Page 1 MRV5-H Service Manual...
Page 2: Table Of Contents
CONTENTS 1. Cautions in Repair ........................1 1.1Safety Cautions ........................1 1.2 Post Repair Cautions.......................3 1.3 Inspection after Repair ......................5 2. General Information ........................6 2.1 Energy Saving .........................6 2.2 Multi-Link ..........................7 2.3 Comfort ............................7 2.3.1 Move Eye Intelligent System (Optional) ................7 2.3.2 Precise Temperature Control at ±1F ..................7 2.4 Feature............................8 2.5 Products Lineup ........................10 2.5.1 Nomenclature ........................10...
Page 3 9.1 MRV-link Introduction .......................145 9.2 Gas-liquid Segregator Replacement................149 10. MRV-Link ..........................151 10.1 MRV-Link Introduction .......................151 10.2 MRV-Link Benefits ......................153 10.3 MRV-Link Specification .....................154 10.4 Wiring Figure ........................154 10.5 Dimension..........................155 10.6 Installation Requirements for MRV-Link ................156 10.7 MRV-Link Troubleshooting ....................157 11. Appendix ..........................160 11.1 Wiring Diagrams and PCB Photo ..................160 11.2 Sensor Characteristic Table ....................162 11.3 Standard for Evacuation, Pressurization, Refrigerant Recharge ........163...
Page 4: Cautions In Repair
PART 1 1. Safety Cautions Cautions and warnings Read these SAFETY CONSIDERATIONS carefully before installing air conditioning equipment. Make sure that the unit operates properly during the start-up operation after completing installation. Instruct the customer on how to operate and maintain the unit. Inform customers that they should store this Installation manual with the operation manual for future reference.
Page 5 Warning Do not start or stop the equipment by switching the unit disconnect. Switching the disconnect to operate the equipment can cause electrical shock or fire. Caution Do not attempt to repair equipment with wet hands. Working on the equipment with wet hands can cause an electrical shock.
Page 6: Post Repair Cautions
1.2 Post Repair Cautions Warning Be sure to use parts listed in the service parts list and appropriate tools for the applicable model equipment for repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools can cause an electrical shock, excessive heat generation or fire.
Page 7 Warning Do not mix refrigerant gasses in the sealed refrigerant system. Refrigerant R410A is the only gas allowed in the system. High pressures, internal damage and possible personal injury will result if air is allowed to enter the system. Locate any refrigerant leaks and make necessary repairs before replenishing refrigerant.
Page 8: Inspection After Repair
1.3 Inspection after Repair Warning Check all power connections for tightness. Loose connections can cause electrical shock or fire. Electrical wire insulation should be free of scratches, cracking and gouging. Replace all conductors with non-damaged insulation otherwise electric shock, heat generation or fire may result. Do not splice electrical wires and cabling.
Page 9: General Information
2. General Information 2.1 Energy Saving Super efficiency Optimized design, intelligent control with full DC inverter EVI compressors mean higher efficiency and √ minimized scroll gas leakage and greater dependability Top 3 ranking in EER/IEER/COP/SCHE √ Low ambient performance in heating with operating range down to -13 degrees Fahrenheit. √...
Page 10: Multi-Link
2.2 MRV-Link Wrong connect Wired link error Complicated com link √ Labor saving Cable √ Automatic network connection aging √ Convenient maintenance. √ Stable performance √ Total Cost saving is about 30% MRV-link / Zigbee 2.3 Comfort 2.3.1 Move Eye Intelligent System (Optional) The occupancy sensor will check if there is nobody in the room, then change the temperature setting.
Page 11: Feature
2.4 Feature System Introduction Typical 3 pipe system Office Heating indoor Lounge Cooling units room indoor units Office Meeting room What’s is MRV5-HQ •Dual model Heat pump and Heat recovery model 2-pipe system 3-pipe system...
Page 12 Variable operation mode in one system High pressure gas pipe Suction gas pipe Liquid pipe Refrigerant pipe not flow Cooling&Heating Heating Heating Heating Stop Cooling Cooling Cooling Outdoor Structure Vp (valve pipe) box structure overview Overview • Specially designed for MRV5-HQ, greatly reduced the volume •...
Page 13: Products Lineup
2.5 Products Lineup 2.5.1 Nomenclature Indoor Unit Capacity Range (Ton) 1.25 Capacity Index (Kbtu) One Way Cassette MVAO 005ME 007ME 009ME 012ME — — — — Compact Cassette MVAB 005MV 007MV 009MV 012MV — 018MV — — (2*2) Large Cassette (3*3) MVAL —...
Page 14 Outdoor Unit Capacity Range Capacity Range (Ton) Power Supply Standard Capacity Index (Kbtu) 208/230V Dual Model 072ME 096ME 120ME 144ME 168ME 192ME 216ME 240ME 460V Capacity Range (Ton) Capacity Index (Kbtu) 208/230V Dual Model 264ME 288ME 312ME 336ME 360ME 384ME 460V Capacity Range (Ton) Power Supply...
Page 15 Model Name MVHQ360ME2CA MVHQ384ME2CA MVHQ408ME2CA MVHQ432ME2CA Outdoor Unit 1 MVHQ168ME2CA MVHQ192ME2CA MVHQ192ME2CA MVHQ216ME2CA Outdoor Unit 2 MVHQ192ME2CA MVHQ192ME2CA MVHQ216ME2CA MVHQ216ME2CA Model Name MVHQ456ME2CA Outdoor Unit 1 MVHQ168ME2CA Outdoor Unit 2 MVHQ168ME2CA Outdoor Unit 3 MVHQ120ME2CA Dual Model 460V Model Name MVHQ072ME4CA MVHQ096ME4CA MVHQ120ME4CA...
Page 16: External Appearance
2.5.2 External Appearance Indoor Unit One Way Cassette Compact Cassette (2*2) MVAO005ME2AA MVAB005MV2AA MVAO007ME2AA MVAB007MV2AA MVAO009ME2AA MVAB009MV2AA MVAO012ME2AA MVAB012MV2AA MVAB018MV2AA Large Cassette (3*3) MVAL007ME2AA Slim Duct MVAL009ME2AA MVAL012ME2AA MVAD007MV2AA MVAL015ME2AA MVAD009MV2AA MVAL018ME2AA MVAD012MV2AA MVAL024ME2AA MVAD018MV2AA MVAL030ME2AA MVAD024MV2AA MVAL036ME2AA MVAL042ME2AA MVAL048ME2AA Medium Static Duct MVAM007ME2AA MVAM009ME2AA...
Page 17 Outdoor Units MVHQ072ME2CA MVHQ096/120/144ME2CA MVHQ168/192/216/240ME2CA MVHQ072ME4CA MVHQ096/120/144ME4CA MVHQ168/192/216/240ME4CA MVHQ264/288ME2CA MVHQ312/336ME2CA MVHQ264/288ME4CA MVHQ312/336ME4CA MVHQ456ME2CA MVHQ360/384/408/432ME2CA MVHQ456ME4CA MVHQ360/384/408/432ME4CA...
Page 18: Combination Of Outdoor Units
2.5.3 Combination of Outdoor Units Module System Number Model Name Capacity of Units (Ton) MVHQ072ME2CA • MVHQ072ME4CA MVHQ096ME2CA • MVHQ096ME4CA MVHQ120ME2CA • MVHQ120ME4CA MVHQ144ME2CA • MVHQ144ME4CA MVHQ168ME2CA • MVHQ168ME4CA MVHQ192ME2CA • MVHQ192ME4CA MVHQ216ME2CA • MVHQ216ME4CA MVHQ240ME2CA • MVHQ240ME4CA MVHQ264ME2CA • •...
Page 19: Refrigerant Circuit
3. Refrigerant Circuit MVHQ072/096/120ME2CA-Cooling Operation MVHQ072/096/120ME4CA-Cooling Operation SC Heat Liquid Condenser Heat Toci1 Exchanger 1 LEVa1 Exchanger Pipe Tdef1 Tliqsc Tdef2 Condenser Heat LEVb Toci2 Exchanger 2 LEVa2 Tsci By-pass Valve Tsco 4.1Mpa 4WV2 4WV3 4WV1 High pressure gas Pipe HPS1 SV181 Gas-liquid Segregator...
Page 20 MVHQ144ME2CA-Cooling Operation MVHQ144ME4CA-Cooling Operation SC Heat Liquid Condenser Heat Exchanger 1 LEVa1 Exchanger Pipe Toci1 Tdef1 Tliqsc Tdef2 Condenser Heat LEVb Exchanger 2 Toci2 LEVa2 Tsci By-pass Valve Tsco 4.1Mpa 4WV2 4WV3 4WV1 High pressure gas Pipe O/S2 O/S1 HPS1 HPS2 SV181 SV182...
Page 21 MVHQ168/192/210/240ME2CA-Cooling Operation MVHQ168/192/210/240ME4CA-Cooling Operation...
Page 22 MVHQ072/096/120ME2CA-Heating Operation MVHQ072/096/120ME4CA-Heating Operation Condenser Heat SC Heat Liquid LEVa1 Toci1 Exchanger 1 Tdef1 Exchanger Tliqsc Pipe Tdef2 Condenser Heat LEVb Toci2 Exchanger 2 LEVa2 Tsci By-pass Valve Tsco 4.1Mpa 4WV2 4WV3 4WV1 High pressure gas pipe HPS1 SV181 Gas-liquid Segregator Compressor Toil1 SV14...
Page 23 MVHQ144ME2CA-Heating Operation MVHQ144ME4CA-Heating Operation Condenser Heat SC Heat Liquid Exchanger 1 Toci1 LEVa1 Tdef1 Exchanger Pipe Tliqsc Tdef2 Condenser Heat LEVb Toci2 Exchanger 2 LEVa2 Tsci By-pass Valve Tsco 4.1Mpa 4WV2 4WV3 4WV1 High pressure gas pipe O/S2 O/S1 HPS1 HPS2 SV181 SV182...
Page 24 MVHQ168/192/210/240ME2CA-Heating Operation MVHQ168/192/210/240ME4CA-Heating Operation...
