Инструкции на Наружные индивидуальные блоки VRF-системы V4+ (сервис мануалы) бренда MDV

1. Product lineup

2. Nomenclature

3. Features

3.1 Wide application range 3.1.1 Wide capacity range The whole product lineup of V4+I series will be from 7HP to 30HP, which is designed to optimize performance and better match varieties of application requirement. Especially, the integrated designed V4+I series is focus on provide better air…

3.2 High efficiency

3.2.1 High efficiency DC inverter compressor High efficiency DC inverter compressor reduces poser consumption by 25%. New structure enhanced mid-frequency performance Special designed scroll profile for R410A More compact, weight reduced by 50% Advanced permanent magnet DC motor improves…

3.3 Enhanced comfort

3.3.1 Intelligent soft start technology DC inverter compressor soft start function reduces strike to the electric network. This kind of high-performance and low sound scroll compressor operates at a faster rate when starting, reducing start-up time. It also helps the unit to quickly adjust the room…

3.4 Easy installation and service

3.4.1 Compact design for effective use of space Easy to transport Compact size and light weight design minimizes the installation footprint, reduces the installation floor load, and easier for transportation. For some projects the units can even be transported through the elevator or forklift…

3.4.4 Auto addressing

Outdoor unit can distribute address for each indoor unit automatically. Wireless and wired controllers can enquire and modify each indoor unit’s address. 3.4.5 Easy maintenance Reserved checking window on electric control box for convenient spot checking and status enquiry. Compressor is located…

4. Indoor units lineup

Cassette type Capacity One-way cassette Two-way cassette Compact four-way cassette ● ● Four-way cassette (×100W) 22 28 ● ● ● ● 36 ● ● ● ● 45 ● ● ● ● 56 ● ● ● ● ● 71 80 ● 90 ● 100 ● 112 ● 140 ● Duct type Capacity (×100W) Low static Medium static pressure duct pressure duct 18 ● 22 ● ● 28 ● ● 36 ● ●…

Indoor units lineup

Floor-standing/Ceiling & Floor/Console Cased floor-standing Uncased floor-standing Ceiling & floor console 22 ● ● ● 28 ● ● ● 36 ● ● ● ● 45 ● ● ● ● 56 ● ● ● 71 ● ● ● 80 ● ● ● Capacity (×100W) 90 ● 112 ● 140 ● 160 ● Wall mounted/Fresh air processing unit Wall mounted Wall mounted Wall mounted (S…

1. Specifications

Model MDV-560W/DRN1-i(C) MDV-615W/DRN1-i(C) MDV-670W/DRN1-i(C) V-Ph-Hz 380-415/3/50 380-415/3/50 380-415/3/50 Capacity kW 56.0 61.5 67.0 Power input kW 17.0 18.8 20.8 3.30 3.27 3.22 Power supply Cooling EER Heating DC inverter compressor Capacity kW 63.0 69.0 75.0 Power input kW 16.0 17.9 19.8 COP…

Diameter

R410A DC Inverter VRF V4 Plus Individual Series 50Hz mm Height 562/700 700/700 700/700 162/202 200/202 200/202 External static Pa 0-20 (default) 0-20 (default) 0-20 (default) pressure Pa 20-40 (customized) 20-40 (customized) 20-40 (customized) mm 22×19 22×19 22×19 mm 1.6 1.6 1.6 Hydrophilic fin…

2. Dimensions

3. Service space

 Ensure enough space for maintenance. The modules in the same system must be on the same height. When installing the unit, leave enough space for maintenance. (Air-out) (Air-out) >1m (Air-out) (Air-in) (Air-in) (Air-in) (Air-in) >1m >1m >0.1m >1m >0.1m Top view of the outdoor unit Installation and…

4. Piping diagrams

Key components: Oil separator: It is used to separate oil from high pressure and high temperature gas refrigerant, which is pumped out from compressor. The separation efficiency is up to 99%, it makes the oil return back to each compressor very soon. Gas-liquid separator: It is used to store the…

5. Wiring diagrams and field wiring

Specifications & Performances 17

6. Field wiring

 The control line should be shielded wire. Using other wiring shall create signal interference, thus leading to error operation.  The shielded nets at the two sides of shielded wires are either grounded to the earth, or connected with each other and jointed to the sheet metal along to the earth. …

