Midea MHC-V9W/D2N1 Installation & Owner's Manual
  1. Manuals
  2. Brands
  3. Midea Manuals
  4. Heat Pump
  5. MHC-V9W/D2N1
  6. Installation & owner's manual

Midea MHC-V9W/D2N1 Installation & Owner's Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

INSTALLATION & OWNER'S MANUAL
MHC-V5W/D2N1
MHC-V7W/D2N1
MHC-V9W/D2N1
MHC-V10W/D2N1
MHC-V12W/D2N1
MHC-V14W/D2N1
MHC-V16W/D2N1
MHC-V12W/D2RN1
MHC-V14W/D2RN1
MHC-V16W/D2RN1
Original instructions
Thank you very much for purchasing our product.
Before use, please carefully read this manual and keep it for future reference.

Advertisement

Table of Contents
loading

Related Manuals for Midea MHC-V9W/D2N1

Summary of Contents for Midea MHC-V9W/D2N1

  • Page 1 INSTALLATION & OWNER’S MANUAL MHC-V5W/D2N1 MHC-V7W/D2N1 MHC-V9W/D2N1 MHC-V10W/D2N1 MHC-V12W/D2N1 MHC-V14W/D2N1 MHC-V16W/D2N1 MHC-V12W/D2RN1 MHC-V14W/D2RN1 MHC-V16W/D2RN1 Original instructions Thank you very much for purchasing our product. Before use, please carefully read this manual and keep it for future reference.
  • Page 2 Figure 1） Figure 2） 5/7/9 kW 10/12/14/16 kW Wiring diagram:12-16kW(3-phase) for examples 5/7/9 kW Hydraulic System 10/12/14/16 kW Please remove the hollow plate after installation.

  • Page 3: Table Of Contents

    1 INTRODUCTION 1.1 General information CONTENTS PAGE ■ These units are used for both heating and cooling applications. They can be combined with fan coil units, floor heating INTRODUCTION..............1 applications, low temperature high efficiency radiators, domestic ACCESSORIES..............2 hot water tanks (field supply) and solar kits (field supply). 3 SAFETY CONSIDERATIONS..........2 ■...

  • Page 4: Accessories

    DOMESTIC WATER HEATING MODE 3 SAFETY CONSIDERATIONS The precautions listed here are divided into the following types. They are quite important, so be sure to follow them carefully. Meanings of DANGER, WARNING, CAUTION and NOTE symbols. DANGER Indicates an imminently hazardous situation which if not avoided, will result in death or serious injury.

  • Page 5: Before Installation

    CAUTION 4 BEFORE INSTALLATION ■ Ground the unit. Before installation Grounding resistance should be according to local laws and Be sure to confirm the model name and the serial number of the unit. regulations Handling Do not connect the ground wire to gas or water pipes, Due to relatively large dimensions and heavy weight, the unit should lightning conductors or telephone ground wires.
  • Page 6 atmosphere. The position of barycenter for different unit can be seen in the - Places where servicing space can be well ensured. picture below. - Places where the units' piping and wiring lengths come within the allowable ranges. - Places where water leaking from the unit cannot cause damage to the location (e.g.

  • Page 7: Precautions On Installation

    7 If you install the unit on a building frame, please install a waterproof plate (field supply) (about 100 mm, on the underside of the unit) in order to avoid drain water dripping. (See the picture in the right). Φ10 Expansion bolt Concrete...
  • Page 8 7.1 Installation servicing space (A) In case of stacked installation (B) In case of multiple-row installation (for roof top use, etc.) 1. In case obstacles exist in front of the outlet side. 1. In case of installing one unit per row. ＜1/2 H Unit A(mm)