Page 25 4. Functional Parts Layout...
Page 27 MVHQ072ME2CA 6. Functional parts layout MVHQ072ME4CA MVHR072ME2CA Gas-liquid segregator Oil segregator Gas-liquid segregator...
Page 28 MVHQ096/120ME2CA MVHQ096/120ME4CA MVHR096-120ME2CA Segregator Oil segregator Gas-liquid segregator...
Page 29 MVHQ144ME2CA MVHQ144ME4CA MVHR096-120ME2CA Compressor 1 Gas-liquid segregator 4WV1 Compressor 2 4WV2 4WV3 Toci1 Toci2 Fan motor SV21 Low pressure sensor SV10 Oil segregator ● Electronic expansion valve Pressure switch Electronic expansion valve Compressor Plate type heat exchanger Gas-liquid segregator SV14 ●...
Page 30 MVHQ168/192/216/240ME2CA MVHQ168/192/216/240ME4CA Segregator Segregator...
Page 31: Functional Parts Layout
Part Name Sign Function Data Remark ANB66FZPMT: 0.23Ω "Capacity control, to meet indoor load through ANB78FZPMT: 0.23Ω Compressor / frequency adjustment." ANB66FZYMT: 0.23Ω ANB78FZYMT: 0.23Ω Pressure HPS1/2 Protection control for high pressure. 602psi, OFF setting Switch In heating, compressor frequency adjustment and 0~601psi protection control for abnormal pressure.
Page 32 Part Name Sign Function Data Remark AC220V Power on Four-Way 4WV1 during heating and Switch between cooling and heating. HR:3EA/Unit Valve 4WV1/2/3 power off during cooling or defrosting. Detecting the temperature of gas pipe. It is used to Tsuc check whether the four-way valve is normal. Detecting the inlet temperature of sub-cooling pipe Tsci and controlling sub-cooling valve's opening...
Page 33: Refrigerant Flow For Each Operation Mode
5. Refrigerant Flow for Each Operation Mode...
Page 42: Functions And Control
6. Functions and Control 6.1 Startup 6.1.1 Startup Procedure 1. Materials preparation before on-site commissioning --Printed drawing of architectural design --Printed installation check list and system start request --Startup manual --MRV 5-H service manual --Troubleshooting and error codes 2. Read carefully before start up 3.
Page 43: Configuration Dip Switches
5. Indoor unit --Anti-dust protection during installation --Installed proper and level --Service space reserved at least 19.69X19.69 inch 6. Outdoor unit -- Installed on anti-vibration pads at bottom -- Space (20cm/7.87inch away from each other) -- Gather fittings are the same level -- Breaker -- Communication cable (A / B / C, PQ) 7.
Page 44: Power On
6.1.4 Power on 1. For the protection of the compressor, It is required to preheat the compressor oil 6 hours before unit start up. Six hours of preheating is the standard time for preheating. Commissioning technicians must wait for 6 hours until the compressor oil reaches the required temp.
Page 45: Mrv 5-H System Startup Report
6.1.7 MRV 5-H System Startup Report MRV 5-H INSTALATION CHECK LIST AND SYSTEM START UP REQUEST ENGLISH BETA 1.2 PROJECT: CUSTOMER: INSTALLER: CITY/COUNTRY: ADDRESS: CONTACT TEL: DATE: PROJECT CONFIGURATION SYSTEM 1 CODE MODEL SYSTEM 2 CODE MODEL SYSTEM 3 CODE MODEL SYSTEM 4 CODE MODEL...
Page 46 MRV 5-H INSTALATION CHECK LIST ENGLISH BETA 1.2 1. PREINSTALATION 1.1. REFRIGERATION PIPING * Refrigerant piping is correctly insulated. * Refrigerant piping have enough fixed supports. * All welds were made with nitrogen flow to eliminate copper oxidation. * All branch fittings are installed in a horizontal position. * Thereis at least 3-1/2 feet seperation between branchs, and 2 feet clearance from the indoor units.
Page 47 MRV 5-H 1.6. OUTDOOR UNITS * Outdoor units are Installed on anti-vibration pads or rails. * Outdoor units are installed on level ground. * 3-1/2 feet of clearance is required for the outdoor units from walls and others equipment. * Outdoor units are in perfect physical conditions, free of dents or dings. * The outdoor units in same system have 8 inches clearance from each other.
Page 48 MRV 5-H ENGLISH BETA 1.2 SYSTEM START UP LIST SYSTEM CODE MODEL * Refrigerant recharge calculation Liquid pipe size Multiple factor Length Subtotal 1/4" (6.35) 0.022 3/8" (9.52) 0.054 1/2" (12.7) 0.11 3/4" (15.88) 0.17 5/8" (19.05) 0.25 7/8" (22.22) 0.35 1"...
Page 49 MRV 5-H ENGLISH BETA 1.2 START UP * Do measurements with all units switched ON after 1 hour. Items SW9/10/11 Master SW9/10/11 SLAVE 1 SW9/10/11 SLAVE 2 Pressure Pd1 (psi) 0/0/1 1/0/1 2/0/1 Pressure Ps (psi) 0/2/1 1/2/1 2/2/1 Temp.Td1 (°F) 0/3/1 1/3/1 2/3/1...
Page 50: Outdoor Control Board Photo
6.2 Outdoor Control Board Photo PCB code: 0151800256CM SW1 SW2 SW3 SMG2 SMG1 (UP) (STOP) (START) (DOWN) LED1 LED3 LED4 LED5 LED7 BUS-B STOP LED6 BUS-A...
Page 51 Function Function Power connector Emergency stop signal connector Solenoid valve connector Monitoring PC WIFI connector Low-power standby control connector Power suppression signal connector Compressor heating tape connector Expansion PCB 12VDC power supply connector High pressure switch connector Zigbee wireless communication connector Outdoor EEV connector Expansion PCB communication connector Ambient temperature, coil temperature sensor...
Page 52 PCB code: 0151800367...
Page 53 Compressor driver board: 0151800260F Function Connected reactor connector Low-power standby control connector Connect electrolytic capacitor PCB connector Module three-phase power input connector Module drive output connector Dip switch Main PCB and fan motor communicating connector...
Page 54 Filter board: 0150402916 Function Filter board output connector Filter board ground wire connector Filter board power input connector Fuse...
Page 55 Capacitor board: 0150402920 Function Electrolytic capacitor negative connector Fan DC power supply connector Electrolytic capacitor positive connector Fuse...
Page 56: Outdoor Pcb Dip Switch Setting
6.3 Outdoor PCB Dip Switch Setting LED light definition: • LED1: power supply lamp Power on light • LED3: electronic expansion valve LEVa1, LEVa2, fault lamp No fault, not light • LED4: electronic expansion valve LEVb, LEVc, fault lamp No fault, not light •...
Page 57 ① BM1Introduction begin to search outdoor outdoor searching BM1_1 stop searching outdoor and lock the after startup quantity begin to search indoor indoor searching BM1_2 stop searching indoor and lock the after startup quantity allow(must be electrified for 6 hours) Group class start up after pre-heating for 6 within 6 hours when oil temp.
Page 58 ③ BM3 Introduction BM3_1 BM3_2 BM3_3 BM3_4 Outdoor Normal Update use BM3_1 Heat pump model Outdoor machine BM3_2 model Heat recovery model BM3_3 Heat pump model for US(230V) BM3-4 Heat recovery modelfor US(230V) Heat pump model for US(460V) Heat recovery modelfor US(460V) BM3_5 BM3_6 BM3_7 BM3_8 Outdoor tonnage BM3_5...
Page 59 Outdoor machine digital tube display settings The contents of the display are defined as follows: Key parts: long press the left START (SW5) control to enter, short press UP (SW4) data scroll up, short press down DOWN (SW7) data scroll down, long press the right STOP (SW6) enter data and exit Dial: SW1, SW2, SW3: set the rotary dial switch is 0 - 15 (Note: the dial plate, with the letters A for 10, B for 11, C for 12, D for 13, E for 14, F for 15) Display parts: LD1, LD2, LD3, LD4:4 digital tube from left to right...
Page 60 Function Digital Tube LD1 ~ 4 Display Indicates if machine has this function or not; 0=no, 1=yes Use E2 control parameters display and settings. Low temperature automatic Access by setting dial switches to 15-1-2. Set low temperature and 13(D) running function of indoor automatic operation at the same time.
Page 61 SW2 SW3 Function Digital Tube LD1 ~ 4 Display 110 representation 110.0Hz Frequency converter Press START (SW5) for 2 seconds, display 1111, enter the set INV1 current state: flashing display, each according to the 1 UP (SW4) frequency frequency rise 1Hz, every 1 times DOWN (SW7) frequency drop 1Hz; 5min after automatically quit the set state.
Page 62 Function Digital Tube LD1 ~ 4 Display Reserved Pd_temp Ps_temp 25 Unit: Tliqsc Tsco Outdoor Frequency conversion pres INV1 running time Unit: Min unit 15(F) address Frequency conversion pres INV2 running time Unit: Min 10(A) Frequency conversion pres INV1 current CT Unit: A, 1 decimal places 11(B) Frequency conversion pres INV2 current CT...
Page 63 ④ E2 control parameters display and setting Each need to be set, setting method: (1)Pres START (SW5) for 2 s, display 1111, enter the set state, flashing display the current value (2)According to UP (SW4) or DOWN (SW7) adjustment parameters (3)After the adjustment is completed <A>...
Page 64: Outdoor System Control Function
6.4 Outdoor System Control Function 6.4.1 Compressor Control Generally, the compressor frequency is controlled according to the target Ps during cooling. During the control process, Pd, Td/TOIL, PS, etc. are given priority. Generally, the compressor frequency is controlled according to the target Pd during heating. During the control process, Pd, Td/TOIL, PS, etc.
Page 65 The highest speed for each model under normal running condition Single Fan Horse power Speed 0~16 0~16 0~17 0~19 0~19 Double Fan Horse power Speed 0~19 0~20 0~21 0~22 0~22 a. In cooling mode Startup procedure: When compressor starts up, if Ta≥95°F, the outdoor motor will run at the highest class; if 77°F≤Ta<95°F, the outdoor motor will run at the 15 class;...
