Trane Variable Refrigerant Flow System Mini Outdoor Unit Series Installation and Maintenance Manual
Contents
1. Dimensions WxHxD Weight WxHxD Shipping weight Unit model number in mm Ib kg in mm Ib kg Sues uius 220 5 100 0 231 5 105 0 4TVH0048B100NB 37 940 x 47 6 1210 x 13 330 m Sees 33 21308 4TVH0053B100NB 227 1 103 0 238 1 108 0 Dimensional Drawing Unit inch mm 37 01 940 12 99 330 S R o D G 2 N 3 MJ lt iu N g o 4 o N off lt P o gt 14 17 360 a Q N st eS eo a 15 12 384 S o a i e Dimension Size 3 4 ton 5 8 15 88 5 ton 3 4 19 05 3 8 9 52 0 79 20 0 87 22 2 x 3 1 36 34 5 x 3 No Item 1 Gas refrigerant pipe Liquid refrigerant pipe Condensate drain holes Communication cable holes uw A WwW nN Power cable holes VRF SVN33A EN 1 in u N o N 34 84 885 Preparing for Installation Maximum Quantity of Indoor Units by Mini Outdoor Unit Capacity To prevent reducing indoor unit capacity the sum capacity of indoor units connected to a mini outdoor unit should be no greater than the capacity of the mini outdoor unit Refer to Table 2 Table2 Maximum number of indoor units determined by mini outdoor unit capacity Mini outdoor unit Mini outdoor unit Maximum quantity of indoor units Total capacity of connected capacity connected to a mini indoor units2. a If the equivalent length between an outdoor unit and the farthest indoor unit exceeds 295 ft 90 m increase the gas pipe by one size Figure 9 Y joint connection Outdoor unit EM C NEED CENSO eee ae SUED GEN p A B C D E E E q q IX s a EL ri l H1 h j k m n Y joints l 1 1 1 1 Sie Sie ae ae ae ee I Indoor units J 8 Figure 10 Y joint and EEV kit connection Outdoor unit Y joints Indoor units VRF SVN33A EN 15 Refrigerant Piping Table 9 Maximum refrigerant piping length and height differences for installations with Y joints and EEV kits Piping location Piping length and height difference ft m Y joint and distribution header connection refer to Figure 12 Distribution header connection refer to Figure 11 Maximum allowable piping length Mini outdoor unit to indoor units Actual length Equivalent length The distance between the mini outdoor unit and the farthest indoor unit lt 492 ft 150 m Example 8 indoor units a g lt 492 ft 150 m Example 8 indoor units at b c lt 492 ft 150 m The distance between a mini outdoor unit and the farthest indoor unit lt 574 ft 175 m 3 Main pipe length The main pipe a from the mini outdoor unit to the first Y joint should be less than 361 ft 110 m height difference indoor units Total length The sum of the total length of pipes
3. At least 9 84 ft 3 m away from equipment that generates electromagnetic waves Away from interfering sources such as radio computer and stereo equipment Far enough away from people living and working nearby so that hot discharge air or noise do not disturb them Away from inflammable materials Ensure that condensate water generated by the outdoor unit can drain smoothly away from the unit Install the power and communication cables in a separately installed enclosure e If installing on a high place such as a roof with a fence or guard rail around it e fthereis a potential for accumulated snow to block the air inlet or heat exchanger install the unit on a higher base e R 410A refrigerant is a safe nontoxic and nonflammable refrigerant However if there is a concern about a dangerous level of refrigerant concentration in the case of refrigerant leakage add extra ventilation Avoid installing the outdoor unit where corrosive gases such as sulfur oxides ammonia and sulfurous gas are produced If unavoidable consult with an installation specialist about using a corrosion proof or anti rust additive to protect the unit coils Moving the Mini Outdoor Unit Follow these guidelines when moving the mini outdoor unit Before moving the unit determine a path that can support its weight Do not lay the unit on its side and do not slant the unit more than 30 degrees Take care to avoid injury while movin
4. Branch Joint Selection cirri 0 0 ccc eee tenes 14 Pipe Thickness and Temper Grade 0 00 e cece eee eee 14 Refrigerant Piping Maximum Length and Height Differences 15 Storing Refrigerant Piping sssssseees eh 17 Evacuating Refrigerant 0 0 cee ees 17 Installing Refrigerant Piping 0 0 cece eee eens 18 eI MM dom poled Sih ae a yt Pe RO oe hel oe Rae ee A 18 PIPE CUEING act ho atte hae titrate SBR eR oleae ote ee oe ee E RS 18 Nitrogen Flushing While Brazing llle 19 Flared Pipe Connections 000 cee ee 19 Connecting Piping to the Mini Outdoor Unit 5 21 Refrigerant Piping Installation Examples sees 22 Electrical WING esie URP RE CE RUE owed ds ayaa tel Wades xU Ed 23 Power WINO ccce yita ver RED roei adh Wioled wa XN ERE Madea we tes 25 GEOUDndlfig s eei a AX diete ci e PE a t pq 27 Installing a Grounding ROod 0 0 cece eene 27 Installing the Grounding Cable ssseseseeeesrenns 27 Communications Wiring 0 cette teens 28 Leak Testing Pipe Connections 20sec cece eee eee 29 VRF SVN33A EN 3 Vacuum Drying Procedure y ERRARE RRERE REA ddan 31 Insulating Refrigerant Pipes iseeseeeeeesres 32 Refrigerante siis cadacs tay bna hr a UE RE Le IER tad hewn Gan Ad owas pee 34 Calculating the Refrigerant 0 00 c cece tee eae 34 Charging the
5. 600 24 600 60 1500 a Da a c n A 60 1500 24 600 120 3000 120 3000 12 300 Location Considerations Choose an installation location based on the following considerations Install the outdoor unit Ona supporting structure that can bear the weight of the outdoor unit With sufficient clearances around the unit for service and repairs Install the outdoor unit Ona flat surface that does not collect rain water Ina well ventilated location Away from strong wind Away from direct exposure to rain or snow Where there is no risk of flammable gas leakage Where there is no exposure to salt machine oil sulfide gas or corrosive environmental conditions Away from sea breeze Note Forseacoast applications block the unit from direct exposure to sea breeze by installing the unit behind a structure such as a building or a protective wall thatis L5 times higher than the unit leaving 28 in 700 mm of space between the wall and unit for air 8 VRF SVN33A EN Preparing for Installation circulation Consult an installation expert about taking anti corrosion measures such as removing salinity on the heat exchanger and applying a rust inhibitor more frequently than once a year ODU Sea breeze Lo Sea Protection walls Sea breeze E gt Sea breeze D ODU Sea Sea
6. 9 52 25 1 31 0 ft lb 0 50 0 52 oN R 016 031 1 2 12 70 36 1 45 0 ft lb 0 64 0 65 3 Pes i 5 8 15 88 50 2 60 5 ft lb 0 76 0 78 20 VRF SVN33A EN Refrigerant Piping Connecting Piping to the Mini Outdoor Unit Service valve high pressure liquid side VRF SVN33A EN Important Ensure that all pipe connections are accessible for servicing and maintenance Pipes can be connected to the mini outdoor unit atthe front back bottom left or right of the unit 1 Remove the pipe cover from the unit See Figure 14 Figure 14 Pipe connections on unit Service valve low pressure gas side adiant heat vents Liquid pipe luae f Gas pipe 2 Remove the knock out that you are going to use Unused knock outs should remain closed to prevent damage to the unit Take care to prevent damage to the exterior of the unit Remove burrs from knock out hole edges and apply rust inhibitor 3 Connectthe pipes to the unit using flared connections or by brazing If brazing the pipe connection avoid damaging the service valves by wrapping them with a wet cloth Avoid damaging the temperature sensor Ensurethat the connected pipes do not touch each other or make contact with the unit 21 22 Refrigerant Piping 4 Aftermaking electrical connections see Electrical Wiring p 23 and insulating the pipes see Insulating Refrigerant Pipes p 32 replace the pipe cover and close the
7. Grounding Important Grounding must be done by a qualified electrician The unit cannot be ground by a gas or water pipe a lightning rod or a telephone line grounding wire Ground the unit at an exclusive grounding terminal at the electrical panel see Figure 18 or if the power distribution circuit is not grounded or its grounding does not comply with electrical codes and specifications to a grounding rod Figure 18 Mini outdoor unit grounding examples Grounded to exclusive grounding terminal that Grounding at the is part of the structure electrical panel Grounded to grounding rod E gt z j EN 4 4p s I is D SS Installing a Grounding Rod If the installation requires a grounding rod is required follow this procedure L Select a grounding rod that complies with national and local codes 2 Select a location for the grounding rod that Contains hard damp soil rather than loose sand or gravel Is located away from underground structures such as gas and water pipes telephone lines and underground cables Is at least 6 6 ft 2 m away from a lightning conductor 3 Install the grounding rod in accordance with national and local codes 4 Proceed with Installing the Grounding Cable Installing the Grounding Cable L Select rated grounding cable by referring to the mini outdoor unit power cable specifications Table 11 p 25 2 Connectthe grounding cable to the grounding hole inside the power supply box and pull
