Installation Variable Refrigerant Flow (VRF) System Mini Outdoor Unit Series Models: 4TVH0036B100NB 4TVH0048B100NB 4TVH0053B100NB SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning 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.
Introduction Read this manual thoroughly before operating or servicing this unit. Warnings, 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 situation which, if not avoided, could result in death or serious injury.
Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Warnings, Cautions, and Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Important Environmental Concerns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Important Responsible Refrigerant Practices . . . . . . . . . . . . . . . . . . . . . . . 2 Preparing for Installation . . . . . . . . . . . . . . . . .
Vacuum Drying Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Insulating Refrigerant Pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Calculating the Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparing for Installation Preparing for Installation Unit Dimensions and Weights Table 1. Unit dimensions and weights Dimensions (WxHxD) in. (mm) Unit model number Weight lb (kg) 4TVH0036B100NB 4TVH0048B100NB 220.5 (100.0) 37 (940) x 47.6 (1210) x 13 (330) 4TVH0053B100NB Shipping dimensions (WxHxD) in. (mm) 39.2 (995) x 53.9 1368) x 16.8 (426) 227.1 (103.0) Shipping weight lb (kg) 231.5 (105.0) 238.1 (108.0) Dimensional Drawing Unit : inch (mm) 0.98 (25) 14.
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. Table 2.
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 1.
Preparing for Installation 12 (300) Figure 3. Minimum service clearances for multiple mini outdoor unit installations 24 (600) 24 (600) 24 (600) 24 (600) 24 (600) 60 (1500) 24 (600) 120 (3000) 60 (1500) 12 (300) 12 (300) 120 (3000) 12 (300) Location Considerations Choose an installation location based on the following considerations. • Install the outdoor unit: – On a supporting structure that can bear the weight of the outdoor unit.
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 ODU Sea Protection walls ODU Sea breeze Sea breeze ODU ODU Sea Sea – 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.
Figure 4. Moving the mini outdoor unit Moving by hand Moving with a crane 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. • On a surface that is strong enough to support the unit and to minimize noise.
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 1 in.
Unit Installation Figure 7. Anchor bolt positions 15.1 (384) 13.0 (330) 14.2 (360) Anchor bolt holes (4) 24.4 (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: 1. 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.
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: • Use insulated, unwelded, degreased, 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 at least 3002.
Refrigerant Piping Branch Joint Selection Table 5 specifies the first branch joint according to mini outdoor unit capacity. Table 5. First branch joint according to mini outdoor unit capacity Mini outdoor unit total capacity (ton) 3 4 5 Branch joint model 4YDK1509B0051A 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.
Refrigerant Piping Refrigerant Piping Maximum Length and Height Differences Table 8.
Refrigerant Piping Table 9.
Refrigerant Piping Figure 12. Y-joint and distribution header connection Mini outdoor unit Distribution header 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 Piping Installing Refrigerant Piping 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.
Refrigerant Piping Nitrogen Flushing While Brazing NOTICE 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 regulator to maintain a flow rate of 1.76 ft3/h (0.05 m3/h) or more. Figure 13.
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. Yoke 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 surface Cracked Uneven thickness 6.
Refrigerant Piping Connecting Piping to the Mini Outdoor Unit Important: Ensure that all pipe connections are accessible for servicing and maintenance. Pipes can be connected to the mini outdoor unit at the 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: high pressure (liquid side) Service valve: low pressure (gas side) Radiant heat vents Liquid pipe Gas pipe 2.
Refrigerant Piping 4. After making electrical connections (see “Electrical Wiring” p. 23) and insulating the pipes (see “Insulating Refrigerant Pipes” p. 32), replace the pipe cover and close the remaining gap. Make sure the radiant heat vents (Figure 14, p. 21) are not blocked.
Electrical Wiring Electrical Wiring Observe the following precautions when making electrical connections. Refer to wiring diagrams (Figure 15 and Figure 16). 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.
Electrical Wiring Figure 16. Typical system installation wiring with external EEV kit circuit breaker or disconnect Mini outdoor unit Single-phase, 2-wire, 208-230 V circuit breaker or disconnect Communication between outdoor and indoor units See Figure 17, p. 26 for wiring details. Notes: Ground Power cable • 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.
Electrical Wiring Power 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 86ºF (30ºC) and single multi-conductor cables.
Electrical Wiring 2. Cut the 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 N.m) M4 0.9–1.1 lbf/ft (1.2–1.5 M5 1.5–1.8 lbf/ft (2.0–2.5 N.m) Communication: F1, F2 Single-phase AC power: L1, L2 3.
Electrical Wiring 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.
Electrical Wiring • If 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 • Ensure that the grounding resistance is <100 . Voltage to ground is ≤ 150 V • If a circuit breaker is installed that disconnects the circuit within 0.5 seconds, the allowable grounding resistance is 30–500 .