Page 66 [Note] Frequency maintained within the 3 min after starting is as follows: ·OR· ·Tao ③ Restart of the compressor 1. In the control of the compressor, in order to prevent starting at differential pressure, it must take some time to balance the high and low pressure after stopping fully, the restarting will delay automatically, and the compressor can restart after stopping for 3 to 5 minutes.
Page 67 2. When operating frequency of one compressor rises up to the 75% of the highest frequency, two compressors in the outdoor unit 1 will work at the same time. 3. When the operation output ratio of the outdoor unit 1 (actual operating frequency/total operating frequency) continue to rise up to the 75%, two compressors in the outdoor unit 2 will also work at the same time.
Page 68 6.4.5 Pump Down Operation After the liquid refrigerant is retained in the gas-liquid separator, the refrigeration oil in the compressor is diluted to reduce the lubricity, and can cause Liquid compression, which may damage the compressor. This control is to prevent these situations happening.
Page 69 6.4.8 High Discharge Temperature Control ·Td high temperature side (≤248°F) is controlled by the “indoor unit SH correction + SV3 LEVb control + compressor frequency control”. (Note) Compressor frequency control is performed by fuzzy logic control. When the discharge temperature Td≥203°F, the SV3 is turned on. When the discharge temperature Td≥221°F, the compressor reduce the frequency When the discharge temperature Td ≤...
Page 70 6.4.10 Coil Protection Control By controlling the frequency of the compressor to control the temperature of the coil, and the coil temperature is usually controlled at 203°F. Above 203°F, the outdoor fan increases the speed. 6.4.11 Anti-Snow Protection 6.4.12 Heater Control When the system is running, control the heater according to the following picture.
Page 71 ② Heating high pressure control Target Pressure Pd When Heating Remarks Long piping setting 66.1 lb Medium piping setting 61.7 lb Factory default setting Short piping setting 57.3 lb During heating, the operating frequency of compressor is fuzzy logic controlled based on target Pd. The frequency of compressor goes down and Pd goes down;...
Page 72 Compressor ANB42 ANB52 ANB66 ANB78 ANB87 Rated Current 6.4.16 Heating is Prohibited Heating is prohibited When the outdoor temperature is greater than or equal to 77 degrees, the setting can be made through the outdoor unit rotary dial, and the outdoor is prohibited from starting. Function Digital Tube LD1 - 4 Display Heating limitation when...
Page 73: Comissioning
7. Comissioning 7.1 Field Settings for Outdoor Unit 7.1.1 Settings by DIP Switches Electric Wiring and Applications Cont. Internal Layout of Electric Box Compressor Drive Module Filter Board Capacitor Plate ReactorT ransformer (only for units Power Communication PCBM ain Control applied voltage with 460V) Terminal Terminal...
Page 74 BM1 Introduction Begin to search outdoor Outdoor searching after BM1_1 startup Stop searching outdoor and lock the quantity Begin to search indoor Indoor searching after BM1_2 startup Stop searching indoor and lock the quantity Allow (must be electrified for 6 hours) Start up after pre-heating Within 6 hours when oil temp.
Page 75 BM3 Introduction BM3_1 BM3_2 BM3_3 BM3_4 Outdoor Normal Update use BM3_1 Heat pump model BM3_2 Outdoor model Heat recovery model BM3_3 setting Heat pump model for US(230V) BM3_4 Heat recovery model for US(230V) Heat pump model for US(460V) Heat recovery model for US(460V) BM3_5 BM3_6 BM3_7...
Page 76 Electric Wiring and Applications Cont. Outdoor Machine Digital Tube Display Setting The contents of the display are defined as follows: • Key parts: long press the left START (SW5) control to enter, short press UP (SW4) data scroll up, short press DOWN (SW7) data scroll down, long press the right STOP (SW6) enter data and exit.
Page 77 Electric Wiring and Applications Cont. Outdoor Machine Digital Tube Display Setting 2. Outdoor Unit Parameter View SW1 0-3 is used to select the outdoor unit number, To select a different unit; SW3 set to 0-15 (outdoor unit number) (The host can display the parameters of the other outdoor unit and the indoor unit parameters, and the sub unit only displays the unit parameter SW1 is 0).
Page 78 Electric Wiring and Applications Cont. Function Digital tube LD1 ~ 4 Display Outdoor unit LEVa1 open degree 0---470 pluse Press START (SW5) for 2 s, 1111, enter the set state: flashing, Outdoor unit LEVa2 open degree press UP (SW4) valve fully open, according to DOWN (SW7) 2min after the valve is fully closed;...
Page 79 Electric Wiring and Applications Cont. 3. System Status Display and Control (host) SW1 SW2 SW3 Function Digital tube LD1 - 4 Display Refrigerant type 410A represents 410A refrigerant LD1: The total number of outdoor unit LD2: Display “-” The same outdoor unit total number LD3/ LD4: Total outdoor unit capacity (unit: Horse) and total capacity For example: 3-48 said 3 outdoor machines, with a total...
Page 80 Electric Wiring and Applications Cont. 4. E2 control parameters display and setting Each need to be set, setting method: (1) Press START (SW5) for 2 seconds. Display will show 1111, enter the set state. Flashing display the current value. (2) Press UP (SW4) or DOWN (SW7) to adjust the parameters. (3) After the adjustment is completed: <A>...
Page 81: Test Operation
7.2 Test Operation 7.2.1 Initial Power Up Contents to be confirmed Result Whether there is power on interface board of the outdoor unit, whether the 7-segment display is on and whether the displayed data on dip switch panel and the 7-segment display are variable. For MRV outdoor unit;...
Page 82: Rated Operation
7.2.2 Rated Operation Startup control on indoor and outdoor units and operation condition inspection for outdoor units can be completed through rated operation. In case of inspection on single indoor unit, wired controller or remote controller of indoor unit will be adopted for control. Rated cooling operation: when SW1, SW2 and SW3 dip switches are turned to 0, 13, 2, the indoor units will be started up automatically and be forced to turn to cooling operation.
Page 83 PCB board of indoor unit is in bad condition; Wires around the PCB board of indoor unit are broken and the insertion of socket is poor. Whether Whether there Whether Whether the fan there is AC15V is AC15V voltage another indoor is rotating in air supply voltage between between terminal B and...
Page 84 Normal Heating mode is preferred. Select non-preferred mode (cooling) or operation mode, which is different from selection way of switch setting. The abnormity of Indoor unit Indoor unit PCB board is in bad condition; Wired controller is in bad condition. Whether there PCB board in wired controller is in bad condition;...
Page 85 B. Air blower operation confirmation Start Set the operation to air supply mode, and press the operation switch. Whether there is air Check the indoor unit fan, sent out of the outlet of fan motor and air blower indoor unit circuit Whether there is Check the surrounding...
Page 86 C. Cooling operation confirmation Start Set the operation to cooling mode and hold Once stop, the outdoor down the operation switch for more than 5 unit can’t restart until 3 seconds in shutdown mode. to 5 minutes later. operation condition of the Whether the cold air is blown out compressor Whether air circulation is in good...
Page 87 D. Heating operation confirmation Start Set the operation to heating mode and hold Once stop, the outdoor down the operation switch for more than 5 unit can't restart until 3 seconds in shutdown mode. to 5 minutes later. operation condition of the Whether the warm air is blown out compressor Whether the air circulation is in...
Page 88 (Note 1)The general standard for temperature difference between inlet and outlet air In "cooling" operation; it is normal that the dry bulb temperature difference between inlet air and outlet air of the air conditioner is over 50°F (at the maximum frequency) after 30 minutes of operation. In "heating"...
Page 89 1. Connecting methods of test device: Insert one end of data line into the terminal of main PCB CN31 with a two-core terminal, one end connects Position of inserting test device (CN47) with 485 device or Gangda device, the other end of the device connects computer.
Page 90: Service Diagnosis
8. Service Diagnosis 8.1 Error Code Failure Codes Failure code description: (failure code of the whole system is showed as 8 bits, so 256 codes. Indoor failure code is listed in the table and by unit number) • Outdoor failure code exists in EEPROM, in which 5 failure codes can be kept. •...
Page 91 Digital Tube Indication Failure Code Definition Failure Description Remarks on Main Unit The searched VP-box quantity is less than set quantity for 26-3 continuous 5 minutes. Outdoor unit and VP-box Resumable communication failure The searched VP-box quantity is more than set quantity for 26-4 continuous 5 minutes.
Page 92 Digital Tube Indication Failure code definition Failure description Remarks on Main Unit Discharging temp sensor Tdi too low 43-0 In normal operation, If Td < CT + 50 °F (10 °C) for continuous protection Once 5 minutes, the unit stops and alarms. 2 minutes and 50 s confirmed later, resume automatically.
Page 93 Digital Tube Indication Failure Code Definition Failure Description Remarks on Main Unit Module rectifier-side software – transient overcurrent Module rectifier-side current – detection circuit anomaly Module hardware overcurrent – The rotor position can not be detected 6 times in a row Compressor out of step while starting or running, and the INV control board is automatically restored after stopping 5 s.
Page 94 In the case of no fault, if the system does not meet the start-up condition, the host digital display standby code. Indoor machine capacity beyond the outdoor machine capacity of Indoor machine capacity beyond the outdoor 555.0 150% or less than 50%, standby machine capacity of 150% or less than 50%, standby system system 555.1...
Page 95: Troubleshooting
8.2 Troubleshooting 8.2.1 Troubleshooting by Error Code Failure code LED5 Failure description: Outdoor Defrosting temperature sensors: Indoor unit LED status digital 20 times Tdef failure display tube: 20-0 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal Normal 1.
Page 96 Failure code LED5 Failure description: Outdoor Indoor unit LED status Ambient temperature sensor: digital 20 times Tao failure display tube: LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting Diagnosis Troubleshooting MRV 5-HR series 2.