8. Option be installed 43 Test Operation Test Operation After all pre start checks refer to Pre Start Checks p 43 have been have been completed run the test operation under the following temperature conditions 122 50 104 40 86 30 68 20 m a oe Cooling 50 10 Heating 32 0 14 10 Indoor temperature F C 4 20 41 5 50 10 59 15 68 20 77 25 86 30 95 35 104 40 113 45 Outdoor temperature F C Notes During the test operation cooling heating modes are selected automatically Within the temperature range marked with hashed lines system protection control may trigger during the test operation If this occurs test results may be inaccurate When the temperature is outside of the guaranteed range test accuracy may decrease to the borderline area shown in the graph A WARNING Hazardous Voltage Rotating Components Do not operate the product with the panel or duct outlet protection net off There is risk of personal injury from parts that rotate or contain high voltage A CAUTION Risk of Bum or Frostbit Refrigerant pipe may be hot or cold during or right after the operation depending on the status of the refrigerant which flows through the refrigerant pipe compressor and other parts of the refrigerant cycle Do not touch the refrigerant pipe during or right after the op
9. However if the desire is to reduce energy consumption or improve heating performance control the operation according to the surrounding environment c As the target high pressure is decreased energy consumption and noise may decrease but the indoor air discharge temperature will also decrease d Heating operation increases frequency when the current high pressure is higher than the target high pressure and vice versa e If the target high pressure is high the discharge air temperature of an indoor unit will increase but energy consumption will also increase VRF SVN33A EN 39 Control System 40 Table 21 System configuration using DIP switches K13 K16 Maximum current per unit model 4TVHO036B100NB 4TVHOO48B100NB 4TVH0053B100NB 3 ton 4 ton 5 ton DIP switch Current limit option K13 On DU Maximum current default 22 A Maximum current default 24 A Maximum current default 32 A n K13 On Default 4A Default 2A Default 2A K14 Off K13 Off Default 6A Default 4A Default 4 A K14 On K13 Off Default 8A Default 6A Default 6A K14 Off Defrost optimization a b c K15 On Default Mid K16 On K15 On Default Mid K16 Off K15 Off Low1 K16 On K15 Off Low2 K16 Off a This option is used in locations where humidity is high and as a result defrost mode occurs frequently b Maintaining factory default status is re
10. Refrigerant 00 00 onanan annaa 35 Connecting the Drain Hose uv icis ges euet be tnn te ae ac ibid 36 Control Systems soi AR ER RIP ea PPS d 2258s RS DLE REN RE dew m ads 37 System Monitoring a a aiaa hn 37 Configuring the System 0 cette eens 38 Initiating System Operations 0 c cece 41 Monitoring System Settings 0 ccc eee eens 42 Pre StarE CIRCCKS mestiere a MN enh out ed Pede eS IE sh a oss RANG 43 TestOperation d nies Heke ation feet ee EE oU ce xor ee et eu eiie 44 Refrigerant detection operation ssuseluueeseeseelseeeeeeeeee 46 Service Pump Down Process dace E eR RE ex M ER ERR ERE 47 Collecting Refrigerant into a Refrigerant Container Ls 47 Pump Down Process ssssesee ehh hern 48 Warranty For Trane Advantage VRF Systems and Related Accessories 49 Basic Warranty sosis cuiris ni druipt ehh 49 Exclusions and Limitations 0 00 cc ccc cece eee eee eae 49 VRF SVN33A EN Preparing for Installation Unit Dimensions and Weights Table L Unit dimensions and weights Preparing for Installation Shipping dimensions
11. SVN33A EN Before leak testing pipe connections read all safety precautions and notes A WARNING Confined Space Hazards Do not work in confined spaces where refrigerant or other hazardous toxic or flammable gas may be leaking Refrigerant or other gases could displace available oxygen to breathe causing possible asphyxiation or other serious health risks Some gases may be flammable and or explosive If a leak in such spaces is detected evacuate the area immediately and contact the proper rescue or response authority Failure to take appropriate precautions or to react properly to such potential hazards could result in death or serious injury A WARNING Explosion Hazard Never use an open flame to detect gas leaks It could result in an explosion Use a leak test solution for leak testing Failure to follow recommended safe leak test procedures could result in death or serious injury or equipment or property only damage Use only dry nitrogen with a pressure regulator for pressurizing unit Do not use acetylene oxygen or compressed air or mixtures containing them for pressure testing Do not use mixtures of a hydrogen containing refrigerant and air above atmospheric pressure for pressure testing as they may become flammable and could result in an explosion Refrigerant when used as a trace gas should only be mixed with dry nitrogen for pressurizing units Failure to follow these recommendations could result in death or seriou
12. Storage location Storage time Sealing type Longer than one month Pipe pinch Outdoor Shorter than one month Taping Indoor Taping Evacuating Refrigerant The mini outdoor unit ships with the following amount of refrigerant Evacuate the unit of all ship with refrigerant before installing refrigerant piping Ship with refrigerant amount by unit type 3 ton unit 4 ton unit 5 ton unit 7 1 Ibs 7 1 Ibs 7 3 Ibs VRF SVN33A EN 17 Refrigerant Piping Installing Refrigerant Piping Overview Pipe Cutting 18 A WARNING Hazard of Explosion and Deadly Gases Failure to follow all proper safe refrigerant handling practices could result in death or serious injury Never solder braze or weld on refrigerant lines or any unit components that are above atmospheric pressure or where refrigerant may be present Always remove refrigerant by following the guidelines established by the EPA Federal Clean Air Act or other state or local codes as appropriate After refrigerant removal use dry nitrogen to bring system back to atmospheric pressure before opening system for repairs Mixtures of refrigerants and air under pressure may become combustible in the presence of an ignition source leading to an explosion Excessive heat from soldering brazing or welding with refrigerant vapors present can form highly toxic gases and extremely corrosive acids NOTICE System Component Damage Do not remove the seal caps fro
13. container used to collect refrigerant from the system must be one that is exclusively designed for that purpose The maximum amount of refrigerant that can be put into a mini outdoor unit is 176 4 oz Because of this limitation some of the refrigerant should be removed from the system to a refrigerant container before performing the pump down process Ll Have ready an empty refrigerant container a weighing scale and a manifold gauge 2 Determine through calculation the current amount of refrigerant in the system 3 Connect the refrigerant container to the mini outdoor unit and operate 50 of all indoor units in cooling mode Figure 23 Removing refrigerant from the system to a refrigerant container Outdoor unit Gas side h Liquid side service valve service valve Refrigerant container valve Manifold gauge valve 1 TA Manifold gauge ud r valve 2 Scale 4 After 10 minutes of operation use the manifold gauge to check the liquid side pressure When the pressure is higher than 420 61 psig 2 9 MPa decrease the number of operating indoor units 5 Check the pressure again When it has decreased to less than 420 61 psig 2 9 MPa open the liquid side service valve and the manifold gauge valve that is connected to the liquid pipe to let the refrigerant run into the refrigerant container Important The amount of refrigerant that can be put into the refrigerant container should be approximately 5096 ofthe
14. model number tons outdoor unit Btu h 4TVH0036B100NB 3 6 19000 49000 4TVH0048B100NB 4 8 24000 62000 4TVH0053B100NB 5 9 27000 69000 VRF SVN33A EN Preparing for Installation Service Clearances Install units as shown in the illustrations below Figure 1 Figure 2 and Figure 3 observing ventilation and service requirements Space requirements are based on cooling mode operation and an outdoor temperature of 95 F 35 C More space is required if the outdoor temperature is higher than 95 F 35 C or if the area is easily heated by solar radiation Note The front of the unit is curved and has the name brand logo on it Figure L Air flow direction Back Front Front Back Side view bs Top view Figure 2 Minimum service clearances for a single mini outdoor unit installation When air outlet is toward a wall U NI U When the air outlet is opposite a wall a 12 300 0 1500 i Top of unit is blocked and the air When three sides are blocked by a wall outlet is toward a wall st i e e ci DU 2 o 4 EJ U a 6 150 24 600 When top of unit is blocked and the air outlet is opposite the wall When from and back of unit are blocked by walls Ss 12 300 3 e B e os g ay o re U eo to VRF SVN33A EN Preparing for Installation Figure 3 Minimum service clearances for multiple mini outdoor unit installations 12 300 un nn n g g g 24