7. Electric characteristics

Units Model Hz Power supply Compressor Voltage Min. Max. MCA TOCA MFA MSC RLA (V) (V) (V) (A) (A) (A) (A) (A) -/62/6 17.8+ 2 8.8×2 -/68/6 17.8+ 8 9.8×2 -/80/8 17.8+ 0 12×2 MDV-560W/DRN1-i(C) 50 380~415 MDV-615W/DRN1-i(C) 50 380~415 MDV-670W/DRN1-i(C) 50 380~415 342 440 47.4 50.8 55 OFM kW FLA (A)…

8. Capacity tables

8.2 Heating capacity

9. Sound levels

Front 1.3m 1m Notes: • Data is valid at free field condition • Data is valid at nominal operating condition • Sound level will vary depending on a range of factors such as the construction (acoustic absorption coefficient) of particular room in which the equipment is installed • Sound level can be…

10. Accessories

10.1 Standard accessories Name Shape Quantity Function Installation manual of outdoor unit 1 / Operation manual of outdoor unit 1 / Operation manual of indoor unit 1 / Guideline of outdoor unit main control board 1 / Screw bag 1 Be used in maintenance Straight screwdriver 1 Matched resistance…

1. Introduction

1.1 Model selection procedure Select the model and calculate the capacity for each refrigerant system according to the procedure shown below.  -conditioning load, Calculate the maximum air-conditioning load for each room or zone. Selection of an air conditioning system  m for air conditioning of…

rooms may be considered

The indoor and outdoor unit combination is determined that the sum of indoor unit capacity index is nearest to and smaller than the capacity index at 100% combination ratio of each outdoor unit. Up to 8~16 indoor units can be connected to one outdoor unit. It is recommended to choose a larger…

H(m)

100% 20 10 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 L(m) L: Refrigerant pipe equivalent length H: Height difference between outdoor and indoor unit. Positive data means outdoor unit is top. Negative data means outdoor unit is down. 1.5.2 Heating capacity modification Modification coefficient of…

2. Unit selection (based on cooling load)

2.1 Given condition Condition: Cooling: indoor temperature 20oCWB, outdoor temperature 35oCDB; Cooling load Location Room A Room B Room C Room D Room E Room F Room G Room H Load (kW) 5.9 5.8 7.5 7.3 7.9 5.5 4.5 7.8 Power supply: outdoor 380~415V-3Ph-50Hz, indoor 220~240V-1Ph-50Hz. Piping length…

2.4 Conclusion

Generally, we think this result is acceptable, so we can think we have accomplished the calculation. But if you think this result is not acceptable, you can repeat the above process. Remark: In this sample, the other capacity modification indexes don’t be considered and are assumed as 1.0. For more…

1. Select installation position

 Ensure that the outdoor unit is installed in a dry, well-ventilated place.  Ensure that the noise and exhaust ventilation of the outdoor unit do not affect the neighbors of the property owner or the surrounding ventilation. Ensure that the outdoor unit is installed in a well-ventilated place that…

B

C D A 15×23 long u-shape hole Size (mm) 20HP 22/24HP A 1260 1455 B 1390 1585 C 736 736 D 765 765 3. Installation space  Ensure enough space for maintenance. The modules in the same system must be on the same height.  When installing the unit, leave enough space for maintenance. (Air-out) (Air-out)…

>1m

More than two rows  Front >1m Front Front Front Front ＞0.1m >0.8m >1m Front >1m >1m When the outdoor unit is lower than the surrounding obstacle, to avoid cross connection of the outdoor hot air from affecting the heat exchange effect, please add an air director onto the exhaust hood of the outdoor…

Use 4 steel wires of the size above Φ6mm to convey the outdoor unit. Pay attention to the gravity center  and prevent sliding and tip-over of the outdoor unit. In order to prevent scratch and deformity the outdoor unit, apply a guard board to the surface of contact between the steel wire and the…

20HP

22/24HP

Static Size (mm) A A≥300 B C B≥250 C≤3000 D E 725≤D≤760 E=A+725 θ θ≤15 o pressure 0Pa Note Factory default 0~20Pa Remove the steel meshes, connect the air deflector pipe within 3 meters (length of C) Over 20Pa Need to be customized Note: Before install the ventilation assembly, please remove the…