Page 97 LED5 Failure description: Failure code Suction temperature sensor: Outdoor Indoor unit LED status 20 times Ts failure digital display tube: 22-2 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 98 FFailure LED5F ailure description: code Discharging temperature sensor: Indoor unit LED status Outdoor 20 times Td1and Td2 failure digital display tube: LED1 LED2 23-0,1 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 99 Failure code LED5 Failure description: Oil temperature sensor: Outdoor Indoor unit LED status digital display 20 times Th, Toil1 and Toil2 failure tube: 24-0, 1, 2 Indoor wired LED1 LED2 controller: Outdoor unit LED status Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 100 Failure code LED5 Failure description: Outdoor Heat exchanger inlet temperature: Indoor unit LED status digital 20 times Toci1 failure display tube: 25-0 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 101 Failure code LED5F ailure description: Outdoor Indoor unit LED status Communication between indoor unit and digital 20 times outdoor unit failure display tube: 26-0, 1, 2 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 102 Failure code LED5 Failure description: Outdoor Indoor unit LED status Outdoor compressor oil temperature too digital 20 times high failure(Toil1 and Toil2) display tube: 27-0, 1 LED1L Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 103 Failure code LED5 Failure description: Outdoor High pressure sensor Pd failure Indoor unit LED status digital 20 times display tube: LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 104 Failure code LED5 Failure description: Outdoor Low pressure sensor Ps failure Indoor unit LED status digital 20 times display tube: LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 105 Failure code LED5 Failure description: Outdoor Indoor unit LED status High pressure switch HPS1 and HPS2 fail- digital 20 times display tube: 30-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 106 FFailure LED5 Failure description: code Indoor unit LED status Defrosting temperature sensor failure: Outdoor 20 times Tsco and Tliqsc digital display tube: LED1 LED2 32-0, 1 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 107 LED5 Failure description: Failure code Indoor unit LED status AT24C04 EEPROM communication failure Outdoor AT24C04 EEPROM data check failure 20 times digital display IM EEPROM data or communication failure tube: 33-0, 2, 3 LED1 LED2 Indoor wired Outdoor unit LED status controller: 2 1 Normal Normal...
Page 108 Failure code LED5 Failure description: Outdoor Indoor unit LED status Outdoor compressor discharging tempera- digital ture (Td1, Td2).too high failure 20 times display tube: 34-0, 1 LED1L Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 109 Failure code LED5 Failure description: Outdoor Indoor unit LED status Four-way valve reversing failure digital 20 times display tube: 35-0, 1 LED1L Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 110 Failure code LED5 Failure description: Outdoor Indoor unit LED status Outdoor compressor oil temperature (Toil1, digital 20 times Toil2) too low failure display tube: 36-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 111 Failure code LED5 Failure description: Outdoor Indoor unit LED status Low pressure sensor Ps too low protection digital 20 times display tube: 39-0 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series Check i f the low pressur e...
Page 112 Failure code LED5 Failure description: Outdoor Indoor unit LED status Compressor ratio digital 20 times display tube: 39-1 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2. Abnormity detection method Check if the system operating ◆...
Page 113 Failure code LED5 Failure description: Outdoor High pressure sensor Pd too high protec- Indoor unit LED status digital 20 times tion display tube: LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series Replace it correctly b y after-...
Page 114 Failure code LED5 Failure description: Outdoor Outdoor unit compressor discharging tem- Indoor unit LED status digital 20 times perature (Td1, Td2) too low failure display tube: 43-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting...
Page 115 Failure code LED5 Failure description: Outdoor Indoor unit LED status Communications between outdoor units digital 20 times failure. display tube: LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series Check if the communication wire Replace it correctly b y after- between the outdoor units is normal.
Page 116 Failure code LED5 Failure description: Outdoor Indoor unit LED status Communication with INV1 and INV2 module digital 20 times board failure display tube: 46-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting Diagnosis Troubleshooting MRV 5-HR series...
Page 117 Failure code LED5 Failure description: Outdoor Indoor unit LED status Communication with fan motor module digital 20 times board 1, 2 failure display tube: 46-4, 5 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 118 Failure code LED5 Failure description: Outdoor Indoor unit LED status Communication with wireless communicai- digital 20 times ton module failure display tube: LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 119 Failure code LED5F ailure description: Outdoor Indoor unit LED status LEVa1,2 and LEVb,c over current protection digital 20 times display tube: 51-0,1,2,3 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 120 Failure code LED5 Failure description: Outdoor Indoor unit LED status LEVa1,2 and LEVb,c open circuit digital 20 times display tube: 52-0,1,2,3 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series Check if the electronic expansion 2.
Page 121 Failure code LED5 Failure description: Outdoor Indoor unit LED status Emergency stop function switch failure digital 20 times display tube: LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting Diagnosis Troubleshooting MRV 5-HR series 2.
Page 122 Failure code LED5 Failure description: Outdoor Pressure difference between high and low Indoor unit LED status digital 20 times pressure too low failure display tube: 75-0 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting Diagnosis Troubleshooting MRV 5-HR series...
Page 123 Failure code LED5 Failure description: Outdoor Indoor unit LED status Incorrect settings of quantity, address or digital capacity for outdoor unit 20 times display tube: 76-0, 1, 2 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Diagnosis and troubleshooting DiagnosisT roubleshooting...
Page 124 Failure code LED5 Failure description: Outdoor Indoor unit LED status Outdoor unit model are set incorrectly digital 20 times display tube: LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 125 Failure code LED5 Failure description: Outdoor Indoor unit LED status Compressor module hardware over current digital 20 times display tube: 11 0-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 126 Failure code LED5 Failure description: Outdoor Indoor unit LED status Fan motor module hardware over current digital 20 times display tube: 11 0-4, 5 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 127 Failure code LED5 Failure description: Outdoor Indoor unit LED status Compressor out of control digital 20 times display tube: 11 1-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series Replace...
Page 128 Failure code LED5 Failure description: Outdoor Indoor unit LED status Compressor module radiator temp. too high digital 20 times display tube: 11 2-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 129 Failure code LED5 Failure description: Outdoor Indoor unit LED status Fan motor module radiator temp. too high digital 20 times display tube: 112- 4, 5 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 130 Failure code LED5 Failure description: Outdoor Indoor unit LED status Compressor module DC BUS under voltage digital 20 times display tube: 114-0, 1 LED1L Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 131 Failure code LED5 Failure description: Outdoor Indoor unit LED status Fan motor module DC BUS under voltage digital 20 times display tube: 114-4, 5 LED1L Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 132 Failure code LED5 Failure description: Outdoor Indoor unit LED status Compressor module DC BUS over voltage digital 20 times display tube: 115-0, 1 LED1L Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 133 Failure code LED5 Failure description: Outdoor Indoor unit LED status Compressor module software over current digital 20 times display tube: 117-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series Check if the supply voltage is normal.
Page 134 Failure code LED5 Failure description: Outdoor Indoor unit LED status Fan motor module software over current digital 20 times display tube: 117- 4, 5 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 135 LED5 Failure description: Failure code Outdoor Indoor unit LED status Current detecting circuit abnormal of com- digital 20 times pressor module display tube: 119-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller77 Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 136 Continued Failure code LED5 Failure description: Indoor unit LED status Current detecting circuit abnormal of com- Outdoor digital 20 times pressor module display tube: 119-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller77 Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 137 Continued LED5 Failure description: Failure code Indoor unit LED status Current detecting circuit abnormal of Outdoor digital 20 times compressor module display tube: 119-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller77 Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 138 Failure code LED5 Failure description: Outdoor Indoor unit LED status Compressor module power supply abnor- digital display 20 times tube: 120-0, 1 LED1 LED2 121-0, 1 Indoor wired Outdoor unit LED status controller: 78, Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 139 LED5 Failure description: Failure code Outdoor Indoor unit LED status Radiator temp. sensor of compressor mo- digital 20 times dule is abnormal. display tube: 122-0, 1 LED1L Indoor wired Outdoor unit LED status controller: 7 A Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting...
Page 140 Failure code LED5 Failure description: Outdoor Indoor unit LED status Hardware instantaneous over current of the digital display 20 times tube: 123-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller: 78, Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 141 Failure code LED5 Failure description: Outdoor Indoor unit LED status Compressor module three-phase power failure digital display 20 times tube: 124-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller: 78, Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series...
Page 142 Failure code LED5 Failure description: Outdoor Indoor unit LED status Compressor frequency un-match digital 20 times display tube: 125-0, 1 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting Diagnosis Troubleshooting MRV 5-HR series Whether the power supply voltage is 2.
Page 143 Failure code LED5 Failure description: Outdoor Indoor unit LED status Fan motor speed un-match digital 20 times display tube: 125-4, 5 LED1 LED2 Indoor wired Outdoor unit LED status controller: Normal Normal 1. Model Failure diagnosis and troubleshooting DiagnosisT roubleshooting MRV 5-HR series 2.
Page 144: Refrigerant Charge Check
8.2.2 Refrigerant charge check (1) Refer to the R410A system static balance pressure reference value form (2) Check if the temp. difference between coil pipe and ambient temp. less than 39.2°F, if yes, it means the system lack of refrigerant. R410A system static balance pressure reference value Outdoor ambient temp.
Page 145: 4-Way Valve Check
8.2.3 4-Way Valve Check 1. After the valve is energized, listen to the sound of valve action, if no action enter the next checking. For the solenoid valve: check if the PCB terminal has 220V output, if yes, change the solenoid valve coil, if not OK, change the solenoid valve body.
Page 146: Fan Motor Detection Standard
8.2.5 Fan Motor Detection Standard Fan Motor Code: 0150401918C Expected readings of control Expected readings of DC fan PWB VDC outputs to DCFM motor circuit board resistances Multi meter test points for VDC Multimeter Multimeter Multimeter Multimeter DCFM PWB PCB DC volts red probe black probe black probe...
Page 147 Fan Motor Code: 0150401919C Expected readings of control Expected readings of DC fan PWB VDC outputs to DCFM motor circuit board resistances Multi meter test points for VDC Multimeter Multimeter Multimeter Multimeter DCFM PWB PCB DC volts red probe black probe black probe red probe resistance value...