15. plus the frame height should be greater than the highest expected snowfall If necessary has wire mesh or steel bars added to the concrete to prevent damages or cracks VR EBFT Cine Cis Duran mns 6 in 150 mm min E 7 F6 in 150 mm Drain pit 7 Ws Ground installation Base installation Surface of Raised base base must be horizontally level 10 VRF SVN33A EN Unit Installation Minimizing Vibration When installing multiple mini outdoor units side by side or when there is a need to minimize unit vibrations use a vibration minimizing structure such as an H beam frame or a vibration isolation frame and an isolation pad Refer to the specifications in Figure 5 After installation apply corrosion protection to the frame Figure 5 Vibration minimizing structure specifications Outdoor unit Anchor bolt with nut spring washer Isolation pad minimum thickness gt 1 in 20 mm H beam Jt A Width of unit mounting foot 3in 75b mm min Isolation pad dimensions A 1 2 to 1 in 10 20 mm minimum Base After installing a vibration isolation frame loosen the bolts so that the isolators are capable of absorbing vibrations Figure 6 Figure 6 Bolts on vibration isolation frame Ensure that bolts are loose Securing the Mini Outdoor Unit The mini outdoor unit must be secured so that it can withstand a wind speed of 67 mph 30 m s Secure the unit firmly to the base with M 10 an
16. total refrigerant in the system Do notfill the refrigerant container more than 85 of its capacity average temperature 77 F 6 Usethe scale to determine how much refrigerant that has been collected 7 Aftertheproper amountof refrigerant has been collected turn off the manifold gauge valve and the liquid side service valve 47 Service Pump Down Process Pump Down Process Equipment Damage Do not allow the amount of system refrigerant that is pulled into the outdoor unit during the pump down process to exceed the capacity of the outdoor unit or equipment damage may occur L Follow the procedure for Collecting Refrigerant into a Refrigerant Container p 47 2 Press the K2 button on the outdoor unit control board three times to initiate the pump down process Table 23 p 41 Using a manifold gauge observe the pressure drop when the compressor starts operating When the pressure reaches lower than 0 psig 0 MPa turn off the gas side service valve Press the K3 button once Au BW Remove manifold gauge 48 VRF SVN33A EN Warranty For Trane Advantage VRF Systems and Related Accessories Warranty For Trane Advantage VRF Systems and Related Accessories Products Covered This warranty is extended by Trane and applies to all Trane Advantage VRF systems and accessories forthese products which are sold by Trane and applied in accordance with Trane specifications Basic Warranty The warrantor warrants fo
17. vacuum pressure less than 29 7 inH20 allow the vacuum drying to continue for at least 2 5 hours Note More time may be needed depending on pipe length or outdoor temperature Close both manifold gauge valves to isolate the system Then quickly shut off the vacuum pump Wait 1 hour Then use the vacuum gauge to verify that the pressure remains at 29 7 inH2O If it has proceed to Step 7 If the pressure increases to over 29 7 inH20 in an hour either leaks or moisture remain in the pipes Repair as necessary using the following procedure a Using a nitrogen gas tank fitted with a pressure regulator attach hoses from the tank to the liquid side and gas side service ports on the unit see location in Figure 20 p 30 b Apply nitrogen at 725 psi 0 05 MPa to help remove moisture in the lines C Perform the vacuum drying procedure again steps 1 3 for a minimum of 2 hours d Repeat the leak test and the vacuum drying procedure as necessary until the pressure remains at 29 7 inH2O for 1 hour Proceed with insulating the pipes p 32 and charging the refrigerant p 34 31 Insulating Refrigerant Pipes Insulating Refrigerant Pipes After determining that there are no leaks in the refrigerant pipes insulate them as described L UseTable 14to select the insulation thickness according to pipe size and humidity conditions Table 14 Pipe insulation selector Insulation Type Standa
18. E OF DEALING OR TRADE Additional warranty protection is available on an extra cost basis and must be in writing and agreed to by an authorized signatory ofthe Company Additional terms and conditions of warranty coverage are applicable for refrigeration equipment If you wish further help or information concerning this warranty contact Trane Warrantor 2701 Wilma Rudolph Blvd Clarksville TN 37040 49 Warranty For Trane Advantage VRF Systems and Related Accessories 50 VRF SVN33A EN Trane optimizes the performance of homes and buildings around the world A business of Ingersoll Rand the leader in creating and sustaining safe comfortable and energy efficient environments Trane offers a broad portfolio of advanced controls and HVAC systems comprehensive building services and parts For more information visit www Trane com Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice 2013 Trane All rights reserved VRF SVN33A EN 31 May 2013 We are committed to using environmentally IR Il R d NEW conscious print practices that reduce waste ngerso an
19. Installation Variable Refrigerant Flow VRF System Mini Outdoor Unit Series Models 4TVHOO36B100NB 4TVHOO48B100NB 4TVHOO53B100NB ASAFETY WARNING Only qualified personnel should install and service the equipment The installation starting up and servicing of heating ventilating and airconditioning equipment can be hazardous and requires specific knowledge and training Improperly installed adjusted or altered equipment by an unqualified person could result in death or serious injury When working on the equipment observe all precautions in the literature and on the tags stickers and labels that are attached to the equipment May 2013 VRF SVN33A EN Introduction Read this manual thoroughly before operating or servicing this unit Wamings Cautions and Notices Safety advisories appear throughout this manual as required Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions The three types of advisories are defined as follows Indicates a potentially hazardous A WARNING situation which if not avoided could result in death or serious injury Indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury It could also be used to alert against unsafe practices Indicates a situation that could resultin equipment or property damage only A CAUTION NOTICE Important Environmental Concems Scie
20. Settings Buttons K4 is used to monitor system settings and software versions Table 25 Button K4 Number of 7 segment display times button K4 is pressed Setting Description Digits 1 2 3 4 1 Current frequency 15Hz 1 0 1 5 2 Low pressure 37 0 psi 2 6 kg cm2 2 0 2 6 3 Outdoor temperature 74 3 F 23 5 C 3 2 3 5 4 Discharge temperature 177 3 F 80 7 C 4 8 0 7 5 OLP temperature 203 F 95 C 5 9 5 0 6 COND Out temperature 79 3 F 26 39C 6 2 6 3 7 Double pipe out tube temperature 113 F 45 C 7 4 5 0 8 High pressure value 221 9 psi 15 6 kg cm2 8 1 5 6 9 Fan speed 700 rpm 9 7 0 0 10 ESC EVI EEV 180 step A 1 8 0 11 MAIN EEV 1500 step B 1 5 0 12 Present running current 15A C 1 5 0 13 Number of connected indoor units 10 D 0 1 0 14 Number of operating mini outdoor units 8 E 0 0 8 15 Sum of indoor unit capacity 47 640 Btu h 12 000 kcal h F 1 2 0 a Gauge pressure Table 26 Button K4 press and hold for 3 seconds 42 7 segment display Number of times button K4 is Software version Version examples pressed and held 3 seconds Unit address Digits 1 2 3 4 0 Main circuit board version 0 9 1 2 1 Inverter board version 0 9 1 2 2 EEPROM version 0 9 1 2 Digit 1 Digit 2 Digit 3 4 Address examples 3 Automatically assigned unit A 0 0 5 addresses 4 Manually assigned unit A 0 0 1 addresses VRF SVN33A EN P
21. chor bolts see Figure 7 Usezinc plated or stainless steel nuts and bolts Usearubber washer between the bolt and the unitto prevent bimetallic corrosion VRF SVN33A EN n Unit Installation Figure 7 Anchor bolt positions Anchor bolt holes 4 244 620 37 0 940 If you cannot attach the unit to the base or if the unit needs additional support secure it with wires as follows L Loosen the four screws at the top of the unit and wrap wire around each of them 2 Tighten the screws 3 Stake the wires to the ground see Figure 8 Figure 8 Securing the unit with wire Condenser Air Discharge Duct optional CAUTION Sharp Edges Working with galvanized sheet metal involves working with sharp edges To avoid being cut technicians MUST put on all necessary Personal Protective Equipment PPE including gloves and arm guards If you remove the fan guard to install the discharge duct make sure to install a safety net on the duct outlet to prevent foreign substances from entering the unit and to prevent the risk of personal injury from sharp fan blades 12 VRF SVN33A EN Refrigerant Piping Refrigerant Piping This section contains information on selecting storing and connecting refrigerant piping Selecting Refrigerant Piping Refrigerant piping diameter thickness and temper is selected according to length as specified in this section Notes Useinsulated unwelded de