Leak Testing Pipe Connections Leak Testing Pipe Connections Before leak testing pipe connections, read all safety precautions and notes. 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.
Leak Testing Pipe Connections Use the following procedure for leak testing pipe connections. NOTICE 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.
Vacuum Drying Procedure 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 inH2O. • 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. 1. Completely close both the liquid and the gas side service valves. 2.
Insulating Refrigerant Pipes Insulating Refrigerant Pipes After determining that there are no leaks in the refrigerant pipes, insulate them as described: 1. Use Table 14 to select the insulation thickness according to pipe size and humidity conditions. Table 14. Pipe insulation selector Insulation Type High humidity conditions(a) 86°F (30°C), 85% Standard conditions 86°F (30°C), < 85% Pipe size in. (mm) Pipe Liquid pipe 1/4 (6.35) – 3/8 (9.52) EPDM or NBR (in. (mm) 3/8 (9) 3/8 (9) 1/2 (12.
Insulating Refrigerant Pipes • Overlap insulation to avoid gaps. • Avoid compressing the insulation as much as possible. • Be sure there are no cracks or deformities in the insulation at bends in pipes or where hangers are attached to pipes. • If necessary, double the insulation to prevent condensation from forming in warm or humid areas. 3. Clamp insulation tightly to pipes. Insulation Clamp Gas side pipe Liquid side pipe 4. Cut off excess insulation.
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.
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: WARNING Hazard of Explosion and Deadly Gases! Do not heat the refrigerant container to speed up the charging process. An explosion could result, resulting in death or serious injury. NOTICE Risk of Unit Malfunction! Do not leave the front panel open while charging refrigerant.
Connecting the Drain Hose Connecting the Drain Hose When using the air conditioner in the heating mode, ice may accumulate. When the unit is 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. Bottom of outdoor unit 0.51 in. (13 mm) 1.96 in.
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. 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.
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 SW01 and SW02 SW01/SW02 Total number of installed indoor units Use to set total number of installed indoor units. Tens digit/Ones digit Notes: 1. For example, if 3 indoor units are installed: Set SW01 to “0”; set SW02 to “3”. 2. Set at mini outdoor unit only. Table 19.
Control System Table 20. Configuration using DIP switches K9–K12 DIP switch Setting Function description Night-time silent mode(a) K9 On K10 On K9 On K10 Off K9 Off K10 On K9 Off K10 Off Disable Mode 1 3 ton: 600 rpm 4 ton: 600 rpm 5 ton: 620 rpm Mode 2 3 ton: 540 rpm 4 ton: 540 rpm 5 ton: 560 rpm Mode 3 3 ton: 480 rpm 4 ton: 480 rpm 5 ton: 500 rpm Heating capacity correction(b),(c),(d),(e) K11 On K12 On K11 On K12 Off K11 Off K12 On K11 Off K12 Off Default: 426.
Control System Table 21.
Control System Initiating System Operations 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 1 (hold for 5 seconds) Operation 7-segment display: Digits 1 and 2 Test operation 1 Refrigerant charging in heating mode 2 Test operation in heating mode 3 Pump down in heating mode 4 Vacuum 5 Completion Blank Table 23.
Control System Monitoring System Settings Buttons K4 is used to monitor system settings and software versions. Table 25. Button K4 Number of times button K4 is pressed 7-segment display Setting 1 Current frequency Description Digits 1, 2, 3, 4 15 Hz 1,0,1,5 37.0 psi (2.6 kg/cm2)(a) 2 Low pressure 3 Outdoor temperature 74.3°F (23.5°C) 3,2,3,5 4 Discharge temperature 177.3°F (80.
Pre-Start Checks Pre-Start Checks After installation and before the test operation is conducted, perform the following pre-start checks: NOTICE Avoid Damage to the Communication Circuit! Do not measure the communication terminal with an insulation tester. Doing so will damage the communication circuit. 1. Ensure that the power and communication cables of the indoor and mini outdoor units are properly connected. 2.
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) Indoor temperature: °F (°C) 104 (40) 86 (30) 68 (20) Cooling 50 (10) Heating 32 (0) 14 (-10) -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.
Test Operation Note: When power is supplied to the outdoor unit, it will check for and verify communications with the indoor units. 2. Ensure that the front of the outdoor unit is closed. 3. 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. • UP (for “unprepared”) will appear on the digital display. When the test operation has completed, the display will clear.
Refrigerant detection operation Refrigerant detection operation Perform the refrigerant detection operation only under the following conditions: • 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.
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 WARNING Refrigerant under High Pressure! Failure to follow code concerning could result in an explosion which could result in death or serious injury or equipment damage.
Service: Pump Down Process Pump Down Process NOTICE 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. 1. 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.) 3.
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 for these products which are sold by Trane and applied in accordance with Trane specifications.
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.