Page 148: Parts Replacement Instructions
9. Parts Replacement Instructions 9.1 MRV-link Introduction A. Compressor Replacement - single compressor unit Step 1. Remove the front panel and release the refrigerant from the system through the stop valve. Step 2. Remove the compressor cushion from the compressor and then remove the power wire and ground wire. compressor cushion...
Page 149 Step 3. Remove four anchor bolts of the compressor. anchor bolts Step 4. Welding cut the compressor discharge & suction pipe, EVI pipe and oil discharge pipe. Step 5. After the compressor is removed, put the new compressor in the position to instead the original one, and then reverse the operation in the order of the previous removal.
Page 150 B. Compressor Replacement – double compressors unit Step 1. Remove the front panel and release the refrigerant from the system through the stop valve. Step 2. Remove the compressor cushion from the compressor and then remove the power wire and ground wire. power wire and ground wire compressor...
Page 151 Step 4. Welding cut the compressor discharge & suction pipe, EVI pipe and oil discharge pipe. Step 5. After the compressor is removed, put the new compressor in the position to instead the original one, and then reverse the operation in the order of the previous removal. After the compressor is replaced, vacuum the system, recharge refrigerant and start the test run.
Page 152: Gas-Liquid Segregator Replacement
9.2 Gas-liquid Segregator Replacement A. Gas-liquid segregator Replacement - single compressor unit Step 1. Remove the front panel and release the refrigerant from the system through the stop valve. Step 2. Remove the anchor bolts of the gas-liquid segregator. anchor bolts Step 3.
Page 153 B. Gas-liquid segregator Replacement - double compressors unit Step 1. Remove the front panel and release the refrigerant from the system through the stop valve. Step 2. Remove the anchor bolts of the gas-liquid segregator. Step 3. Weld to cut the tubes that connecting with the gas-liquid segregator e.g. inlet/outlet pipe of segregator & oil separator and outlet pipe of bottom oil return solenoid valve.
Page 154: Mrv-Link
1. Master wireless modules, Slave wireless modules and Repeaters share the same hardware but with different software inside. 2.Repeaters are powered by a 5V power adapter Master / Slave Wireless Module Repeater Connectable Outdoor Series Model MRV5-H MVHQ***ME*CA Customer Model Description MVAO005ME2AA One Way Cassette MVAO007ME2AA...
Page 155 Customer Model Description MVAL018ME2AA Large Cassette (3*3) MVAL024ME2AA Large Cassette (3*3) MVAL030ME2AA Large Cassette (3*3) MVAL036ME2AA Large Cassette (3*3) MVAL042ME2AA Large Cassette (3*3) MVAL048ME2AA Large Cassette (3*3) MVAD007MV2AA Slim Duct MVAD009MV2AA Slim Duct MVAD012MV2AA Slim Duct MVAD018MV2AA Slim Duct MVAD024MV2AA Slim Duct MVAM007ME2AA Medium Static Duct...
Page 156: Mrv-Link Benefits
PCB production time 10.2 MRV-Link Benefits • Easy Installation Traditional wired connection has complex operation procedures, such as wiring, wire threading, wire binding and wire cutting etc. which cost a lot of labor and resources. MRV-link as a wireless communication technology, and makes installation easier by removing the complex wire connection procedures.
Page 157: Mrv-Link Specification
10.3 MRV-Link Specification Item Model BOM No. Spare Part Code Indoor PCB Connection Terminal Main IDU Wireless module IGU09 AA9VH2B3P 0151800313C CN34 Slave IDU Wireless Module IGU10 AA9VH1B3P 0151800314B CN34 Repeater IGU11 AA9VH0B3P 0151800321B 10.4 Wiring Figure Outdoor 1O utdoor 2 Outdoor 3 Outdoor 4 P Q A B C...
Page 158: Dimension
10.5 Dimension...
Page 159: Installation Requirements For Mrv-Link
10.6 Installation Requirements for MRV-Link (1). The connection requirements for wireless communication in MRV systems adopting MRV-link includes a wired connection from the outdoor unit to the closest indoor unit which will be identified as the Master unit. The master unit will be equipped with a master MRV-link module, and the remaining indoor units will be equipped with Slave MRV-link modules.
Page 160: Mrv-Link Troubleshooting
10.7 MRV-Link Troubleshooting ODU searching for IDU Set DIP Switch BM1-2 OFF Set BM2-4 on SW1 SW2 SW3 Waiting The units number in LED display tube =real units number? BM1-2 ON,Search ending SW1 SW2 SW3 Waiting for 10 min and checking LED display tube SMG1:Checking error rate% Confirm IDU status...
Page 161 Each system can finish automatic networking troubleshooting separately, as shown in the left troubleshooting chart. Note: 1. For initial commissioning and troubleshooting MRV-link wireless communication units, the air conditioner units must be powered on separately. Other IDUs without networking are forbidden to be powered on. Indoor units and systems that have completed network commissioning must be powered off and then other units can start networking in sequence.
Page 162 Wireless module Power Indicator indicator 1. The power indicator After the wireless module is powered on, the indicator light is red. If the power indicator is off, check as follows: The internal computer board is not powered on or damaged, or the wireless module is damaged. 2.
Page 163: Appendix
11. Appendix 11.1 Wiring Diagrams and PCB Photo 0150571246-208V...
Page 164 0150571246-460V...
Page 165: Sensor Characteristic Table
11.2 Sensor Characteristic Table Model number Spare parts Description Resistance(KΩ) number 0150402567 Tao sensor R25=10KΩ 0150402568 Toci1/Ts sensor R25=10KΩ 0150401913 Tdef/Tdef sensor R25=10KΩ 0150402566 Td1 sensor R80=50KΩ MVHQ072/096/120ME2CA 0150402575 Toil1 sensor R80=50KΩ MVHQ072/096/120ME4CA 0150402570 Tliqsc/Tsco sensor R25=10KΩ 0150402573 Tsci sensor R25=10KΩ...
Page 166: Standard For Evacuation, Pressurization, Refrigerant Recharge
11.3 Standard for Evacuation, Pressurization, Refrigerant Recharge Connect the vacuum pump at both liquid and suctions valves Operation Procedure: After reaching 0.007psi or Vacuum should less than 350 microns, let the not rise above 500 vacuum run continuously microns If the vacuum pointer rises, it shows there is water or leakage in the system.
Page 167 Additional Refrigerant Charging • Charge the additional refrigerant as liquid using a digital refrigerant scale and manifold gauges. • Charge the system in trail mode. Compressor failure can occur if the system runs for a prolonged period of time while undercharged. •...
Page 168: Specifications
230V VRF Outdoor Unit Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ072ME2CA MVHQ096ME2CA MVHQ120ME2CA System Combination Model Name Brand Haier Haier Haier Norminal Capacity (Btu/h) 72000 96000 120000 Factory Model Number AV08CMVURAB AV10CMVURAB AV12CMVURAB Voltage, Cycle, Phase V/Hz/-...
Page 169 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ072ME2CA MVHQ096ME2CA MVHQ120ME2CA Working Temp.Cooling Fº -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 66-1/2 (1689) 66-1/2 (1689.1) 66-1/2 (1689.1) Net Dimension: Width in (mm) 38-5/8 (981)
Page 170 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ144ME2CA MVHQ168ME2CA MVHQ192ME2CA System Combination Model Name Brand Haier Haier Haier Norminal Capacity (Btu/h) 144000 168,000 192,000 Factory Model Number AV14CMVURAB AV16CMVURAB AV18CMVURAB Voltage, Cycle, Phase V/Hz/- 208-230/60/3 208-230/60/3 208-230/60/3...
Page 171 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ144ME2CA MVHQ168ME2CA MVHQ192ME2CA Working Temp.Cooling Fº -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 66-1/2 (1689.1) 73-1/4 (1858) 73-1/4 (1858) Net Dimension: Width in (mm) 55-1/2 (1410)
Page 172 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ216ME2CA MVHQ240ME2CA MVHQ264ME2CA System Combination 10T+12T Model Name Brand Haier Haier Haier Norminal Capacity (Btu/h) 216,000 240,000 264000 Factory Model Number AV20CMVURAB AV22CMVURAB Voltage, Cycle, Phase V/Hz/- 208-230/60/3 208-230/60/3 208-230/60/3...
Page 173 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ216ME2CA MVHQ240ME2CA MVHQ264ME2CA Working Temp.Cooling Fº -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 73-1/4 (1858) 73-1/4 (1858) 66-1/2 Net Dimension: Width in (mm) 70-1/4 (1785)
Page 174 New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ288ME2CA MVHQ312ME2CA MVHQ336ME2CA System Combination 12T+12T 12T+14T 12T+16T Model Name Brand Haier Haier Haier Norminal Capacity (Btu/h) 288000 312000 336000 Factory Model Number Voltage, Cycle, Phase V/Hz/- 208-230/60/3 208-230/60/3 208-230/60/3 Electrical...
Page 175 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ288ME2CA MVHQ312ME2CA MVHQ336ME2CA Working Temp.Cooling Fº -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 66-1/2 73-1/4 73-1/4 Net Dimension: Width in (mm) 55-1/2+55-1/2 55-1/2+70-1/4...
Page 176 New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ360ME2CA MVHQ384ME2CA MVHQ408ME2CA System Combination 14T+16T 16T+16T 16T+18T Model Name Brand Haier Haier Haier Norminal Capacity (Btu/h) 360000 384000 408000 Factory Model Number Voltage, Cycle, Phase V/Hz/- 208-230/60/3 208-230/60/3 208-230/60/3 Electrical...
Page 177 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ360ME2CA MVHQ384ME2CA MVHQ408ME2CA Working Temp.Cooling Fº -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 73-1/4 73-1/4 73-1/4 Net Dimension: Width in (mm) 70-1/4 +70-1/4 70-1/4 +70-1/4...
