0.960.940.920.900.880.860.840.820.80Unit higher than outdoor15m0.

41、930.910.890.870.850.830.810.79Unit or indoor20m0.900.880.860.840.820.800.78Lower than outdoor unit)25m0.870.850.830.810.790.77高低差 Altitude difference0m1.00.980.960.940.920.900.880.860.840.82(室內(nèi)機(jī)高于室外機(jī)時(shí)）5m1.00.980.960.940.920.900.880.860.840.82(When indoor10m0.980.960.940.920.900.880.860.840.82Unit lo

42、wer than outdoor15m0.960.940.920.900.880.860.840.82Unit or indoor20m0.940.920.900.880.860.840.82Higher than outdoor unit)25m0.920.900.880.860.840.82注：等效總長指直管總長再加上彎頭及存油彎的等效長度之和。彎頭及存油彎的等效長度參見下表。Note：The “equivalent total length”is the straight tubes total length added with equivalent of the elbows and

43、 the oil-kept bends. Equivalent length of the elbows and the oil-kept bends refers to following table彎頭和存油彎等效長度表(m) Table of equivalent length of the elbows and the oil-kept bends (m)氣體連接管外徑mmGas connection pipes external diameter彎頭Elbow存油彎 Oil-kept bends15.88(5/8)0.32.019.05(3/4)0.352.422.2(7/8)0.4

44、03.028(9/8)0.53.735(11/8)0.554.142(13/8)0.604.85. 排水管安裝 Installing drainpipe接水盤排水孔和底盤排水孔接頭如下：Joints of drain pan weep hole and chassis weep hole seen as following： LF/LFD/RF8NLF/LFD68N /RF67N內(nèi)螺紋接頭G1ALF/LFD/RF8NLF/LFD58N /RF67N internal screw G1ALF/LFD85N/RF83NLF/LFD305外螺紋接頭G1ALF/LFD85N/RF83N LF/LFD3

45、05external screw G1A排水管安裝如圖所示.Installing the drain pipe as following graph注意事項(xiàng)：Attention排水管走管位置始終不能高過達(dá)室內(nèi)機(jī)排水孔位置, 同時(shí)室內(nèi)機(jī)另一側(cè)排水孔必須 用絲堵堵死。冷凝水排至下水道路中需加設(shè)U形彎(見圖)以防臭氣吸入空調(diào)機(jī)內(nèi)。The drain pipe cannot be higher than the water outlet hole of indoor unit, and the other sides drain water hole must be blocked with scre

46、w stopper. If condensed water is to be drained to sewer, the drain pipe must have U shaped bend so as to prevent bad smell from going into air conditioner.6、電氣接線Electric wiring接線示意圖wiring demonstration正確的接線按下圖所示：The correct wiring is showed in the below chart.breakerIndoor unita. 斷路器選用 Breaker selec

47、tion機(jī)外接線最關(guān)鍵是斷路器的選用。斷路器又稱自動(dòng)空氣開關(guān), 主要是在電路條件下不頻繁接通和分?jǐn)嗉爱?dāng)電路中發(fā)生超限的過載、短路及失壓時(shí)能自動(dòng)分?jǐn)嚯娐分?。斷路器分框架式和塑料外殼式兩大類?？照{(diào)機(jī)安裝一般使用DZ系列塑料外殼式斷路器, 用作機(jī)組電源的接通和分?jǐn)嘀谩he key to the out-of unit wiring is the breaker selectionBreaker, which is also named automatic air-breaker switch, can be used to engage in unfrequented connection a

48、nd breaking normal circuit conditionIn addition, breaker can auto-break the circuit while it happened too much overload, short-circuit and under tensionBreaker can be sorted into two types：frame type and plastic shell typeGenerally, the air conditioner installation adopts DZ series shell breaker, in

49、 order to connect or break the unit power斷路器選擇的一般原則如下：General principles of breaker selection：(1) 斷路器的額定電壓不低于線路的額定電壓。Breakers rated voltage mustnt lower than the circuit rated voltage(2) 斷路器的額定電流不低于通過它的計(jì)算電流。Breakers rated current mustnt lower than its computing current which through it(3) 斷路器的類型應(yīng)符合安

50、裝、設(shè)備性能和操作方式的要求。Breakers type must accord with the installation, plant performance and operations demandb. 電源導(dǎo)線選用 Selection of supply conductor導(dǎo)線用于連接電路, 選用一般原則如下：Conductors are used to connect the circuit, selection principle as follows：(1) 滿足發(fā)熱條件 Satisfy heating term導(dǎo)線在通過計(jì)算電流時(shí), 其發(fā)熱溫度不能超過允許最高溫度。While

51、 the computing current pass through the conductor, its temperature should not be higher than maximal temperature allowed(2) 電壓損耗 Voltage loss導(dǎo)線通過計(jì)算電流時(shí), 其產(chǎn)生的電壓損耗不應(yīng)超過正常允許的電壓損耗值。While the computing current pass through the conductor, the voltage loss should not be higher than ordinary voltage loss allo

52、wed(3) 經(jīng)濟(jì)電流密度 Economical current denser按規(guī)定的經(jīng)濟(jì)電流密度選擇導(dǎo)線截面, 以滿足節(jié)約有色金屬和降低電能損耗的需要。Conductors section area should be selected according to assigned economical current so as to meet the need for both saving nonferrous metal and reducing the electrical energy loss(4) 機(jī)械強(qiáng)度 Mechanical intention導(dǎo)線截面不能低于 最小允許截面

53、數(shù)值, 以滿足機(jī)械強(qiáng)度的要求。Conductors section area should not be less than allowed so as to satisfy the mechanical intention demand(5) 工作電壓 Operating voltage導(dǎo)線的絕緣水平必須滿足其正常的工作電壓的要求。The insulation of conductor must meet the demand of normal operating voltage注：Note(1) 工作電流為標(biāo)準(zhǔn)工況下的數(shù)值。Operating current is the data in

54、 standard condition(2) 空調(diào)所用中線(N線)截面數(shù)對(duì)所有機(jī)型均可選用2.5mm2銅芯絕緣軟線。Insulated flexible cord with copper core of 2.5mm2 section can be selected as central line (N line) of air conductor, to all of the models(3) 數(shù)據(jù)為銅芯線數(shù)據(jù), 建議不要使用鋁芯線。The data in table correspond to copper-core conductor, not to use aluminum-core conductor(4) 供電線路超過20米時(shí), 應(yīng)考慮增大線徑, 以減小電壓損耗。If supply line exceeds 20 meters , section area of the conductors should be made large so as to reduce voltage loss(5) 室內(nèi)外機(jī)連接線一律選用多芯電纜線。Multiple core cable can be