22. commended If set to Low the temperature at which it enters defrost mode will decrease If the temperature at which it enters defrost mode decreases the duration of defrost operation will increase As a result the overall heating capacity will be reduced c Defrost mode will start when the difference between the outdoor temperature and the outdoor coil temperature has exceeded its At VRF SVN33A EN VRF SVN33A EN Initiating System Operations Control System Buttons K1 K2 and K3 are used to initiate system operations The first two digits of the 7 segment display respond as shown in the last column of the following tables Table 22 Button K1 Number of times K1 is pressed Operation 7 segment display Digits 1 and 2 1 hold for 5 seconds Test operation 1 Refrigerant charging in heating mode L 2 Test operation in heating mode L 3 Pump down in heating mode L 3 4 Vacuum Eu 5 Completion Blank Table 23 Button K2 Number of times button K2 is 7 segmentdisplay pressed Operation Digits 1and2 1 Refrigerant charging in cooling mode 2 Test operation in cooling mode 3 Pump down in cooling mode 4 Refrigerant detection operation 5 Completion Blank Table 24 Button K3 Number of times button K3 is pressed Operation 7 segment display 1 Initialize reset operation Same as power up 8888 41 Control System Monitoring System
23. connected indoor units within the allowable range Are the length and the height difference between the refrigerant pipes within the allowable range Are the branch joints properly installed Has the connection of liquid and gas pipes been correctly performed Have you selected correct insulator for pipes and insulated them correctly Is the pipe or connection part properly insulated Is the quantity of the additional refrigerant correctly weighed in You must record the amount of additional refrigerant charging on the service record paper placed outside the outdoor unit Refrigerant pipe Have you checked whether the drain pipes of the indoor unit and outdoor unit are connected together Have you completed the drain test Is the drain pipe properly insulated Drain pipe Are the power cable and communication cable tightened firmly on the terminal board within the rated torque recommendations Have you checked for cross connection of the power and communication cables Have the outdoor unit been properly grounded Is the communication cable shielded Is the wire length within the recommended limit Is the wiring route correct Electrical Are the address of the indoor and outdoor units properly set Are the address of the indoor and outdoor units properly set if multiple remote controllers are to be used Setting address Ensure that the vibration isolation structure is correctly installed or if one needs to
24. d with an inspection required sign referto the service manual for information on correcting the items and run the test operation again Ensure the following Thesystem hasthe correct refrigerant amount see Refrigerant detection operation p 46 after the unit has been operating in cooling mode for at least 30 minutes e Cooling heating operation runs normally e Air flow direction and fan speed of indoor units runs normally There are no abnormal operating noises from indoor or outdoor units During cooling operation the indoor units drain properly Use VRF Enterprise Management Software to check operating status details Explain to the user how to use the indoor unit and leave them with the indoor unit manual for their reference 45 Refrigerant detection operation Refrigerant detection operation 46 Perform the refrigerant detection operation only under the following conditions e After the unit has been operating in cooling mode for at least 30 minutes Within the following operating envelope Indoor 68 86 F 20 30 C Outdoor 41 109 4 F 5 43 C Failure to comply may result in the operation ending before completion or in inaccurate results If the unit triggers protection control the results may be inaccurate Start Press the K2 button 4 times Input VRF Technicial Utilities signal F L t Satisfy the temperature condition Detect amou
25. e 12 p 25 for cable conduit specifications AWARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury L Connect the communications cable wires to the terminals as shown in Figure 19 Notes Ensure that more than Lin 20 mm of the outer sheath of the power and communication cable conduit are inside the electrical component box To reduce interference ensure that power and communication cables run in parallel with a minimum space of 2 in 50 mm between the cables or if crossing is necessary cross at 90 degrees The communication cable between mini outdoor units and between indoor and outdoor units has no polarity Figure 19 Communications board and wiring terminals v ol N F F1 F2 Communication between indoor and outdoor units ge a 4 2 Provide strain relief for the communications cable 3 Pullthecommunications cable through the designated knock out at the bottom right of the mini outdoor unit refer to Figure 15 p 23 Figure 16 p 24 28 VRF SVN33A EN Leak Testing Pipe Connections Leak Testing Pipe Connections VRF
26. el 4TVH0036B100NB 3 ton 4TVH0048B100NB 4 ton 4TVH0053B100NB 5 ton Initial refrigerant Table 16 Refrigerant quantity for each indoor unit Capacity MBH 75 9 9 5 12 18 20 24 30 36 48 76 8 96 Model Refrigerant quantity Ib kg 1 way cassette 0 55 0 55 0 55 4TVEOO B100NB 0 25 0 25 0 25 Mini 4 way cassette 0 82 0 82 0 82 0 82 4TVBOO B100NB 0 37 0 37 0 37 0 37 4 Way cassette 0 99 0 99 0 99 1 52 1 52 1 52 4TVCOO B100NB 0 45 0 45 0 45 0 69 0 69 0 69 Slim duct 0 53 0 53 0 53 0 99 0 99 0 93 0 93 1 37 4TVLOO B100NB 0 24 0 24 0 24 0 45 0 45 0 42 0 42 0 62 MSP duct 0 62 0 62 1 19 1 19 1 50 4TVDO0O B100NB 0 28 0 28 0 54 0 54 0 68 HSP duct 1 50 1 50 2 60 2 60 4TVAOO B100NB 0 68 0 68 1 18 1 18 High wall 0 53 0 53 0 53 0 79 0 79 0 79 4TVWOO0 B100NB 0 24 0 24 0 24 0 36 0 36 0 36 Convertible 0 86 0 86 ceiling floor i 4TVX00 B100NB 0 39 0 39 34 VRF SVN33A EN Refrigerant Charging the Refrigerant After calculating the correct amount of refrigerant needed by the system see Calculating the Refrigerant p 34 charge the system as described in the following procedure A WARNING Hazard of Explosion and Deadly Gases Do not heat the refrigerant container to speed up the charging process An explosion could result re
27. eration to avoid getting bumed our frostbit NOTICE Avoid Unit Damage Wait at least 5 minutes before tuming off the main power after the test operation is finished If you do not water leakage or other problems may occur Wait at least 3 hours after power is supplied to the outdoor unit before operating it to allow time for the crank case heater to pre heat If the crank case heater is not pre heated before operation unit parts are at risk of being seriously damaged L Before powering the unit heed the precautions given above for the test operation VRF SVN33A EN VRF SVN33A EN Test Operation Note When power is supplied to the outdoor unit it will check for and verify communications with the indoor units Ensure that the front of the outdoor unit is closed Press and hold button K1 for 5 seconds to run the test operation see Table 22 p 41 During the test operation the compressor is restricted from operating e UP for unprepared will appear on the digital display When the test operation has completed the display will clear Thetest operation may continue from 30 50 minutes depending on the operating status During the test operation noise may occur due to valve inspection Examine the unit if abnormal noises continue to occur When the test operation ends use VRF Enterprise Management Software or VRF Auto Commissioning Tool to issue a test results report If any items in the report are marke
28. es waterproofing VRF SVN33A EN 25 Electrical Wiring 26 2 Cutthe power cable to an appropriate length and connect it to terminals L and N in the power supply box with a solderless ring terminal see Figure 17 Screw Tightening torque for terminal Terminals M4 0 9 1 1 Ibf ft 1 2 1 5 N m Communication F1 F2 M5 1 5 1 8 Ibf ft 2 0 2 5 N m Single phase AC power L1 L2 3 If two cables are connected to one terminal place the cables back to back with the thin cable upward and the thick cable downward as shown in the detail in Figure 17 Secure the cable s with a cable tie and provide strain relief 5 Replace the cover on the terminal board Note Make sure that the section of the power supply cable that has the sheath removed is inside the power supply box If this is not possible connect the power cable conduit to the power supply box 6 Pull the power cable through the designated knock out at the bottom right of the mini outdoor unit refer to Figure 15 p 23 Figure 16 p 24 Figure 17 Power wiring connections L N AC power terminals Detail for connecting two cables to one terminal o QD U P o TAS 1 Y NGC el 210 Oo T els 4 Solderless ring terminal Cable tie Thick cable Thin cable VRF SVN33A EN Electrical Wiring