7. Refrigerant piping installation

Unit: mm Gauge point Lo. pressure Detect the pressure Refrigerant replenishment vacuumizing Gas side (The connected pipe diameter is Φ31.8) Liquid side (The connected pipe diameter is Φ19.1) Oil discharge valve 180 220 Lo.pressure Detect and discharge the refrigeration oil 155 190 R1,R2 section view…

7.2 Refrigerant piping length permitted value

 Table 3: Main pipe selection (L1)

8. Branch pipe installation

The branching pipe must be installed horizontally and error angle of it should not be larger than 10°. Otherwise, refrigerant assignment will be uneven and malfunction will be caused. U-shaped branching pipe A A direction view Wrong Correct 10° 10° Horizontal surface 9. Remove dirt or water in the…

11. Vacuum

 Use the vacuum pump which vacuum level lower than -0.1MPa and the air discharge capacity above 40L/min.  The outdoor unit is not necessary to vacuum, don’t open the outdoor unit gas and liquid pipe shut -off valves.  Make sure the vacuum pump could result as -0.1MPa or below after 2 hours or…

When only partial indoor units are in cooling or heating mode, the system will not judge the refrigerant volume and the digital tube will reserve the last judging result. Error code Content r1 Lack of refrigerant r2 Obvious lack of refrigerant r3 Serious lack of refrigerant R1 Too much refrigerant…

14.2.2 Indoor unit powering supply

wiring Single-phase 220~ 50/60Hz Leakage protector Manual switch 1 2 Branch box Indoor unit Note:  Set refrigerant piping system, signal wires between indoor units and signal wires between outdoor units into one system.  Power must unified supply to all indoor units in the one system.  Please do…

1.4.3.3 Signal wire of centralized control

Signal wire of ce ntralized control When centralized control is needed, one CCM03 (central controller of indoor unit) can only control the indoor units which are in the same refrigerant system via the port X Y E of outdoor unit. Outdoor unit will automatically distribute the address to indoor units…

15. Running test

15.1 Inspection and confirmation before commissioning  Check and confirm that refrigeration pipe line and communication wire of indoor and outdoor units have been connected to the same refrigeration system. Otherwise, operation troubles shall happen.  Power voltage is within ±10% rated voltage. …

15.4 Caution on refrigerant leakage

 This air conditioner adopts R410A as refrigerant, which is safe and noncombustible.  The room for air conditioner should be big enough that refrigerant leakage cannot reach the critical thickness. Besides this, you can take some action on time. 3  R410A critical thickness: 0.3 [kg/m ], (Critical…

1. Outdoor electric control box assembly instructions

Top view of lower layer electric control box Top view of whole electric control box No. Content 1 Terminal, 4P 2 Compressor capacitor 3 Contactor 4 Reactor 5 Contactor 6 Thermistor 7 Aluminum electrolysis capacitor 8 DC fan module 9 Filter board 10 Compressor inverter module 11 Three-phase bridge 12…

2. Outdoor main control board instructions

2.1 Main control board ports instructions 72 Troubleshooting

Outdoor main control board ports instructions

chiip

EEPROM Module chip Main control 2.2 Main control board parts instructions SW2: Query LED digital dial switch chip Communication cooling button SW1: Forced S2 S12 S3 S4 S5 S6 ENC4 tube display Function setting 74 dial switch System setting ENC2 ENC3 ENC1 S1 button Troubleshooting

2.2.1 Query content instructions

No. Normal display Content (present frequency) Note 1 0.- - Outdoor unit address 0 (individual type) 2 1.- - Outdoor unit capacity setting 1 Refer to note 1 3 2.- - Outdoor unit quantity Available for No.0 outdoor unit 4 3.- - Setting quantity of indoor units Available for No.0 outdoor unit 5 4.…

2.2.2 System setting dial switches instructions

ENC2: Outdoor unit capacity setting ENC2 Outdoor unit capacity setting: 0-8 are available (6-8 stand for 8-24HP) ENC3+S12: Quantity of indoor units setting ENC3 ENC3 ENC3 ENC3 S12 ON Quantity of indoor units is setting as 0-15 S12 ON Quantity of indoor units is setting as 16-31 S12 ON Quantity of…

