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NORTEK GLOBAL HVAC, LLC
Please read this owner's manual carefully before operation and retain it for future reference
Specifications & illustrations subject to change without notice or incurring obligations
DC Inverter Multi VRF System
Owner's Manual
Heat Pump
Applicable Models:
V5BV-36WMAK
V5BV-48WMAK
V5BV-60WMAK
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Table of Contents
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Summary of Contents for Nortek V5BV-36WMAK
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Page 1: Heat Pump
NORTEK GLOBAL HVAC, LLC DC Inverter Multi VRF System Owner's Manual Heat Pump Applicable Models: V5BV-36WMAK V5BV-48WMAK V5BV-60WMAK Please read this owner’s manual carefully before operation and retain it for future reference Specifications & illustrations subject to change without notice or incurring obligations... - Page 2 DC Inverter Multi VRF System Preface The DC Inverter Multi VRF System, with the most advanced technology in the world, uses eco-friendly refrigerant R410A. For correct installation and operation, please read this manual carefully. Before reading the manual, please note that: (1) Multi VRF system conforms to design standard: ARI 210240-2008 (2) To ensure safety when operating this system, please strictly follow the instructions in this manual.
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Page 3: Table Of Contents
Contents 1 Safety Precautions………………………………………………………………………………………………………………………………………………… 1 2 Product Introduction………………………………………………………………………………………………………………………………………………..3 2.1 Names of Main Parts ............................3 2.2 Combinations of Indoor and Outdoor Units ....................4 2.3 Operating Range ..............................4 3 Preparation before Installation ............................ 5 3.1 Standard Parts ..............................5 3.2 Installation Site .............................. -
Page 4: Safety Precautions
DC Inverter Multi VRF System 1 Safety Precautions WARNING NOTICE: Failure to comply with warning notice could result in property damage, serious personal injury or death... CAUTION NOTICE: Failure to comply with caution notice could result in property damage or personal injury. NOTICE: Failure to comply with notice could result in property damage.. - Page 5 DC Inverter Multi VRF System (24) Never start or stop the air conditioner by plugging or unplugging the power cord. (25) Do not turn off the air conditioner until it runs for at least 5 minutes. Otherwise, the compressor oil return system will malfunction.
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Page 6: Product Introduction
DC Inverter Multi VRF System 2 Product Introduction This equipment uses inverter compressor technology. This allows the compressor to modulate at a range of 15%~100%... 2.1 Names of Main Parts V5BV-36WMAK V5BV-48WMAK V5BV-60WMAK... -
Page 7: Combinations Of Indoor And Outdoor Units
The total capacity of indoor units should be within 50%~135% of that of the outdoor unit. Model Min sets of connectable IDUs Max sets of connectable IDUS V5BV-36WMAK V5BV-48WMAK V5BV-60WMAK Outdoor DC Inverter Multi VRF System units can be connected to various indoor units. -
Page 8: Preparation Before Installation
Appearance Remark User Manual Must be connected to the Wiring (match with last IDU of communication resistance) connection V5BV-36WMAK Corrugated pipe V5BV-48WMAK This part is included in the Liquid side following models: connection pipe V5BV-60WMAK This part is included in the... -
Page 9: Installation Site
DC Inverter Multi VRF System 3.2 Installation Site Check the support structure to verify that it has sufficient load-carrying capacity to support the weight of the unit, and it can be securely mounted. (2) Do not install where there is a danger of combustible gas leakage. (3) Do not install the unit near heat source, steam, or flammable gas. -
Page 10: Piping Work Requirements
DC Inverter Multi VRF System 3.3 Piping Work Requirements Refer to the table below for piping work requirements: R410A Refrigerant System Outer diameter (mm/inch) Wall thickness(mm/ inch) Φ6.35(Φ1/4) ≥0.8(1/32) Φ9.52(Φ3/8) ≥0.8(1/32) Φ12.7(Φ1/2) ≥0.8(1/32) Φ15.9(Φ5/8) ≥1.0(1/25) Φ19.05(Φ3/4) ≥1.0(1/25) -
Page 11: Installation Instruction
DC Inverter Multi VRF System 4 Installation Instruction NOTICE! Graphics here are for reference only. Please refer to actual products. 4.1 Dimension of Outdoor Unit and Mounting Hole Unit Outline and Installation Dimension: Fig.3 Unit:mm(inch) Model V5BV-36WMAK 1345 V5BV-48WMAK (35-3/8) (13-3/8) (53) (22-1/2) (15) -
Page 12: Connection Pipe
DC Inverter Multi VRF System 4.2 Connection Pipe 4.2.1 Schematic Diagram of Piping Connection Fig.4... - Page 13 Y type branch joint is used to connect indoor and outdoor units. Connecting method is shown in the figure below: NOTICE! Equivalent length of one Y-type branch is 0.5m(1-1/2 feet). Fig.5 Allowable Length and Height Difference of Connection Pipe Piping parameters of V5BV-36WMAK V5BV-48WMAK V5BV-60WMAK Allowable value Fitting pipe feet...