Page 178 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ432ME2CA MVHQ456ME4CA System Combination 18T+18T 10T+14T+14T Model Name Brand Haier Haier Norminal Capacity (Btu/h) 432000 456000 Factory Model Number Voltage, Cycle, Phase V/Hz/- 208-230/60/3 460V/60/3 Electrical Maximum Fuse Size A...
Page 179 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ432ME2CA MVHQ456ME4CA Working Temp.Cooling Fº -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 73-1/4 66-1/2+73-1/4 +73-1/4 Net Dimension: Width in (mm) 70-1/4 +70-1/4 55-1/2+70-1/4 +70-1/4 Net Dimension: Depth in (mm)
Page 180 460V VRF Outdoor Unit Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ072ME4CA MVHQ096ME4CA MVHQ120ME4CA System Combination Model Name Brand Haier Haier Haier Norminal Capacity (Btu/h) 72000 96000 120000 Factory Model Number AV08GMVURAB AV10GMVURAB AV12GMVURAB Voltage, Cycle, Phase V/Hz/-...
Page 181 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ072ME4CA MVHQ096ME4CA MVHQ120ME4CA Working Temp.Cooling Fº (ºC) -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº (ºC) -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 66-1/2 (1689) 66-1/2 (1689.1) 66-1/2 (1689.1) Net Dimension: Width in (mm)
Page 182 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ144ME4CA MVHQ168ME4CA MVHQ192ME4CA System Combination Model Name Brand Haier Haier Haier Norminal Capacity (Btu/h) 144000 168,000 192,000 Factory Model Number AV14GMVURAB AV16GMVURAB AV18GMVURAB Voltage, Cycle, Phase V/Hz/- 460/60/3 460/60/3 460/60/3...
Page 183 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ144ME4CA MVHQ168ME4CA MVHQ192ME4CA Working Temp.Cooling Fº (ºC) -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº (ºC) -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 66-1/2 (1689.1) 73-1/4 (1858) 73-1/4 (1858) Net Dimension: Width in (mm)
Page 184 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ216ME4CA MVHQ240ME4CA MVHQ264ME4CA System Combination 10T+12T Model Name Brand Haier Haier Haier Norminal Capacity (Btu/h) 216,000 240,000 264000 Factory Model Number AV20GMVURAB AV22GMVURAB Voltage, Cycle, Phase V/Hz/- 460/60/3 460/60/3 460V/60/3...
Page 185 1-1/4(28.58) Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ216ME4CA MVHQ240ME4CA MVHQ264ME4CA Working Temp.Cooling Fº (ºC) -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº (ºC) -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 73-1/4 (1858) 73-1/4 (1858) 66-1/2...
Page 186 New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ288ME4CA MVHQ312ME4CA MVHQ336ME4CA System Combination 12T+12T 12T+14T 12T+16T Model Name Brand Haier Haier Haier Norminal Capacity (Btu/h) 288000 312000 336000 Factory Model Number Voltage, Cycle, Phase V/Hz/- 460V/60/3 460V/60/3 460V/60/3 Electrical...
Page 187 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ288ME4CA MVHQ312ME4CA MVHQ336ME4CA Working Temp.Cooling Fº (ºC) -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº (ºC) -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 66-1/2 73-1/4 73-1/4 Net Dimension: Width in (mm)
Page 188 New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ360ME4CA MVHQ384ME4CA MVHQ408ME4CA System Combination 14T+16T 16T+16T 16T+18T Model Name Brand Haier Haier Haier Norminal Capacity (Btu/h) 360000 384000 408000 Factory Model Number Voltage, Cycle, Phase V/Hz/- 460V/60/3 460V/60/3 460V/60/3 Electrical...
Page 189 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ360ME4CA MVHQ384ME4CA MVHQ408ME4CA Working Temp.Cooling Fº (ºC) -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº (ºC) -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 73-1/4 73-1/4 73-1/4 Net Dimension: Width in (mm)
Page 190 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ432ME4CA MVHQ456ME4CA System Combination 18T+18T 10T+14T+14T Model Name Brand Haier Haier Norminal Capacity (Btu/h) 432000 456000 Factory Model Number Voltage, Cycle, Phase V/Hz/- 460V/60/3 460V/60/3 Electrical Maximum Fuse Size A...
Page 191 Items New Heat Pump ＆ Heat Recovery Marketing Model Name MVHQ432ME4CA MVHQ456ME4CA Working Temp.Cooling Fº (ºC) -4F-122F(-20~50C) Operation + Snow Hood Range Working Temp.Heating Fº (ºC) -22F~60F(-30~15.5C) Sound Pressure dB(A) Acoustic Power dB(A) Net Dimension: Height in (mm) 73-/1/4 66-1/2+73-1/4 +73-1/4 Net Dimension: Width in (mm) 70-1/4 +70-1/4 55-1/2+70-1/4 +70-1/4...
Page 192 Spare parts Model Number Description Resistance（KΩ） number 0150402567 R25=10KΩ Tao sensor 0150402568 R25=10KΩ Toci1/Ts sensor 0150401913 R25=10KΩ Tdef/Tdef sensor 0150402566 R80=50KΩ Td1 sensor MVHQ072/096/120ME2CA 0150402575 R80=50KΩ Toil1 sensor MVHQ072/096/120ME4CA 0150402570 R25=10KΩ Tliqsc/Tsco sensor 0150402573 R25=10KΩ Tsci sensor 0150402571 R25=10KΩ Tdef2 sensor 0150402572 R25=10KΩ...
Page 193: Dimensions
13. Dimensions MVHQ168/192/216/240ME2CA; MVHQ168/192/216/240ME4CA; Space between fixing holes 47 2/8 Space between fixing holes 32 5/8 emark ignall ineh ole(Ø25) Usingt he rubber plug in the unit'sa ttachment forp rotection ipeo utletf or 2-pipe system ipeo utletf or 3-pipe system According to the wire diameter size to choose the appropriate line hole, ower supply hole and using the line sheath in the unit's attachment for protection...
Page 194 MVHQ072ME2/4CA Unit: in. Space between fixing openings 31-1/2 ⑧ 31-1/2 38-3/5 29-1/2 Air outlet duct Back ＞ 11-4/5 connection position Right Left Front ＞39-2/5 ① ②③ ④ ⑤ ⑥ ⑦ Name Remark Signal line opening (Ø1) Using the rubber plug in the unit's attachment for protection Pipe outlet for 2-pipe system Pipe outlet for 3-pipe system According to the wire diameter size to choose the appropriate...
Page 195 MVHQ096/120/144ME2CA MVHQ096/120/144ME4CA Name Remark Signal line opening (Ø1) Using the rubber plug in the unit's attachment for protection Pipe outlet for 2-pipe system Pipe outlet for 3-pipe system According to the wire diameter size to choose the appropriate Power supply opening line opening, and using the line sheath in the unit's attachment for protection.
Page 196 MVHQ168/192/216/240ME2CA MVHQ168/192/216/240ME4CA MVHQ168/192/216/240ME2CA; MVHQ168/192/216/240ME4CA; Space between fixing holes 47 2/8 Name Remark Signal line hole(Ø25) Using the rubber plug in the unit's attachment for protection Pipe outlet for 2-pipe system Pipe outlet for 3-pipe system Name Remark According to the wire diameter size to choose the appropriate line hole, and Power supply hole using the line sheath in the unit's attachment for protection Signal line hole(Ø25)
Page 197: Center Of Gravity
14. Center of Gravity MVHQ168/192/216/240ME2CA MVHQ168/192/216/240ME4CA Coordinate position X-34.06 Y-16.93 Z-27.95...
Page 198: Piping Diagrams
15. Piping Diagrams MVHQ072/096/120ME2CA-Cooling Operation MVHQ072/096/120ME4CA-Cooling Operation SC Heat Liquid Condenser Heat Toci1 Exchanger 1 LEVa1 Exchanger Pipe Tdef1 Tliqsc Tdef2 Condenser Heat LEVb Toci2 Exchanger 2 LEVa2 Tsci By-pass Valve Tsco 4.1Mpa 4WV2 4WV3 4WV1 High pressure gas Pipe HPS1 SV181 Gas-liquid Segregator...
Page 199 MVHQ144ME2CA-Cooling Operation MVHQ144ME4CA-Cooling Operation SC Heat Liquid Condenser Heat Exchanger 1 Exchanger Pipe LEVa1 Toci1 Tdef1 Tliqsc Tdef2 Condenser Heat LEVb Exchanger 2 Toci2 LEVa2 Tsci By-pass Valve Tsco 4.1Mpa 4WV2 4WV3 4WV1 High pressure gas Pipe O/S2 O/S1 HPS1 HPS2 SV181 SV182...
Page 200 MVHQ168/192/210/240ME2CA-Cooling Operation MVHQ168/192/210/240ME4CA-Cooling Operation...
Page 201 MVHQ072/096/120ME2CA-Heating Operation MVHQ072/096/120ME4CA-Heating Operation Condenser Heat SC Heat Liquid LEVa1 Toci1 Exchanger 1 Tdef1 Exchanger Tliqsc Pipe Tdef2 Condenser Heat LEVb Toci2 Exchanger 2 LEVa2 Tsci By-pass Valve Tsco 4.1Mpa 4WV2 4WV3 4WV1 High pressure gas pipe HPS1 SV181 Gas-liquid Segregator Compressor Toil1 SV14...
Page 202 MVHQ144ME2CA-Heating Operation MVHQ144ME4CA-Heating Operation SC Heat Liquid Condenser Heat Exchanger 1 Toci1 LEVa1 Exchanger Pipe Tdef1 Tliqsc Tdef2 Condenser Heat LEVb Toci2 Exchanger 2 LEVa2 Tsci By-pass Valve Tsco 4.1Mpa 4WV2 4WV3 4WV1 High pressure gas pipe O/S2 O/S1 HPS1 HPS2 SV181 SV182...
Page 203 MVHQ168/192/210/240ME2CA-Heating Operation MVHQ168/192/210/240ME4CA-Heating Operation...