2.2.3 Function setting dial switches instructions

S2: Night silent time selection S5: Locking modes selection Nighttime silent time 6h/10h Heating priority mode (factory default) (factory default) Nighttime silent time 6h/12h Cooling priority mode No.63 indoor unit running mode priority when Nighttime silent time 8h/10h there has No.63 indoor unit…

2.3 LED on main control board instructions

LED3 LED2 LED1 LED5 LED4 LED1: Power supply indicator lamp of network centralized control chip. The lamp will be on if the power supply is normal. LED2: Running indicator lamp of network centralized control chip. The lamp will be on if the system running is normal. LED3: Malfunction indicator lamp…

3. Error code table

Error code Content E0 Outdoor unit address error E1 Phase sequence error E2 Indoor units and master unit communication error E3 Reserved E4 Pipe temp T3/ambient temp T4 sensor error E5 Voltage error E6 Reserved E7 Discharge temp sensor error E8 Reserved H0 Communication error between main control…

The large capacity V4+ individual system (20/22/24HP) have the function of refrigerant volume automatic judgment. When all the indoor units are in cooling or heating mode, the system will be in refrigerant volume judgment mode automatically. If the system judges that the refrigerant volume is…

4. Troubleshooting

4.1 E0: Outdoor unit address error E0: Outdoor unit address error ODU addresses (ENC1) are set incorrectly. (Only 0 is effective for individual outdoor unit) Yes Set outdoor units address as 0 No Outdoor main control board is damaged Replace the outdoor main control board 4.2 E1: Phase sequence…

4.3 E2: Indoor units and outdoor unit communication error

E2: Indoor units and outdoor unit communication error Communication wires P, Q, E are short circuit or disconnected (Measure the resistance among P Q and E, the normal resistance is 120Ω) Yes Reconnect the communication wires Yes Connect the communication wires in line shape Yes Ensure the…

Note

1. Press indoor unit’s receiver button for 5 seconds, the indoor unit’s communication address code is displayed; press it for 10 seconds, power code is displayed. Check every unit's address code. Codes are as follows: Director light Running Timer Fan/defend cold fan Warning Code Address Capacity…

4.4 E4: Pipe temp T3/ambient temp T4 sensor error

E4: T3/T4 sensor error T3/T4 port on main control board is loose Yes Fasten the T3/T4 port No T3/T4 sensor is short circuit or disabled (Using a multimeter to measure resistance, if the resistance is too small, the sensor is short circuit, if the resistance in certain temperature is not consistent…

4.5 E5: Voltage error

E5: Voltage error Voltage of power supply is too high or too low (the normal voltage between A and N (B and N, C and N) should be 163V~268V) Yes Provide normal power supply No Check the high voltage circuit. Whether the compressor is short circuit①, fan motor is short circuit②, inverter module is…

4.6 E7: Discharge temp sensor error; P4: Discharge temperature protection; H6: P4 protection appears

three times in 100 minutes E7/P4/H6 T7C2/T7C3/T7C4 sensor is short circuit or disabled①. Yes Replace the sensor No System is lack of refrigerant②. (Refrigerant recharging is not according to the requirement, or there has refrigerant leakage) Yes Add refrigerant or check up the leakage of the system…

4.7 H0: Communication error between main control chip and module chip; H1: Communication error

between main control chip and communication chip H0/H1 Power supply for 17(CN32), 18(CN34) and 23(CN35) terminals are abnormal① Yes Provide normal power supply No The transformer on main control board is disabled② Yes Replace the transformer No There has electromagnetic interference nearby the unit.…

4.8 H7: Quantity of indoor units decrease error

H7 error will display when the quantity of indoor units decrease above 3 minutes. H7: Quantity of indoor units decrease error Communication terminals P Q E are loose Yes Fasten the communication terminals Yes Set the IDU addresses differently No Some IDU are assigned the same address No Some IDU are…

4.9 H8: High pressure sensor error

When the discharge pressure is lower than 0.3MPa, the system will display H8 error, the ODU in standby. When the discharge pressure is back to normal, H8 disappears and normal operation resumes. H8: High pressure sensor error High pressure sensor connection Yes port on main control board is loose…