  • Page 9: Typical Application Examples

    8 TYPICAL APPLICATION EXAMPLES The application examples given below are for illustration purposes only. 8.1 Application 1 Space heating only application with a room thermostat connected to the unit....FHL1 FHL2 FHLn room thermostat (field supply) outdoor unit drain valve (field supply) 1.1 manometer fill valve (field supply)
  • Page 10 8.2 Application 2 Space heating only application without room thermostat connected to the unit. The temperature in each room is controlled by a valve on each water circuit. Domestic hot water is provided through the domestic hot water tank that is connected to the unit. 13.3 13.1 13.2...
  • Page 11 CAUTION Make sure to fit the 3-way valve correctly. For more details, refer to 9.6.6 Connection for other components/For 3-way valve SV1. NOTE The unit can be configured so that at low outdoor temperatures, water is exclusively heated by the booster heater. This assures that the full capacity of the heat pump is available for space heating.
  • Page 12 ■Pump operation and space heating and cooling According to the season, the unit will switch to either heating or cooling mode according to the temperature detected by the room thermostat. When space heating/cooling is requested by the room thermostat (5), the pump will start operating and the unit (1) will switch to heating mode/cooling mode.
  • Page 13 NOTE If the volume of balance tank(9) is larger than 30L, the buffer tank(8) is unnecessary, otherwise the buffer tank(8) should be installed and the total volume of balance tank and buffer tank should larger than 30L.The drain valve (6) should be installed at the lowest positon of the system. For 5/7/9kW unit, the backup heater (1.5) is not integrated in the outdoor unit.
  • Page 14 Application a Boiler provide heat for space heating only 13.3 13.1 13.2 FHL1 FHL2 FHLn Application b Boiler provide heat for space heating and domestic water heating. 13.3 13.1 13.2 24.1 ..FHL1 FHL2 FHLn...
  • Page 15 Application c Boiler provide heat for space heating and domestic water heating, but the boiler and outdoor unit are connect in series. If application c is selected, the control cable connect to the boiler should also connect to the 3-way valve (25), that is to say the 3-way valve(25) and boiler should work simultaneously.
  • Page 16 ■　During heating operation of the boiler, the boiler will operate to achieve the target water flow temperature set on the user interface. ■　Never set the target water flow temperature set point on the user interface above (60°C). NOTE Make sure to correctly configure FOR SERVICEMAN in the user interface. Refer to 10.7 Field settings/Other heating source. CAUTION ■...
  • Page 17 1 outdoor unit balance tank (field supply) 1.1 manometer 9.1 air purge valve 1.2 pressure relif valve 9.2 drain valve 1.3 expansion vessel expansion vessel (field supply) 1.4 plate heat exchanger P_o: outside circulation pump (field supply) 1.5 backup heater collector (field supply) 1.6 air purge valve bypass valve (field supply)
  • Page 18 8.7 Application 7 Space cooling and heating application without a room thermostat connected to the unit, but the temperature sensor attached in the user interface is used to control the ON/OFF of the unit. Heating is provided through floor heating loops. Cooling is provided through the fan coil units.
  • Page 19 8.8 Application 8 Space heating application and domestic hot water heating with a solar energy kit connect to the system, space heating is provided by heat pump, domestic hot water heating is provided by heat pump and solar energy kit. 13.3 13.1 13.3...