- Page 14 Fig. 6 Dimension of outdoor connection pipe: Pipe dimension Basic module Gas pipe Liquid pipe (mm/inch) (mm/inch) φ15.9 φ9.52 V5BV-36WMAK (φ5/8) (φ3/8) φ15.9 φ9.52 V5BV-48WMAK (φ5/8) (φ3/8) Φ19.05 φ9.52 V5BV-60WMAK (φ3/4) (φ3/8)
- Page 15 DC Inverter Multi VRF System Refrigerant system Total capacity of downstream indoor units C (Btu/h) Model C< 68200 FQ01A 68200 C 102400 FQ01B 102400 C 238800 Y type branch FQ02 238800 C 460600 FQ03 460600 C FQ04 4.2.5 Dimension of Pipe between Indoor Branches Select pipe between indoor branches according to the capacity of downstream indoor units;...
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Page 16: Installation Of Connection Pipe
DC Inverter Multi VRF System 4.2.6 Dimension of Pipe between Indoor Branch and IDU Dimension of pipe between indoor branch and IDU should be consistent with the dimension of indoor pipe. Fig. 9 Rated capacity of IDU Gas pipe Liquid pipe (mm/inch) C(Btu/h) (mm/inch) Φ9.52... - Page 17 DC Inverter Multi VRF System 4.3.1 Flaring Process (1) Use pipe cutter to cut pipe to avoid misshaping. (2) Keep the pipe downward in case cutting scraps get into the pipe. Clear away the burrs after cutting. (3) Remove the flared nut from the valve on both the indoor and outdoor units. Then use flaring tool to fix the flared nut into the pipe (as shown in Fig.10).
- Page 18 DC Inverter Multi VRF System Use sponge to wrap the un-insulated connection pipe and joint. Then secure the sponge tightly with plastic tape. Connection pipe should not be supported by the unit. The bending angle of piping should not be too small; otherwise the piping might have cracks. Please use a pipe bender to bend the pipe.
- Page 19 DC Inverter Multi VRF System As shown in Fig.16 and Fig.17, open the outermost soundproof cotton and place a fire barrier between compressor and straight pipe. Use a soldering gun to unsolder straight pipe 1 and straight pipe 2. Install connection pipe 1 and connection pipe 2 to the corresponding position and then seal the apertures with welding rod.
- Page 20 DC Inverter Multi VRF System 4.3.5 Installation of Y-type Branch (1) Y-type Branch Fig. 18 (2) Y-type branch has several pipe sections with different dimensions, which facilitates matching to various copper pipes. Use pipe cutter to cut in the middle of the pipe section and remove burrs.
