SAFETY WARNINGOnly qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating,

10 VRF-SVN33A-ENFigure 4. Moving the mini outdoor unitUnit InstallationFollow these guidelines for installing the mini outdoor unit.Important: The man

VRF-SVN33A-EN 11Unit InstallationMinimizing VibrationWhen installing multiple mini outdoor units side by side, or when there is a need to minimize uni

12 VRF-SVN33A-ENUnit InstallationFigure 7. Anchor bolt positionsIf you cannot attach the unit to the base or if the unit needs additional support, se

VRF-SVN33A-EN 13Refrigerant PipingRefrigerant PipingThis section contains information on selecting, storing, and connecting refrigerant piping.Selecti

14 VRF-SVN33A-ENRefrigerant PipingBranch Joint SelectionTable 5 specifies the first branch joint according to mini outdoor unit capacity. Table 6 spe

VRF-SVN33A-EN 15Refrigerant PipingRefrigerant Piping Maximum Length and Height Differences Figure 9. Y-joint connection Figure 10. Y-joint and EEV kit

16 VRF-SVN33A-ENRefrigerant PipingFigure 11. Distribution header connectionTable 9. Maximum refrigerant piping length and height differences for inst

VRF-SVN33A-EN 17Refrigerant PipingFigure 12. Y-joint and distribution header connection Storing Refrigerant PipingTo prevent foreign materials or wate

18 VRF-SVN33A-ENRefrigerant PipingInstalling Refrigerant Piping Overview1. Cut or extend field-supplied piping as needed. To extend pipes, braze or

VRF-SVN33A-EN 19Refrigerant PipingNitrogen Flushing While BrazingWhile brazing refrigerant pipes, flush them with nitrogen gas. Use a pressure regulat

2 VRF-SVN33A-ENIntroductionRead this manual thoroughly before operating or servicing this unit.Warnings, Cautions, and NoticesSafety advisories appea

20 VRF-SVN33A-ENRefrigerant Piping3. Attach the yoke to the flaring bar, centering the conical part over the end of the pipe that is extending above

VRF-SVN33A-EN 21Refrigerant PipingConnecting Piping to the Mini Outdoor UnitImportant: Ensure that all pipe connections are accessible for servicing a

22 VRF-SVN33A-ENRefrigerant Piping4. After making electrical connections (see “Electrical Wiring” p. 23) and insulating the pipes (see “Insulating Re

VRF-SVN33A-EN 23Electrical WiringElectrical WiringObserve the following precautions when making electrical connections. Refer to wiring diagrams (Figu

24 VRF-SVN33A-ENElectrical WiringFigure 16. Typical system installation wiring with external EEV kitGroundPower cablecircuit breaker or disconnectCom

VRF-SVN33A-EN 25Electrical WiringPower Wiring• Multi-pole circuit breaker or disconnect is required to fully isolate the unit from all power. • Instal

26 VRF-SVN33A-ENElectrical Wiring2. Cut the power cable to an appropriate length and connect it to terminals L and N in the power supply box with a s

VRF-SVN33A-EN 27Electrical WiringGroundingImportant: Grounding must be done by a qualified electrician. The unit cannot be ground by a gas or water pi

28 VRF-SVN33A-ENElectrical Wiring• If you have grounded the unit to a grounding terminal or electrical panel, ensure that the resistance meets the re

VRF-SVN33A-EN 29Leak Testing Pipe ConnectionsLeak Testing Pipe ConnectionsBefore leak testing pipe connections, read all safety precautions and notes.