  • Page 20: Overview Of The Unit

    9 OVERVIEW OF THE UNIT 9.1 Opening the unit Door 1 gives access to the compressor compartment and electrical parts. Door 2 gives access to the hydraulic compartment and electrical 9.2 Main components parts. 9.2.1 Hydraulic compartment 15.3 TW_out 15.1 15.2 12.1 TW_in...
  • Page 21 9.2.2 Functional diagram of hydraulic compartment 9.Flow switch The flow switch checks the flow in the water circuit and protects heat exchanger against freezing and the pump against damage. 10.Pump 15.3 The pump circulates the water in the water circuit. 11.Heat exchanger The manometer provides a water pressure readout of the water circuit.
  • Page 22 Control box for 10~16KW UNIT Control box for 5/7/9 kW UNIT PCB A PCB B main control board of hydraulic module PCB C Main control board (at back of the PCB B,only for 3 phase unit) PCB A PCB B of hydraulic module The image shown here is indicative only.
  • Page 23 9.2.4 PCB for refrigerant system PCB A, Inverter module for 1-phase 10~16kW unit Reserved(CN2) 10 Input Port N For PFC Module(VIN-N) Input Port N For IPM Module(N) Output Port N Of PFC Module(N_1) 11 Input Port P For IPM Module(P) Power Supply Of W Phase For Output Port P Of PFC Module(P_1) 12 Communicate Port Between PCB A...
  • Page 24 Controls parts for backup heater(IBH) 1-phase 10~16kW 3-phase 12~16kW 1-phase 10~16kW 1 Auto thermal protector 2 Manu thermal protector 1 Auto thermal protector 3 Backup heater contactor KM4 2 Manu thermal protector 4 Backup heater circuit breaker CB 3 Backup heater contactor KM4 5 Backup heater contactor KM1 4 Backup heater circuit breaker CB 5 Backup heater contactor KM1...
  • Page 25 PCB B, Main control board for 3-phase 12~16kW unit 4 5.15.2 6.1 21 20 18 Reserved(CN68) 1 Power supply for the main PCB(CN250) 11 Port for power supply(CN41) 19 Port for down fan(CN19) 2 Port for pressure sensor(CN36) 12 Power supply for hydro-box 20 Port for up fan(CN17) 3 Port for sunction temperature sensor(CN4) control board(CN6)
  • Page 26 PCB A, Inverter board for 1 phase 5/7/9 kW unit. 1-phase 5/7/9kW To main board (CN101,CN105) Compressor connection port U V W (U,V,W) Input port N for IPM module(N) Input port P for IPM module(P) Input port for PFC inductance P1(P1) Input port for bridge Rectifiers(P5) Input port for Bridge Rectifiers(P6) Output port P of PFC(P2)
  • Page 27 PCB B, Main control board for 1 phase 5/7/9 kW unit. PCB A 1-phase 5/7/9kW Rectifier bridge input port L 10 Th temperature sensor port 2 Hydraulic compartment input port2 11 Pressure sensor port Rectifier bridge input port N 12 Port for communication between this PCB and main control board of hydraulic module Power supply N 13 P/N/+18V port...
  • Page 28 Before continuing installation of the unit, check the following: 9.3 Water pipework ■ The maximum water pressure = 3 bar. ■ The maximum water temperature is 70°C according to safety All piping lengths and distances have been taken into consideration. device setting.
  • Page 29 Example 1 2. Using the table below, determine if the expansion vessel The unit(16kW) is installed 10m below the highest point in the water pre- pressure requires adjustment. circuit. The total water volume in the water circuit is 100 L. 3.
  • Page 30 NOTE The unit is only to be used in a closed water system. Application in an open water circuit can lead to excessive corrosion of the water piping: ■ Never use Zn-coated parts in the water circuit. Excessive corrosion of these parts may occur as copper piping is used in the unit's internal water circuit.
  • Page 31 NOTE WARNING ■ Be aware of the hygroscopic property of glycol. It absorbs moisture from the environment. ■ A main switch or other means of disconnection, having a c ■ Leaving the cap off the glycol container causes the ontact separation in all poles, must be incorporated in the fixed concentration of water to increase.
  • Page 32 A Outdoor unit G P_c: Mixing pump (field supply) L Domestic hot water tank B Solar energy kit (field supply) H P_o: Outside circulation pump M Booster heater C User interface (field supply) N Contactor D Room thermostat (field supply) I P_d: DHW pump (field supply) O Power supply E Boiler (field supply)
  • Page 33 (a) Minimum cable section AWG18 (0.75 mm (b) The thermistor cable are delivered with the unit *：if the current of the load is large, an AC contactor is needed. NOTE:Please use H07RN-F for the power wire, all the cable are connect to high voltage except for thermistor cable and cable for user interface. 1.Equipment must be grounded.
  • Page 34 Field wiring guidelines ■ Most field wiring on the unit is to be made on the terminal block inside the switch box. To gain access to the terminal block, Door 1: compressor compartment and electrical parts: XT1 remove the switch box service panel (door 2). WARNING Switch off all power including the unit power supply and backup heater and domestic hot water tank power supply...
  • Page 35 For remote alarm: Door 2: electrical parts of the hydraulic compartment, backup heater:XT5（3-phase）/XT4(1-phase) Voltage Passive signal port 0.2A Wiring size 0.75mm Control port signal type Type 1 Procedure 1. Connect the cable to the appropriate terminals as shown on the diagram.
  • Page 36 For tank loop pump P_d and mix pump P_c: There are three methods for connecting the thermostat cable (as described in the picture above) and it depends on the application. Method A RT can control heating and cooling individually, like the controller for 4-pipe FCU.
  • Page 37 Procedure For defrosting signal output: 1. Connect the cable to the appropriate terminals as shown on the picture 2. Fix the cable with cable ties to the cable tie mountings to ensure Voltage 220~240VAC strain relief 0.2A Wiring size For boiler and outside circulation pump P_o: 0.75mm Type 1 Control port signal type...