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Page 21: Disassembly Of Compressor Feet
DC Inverter Multi VRF System Fig. 20 3) When wrapping the tape, half of the width of the tape should cover the previous layer of tape. Don’t wrap the tape too tight, or insulation effectiveness will be comprised. 4) After wrapping the pipe, apply sealing material around the hole on the wall. Thermal insulating material shall be able withstand the pipe temperature. -
Page 22: Vacuum Pumping, Refrigerant Adding
(3) Use vacuum pump to withdraw the air inside indoor unit and connection pipe from the outdoor valve, as shown below. Fig. 22 4.5.2 Adding Refrigerant (1) Refrigerant quantity of outdoor unit before delivery: Model V5BV-36WMAK V5BV-48WMAK V5BV-60WMAK Refrigerant Qty (kg/lb) (14) (11) (11) (1) The refrigerant amount charged before delivery doesn’t include the amount that needs to be... - Page 23 DC Inverter Multi VRF System Diameter of Φ22.2 Φ19.05 Φ15.9 Φ12.7 Φ9.52 Φ6.35 liquid pipe (Φ7/8) (Φ3/4) (Φ5/8) (Φ1/2) (Φ3/8) (Φ1/4) (mm/inch) kg/m 0.35 0.25 0.17 0.11 0.054 0.022 oz/inch 0.314 0.224 0.152 0.099 0.048 0.020 NOTICE! Liquid pipe that is within 20m (65 feet) doesn’t need added refrigerant. First confirm that there is no leakage from the system.
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Page 24: Electric Wiring
DC Inverter Multi VRF System ¼ inch: D+b+c+d = 16-1/2 + 10 + 6-1/2 + 3 = 36 feet NOTICE! Liquid pipe that is within 20m(65-5/8 feet) doesn’t need to be added with refrigerant. Therefore, the minimum quantity of additional refrigerant = (23-20)×0.054+11×0.022 0.404kg(14oz) 4.6 Electric Wiring All electrical installation must be performed by qualified technicians in accordance with local and national... - Page 25 DC Inverter Multi VRF System Fig. 24 Fig. 25 Fig. 26 (3). How to fix connection cord and power cord by cord clamp After passing the connection cord and power cord through the insulation tube, fasten it with the cord clamp.(Fig. 26) Before starting work, check that power is turned off.
- Page 26 DC Inverter Multi VRF System 4.6.2 Wiring Diagram (1) Connection of power cord and communication wire Separate power supply for IDU and ODU Fig.27 Connection of power cord and communication wire for IDU and ODU (2) The wiring diagram for power cord and communication wire of outdoor unit. Fig.27 There are two wiring diagrams for communication wires of indoor/outdoor units and remote monitor:...
- Page 27 Max Ckt, Bkr Size/Fusible Min. Circuit Ampacity Model Power supply Size/Disjoncteur Max. Max. V5BV-36WMAK 208/230V~ 60Hz V5BV-48WMAK 208/230V~ 60Hz V5BV-60WMAK 208/230V~ 60Hz Selection of circuit breaker and power cord in the above table is based upon unit’s maximum power (maximum current).
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Page 28: Check Items After Installation And Test Operation
DC Inverter Multi VRF System 5 Check Items after Installation and Test Operation 5.1 Check Items after Installation Possible conditions due to improper Check items Check installation Each part of the unit is installed securely? Unit may fall, shake or emit noise. Gas leakage test is taken or not? Insufficient cooling (heating) capacity Unit gets proper thermal insulation or not? - Page 29 DC Inverter Multi VRF System PC with applicable debugging software. Make sure unit’s real-time data can be checked through this computer. Information on the debugging software can be found in the Service Manual. (9) Before test operation, make sure unit is powered on and compressor has been preheated for more than 8 hours.
- Page 30 DC Inverter Multi VRF System within range. And restart debugging from step 01. Rated capacity ratio of IDU is too low. Change the combination of IDU and ODU to make the ratio within range. And restart debugging from step 01. Outdoor component’s error.
- Page 31 DC Inverter Multi VRF System Debugging for cooling mode. If no malfunction occurs for 20min when compressor is running, then system will start step 17; If malfunction 15_ Cooling occurs, unit will display as shown below: debugging Malfunction occurs when debugging for cooling Error mode.