4.10 HC: Outdoor unit capacity setting of dial switch error

HC: Outdoor unit capacity setting of dial switch error Yes Set outdoor units address as 0 ODU capacity (ENC2) is set incorrectly. (Only 6,7,8 are effective for 20-24HP individual series) No Replace the outdoor main control board Outdoor main control board is damaged 4.11 P1: High pressure protection…

value, compressor makes noise, pressure meter do not display steady

*The normal system running parameters please refer to attached table 3. *If the system install three-phase protector, and the three-phase protector connect with high pressure switch in series connection, the system will display P1 protection when fist power on, and P1 protection will disappear after…

(X refers to fixed compressor sequence number) P3: When the current of inverter compressor is over12A, the system will display P3 protection, the ODU in standby. When the current goes back to normal range, P3 disappear s and normal operation resumes. XP7: Current protection of No.1/No.2 fixed…

value, compressor makes noise, pressure meter do not display steady

5. How to check whether compressor is error⑤: Measure the resistance between two terminals among the three terminals of compressor. The resistance between two terminals is 2-5Ω, the resistance between each terminal and ground is infinity, if the resistance is out of the normal range, the compressor…

P6, L0~L9 error codes can’t display on digital tube automatically, these error codes will display on digital tube only through SW3 button (pressure SW3 ten times, every one second for a time) If the system display three times P6 protection in 60 minutes, the system will stop and display H4 error…

DC generatrix check

Direction of the current in DC supply wire is running through the inductor should be the same as the direction of arrow marked on the inductor 1) Check the voltage of DC generatrix, the normal value should be 510 to 580V. If the value is less than 510V, go to next step. 2) Check the wiring…

Step 1: Replace the modular with correctly wire connection and start the system, if system is still malfunction, then go to step2 to check the compressor. Step 2: Take out the compressor from the malfunction system, short-circuit the suction and the discharge, vacuum dry and charge 0.3kg~0.4kg…

4.15.2 L1/L4 troubleshooting

Step 1: Check the DC voltage between P and N terminal, the normal value should be 510V~580V, if the voltage is lower than 510V, go to step 2. Step 2: Check whether the wires of rectifier circuit are loose or not. If wires are loosen, fasten the wires. If wires are OK, replace the main control board.…

If the system display three times P9 protection in 60 minutes, the system will stop and display H9 error code. When the system displays H9 error code, the system can resume only by restarting the machine. At this time, malfunction should be disposed promptly to avoid further damage. P9/H9: Fan…

P9 protection analysis

Conditions Fault indicator Power supply Digital lamp of fan indicator lamp tube module of fan module display Malfunction analysis Check the power supply circuit for fan module. Power on Off Off Quantity Check whether there has power supply for lightning of IDU or protection plate, whether the…

Attached table 1: Resistance value of ambient temperature and pipe temperature sensor

Temperature (℃) Resistance value (kΩ) Temperature (℃) Resistance value (kΩ) Temperature (℃) Resistance value (kΩ) Temperature (℃) Resistance value (kΩ) -20 115.266 20 12.6431 60 2.35774 100 0.62973 -19 108.146 21 12.0561 61 2.27249 101 0.61148 -18 101.517 22 11.5 62 2.19073 102 0.59386 -17 96.3423…

Attached table 2: Resistance value of compressor discharge temperature sensor

Temperature (℃) Resistance value (kΩ) Temperature (℃) Resistance value (kΩ) Temperature (℃) Resistance value (kΩ) -20 542.7 20 68.66 60 13.59 100 3.702 -19 511.9 21 65.62 61 13.11 101 3.595 -18 483 22 62.73 62 12.65 102 3.492 -17 455.9 23 59.98 63 12.21 103 3.392 -16 430.5 24 57.37 64 11.79 104…

Attached table 3: Commissioning and operating parameters of refrigerant system

Conditions 1 : Make sure outdoor unit can detect all the indoor units, the quantity of indoor units display steadily and be equal to actual quantity of installed indoor units. Conditions 2: Make sure all the valves in outdoor unit are open, indoor units EXV have connected to indoor PCB. Conditions 3…

Инструкции на Наружные индивидуальные блоки VRF-системы V4+ (сервис мануалы)

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