  • Page 38: Start-Up And Configuration

    10 START-UP AND CONFIGURATION The unit should be configured by the installer to match the installation environment (outdoor climate, installed options, etc.) and user expertise. It is important that all information in this chapter is read sequentially by the installer and that the system is configured as applicable. 10.1 Climate related curves The climate related curves can be selected in the user interface, the curves for heating mode and ECO heating mode are the same but the default curve is curve 4 in heating mode, while in ECO mode, the default curve is curve 6 (refer to the operation manual, 6.2.2...
  • Page 39 10.2 DIP switch settings overview DIP switch 13 is located on the hydraulic module main control board (see "9.2.3 main control board of hydraulic module") and allows configuration of additional heating source thermistor installation, the second inner backup heater installation, etc. WARNING Switch off the power supply before opening the switch box service panel and making any changes to the DIP switch...
  • Page 40 10.5 Powering up the unit 10.3 Initial start-up at low outdoor ambient temperatures When power to the unit is turned on, "1%~99%" is displayed on the During initial start-up and when water temperature is low, it is user interface during initialization. During this process the user important that the water is heated gradually.
  • Page 41 Pump LED diagnosis and solutions The pump has an LED operating status display. This makes it easy for the technician to search for the cause of a fault in the heating system. 1. If the LED display lights up continuously green, it means the pump is running normally.
  • Page 42 2 If tank heater (booster heater) is avaliable, Go to FOR SERVICEMAN >DHW MODE SETTING>1.2 TANK HEATER and select “Yes”, when 1 DHW MODE SETTING “OK” pressed, the following page will appear: 1.2. TANK HEATER 1.3. DISINFECT 1.4. DHW PRIORITY 1.5.
  • Page 43 5 If the DHW pump( P_d) is avaliable, Go to FOR SERVICEMAN >DHW MODE SETTING>1.5DHW PUMP and select “YES”, when t_DI_HIGHTEMP “OK” pressed, the following page will appear,You can use ◄► and ▼▲ to scroll and adjust parameters. Use BACK to exit. T5S_DI 1.5 DHW PUMP t_DI_MAX...
  • Page 44 T4HMAX is the maximum ambient operating temperature for heat COOL mode. The unit will not work if the ambient temperature is higher. T4HMIN is the minimum ambient operating temperature for heat T4CMIN T4CMAX mode. The unit will turn off if the ambient temperature is lower. The relationship between the operation of the unit and ambient dT1SC is the temperature difference between T1 (actual outlet water temperature can be seen in the picture below:...

  • Page 45: Room Thermostat

    Use ◄ ► and ▼ ▲ to scroll and adjust the parameter. 21: 55 08 - 08 - 2015 SAT. T4AUTOCMIN is the minimum operating ambient temperature for cooling in auto mode. The unit will turn off if the ambient temperature is lower when in space cooling operation.
  • Page 46 How to set the OTHER HEATING SOURCE T1s-T1 T4＜T4_IBH_ON To set the OTHER HEATING SOURCE, go to MENU> FOR SERVICEMAN> OTHER HEATING SOURCE, Press OK. The following page will appear: If an additional heating source is available, please select YES at the corresponding position.
  • Page 47 HOLIDAY AWAY SETTING SERVICE CALL About HOLIDAY AWAY SETTING About SERVICE CALL The HOLIDAY AWAY SETTING is used to set the outlet water The installers can set the phone number of the local dealer in temperature to prevent freezing when away for holiday. SERVICE CALL.

  • Page 48: Test Run

    When CIRCULATION PUMP RUNNING is selected, the page will TEST RUN displayed as follows: 11 TEST RUN About TEST RUN TEST RUN is used to check correct operation of the valves, air Test run is on. purge, circulation pump operation, cooling, heating and domestic Circulation pump is on.

  • Page 49: Special Function

    During test run, all buttons except OK are invalid. If you want to turn The number displayed on the page is the time that the air purge has off the test run, please press OK. For example ,when the unit is in air run.
  • Page 50 During floor drying, all the buttons except OK are invalid. When During preheating for floor, all the buttons except OK are invalid. the heat pump malfunctions, the floor drying mode will turn off when If you want to turn off the preheating for floor, please press OK. the backup heater and additional heating source is unavailable.