- Page 32 DC Inverter Multi VRF System ●In cool mode, the thermal electronic Opening angle of expansion valve remains 480PLS. thermal EXV ●In heat mode, the adjustable opening angle of EXV is 60~480PLS. Compressor’s Changes from 10Hz~80Hz. operating freq Compressor’s When compressor works normally, the operating current current is no more than 18.4A.
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Page 33: Common Malfunctions And Troubleshooting
DC Inverter Multi VRF System 6 Common Malfunctions and Troubleshooting If there is a noticeable malfunction (e.g. unpleasant smell, or unusual noise), turn unit off and disconnect power immediately. Then contact qualified service center. If unit continues operation, it may get damaged and lead to electric shock or fire hazard. -
Page 34: Error Indication
DC Inverter Multi VRF System 7 Error Indication Inquiry method of error indication: combine division symbol and content symbol to check the corresponding error. For example, division symbol L and content symbol 4 (L4) means over-current protection. Content symbol Division symbol Auxiliary Freeze... - Page 35 DC Inverter Multi VRF System Content symbol Division symbol Inquiry of Unit waiting for compressor Defrosting Oil-return Online test debugging operation parameters Setting of upper Status limit of SE operation Setting of IDU/ODU setting of defrosting capacity system cycle K1 distribution ratio...
- Page 36 DC Inverter Multi VRF System Content symbol Division symbol 1-to-more: Alarm due to 1-to-more: IDU series bad air Power supply Mode shock No main IDU number of IDU quality is insufficient is inconsistent inconsisten (Fresh air unit) Malfunction Malfunction PCB of wired of exit-tube Malfunction of address of...
- Page 37 DC Inverter Multi VRF System Content symbol Division symbol Models for IDU and ODU are not matched Malfunction of Abnormal Malfunction of air-outlet setting for indoor CO temperature capacity sensor (fresh sensor(Fresh button air unit) air unit) Drop protection of discharge temperature sensor of...
- Page 38 DC Inverter Multi VRF System Content symbol Division symbol Communication malfunction Overflow between IDU distribution Debugging and the of IP receiving lamp address plate Long-distance Emergency Limit Status emergency stop of operation stop operation...
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Page 39: Function Setting Of Outdoor Unit
DC Inverter Multi VRF System 8 Function Setting of Outdoor Unit When debugging is finished, press SW3 on the master unit and unit will be ready for function setting. Default display of outdoor unit’s main board is as shown below: LED1 LED2 LED3... -
Page 40: Cool & Heat Function
DC Inverter Multi VRF System If selection is made for 5min, unit will exit and resume displaying the current status. 8.2 Cool & Heat Function This function can set operation modes and prevent mode conflict that is caused by different settings for different indoor units. -
Page 41: Restore Factory Defaults
DC Inverter Multi VRF System Press SW7 to confirm. When system enters this function, main board of outdoor unit will display as shown below: LED1 LED2 LED3 Function code Display Current progress/mode Display Current status Display Then unit will be in compulsory defrosting mode. Once unit is under compulsory defrosting, this mode can only be stopped when requirements for exit are met. -
Page 42: Maintenance And Care
DC Inverter Multi VRF System 9 Maintenance and Care Regular check, maintenance and care can extend unit’s service life. Please have a dedicated person in charge of the management of air conditioners. 9.1 Outdoor Heat Exchanger Outdoor heat exchanger shall be cleaned regularly, which is at least once every two months. You can use a dust catcher with nylon brush to clean away the dust on the heat exchanger. -
Page 43: After-Sales Service
DC Inverter Multi VRF System 10 After-sales Service If there’s quality defect or other problems in the product, please contact your authorized distributor for help. Warranty must be based on the following conditions: (1) Product’s initial startup must be performed by professional technicians. (2) Only approved spare parts are used, (3) All instructions of unit operation and maintenance in this manual must be strictly followed according to set period and set frequency. - Page 44 Specifications & illustrations subject to change without notice or incurring obligations. O’Fallon, MO (12/15) © Nortek Global HVAC, LLC 2015. All Rights Reserved. 546E-1215...
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