29. g the unit the surface of the heat exchanger is sharp Ifmovingtheunit with a crane fasten the wire ropeas shown in Figure 4 To protect damage or scratches to the unit use a spreader bar Ifthe unit is being moved a short distance by hand two people should lift and carry it together using the transportation handles on the side of the unit as shown in Figure 4 VRF SVN33A EN 9 Figure 4 Moving the mini outdoor unit Moving with a crane Moving By hand Wire rope straps Spreader bar Wood palette Transportation handles Unit Installation Follow these guidelines for installing the mini outdoor unit Important The manufacturer is not responsible for damage incurred for installations that have not followed these guidelines The unit must be installed On a horizontally level surface e On a surface that is strong enough to support the unit and to minimize noise Base Recommendations General guidelines A supporting base for the mini outdoor unit Is typically made of concrete e Should typically be 15 times larger than the bottom of the unit However for installations that are subject to snow accumulation the base should be no larger than the bottom of the unit Should be6 in 150 mm or higher to protect the unit from rain water or other conditions that may cause damage to the unit Note The base height or if the unitis installed on a frame see Minimizing Vibration p 11 the base height
30. git Ones Digit 7 segment display ON ON ON i c il COO 000 OU UL F 12941 1234 112 34 n K5 K6 K7 K8 K9 K10 K11 K12 K13 K14 K15 K16 o dj o o er o o o o o o o o o o o o K2 K3 K4 K1 System Monitoring The 7 segment display indicates system power and communication status Table 17 7 segment display Event Digit 1 Digit 2 Digit 3 Digit 4 Power upt g g g g Establishing communication between Aa gd Number of connected indoor units outdoor and indoor units Transmit receive normal operation Indoor unit A Indoor unit 0 Unit address decimal number a 7 segment display example showing power up is shown in Figure 22 VRF SVN33A EN 37 Control System Configuring the System The control board contains two rotary switches and three DIP switches shown in Figure 22 The following tables explain their functions Table 18 Configuration using rotary switches SWOL and SW02 SWO01 SWO2 Total number of installed indoor units Tens digit Ones digit Use to set total number of installed indoor units Notes 1 For example if 3 indoor units are installed Set SWO01 to 0 set SWO2 to 3 2 Set at mini outdoor unit only Table 19 Configuration using DIP switches K5 K8 DIP switch Setting Function description K5 Not used Not used Default is 0 Snow prevention con
31. greased and deoxidized copper pipe Cu DHP type according to ISO 1337 or UNI EN 12735 1 suitable for an operating pressure of at least 609 15 psi 4200 kPa and a burst pressure of atleast 3002 28 psi 20 700 kPa Copper pipe for hydro sanitary applications is unsuitable f there is a risk of decreased performance caused by pipe length use piping that is one size larger than that specified in this section Pipe Diameter Table 3 specifies the diameter of the main pipe based on unit capacity Table 3 Mini outdoor unit main pipe size based on unit capacity Mini outdoor unit capacity Liquid pipe Gas pipe Ton MBH in mm in mm 3 38 5 8 in 15 88 mm 4 48 3 8 in 9 52 mm 5 53 3 4 in 19 05 mm a Increase the gas pipe from the outdoor unit to the first branch joint by one size if the pipe length between the outdoor unit and the farthest indoor unit including the elbow exceeds 295 ft 90 m or if the outdoor unit capacity declines due to pipe length First branch joint Main pipe Table 4 specifies the pipe size between branch joints Table 4 Pipe size between branch joints Pipe size OD Indoor unit total capacity Liquid Gas MBH in mm in mm Less than 51 5 8 15 88 3 8 9 52 51 79 2 3 4 19 05 VRF SVN33A EN 13 Refrigerant Piping Branch J oint Selection Table 5 specifies the first branch joint according to mini outdoor un
32. h internal EEV circuit breaker or Mini outdoor unit disconnect Single phase 2 wire 208 230 V T 7 i See Figure 17 p 26 for wiring details oy Notes ve Remove burrs from the knock out hole E 2 Use cable conduit and bushing to prevent cables from being g o Ground damaged when passing through the knock out holes S rou Apply rust resistant paint around the knock out hole e Pe s alae ds ce Power cable puisse wea ac 1 es Power cable c uad i 35 t breakeror o ES Communication between disconnect Oo outdoor and indoor units 1 Indoor unit Wired remote controller Indoor unit Wired remote controller Wired remote controller Ground Ground Ground VRF SVN33A EN 23 Electrical Wiring 24 Figure 16 Typical system installation wiring with external EEV kit Mini outdoor unit Single phase 2 wire 208 230 V circuit breaker or disconnect Communication between outdoor and indoor units EEV kit circuit breaker or disconnect Ground Powe r cable _ S 9 X 2 oO e Oo z 5 E o O ais Indoor unit Wired as remote controller Ground s See Figure 17 p 26 for wiring details Notes Remove burrs from the knock out holes Use cable conduit and bushing to prevent cables from being damaged when passing through the knock out holes Apply rust resistant pa
33. he pipes the vibration of the compressor will be transferred to the pipes and can damage the power supply cables or pipes The damage could result in fire or explosion causing death or serious injury Follow this procedure 1 Referto Table 11 for power cable and circuit breaker specifications and Table 12 for conduit specifications Table 1L Circuit breaker and power cable specifications Power RLA FLA Model Hz V Fan1 Fan2 MCA MOP 4TVH0036B100NB 16 9 0 6 0 6 23 40 4TVH0048B100NB 60 208 230 22 1 0 6 0 6 29 50 4TVH0053B100NB 26 0 0 6 0 6 34 55 Notes RLA is based on AHRI 210 240 cooling standard condition indoor temperature 80 F 26 7 C DB 67 F 19 46 C WB outdoor temperature 95 F 35 C DB Voltage tolerance is 10 Maximum allowable voltage between phases is 2 Abbreviations RLA Rated load ampere FLA Full load ampere MCA Minimum circuit amperes MOP Maximum overcurrent protective device amperes Table 12 Cable conduit specifications Name Temper grade Application conditions Flexible PVC conduit Class 1 flexible conduit If conduit is installed indoors and not exposed to outside Pu elements embedded in concrete If conduit is installed indoors but exposed to outside Galvanized steel sheet elements Class 1 PVC coated flexible conduit Galvanized steel sheet and soft PVC compound If conduit is installed outdoors and requir
34. ing poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes A WARNING Personal Protective Equipment PPE Required Failure to wear proper PPE for the job being undertaken could result in death or serious injury Technicians in order to protect themselves from potential electrical mechanical and chemical hazards MUST follow precautions in this manual and on the tags stickers and labels as well as the instructions below e Before installing servicing this unit technicians MUST put on all PPE recommended for the work being undertaken ALWAYS refer to appropriate MSDS sheets and OSHA guidelines for proper PPE e When working with or around hazardous chemicals ALWAYS refer to the appropriate MSDS sheets and OSHA guidelines for information on allowable personal exposure levels proper respiratory protection and handling recommendations If there is arisk of arc or flash technicians MUST put on all PPE in accordance with NFPA 70E or other country specific requirements for arc flash protection PRIOR to servicing the unit Copyright This document and the information in it are the property of Trane and may not be used or reproduced in whole or in part without the written permission of Trane Trane reserves the right to revise this publication at any time and to make changes to
35. int around the knock out hole Indoor unit Communication Power cable Wired remote controller qo Ground 5 v 4 a E S c o E o E z o 9 oO Indoor unit Wired remote controller D Ground VRF SVN33A EN Power Wiring Electrical Wiring Multi pole circuit breaker or disconnect is required to fully isolate the unit from all power Install circuit breakers disconnects in accordance with local and national codes Select the power cable in accordance with relevant local and national regulations Power cable specifications are based on an underground ambient temperature of 869F 302C and single multi conductor cables If conditions are different from these consult an electrical installation expert and re select the power cable If the length of power cable exceeds 164 04 ft 50 m re select the power cable considering the voltage drop Do not use power cable that has exposed wire Unbalanced power must be maintained within 1096 of supply rating among all indoor units or the unit will stop and an error code will be generated Significantly unbalanced power may shorten the life of the system Use a power cable made out of incombustible material for the insulator inner cover and the sheath outer cover Provide strain relief for power cables A WARNING Avoid Risk of Fire or Explosion Do not let the power cable come into contact with the pipes inside the outdoor unit If the power supply cable touches t