Page 204: Wiring Diagrams
16. Wiring Diagrams...
Page 206: Electric Characteristics
17. Electric Characteristics Units Power Supply Model number Volts Min. MVHQ072ME2CA 208/230 MVHQ096ME2CA 208/230 MVHQ120ME2CA 208/230 MVHQ144ME2CA 208/230 MVHQ168ME2CA 208/230 MVHQ192ME2CA 208/230 MVHQ216ME2CA 208/230 MVHQ240ME2CA 208/230 MVHQ144ME2CA MVHQ264ME2CA 208/230 56+41 80+60 MVHQ120ME2CA MVHQ144ME2CA MVHQ288ME2CA 208/230 56+56 80+80 MVHQ168ME2CA MVHQ144ME2CA MVHQ312ME2CA 208/230 56+59 80+90...
Page 207 Comp. SCCR Model number MVHQ072ME2CA 16.7 4.1*2 MVHQ096ME2CA 22.8 720*2 3.88*2 MVHQ120ME2CA 720*2 3.88*2 MVHQ144ME2CA 16.7 720*2 3.88*2 MVHQ168ME2CA 26*2 940*2 4.1*2 MVHQ192ME2CA 28*2 940*2 4.1*2 MVHQ216ME2CA 30*2 940*2 4.1*2 MVHQ240ME2CA 32*2 940*2 4.1*2 MVHQ144ME2CA MVHQ264ME2CA 16.7+24 720*2*2 3.88*2*2 MVHQ120ME2CA MVHQ144ME2CA MVHQ288ME2CA 16.7+16.7...
Page 208 Units Power Supply Model number Volts Min. MVHQ072ME4CA MVHQ096ME4CA MVHQ120ME4CA MVHQ144ME4CA MVHQ168ME4CA MVHQ192ME4CA MVHQ216ME4CA MVHQ240ME4CA MVHQ144ME4CA MVHQ264ME4CA 30+22 40+30 MVHQ120ME4CA MVHQ144ME4CA MVHQ288ME4CA 30+30 40+40 MVHQ168ME4CA MVHQ144ME4CA MVHQ312ME4CA 30+40 40+60 MVHQ168ME4CA MVHQ144ME4CA MVHQ336ME4CA 42+30 40+60 MVHQ192ME4CA MVHQ168ME4CA MVHQ360ME4CA 40+42 60+60 MVHQ192ME4CA MVHQ192ME4CA MVHQ384ME4CA 42+42...
Page 209 Comp. SCCR Model number MVHQ072ME4CA 10.5 950*2 MVHQ096ME4CA 14.5 720*2 1.7*2 MVHQ120ME4CA 720*2 1.7*2 MVHQ144ME4CA 12.5*2 720*2 1.7*2 MVHQ168ME4CA 12*2 950*2 2.2*2 MVHQ192ME4CA 14*2 950*2 2.2*2 MVHQ216ME4CA 16*2 950*2 2.2*2 MVHQ240ME4CA 18*2 950*2 2.2*2 MVHQ144ME4CA MVHQ264ME4CA 16.7+24 720*2*2 1.7*2*2 MVHQ120ME4CA MVHQ144ME4CA MVHQ288ME4CA 12.5*2+12.5*2...
Page 210: Operation Limits
18. Operation Limits...
Page 211: Sound Levels (Reference Data)
19. Sound Levels (Reference Data) 19. Noise level 19.1. Sound level testing (1) Testing (2) Testing conditions: a. Unit running in the nominal condition b. Test in the semi-anechoic 5 ft chamber c. Noise level varies from the actual factors such as room structure, etc 3.3ft 19.2.
Page 212 20. Optional Accessories Branch pipe dimension 3-pipe systerm FQG-R335A FQG-R506A FQG-R730A FQG-R1350A Note: Cut off the pipe from its middle when using. Unit: in. , ID: inner diameter, OD: outer diameter Liquid Suction gas branch pipe HP gas branch pipe Liquid branch pipe Suction gas manifold pipe HP gas manifold pipe...
Page 213 2-pipe systerm Unit: in. ; ID: inner diameter; Liquid side Gas side connection connection of Model Gas side branch pipe Liquid side branch pipe of branch pipe branch pipe 9-2/5 3-9/10 2-1/5 2-1/5 FQG-B335A Ø3/4 ID3/8 ID2/3 ID1/4 ID1/2 12-4/5 9-2/5 2-1/5 3-9/10...
Page 214 Gather pipe dimension Gather pipe is used for combination of outdoor unit. HZG-R20B (for 2 basic modules), HZG-R30B (for 3 basic modules) Note: Cut off the pipe from its middle when using. Unit: in., ID: inner diameter, OD: outer diameter Model Side Mark...
Page 215 Model Side Mark Manifold pipe Insulation material Side Mark Connection of manifold pipe *440 +0.2 ID25.6 +0.15 22.4 +0.15 19.2 *326 *301 +0.15 ID16.1 +0.15 ID12.9 +0.15 ID9.7 *203...
Page 216 One by one valve box Specification Model VP1-112B VP1-180B VP1-280B Power Supply 1/220-230/50/60 Max. Number of branch lines Branching Number of Connectable Indoor Units Total Number of Connectable Indoor Units Branching Capacity of Connectable x≤38 38 K < x ≤ 61 61<...
Page 217 Dimension 4x1 3/8 (4×35) 4 1/4 （108） 9 1/8(232) 10 7/8(277) 2 3/8(60)
Page 218 Piping diagram All cooling LEVhi LEVlo LEVC Cooling ＞Heating LEVhi LEVlo LEVC...
Page 219 All heating / Heating ＞ Cooling / Heating standby LEVhi LEVlo LEVC Cooling OFF LEVhi LEVlo LEVC...
Page 220 Wiring Diagran 3 2 1 CN28 CN31 LED3 Tliqsc Tsco SW03 LED4 LED5 LED1 LED2 CN11 CN10 PMV3 BSV2 BSV1 PMV2 PMV1 Qo Po Qi Pi Terminal Terminal Block for Block for Communication Power Connect Connect To power supply Notice： outdoor indoor 1PH,220-230V,50/60Hz...
Page 221 Wiring Diagran Outdoor unit side (3 pipes) HP gas Pipe 1/2 (12.7) Indoor unit side (2 pipes) Suction gas Pipe 5/8 (15.88 ) 112B Liquid Pipe 3/8 (9.52) Gas Pipe 5/8 (15.88) Liquid Pipe 3/8 (9.52) Outdoor unit side (3 pipes) HP gas Pipe 5/8 (15.88) Indoor unit side (2 pipes) Suction gas Pipe 5/8 (15.88 )
Page 222 • If the valve box is transferred to a new user, this manual shall be transferred to the user, together with the conditioner. • Before installation, be sure to read Safety Considerations in this manual for proper installation. • The safety considerations stated below is divided into “ Warning”...
Page 223 • If there is leakage of the refrigerant gas flow during operation, refrigerant gas is required. If the refrigerant gas contacts any fire, poisonous gases will be produced. • If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
Page 224 Do not install at such places 1. A place that is filled with mineral oil, a kitchen which has oil and steam everywhere, etc., which may cause degradation, falling off and water leakage of the resinous components. 2. A place with corrosive gases such as sulphurous acid gas, which will lead to the corrosion of the copper tube, welding joint, etc., causing refrigerant leakage.
Page 225 Combinations This series is cooling and heating heat recovery models. Only when the system is equipped with valve box, indoor units under different valve boxes can achieve cooling and heating simultaneously. The modes of the indoors which under the same valve box should be the same. If the indoors connected without valve box, the indoors only can do cooling mode.
Page 226 1. Pre-installation The installation location selected shall meet the following conditions and be approved by users. • The strength shall be sufficient to withstand the weight of the valve box • There is no significant tilt on the plane. • Ensure that there is enough space for installation and maintenance.as show in Fig.1 •...
Page 227 2. Preparation before installation 1 (25) 2 7/8( 73) 1 (25) 3 5/16 （ 84） 3 1/4 (82) 1 (25) 2 11/16 （69） 2 9/16( 65) 15 1/4 （388） 7 7/8 (200) See the Fig.1 & Fig.2 to install the lifting bolts and hoisting tools. Use the lifting bolts with the size of M8~M10 Press insert for new settings.
Page 228 3. Installation of valve box Use parts and components specified for installing the installation components. (1) Change the installation direction of electric box according to requirements following the steps below; (see Fig.1) Remove the cover of the electrical appliance box; (2 screws) Remove the electrical appliance box;...
Page 229 Nut (purchased locally) Gasket (purchased locally) Lifting tool 10-15mm Valve box Double nuts (purchased locally) Lifting bolt (purchased locally) Fig.6 4. Refrigerant pipe Installation • Pipes between the outdoor unit and valve box, selection of refrigerant branching suite, and the Pipe between refrigerant branching suites and the indoor units, please refer to the installation instructions or equipment design data attached to the outdoor unit.
Page 230 <Notes> • Please do not let any type of gas other than the specified refrigerant go into the refrigeration system; • In case of refrigerant leakage during operation, please replace the gas. (Fill the refrigerant at the outdoor unit) Select piping material •...
Page 231 <Table-3> Tightening torque Pipe size OD Tightening torque Machined flare size Machined flare size Flare shape inch. (mm) (N.m) A (mm) A (mm) (lbf.ft) 1/4 (6.35) 14.2~17.2 10.5~12.7 8.7~9.1 0.34~0.36 3/8 ( 9.52) 32.7~39.9 24.1~29.6 12.8~13.2 0.50~0.52 1/2( 12.7) 49.5~60.3 36.5~44.7 16.2~16.6 0.64~0.65...
Page 232 <Note> • For pipe welding, do not use antioxidant, for its residue may cause tube blocking and component fault. • For pipe welding, do not use flux. If the flux is chlorine product, it will corrode the tube; if it contains fluorine, it will even cause detrimental effects to the refrigerant system, such as refrigerant oil deterioration.
Page 233 <Table 6> Dimensions (mm) of connection tube of the indoor units Pipe dimensions (OD × minimum wall thickness) Total capacity type of the indoor units (×100W) Gas pipe Liquid pipe 22, 28 3/8 (9.52)×0.8 1/4(6.35)×0.8 36, 45, 56 1/2(12.7)×0.8 1(6.35)×0.8 71, 80, 90, 112, 140 5/8(15.88)×1.0 1(25.4)×1.2...