  • Page 51: Test Run And Final Check

    ■ A PH-value below 8.0 indicates that a significant portion of the This maintenance has to be carried out by your local Midea technician. inhibitor has been depleted and that more inhibitor needs to be added.
  • Page 52 Symptom 3: Pump is making noise (cavitation) WARNING POSSIBLE CAUSES CORRECTIVE ACTION When carrying out an inspection on the switch box of the Purge air. unit, always make sure that the main switch of the unit is Water pressure at pump •...
  • Page 53 13.3 PARAMETERS CHECK IN THE UNIT To check the parameters on the refrigerant side, open door 1 and you’ll see the PCB like the following (different for 1-phase and To check the parameters of hydraulic box, open door 2 and you’ll 3-phase unit): the digital display will show the present compressor see the PCB like following, the digital display will show the frequency (‘0’...
  • Page 54 Malfunction or Failure cause and Corrective 13.4 Error codes Error code protection action When a safety device is activated, an error code will be displayed 1.The T5 sensor connector is on the user interface. loosen. Reconnect it. 2.The T5 sensor connector is A list of all errors and corrective actions can be found in the table The domestic hot wet or there is water in.
  • Page 55 Malfunction or Failure cause and Correctiv Malfunction or Failure cause and Corrective Error code Error code protection action protection action 1. The Ta senor is in the is loosen. Re connect it. The indoor interface; 2. The Ta sensor failure ， temperature wet or there is water in.
  • Page 56 Malfunction or Failure cause and Corrective Error code protection action 1. The EEprom parameter is error, rewrite the EEprom data. The main control 2. EEprom chip part is board PCB B broken, change a new EEprom failure EEprom chip part. 3.

  • Page 57: Technical Specifications

    14 TECHNICAL SPECIFICATIONS 14.1 General Nominal capacity Dimensions H x W x D Weight Net weight Gross weight water inlet/outlet Water drain Expansion vessel volume Maximum working pressure (MWP) Type Pressure relief valve water circuit 1-phase 3-phase 5\7\9\10\12\14\16 12\14\16 Standard unit (power supply via unit) •...
  • Page 58 Product fiche 1 MHC- MHC- MHC- MHC- MHC- MHC- MHC- MHC- MHC- Heat pump space heater unit V7W/D2 V9W/D2 V10W/D2 V12W/D2 V14W/D2 V16W/D2 V12W/D2 V14W/D2 V16W/D2 Indoor unit sound power (*) [dB(A)] Outdoor unit sound power (*) [dB(A)] Capacity of the back-up heater Psup back-up heater [kW]...
  • Page 59 Product fiche 2 MHC- MHC- MHC- MHC- MHC- MHC- MHC- MHC- MHC- MHC- Heat pump space heater unit V5W/D2 V7W/D2 V9W/D2 V10W/D2 V12W/D2 V14W/D2 V16W/D2 V12W/D2 V14W/D2 V16W/D2 Tol (temperature [°C] operating limit) Pdh (declared heating 10.7 11.8 11.6 10.9 10.8 11.0 [kW]...
  • Page 61 1.66 0.90 2.12 0.90 3.01 0.90 3.91 0.90 5.84 0.90 1.37 1.66...
  • Page 63 Product fiche 6 MHC- MHC- MHC- MHC- MHC- MHC- MHC- MHC- MHC- MHC- Heat pump space heater unit V5W/D2 V7W/D2 V9W/D2 V10W/D2 V12W/D2 V14W/D2 V16W/D2 V12W/D2 V14W/D2 V16W/D2 Tblv [°C] (F) Tbivalent Pdh (declared heating [kW] temperature capacity) COPd (declared 3.29 3.45 3.62...
  • Page 65 Model(s): Air-to-water heat pump: Water-to-water heat pump: Brine-to-water heat pump: Low-temperature heat pump: Equipped with a supplementary heater: Heat pump combination heater: Parameters shall be declared for medium-temperature application, except for low-temperature heat pumps. For low-temperature heat pumps, parameters shall be declared for low-temperature application Parameters shall be declared for average, colder and warmer climate conditions...
  • Page 94 Outlet water MHC-V5W/D2N1 MHC-V7W/D2N1 MHC-V9W/D2N1 MHC-V10W/D2N1 temperature/℃ Pdesign/kW 5.90 5.74 5.69 6.22 SEER 4.61 4.75 4.52 5.24 Outlet water MHC-V12W/D2N1 MHC-V12W/D2RN1 MHC-V14W/D2N1 MHC-V16W/D2N1 temperature/℃ Pdesign/kW 12.5 13.0 5.78 6.64 6.18 5.88 SEER 5.02 5.34 4.86 4.34 Outlet water MHC-V14W/D2RN1 MHC-V16W/D2RN1 temperature/℃...
  • Page 96 14.3 Important information for the used refrigerant This product has the fluorinated gas it is forbidden to release to air. Refrigerant type: R410A; Volume of GWP: 2088; GWP=Global Warming Potential Factory charge Model Refrigerant/kg tonnes CO equivalent 2.40 5.01 2.40 5.01 2.40 5.01...

This manual is also suitable for:

Mhc-v7w/d2n1Mhc-v5w/d2n1Mhc-v10w/d2n1Mhc-v16w/d2n1Mhc-v14w/d2n1Mhc-v12w/d2rn1 ... Show all

Table of Contents