36. it through the designated grounding knock out Note If the grounding cable length needs to be extended make the cable connection in accordance with national and local codes 3 Ifa grounding rod was installed to ground the unit measure the resistance with a ground resistance tester Refer to Table 13 for resistance requirements e Ifthe resistance is above the requirements drive the grounding rod deeper into the ground or increase the number of grounding rods until the resistance requirement is achieved VRF SVN33A EN 27 Electrical Wiring e f you have grounded the unit to a grounding terminal or electrical panel ensure that the resistance meets the requirements Table 13 Grounding resistance requirements Power condition at installation site High or average humidity Low humidity e Ensure that the grounding resistance is 100 Q e Ideally grounding resistance should be 100 and e If a circuit breaker is installed that disconnects the should not exceed 250 circuit within 0 5 seconds the allowable grounding resistance is 30 5009 Voltage to ground is lt 150 V e Ensure that the grounding resistance is 100 If a circuit breaker is installed that disconnects the circuit within 0 5 seconds the allowable grounding resistance is 30 5009 Voltage to ground is gt 150 V Communications Wiring Refer to BAS SVX51 for communications wiring specifications and best practices e Refer to Tabl
37. it capacity Table 5 First branch joint according to mini outdoor unit capacity Mini outdoor unit total capacity ton Branch joint model 3 i 4YDK1509B0051A 5 4YDK2512B0138A Table 6 specifies branch joints connected after the first branch according to the total capacity of all indoor units connected after the first branch Table 6 Branch joints connected after the first branch according to total indoor unit capacity Total indoor unit capacity MBH Branch joint model Less than 51 4YDK1509B0051A 51 138 5 4YDK2512B0138A Pipe Thickness and Temper Grade Table 7 specifies pipe minimum thickness and temper grade based on pipe diameter A CAUTION Risk of Pipes Breaking If pipes with a diameter larger than 3 4 in 19 05 mm are specified use semi hard C1220T 1 2H or hard C1220T H copper piping If a softer copper pipe C1220T O is used the pipe may break due to its low pressure resistance and cause personal injury Table7 Refrigerant pipe minimum thickness and temper grade Outer diameter Minimum thickness in mm in mm Temper grade 1 4 6 35 0 028 0 70 3 8 9 52 0 028 0 70 Annealed 1 2 12 70 0 031 0 80 C1220T O 5 8 15 88 0 039 1 00 3 4 19 05 0 035 0 9 Drawn 7 8 22 22 0 035 0 9 C1220T 1 2H or C1220T H 14 VRF SVN33A EN Refrigerant Piping Refrigerant Piping Maximum Length and Height Differences Tab
38. its content without obligation to notify any person of such revision or change Trademarks All trademarks referenced in this document are the trademarks of their respective owners VRF SVN33A EN Table of Contents VETER CLV CBIOTY y arcet ast ys ote t dax eee t oe Pace tue p eae a Ee et 2 Warnings Cautions and Notices 0 00 0 cece eee eee 2 Important Environmental Concerns 0000 cee eee eee 2 Important Responsible Refrigerant Practices 00005 2 Preparing for Installation eave vest rr rDR VIC br hes ee Eu mes 5 Unit Dimensions and Weights 0 0 0 cece eects 5 Dimensional Drawing sssssesseee n 5 Maximum Quantity of Indoor Units by Mini Outdoor Unit Capacity 6 Service Clearances sares ieee kie tema xS es ee d Fear ker b t d 7 Location Corsrderatioris 3942 9a 19 A 4 3 2 409 0 808 ADIRE 00d Aa OR DEO E 8 Moving the Mini Outdoor Unit 000 0 c eee 9 Unitinstall ton s Em 10 Base Recommendations 2 ixg x paga kg cm oma ER m ER Rd Rm eae 10 General guidelines 0 0 0 cette 10 Minimizing Vibration 0 0000 cee 11 Securing the Mini Outdoor Unit ansaa eenaa 11 Condenser Air Discharge Duct optional 00 0c eee eee 12 Refrigerant PIPING sacaterr dad eke ewe nied we Eee etka e open E TA 13 Selecting Refrigerant Piping 0 ccc cece 13 Pipe Diameter wt exe eee ae ee ee oe Ra 13
39. le 8 Maximum refrigerant piping length and height differences for installations with Y joints and EEV kits Piping length and Y joint and EEV kit height difference Y joint connection connection Piping location ft m refer to Figure 9 refer to Figure 10 The distance between the mini outdoor unit and the farthest indoor unit lt 492 ft 150 m Actual length Example 8 indoor units Example 6 indoor units a b c d e f g p lt 492 ft 150 m at b c d j lt 492 ft 150 m Maximum allowable Mini outdoor unit to piping length indoor units Equivalent length The distance between a mini outdoor unit and the farthest indoor unit lt 574 ft 175 m a The main pipe a from the mini outdoor unit to the first Y joint should be Main pipe length less than 361 ft 110 m Total length The sum of the total length of pipes should be less than 984 ft 300 m H1 Height difference between a mini outdoor unit and indoor unit lt 164 ft Maximum allowable Mini outdoor unit to Height 50 m height difference indoor units 9 H2 Height difference between indoor units lt 49 ft 15 m The distance between the first Y joint and the farthest indoor unit x 131 ft Allowable length between EEV kit Actual length 40 m and an indoor unit lt 65 ft 20 m Example 8 indoor units Example h l j lt 65 ft 20 m b c d e f g p lt 131 ft 40 m Maximum allowable length after Y joint
40. lves and replace caps VRF SVN33A EN 35 Connecting the Drain Hose Connecting the Drain Hose 36 When using the air conditioner in the heating mode ice may accumulate When the unitis in defrost mode condensed water must be safely drained away from the unit through a drain hose To install the drain hose Note A minimum space of 1 96 in 50 mm must be allowed between the bottom of the mini outdoor unit and the supporting base to facilitate drain hose installation EE Bottom of outdoor unit SSS Drain gt E plug 0 51 in 13mm e Lewes Drain hose S L Insertthe drain connector into the drain hole on the underside of the mini outdoor unit 2 Connectthe drain hose to the drain connector 3 Plug the unused drain holes with drain plugs 1 96 in 50 mm VRF SVN33A EN Control System Control System The control board contains a 7 segment display three DIP switches two rotary switches and four buttons as shown in Figure 22 Their functions are explained in this section A WARNING Hazardous Voltage Before making contact with the inverter circuit board wait for at least 15 minutes after powering down the mini outdoor unit to allow the unit to fully discharge high DC voltage Failure to allow the high DC voltage to discharge completely could result in death or serious injury Figure 22 Control board Tens Di
41. m refrigerant connections or open the service valves until prepared to braze refrigerant lines to the connections Excessive exposure to atmosphere 5 min may allow moisture or dirt to contaminate the system damaging valve seals and causing ice formation in system components L Cutor extend field supplied piping as needed To extend pipes braze or using flared pipe connections not supplied Refer to Pipe Cutting p 18 Nitrogen Flushing While Brazing p 19 and Flared Pipe Connections p 19 2 Make sure that pipes are free of dirt debris and moisture and do not leak Refer to Leak Testing Pipe Connections p 29 3 Braze or use flared pipe connections to install piping Refer to Connecting Piping to the Mini Outdoor Unit p 21 Required tools Pipe cutter e Reamer Pipe holder Using a pipe cutter cut the pipe so that the cut edge is at 90 to the side of the pipe Use a reamer to remove all burrs at the cut edge Examples of correctly and incorrectly cut pipes Correct 909 Oblique Rough Burr VRF SVN33A EN Refrigerant Piping Nitrogen Flushing While Brazing Avoid Unit Damage Never braze pipe connections without performing nitrogen flushing Failure to perform this procedure will damage the unit resulting in capacity loss and reduced long term reliability While brazing refrigerant pipes flush them with nitrogen gas Use a pressure regulatorto maintain a flow ra
42. nt of refrigerant J udge the amount of refrigerant 1L Ce 1 Li tl L I 1 E I I im LL nu n Li 3r Normal Excessive Insufficient udgment not available End After the refrigerant detection operation is complete take the following actions e Ifthe amount of refrigerant is excessive discharge 5 of the detected amount and restart the refrigerant amount detection operation e Ifthe amount of refrigerant is insufficient add 5 of the detected amount and restart the refrigerant amount detection operation e Ifthe degree of supercooling is insufficient add 10 of the detected amount of refrigerant and restart the refrigerant detection operation e Ifthe resultis unavailable check that the refrigerant detection operation was conducted within the operating envelope stated above Perform a test operation to determine if there are any other problems with the system VRF SVN33A EN Service Pump Down Process Service Pump Down Process The pump down process pulls all of the refrigerant in the system into the outdoor unit condenser so that repairs can be made to the system Collecting Refrigerant into a Refrigerant Container VRF SVN33A EN A WARNING Refrigerant under High Pressure Failure to follow code conceming could result in an explosion which could result in death or serious injury or equipment damage The refrigerant