Page 234 Note HP gas pipe (*1) Gas pipe (*1) Valve box (Top side) Suction gas pipe (*1) Liquid pipe (*1) Liquid pipe (*1) Flare nut (*2) Flare nut (*2) Auxiliary pipe Flare nut (*2) Auxiliary pipe Flare nut (*2) Gas pipe (*1) Gas pipe (*1) Valve box (Top side) Valve box (Top side)
Page 235 (Note1): Auxiliary pipe -1,2,3: Install the flare nuts first and then use the auxiliary pipe after being flared in the field. Enlarge pipe Flare nut (*2) Gas pipe (*1) Fig.14 280B The total capacity of the indoor unit in the downstream is more than 18.0 kW but less than 22.4 kW. Auxiliary pipe Auxiliary pipe Auxiliary pipe...
Page 236 Pipe insulation Please use the auxiliary insulation cylinder and anchor for insulation works according to Fig.17 after the gas leakage test. Tie wire (large) Insulation pipe HP gas pipe (*1) Gas pipe (*1) Suction gas pipe (*1) Insulation pipe Valve box (Top side) Liquid pipe (*1) Liquid pipe (*1) Tie wire (small)
Page 237 Warning • Electrical construction should be made with specific mains circuit by the qualified personnel according to the installation instruction. Electric shock and fire may be caused if the capacity of power supply is not sufficient. • During arranging the wiring layout, specified cables should be used as the mains line, which accords with the local regulations on wiring.
Page 238 Graphical representation for wiring Connect the communication terminal block P and Q of the main unit of the outdoor units with the communication terminal block P and Q of the first valve box (VP 1). Outdoor 1 Outdoor 2 Outdoor 3 To power supply 1PH,220-230V~, The communication wire of valve...
Page 239 Connect wires with the It’s forbidden to connect Wires with different same diameter on both two wires on one side diameters are not allowed sides (6) Tighten terminal screws with proper screw driver. Screw driver of small dimension will damage the screw head and fail to tighten properly.
Page 240 VP4-450B*1 VP4-450B *2 VP4-450B *3 VP4-450B *4 Branching Number of Connectable Indoor Units Total indoor unit qty. Capability per branch ≤54.6kBTU(16kW) ≤54.6kBTU(16kW) ≤54.6kBTU(16kW) ≤54.6kBTU(16kW) Total capacity ≤153.5kBtu/h(45kW) ≤242.3kBTU(71kW) ≤242.3kBTU(71kW) ≤242.3kBTU(71kW) Dimension 4×7/8 4×2 2-1/2 2-1/22-1/2 6-1/4 2-1/2 2-1/2 2-1/2 1-3/4 6-1/4 15-1/2 8-3/8...
Page 241 Piping diagram LEVhi LEVlo LEVhi LEVlo LEVhi LEVlo LEVhi LEVlo Liquid pipe （Ø15.88 ） High pressure gas pipe （Ø28.58 ） Gas pipe （Ø28.58 ）...
Page 242 Wiring diagram i l T i l T i l T i l T s q`...
Page 243 Installation HP gas Pipe (Ø28.58) Plug Suction gas Pipe (Ø28.58) Plug Liquid Pipe (Ø15.88) Gas Pipe (Ø15.88) 比例 25.40 0 Liquid Pipe (Ø9.52) Before installation , be sure to remove the plug .When the valve box is connected with the outdoor unit, the left side of the three pipes or the right side of the three pipes can be selected according to the actual installation requirements.
Page 244 • If the valve box is transferred to a new user, this manual shall be transferred to the user, together with the conditioner. • Before installation, be sure to read Safety Considerations in this manual for proper installation. • The safety considerations stated below is divided into “ Warning”...
Page 245 • When contacting electrical components, ensure they are powered off. Contacting the live part may result in the danger of electric shock. • If there is leakage of the refrigerant gas flow during operation, refrigerant gas is required. If the refrigerant gas contacts any fire, poisonous gases will be produced.
Page 246 Do not install at such places 1. A place that is filled with mineral oil, a kitchen which has oil and steam everywhere, etc., which may cause degradation, falling off and water leakage of the resinous components. 2. A place with corrosive gases such as sulphurous acid gas, which will lead to the corrosion of the copper tube, welding joint, etc., causing refrigerant leakage.
Page 247 VP4-450B Specification Quantity Shape 3/8(9.52) 5/8(15.88) <Entrustment> Before the installation is completed, do not abandon the accessories needed in installation. Combinations • This series is cooling and heating heat recovery models. Only when the system is equipped with valve box, indoor units under different valve boxes can achieve cooling and heating simultaneously.
Page 248 Inspection item Pay much attention to the following during installation. Check them again after completion. (1) Inspection items after installation Inspection item Defect Inspection column If the installation of valve box is secure ? Falling off, vibration and noise If gas leakage inspection is completed ? No heating/cooling If complete insulation is achieved (refrigerant piping Water leakage...
Page 249 1. Pre-installation The installation location selected shall meet the following conditions and be approved by users. • The strength shall be sufficient to withstand the weight of the valve box • There is no significant tilt on the plane. • Ensure that there is enough space for installation and maintenance.as show in Fig.1 •...
Page 250 2. Preparation before installation (1) Valve box dimension (mm) 2-1/2 2-1/22-1/2 4×7/8 4×2 2-1/22 -1/2 2-1/2 6-1/4 1-3/4 6-1/4 15-1/2 8-3/8 11-1/2 7-1/22 -1/4 5-11/16 4-5/16 32-11/16 See the Fig.4 to install the lifting bolts and hoisting tools. • Use the lifting bolts with the size of M8~M10 •...
Page 251 3. Installation of valve box Use parts and components specified for installing the installation components. Install the all thread rod, washers and nuts according to the instruction of the Fig.5 Be sure to follow the stipulations on products locally purchased to use nuts 3/8” of 3 pieces for 4 positions) and washers on the upper and lower sides of the lifting tools.
Page 252: Optional Accessories
The high-pressure gas pipe, suction gas pipe, liquid pipe must be provided with reliable thermal insulation. In the absence of thermal insulation, liquid leakage may happen. The outdoor unit is already filled with refrigerant. To connect the pipes to valve box or remove them from valve box, do use both spanner and torque wrench, as shown in the Fig.6.
Page 253 Wall thickness and size: select proper sizes according to Selection of piping dimensions • For the permissible maximum length, permissible elevation difference and permissible length after branching, please refer to the installation instructions or technical data attached to the outdoor unit. •...
Page 254 <Table-2> Pipe size OD Recommended tool length Tightening angle inch. (mm) inch. (mm) 1/4(6.35) 60°~90° 5.90(150) 3/8(9.52) 60°~90° 7.87(200) 1/2(12.7) 30°~60° 9.84(250) 5/8(15.88) 30°~60° 11.81(300) 3/4(19.05) 20°~35° 17.72(450) 7/8(22.22) 15°~30° 23.62(600) Ø19.05 pipe connected on site Apply refrigerant oil Valve box Welding Accessory pipe Ø19.05 pipe connected on site...
Page 255 Selection of piping dimensions Select refrigerant branching dimensions between outdoor units and valve box, between valve box and indoor units according to the following connection examples 1 and 2 and Tables 1-3. Connection example 1: Connect an indoor Connection example 2: with branching in the unit to the downstream of the valve box downstream of the valve box Downstream...
Page 256 <Table 2> Dimensions (mm) of connection tube of the indoor units Indoor (×100W) Gas pipe (mm) Liquid pipe (mm) 7.5~9.5(22~28) 3/8(9.52)×0.8 1/4(6.35)×0.8 12.3~19.1(36~56) 1/2(12.7)×0.8 1/4(6.35)×0.8 24.2~38.2(71~112) 5/8(15.88)×1.0 3/8(9.52)×0.8 Note: High wall 0.8/1HP gas pipe: Ø12.7 High wall 2HP gas pipe/liquid pipe: Ø15.88/Ø9.52 <Table 3>...
Page 257 Suction gas Pipe (1-1/8" (28.58)) Welding HP gas Pipe (1-1/8 (Ø28.58) Welding Liquid Pipe (5/8" (15.88)) Gas Pipe (Ø15.88) Flare nut Indoor unit Suction gas Pipe 1-1/8" (28.58) Welding Welding HP gas Pipe Sealing cap 1-1/8 1-1/8 Valve box (Top side) (Ø28.58 (28.58 Welding...
Page 258 Pipe insulation Please use the auxiliary insulation cylinder and anchor for insulation works according to Fig.12 after the gas leakage test. Tie wire (small) Tie wire (small) Insulation pipe Insulation pipe Valve box (Top side) Tie wire (small) Tie wire (small) Insulation pipe Insulation pipe Tie wire (small)
Page 259 For installation of insulation materials for the flare Field pipe Auxiliary pipe nut connections, it shall be cautioned that: side of the (1) Please connect it tightly so as to ensure no gas insulation pipe leakage at both ends. Tube side of vale box of the insulation pipe (2) The retaining clamp shall not be over tight so as to ensure the thickness of the insulation materials.
Page 260 The wiring for the power line and signal line of valve box The wiring for the power line of valve box, the wiring for the signal line between valve boxes and outdoor units as well as the wiring between valve boxes. Items Cross Sectional Area of Signal Line Rated...
Page 261 (3)Two-core nonpolar communication line with shield shall be adopted for communication lines between the valve box and the indoor/outdoor unit. Three-core polar communication line with distinguished polarities and shield shall be adopted for the wire controller connected to the indoor unit. (4)All valve boxes within one system may share one overcurrent breaker for power supply.
Page 262: Selection Procedure
21. Selection procedure Selection procedure Calculate each indoor load separately Select the indoor units that matches the indoor load Perform temperature correction to calculate the actual capacity Reselect the of the indoor unit indoor units Select the outdoor units Indoor actual capacity indoor load ≥...

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