Table of ContentsVRF-SVN33A-EN 3Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30 VRF-SVN33A-ENLeak Testing Pipe ConnectionsUse the following procedure for leak testing pipe connections. 1. Connect the refrigerant manifold gauge

VRF-SVN33A-EN 31Vacuum Drying ProcedureAfter performing a successful leak test, follow this vacuum drying procedure:Notes:• Use tools rated for R-410A

32 VRF-SVN33A-ENInsulating Refrigerant PipesInsulating Refrigerant PipesAfter determining that there are no leaks in the refrigerant pipes, insulate

VRF-SVN33A-EN 33Insulating Refrigerant Pipes• Overlap insulation to avoid gaps.• Avoid compressing the insulation as much as possible.• Be sure there

34 VRF-SVN33A-ENRefrigerantRefrigerantAfter successful leak testing and vacuum drying, calculate the amount of refrigerant needed and then charge the

VRF-SVN33A-EN 35RefrigerantCharging the RefrigerantAfter calculating the correct amount of refrigerant needed by the system (see “Calculating the Refr

36 VRF-SVN33A-ENConnecting the Drain HoseConnecting the Drain HoseWhen using the air conditioner in the heating mode, ice may accumulate. When the un

VRF-SVN33A-EN 37Control SystemControl SystemThe control board contains a 7-segment display, three DIP switches, two rotary switches, and four buttons,

38 VRF-SVN33A-ENControl SystemConfiguring the SystemThe control board contains two rotary switches and three DIP switches (shown in Figure 22). The f

VRF-SVN33A-EN 39Control SystemTable 20. Configuration using DIP switches K9–K12DIP switch Setting Function descriptionNight-time silent mode(a)(a) Red

4 VRF-SVN33A-ENVacuum Drying Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Insulating Refri

40 VRF-SVN33A-ENControl SystemTable 21. System configuration using DIP switches K13–K16DIP switchMaximum current per unit model4TVH0036B100NB 3 ton4T

VRF-SVN33A-EN 41Control SystemInitiating System OperationsButtons K1, K2, and K3 are used to initiate system operations. The first two digits of the 7

42 VRF-SVN33A-ENControl SystemMonitoring System SettingsButtons K4 is used to monitor system settings and software versions. Table 25. Button K4Numb

VRF-SVN33A-EN 43Pre-Start ChecksPre-Start ChecksAfter installation and before the test operation is conducted, perform the following pre-start checks:

44 VRF-SVN33A-ENTest OperationTest OperationAfter all pre-start checks (refer to “Pre-Start Checks” p. 43) have been have been completed, run the tes

VRF-SVN33A-EN 45Test OperationNote: When power is supplied to the outdoor unit, it will check for and verify communications with the indoor units.2. E

46 VRF-SVN33A-ENRefrigerant detection operationRefrigerant detection operationPerform the refrigerant detection operation only under the following co

VRF-SVN33A-EN 47Service: Pump Down ProcessService: Pump Down ProcessThe pump down process pulls all of the refrigerant in the system into the outdoor

48 VRF-SVN33A-ENService: Pump Down ProcessPump Down Process1. Follow the procedure for “Collecting Refrigerant into a Refrigerant Container” p. 47”.2

VRF-SVN33A-EN 49Warranty For Trane Advantage™ VRF Systems and Related AccessoriesWarranty For Trane Advantage™ VRF Systems and Related AccessoriesProd

VRF-SVN33A-EN 5Preparing for InstallationPreparing for InstallationUnit Dimensions and Weights Dimensional Drawing Table 1. Unit dimensions and weight

50 VRF-SVN33A-ENWarranty For Trane Advantage™ VRF Systems and Related Accessories

Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in creating and sustaining safe, com

6 VRF-SVN33A-ENPreparing for InstallationMaximum Quantity of Indoor Units by Mini Outdoor Unit CapacityTo prevent reducing indoor unit capacity, the

VRF-SVN33A-EN 7Preparing for InstallationService ClearancesInstall units as shown in the illustrations below (Figure 1, Figure 2, and Figure 3), obser

8 VRF-SVN33A-ENPreparing for InstallationFigure 3. Minimum service clearances for multiple mini outdoor unit installationsLocation ConsiderationsChoo

VRF-SVN33A-EN 9Preparing for Installationcirculation. Consult an installation expert about taking anti-corrosion measures, such as removing salinity o