43. ntific research has shown that certain man made chemicals can affect the earth s naturally occurring stratospheric ozone layer when released to the atmosphere In particular several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine Fluorine and Carbon CFCs and those containing Hydrogen Chlorine Fluorine and Carbon HCFCs Not all refrigerants containing these compounds have the same potential impact to the environment Trane advocates the responsible handling of all refrigerants including industry replacements for CFCs such as HCFCs and HFCs Important Responsible Refrigerant Practices Trane believes that responsible refrigerant practices are important to the environment our customers and the air conditioning industry All technicians who handle refrigerants must be certified The Federal Clean Air Act Section 608 sets forth the requirements for handling reclaiming recovering and recycling of certain refrigerants and the equipmentthatis used in these service procedures In addition some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants Know the applicable laws and follow them N A WARNING Proper Field Wiring and Grounding Required Failure to follow code could result in death or serious injury All field wiring MUST be performed by qualified personnel Improperly installed and grounded field wir
44. old gauge High pressure side Low pressure side Service ports Nitrogen gas High pressure liquid Low pressure gas side service valve Side service valve 2 Fill the lines with nitrogen to no more than 594 6 psi 4 1 MPa Monitor the pressure periodically for a minimum of 24 hours If the pressure drops use soapy water to check for leaks Bubbles will occur if joints are not tight Release pressure in pipelines gradually Repair leaks Repeat the previous steps until the pressure remains constant Maintain 145 psi LO MPa of pressure for 15 minutes and check for further leakage If the pressure drops check for leaks and repair them Repeat this step as necessary until 145 psi LO MPa of pressure is maintained for 15 minutes NOW Ss 8 Remove hoses from service ports 30 VRF SVN33A EN Vacuum Drying Procedure VRF SVN33A EN After performing a successful leak test follow this vacuum drying procedure Notes Use tools rated for R 410A Use a vacuum pump that allows vacuuming under 29 7 inH20 Use a vacuum pump with an installed check valve so that pump oil is prevented from flowing into the pipes when the vacuum pump is stopped Completely close both the liquid and the gas side service valves Connectthe refrigerant manifold gauge hoses to the liquid side and gas side pipe service ports and connect the center hose to the vacuum pump Open both manifold gauge valves and turn on the vacuum pump With
45. ost product Company s obligations and liabilities under this Warranty are limited to furnishing replacement equipment or parts at its option FCA Incoterms 2000 factory or warehouse f o b factory or warehouse for US domestic purposes at Company designated shipping point freight allowed to Company s warranty agent s stock location for all non conforming Company manufactured Equipment which have been returned by Customer to Company Returns must have prior written approval by Company and are subject to restocking charge where applicable Equipment material and or parts that are not manufactured by Company are not warranted by Company and have such warranties as may be extended by the respective manufacturer COMPANY MAKES NO REPRESENTATION OR WARRANTY EXPRESS OR IMPLIED REGARDING PREVENTION OF MOLD MOULD FUNGUS BACTERIA MICROBIAL GROWTH OR ANY OTHER CONTAMINATES No warranty liability whatsoever shall attach to Company until Customer s complete order has been paid for in full and Company s liability under this Warranty shall be limited to the purchase price of the Equipment shown to be defective EXCEPT FOR COMPANY S WARRANTY EXPRESSLY SET FORTH HEREIN COMPANY DOES NOT MAKE AND HEREBY EXPRESSLY DISCLAIMS ANY WARRANTIES EXPRESS OR IMPLIED CONCERNING ITS PRODUCTS EQUIPMENT OR SERVICES INCLUDING WITHOUT LIMITATION ANY WARRANTY OF DESIGN MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE OR OTHERS THAT ARE ALLEGED TO ARISE FROM COURS
46. r a period of 12 months from the initial start up or 18 months from date of shipment whichever is less against failure due to defects in material and manufacture and that it has the capacities and ratings set forth in Company s catalogs and bulletins Warranty If the following conditions are met the warrantor extends this basic warranty period to five 5 years from date of start up The system is designed using an approved application tool VRF Select Thesystemis installed by a contractor who has successfully completed a Trane factory training dass A verified commissioning report from the Trane VRF Commissioning Tool is submitted Exclusions and Limitations VRF SVN33A EN Exclusions from this Warranty include damage or failure arising from wear and tear corrosion erosion deterioration modifications made by others to the Equipment repairs or alterations by a party other than Company that adversely affects the stability or reliability of the Equipment vandalism neglect accident adverse weather or environmental conditions abuse or improper use improper installation commissioning by a party other than Company unusual physical or electrical or mechanical stress operation with any accessory equipment or part not specifically approved by Company refrigerant not supplied by Company and or lack of proper maintenance as recommended by Company Company shall not be obligated to pay for the cost of lost refrigerant or l
47. rd conditions High humidity conditions 2 86 F 30 C 85 86 F 30 C gt 85 Pipe size EPDM or NBR Pipe in mm in mm 1 4 6 35 3 8 9 52 3 8 9 3 8 9 Liquid pipe 1 2 12 70 2 50 80 1 2 13 1 2 13 1 4 6 35 1 2 13 3 4 19 3 8 9 52 1 2 12 70 Gas pipe gt 5 8 15 88 3 4 19 1 0 25 3 4 19 05 7 8 22 23 a When installing insulation in any of the following environments use insulation required for high humidity conditions Buildings with close proximity to bodies of water or hot springs or on the side of a hill in which the building is partly covered by earth ceilings frequently exposed to moisture such as in restaurants saunas swimming pools and corridors of dormitories or studios near a frequently used outdoor exit buildings with no ventilation system b Internal temperature of gas pipe is higher than 248 F 120 C 2 Wrap insulation around the entire surface of each pipe including the refrigerant pipes from the indoorunitto the service valves inside the outdoor unit the branch joints distribution header and connection points on each pipe Note For details on insulating branch joints refer to the branch joint installation manual VRF SVN41 Do not wrap the gas and liquid refrigerant pipes together e If gas and liquid pipes are in contact with one another use thicker insulation and make sure the pipes are not pressing tightly against one another Insulation ERN Qo Liq
48. re Start Checks Pre Start Checks VRF SVN33A EN After installation and beforethetestoperation is conducted perform the following pre start checks Avoid Damage to the Communication Circuit Do not measure the communication terminal with an insulation tester Doing so will damage the communication circuit L Ensure that the power and communication cables of the indoor and mini outdoor units are properly connected 2 Before supplying power use a resistance tester to verify that resistance to ground is greater than 30MO 3 Ensure that the indoor units are connected 4 Check for a short circuit between the communication terminal and ground 5 Ensure that the pre start checklist Table 27 has been completed Table 27 Pre start checklist Have you checked the external surface and the inside of the unit for damage e Isthere any possibility of short circuit due to the heat produced by the outdoor unit e Is the place well ventilated and meets recommended requirements for clearances and service Is the outdoor unit installed securely to withstand external forces Mini outdoor unit Installation Have you checked the external surface and the inside of the indoor unit e Is there enough space for service e Have you ensured that the center of the indoor unit is installed horizontally and is level Indoor unit Have you selected the correct pipes Are the liquid and gas valve open Is the total number of
49. remaining gap Make sure the radiant heat vents Figure 14 p 21 are not blocked Refrigerant Piping Installation Examples Example with Y J oints and EEV Kit Example with Y J oints s f Outdoor Outdoor Outdoor unit unit unit Indoor units Indoor units c Indoor units Branch joint 4 Example with distribution headers Outdoor unit Outdoor unit Distribution headers Y joints Distribution header D f m amm nA 7 47 47 47 47 47 47 Indoor units Indoor units VRF SVN33A EN Electrical Wiring Electrical Wiring Observe the following precautions when making electrical connections Refer to wiring diagrams Figure 15 and Figure 16 A WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury NOTICE Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors could result in equipment damage e Make all electrical connections in accordance with electrical codes and ordinances e All wiring must be protected from weather and damage Do not disconnect or change the factory wiring inside the unit Figure 15 Typical system installation wiring wit
50. s injury or equipment or property only damage Do not exceed unit nameplate design pressures when performing a leak test Failure to follow these instructions could result in an explosion causing death or serious injury Notes All required piping pressure tests must be completed in accordance with national and or local codes When leak testing refrigerant systems observe all safety precautions Leaktest only one circuit at a time to minimize system exposure to potentially harmful moisture in the air Use R 410A refrigerant gas as atracer for leak detection and use oil pumped dry nitrogen to develop required test pressures Use tools rated for R 410A Do not remove the valve core of the charging port Perform the leak test with the outdoor unit service valves closed Leak Testing Pipe Connections Use the following procedure for leak testing pipe connections Refrigerant Pipe Damage When performing a leak test use a pressure regulator to prevent an excess amount of nitrogen over 594 6 psi 4 1 MPa from entering the pipes If the pipe is filled with more than the specified amount of nitrogen in a short period of time pipe damage may occur 1 Connectthe refrigerant manifold gauge hoses to the liquid side and gas side service ports on theunit and connectthe center hoseto a nitrogen gas tank fitted with a pressure regulator see Figure 20 Figure 20 Leak testing pipe connections with a manif
51. should be less than 984 ft 300 m H1 Height difference between a mini outdoor unit and indoor unit 164 ft Maximum allowable Mini outdoor unit to Height 50 m H2 Height difference between indoor units lt 49 ft 15 m Y joint Maximum allowable length after Actual length The distance between the first Y joint and the farthest indoor unit lt 131 ft 40 m Example 8 indoor units b c d g lt 131 ft 40 m The distance between the first Y joint and the farthest indoor unit lt 131 ft 40 m Example b c f g lt 131 ft 40 m a If the equivalent length between a mini outdoor unit and the farthest indoor unit exceeds 295 ft 90 m increase the main gas pipe by one size 16 Figure 1L Distribution header connection V Mini outdoor unit Distribution header 4 7X w 4 a H1 b c d ES m 1 2 a 3 t i H2 Indoor units VRF SVN33A EN Figure 12 Y joint and distribution header connection Mini outdoor unit Distribution header Refrigerant Piping H1 Indoor units Storing Refrigerant Piping To prevent foreign materials or water from entering the pipe storing method and sealing method especially during installation is very important Apply correct sealing method depending on the environment see Table 10 Table 10 Refrigerant pipe storage factors
52. sulting in death or serious injury NOTICE Risk of Unit Malfunction Do not leave the front panel open while charging refrigerant If the front panel is open the amount charged into the unit will be incorrect NOTICE Unit Component Damage Open the gas side and liquid side service valves completely after charging the refrigerant If you operate the unit with the service valves closed the unit may be damaged L Attach the liquid manifold hose to the liquid side service port and open the manifold gauge valve Add the liquid refrigerant making sure the refrigerant bottle is held in an upright position Use a scale to determine that the correct amount has been added Close the refrigerant container immediately after adding the refrigerant If you are unable to add all of the refrigerant needed into the liquid side close the liquid side service port and remove the liquid manifold hose 5 Attach the gas manifold hose to the gas side service port and open the manifold gauge valve N Rw Figure 21 Charging additional refrigerant Outdoor unit R 410A A Inject liquid X X fri P refrigerant C C Da S555 Scale Vacuum port Press K2 once to initiate refrigerant charging in cooling mode To determine if the amount of refrigerant added is correct use the automatic refrigerant function see Refrigerant detection operation p 46 8 After charging the refrigerant close the service va
53. te of 176 ft3 h 0 05 m3 h or more Figure 13 Nitrogen flushing while brazing refrigerant pipes Nitrogen Flared Pipe Connections Clutch type and wing nut type flare tools are available for flared pipe connections L Slide the flare nut over the pipe to be flared 2 Slide the end of the pipe into the hole on the flaring bar that fits the pipe leaving a length of pipe determined by tool type see table extending above the flaring bar Clamp it down Length of pipe extending above flare bar Flaring bar Pipe Conventional flare tool R 410A clutch type Clutch type Wing nut type 0 0 020 in 0 04 0 06 in 0 06 0 08 in VRF SVN33A EN 19 Refrigerant Piping 3 Attach the yoke to the flaring bar centering the conical part over the end of the pipe that is extending above the flaring bar 4 Tighten the yoke securely to flare the end of the pipe Flaring bar Copper pipe Flare nut 5 Remove the pipe The end of the pipe that you flared should look like the end of a trumpet See examples of correctly and incorrectly flared pipes Correct Inclined Damaged Cracked Uneven surface thickness 6 Align the pipes and tighten the flare nuts manually and then with a spanner torque wrench applying the torque according to pipe dimensions Outer diameter Connection Flare dimension in mm torque ft Ib in Flare shape in 1 4 6 35 10 3 13 3 ft lb 0 34 0 36 3 8
54. trol On Disables snow prevention control default K6 Off Enables snow prevention control Cooling capacity correction K7 On 44 6 48 2 F 7 9 C default K8 On K7 On 41 0 44 6 F 5 79C K8 Off K7 Off 48 2 51 8 F 9 119C K8 On K7 Off o m o K8 Of 50 0 53 6 F 10 12 C a If enabled the mini outdoor unit fan will operate for 1 minute every 30 minutes to prevent snow build up b Maintain optimal evaporating temperature in the cooling mode if long line lengths exist Refer to cooling long pipe performance data in the technical data book If you upgrade the performance at your discretion low discharge air temperature of an indoor unit might cause discomfort 38 VRF SVN33A EN Table 20 Configuration using DIP switches K9 K12 Control System DI P switch Setting Function description Night time silent modela K9 On Disable K10 On K9 On Mode 1 3 ton 600 rpm K10 Off 4 ton 600 rpm 5 ton 620 rpm K9 Off Mode 2 3 ton 540 rpm K10 On 4 ton 540 rpm 5 ton 560 rpm K9 Off Mode 3 3 ton 480 rpm K10 Off 4 ton 480 rpm 5 ton 500 rpm Heating capacity correction gt c d e K11 On Default 426 7 psi K12 On K11 On Default 28 4 psi K12 Off K11 Off Default 14 2 psi K12 On K11 Off Default 14 2 psi K12 Off a Reduces fan speed for q uiet operation b Maintaining factory default status is recommended
55. uid pipe e Pipe connections between the indoor unit and EEV kit Leave 3 8 in 10 mm of space between gas and liquid side pipes 3 8 in 3 8 in 3 8 in 10 mmm 10 mm 10 mm oO Oo Nu Insulation Gas pipe 32 VRF SVN33A EN Insulating Refrigerant Pipes Overlap insulation to avoid gaps Avoid compressing the insulation as much as possible Besurethere are no cracks or deformities in the insulation at bends in pipes or where hangers are attached to pipes e fnecessary double the insulation to prevent condensation from forming in warm or humid areas 3 Clamp insulation tightly to pipes Insulation Clamp Gas side pipe sit a Liquid side pipe z 4 Cutoff excess insulation VRF SVN33A EN 33 Refrigerant Refrigerant After successful leak testing and vacuum drying calculate the amount of refrigerant needed and then charge the system as explained in this section Calculating the Refrigerant The initial refrigerant quantity given in Table 15 is charged into the unit at the factory Calculate the total amount of additional refrigerant to add to the system as follows Total additional refrigerant total length of 3 8 in 0 52 mm liquid piping x 2 12 oz 60 g total length of 1 4 in 6 35 mm liquid piping x 0 71 oz 20 g total refrigerant quantity for all connected indoor units refer to Table 16 Table 15 Initial refrigerant quantity for each mini outdoor unit model Mod
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