D30-15VDU - Water heater MIDEA - Free user manual and instructions

Product Type	Storage Electric Water Heater
Brand	Midea
Model	D30-15VDU
Capacity	30 L
Rated Power	1500 W
Rated Voltage	220-240 V ~
Rated Pressure	0.8 MPa
Max Water Temperature	75 °C
Thermostat Set Temperature	75 °C
Protection Class	I
Waterproof Grade	IPX4
Dimensions (A x B x C x D)	440 mm x 440 mm x 388 mm x 66 mm
Weight (Empty)	Approx. 15 kg
Inner Tank Material	Steel with enamel coating (typical)
Heating Element Type	Electric immersion
Safety Features	Thermal cut-out, pressure relief valve, magnesium anode
Controls	Rotary knob for temperature adjustment
Indicators	Power LED (white), Heating LED (white)
Installation Requirements	Wall-mount on solid wall; socket height ≥ 1.8m; earthing required
Inlet/Outlet Connection	G1/2" thread
Energy Efficiency Class	C (for D30-15VDU)
Annual Energy Consumption	558 kWh
Water Heating Efficiency (ηwh)	33%
Mixed Water at 40°C (V40)	18 L (declared), 28 L (measured)

Frequently Asked Questions - D30-15VDU MIDEA

How do I install the Midea D30-15VDU water heater?

Installation must be performed by a qualified professional. Mount the heater on a solid wall capable of bearing more than two times the total weight when full. Use the supplied bracket and anchors. The supply socket must be earthed and installed at least 1.8 m above the ground. Connect the pressure relief valve to the cold water inlet.

How do I use the water heater for the first time?

Open an outlet valve, then open the inlet valve to fill the tank. When water flows from the outlet, the tank is full. Close the outlet valve. Then plug in and switch on. The power indicator will light up. Adjust the temperature using the rotary knob. The heating indicator will be on during heating and off when set temperature is reached.

What is the maximum water temperature and can I adjust it?

The water can heat up to 75°C. You can adjust the temperature by rotating the knob on the thermostat. Turn clockwise to increase and counterclockwise to decrease. The default set temperature is 75°C.

How do I drain the water heater for maintenance or frost protection?

To drain, first disconnect power and close the inlet valve. Open an outlet valve to release pressure. Then lift the handle on the pressure relief valve to drain water. Ensure the drainage pipe slopes downward and is frost-free. Drain completely if the temperature drops below 0°C to prevent freezing damage.

Why is water dripping from the pressure relief valve?

A small amount of dripping during heating is normal due to thermal expansion. However, if there is a large leak, contact customer service. The pressure relief valve should never be blocked. Check and clean it regularly to ensure it is not blocked.

How do I reset the thermal cut-out if the water heater stops heating?

If the heater is connected but not heating and the indicator is off, the thermal cut-out may have tripped. De-energize the unit, remove the side/lower cover, and press the red button on the thermal switch. If it doesn't click, wait for it to cool. Reassemble and restore power. If persistent, call a professional.

What maintenance does the water heater require?

Regularly check the power plug and socket for overheating and ensure proper earthing. Clean the internal tank and heating element periodically (frequency depends on water hardness). Inspect the magnesium anode and replace if fully decomposed. Contact a service center for tank cleaning and anode replacement.

What are the common troubleshooting steps if no hot water comes out?

Check if the water supply is on, if the inlet valve is open, and if water pressure is sufficient. If the heating indicator is off, the thermostat or thermal cut-out may be faulty. If no water at all, ensure the outlet valve is open and the tank is filled. For persistent issues, contact a professional.

Is the Midea D30-15VDU energy efficient?

The model has a water heating energy efficiency of 33% and an annual energy consumption of 558 kWh, corresponding to energy efficiency class C according to EU regulations. It is designed for household use with a declared load profile of 'S'.

Can I use an extension cord with this water heater?

No, extension boards or extension cords are strictly prohibited. The heater draws up to 1500 W and requires a dedicated socket rated at least 16 A with proper earthing. Using an extension cord can cause overheating and fire risk.

USER MANUAL D30-15VDU MIDEA

Technical line drawing of a Midea water heater with no text or symbols

Technical line drawing of a Midea water heater with mounting base (no text or symbols)

The diagram above is just for reference. Please take the appearance of the actual product as the standard.

General Remark

• The installation and maintenance has to be carried out by qualified professionals or Midea authorized technicians.
• The manufacturer shall not be held responsible for any damage or malfunction caused by wrong installation or failing to comply with following instructions included in this pamphlet.
• For more detailed installation and maintenance guidelines, please refer to below chapters.

TABLE OF CONTENTS

TITLE PAGE

1. Cautions ......(2)
   2.Product introduction ....(3)
2. Unit installation ....(5)
   4.Methods of using....(7)
3. Maintenance....(8)
4. Troubleshooting....(9)
   7.PRODUCE INFORMATION WITH EU REGULATION ..... (10)

1. CAUTIONS

Before installing this water heater, check and confirm that the earthing on the supply socket is reliably grounded. Otherwise, the electrical water heater can not be installed and used. Do not use extension boards. Incorrect installation and use of this electrical water heater may result in serious injuries and loss of property.

Special Cautions

- The water heater is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instructions concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the heater.

- The wall in which the electrical water heater is installed must be able to bear the load more than two times of the heater filled fully with water without distortion and cracks. Otherwise, other strengthening measures must be adopted.

- The supply socket must be earthed reliably. The installation height of the supply socket must not be lower than 1.8m. The rated current of the socket must not be lower than 16A. The socket and plug must be kept dry to prevent electrical leakage. If the flexible power supply cord is damaged, the special supply cord provided by the manufacturer must be selected, and replaced by the professional maintenance personnel.

- The maximum inlet water pressure is 0.5MPa; the minimum inlet water pressure is 0.1MPa, if this is necessary for the correct operation of the appliance.

- When using the heater for the first time (or the first use after maintenance), the heater can not be switched on until it has been filled fully with water. When filling the water, at least one of the outlet valves at the outlet of the heater must be opened to exhaust the air. This valve can be closed after the heater has been filled fully with water.

- The pressure relief valve attached with the heater must be installed at the cold water inlet of this heater, and make sure it is not exposed in the foggy. The water may be outflowed from pressure relief valve, so the outflow pipe must open wide in the air. In order to drain away the water inside the inner container, it can be drained away from the pressure release valve. Twist the thread screw of the pressure release valve off, and lift the drain handle upwards(See Fig.1). The drainage pipe connected to the pressure release hole must be kept sloping downwards and in a frost-free environment. The water may drip from the discharge pipe of the pressure-relief device and that this pipe must be left open to the atmosphere.

- During heating, there may be drops of water dripping from the pressure release hole of the pressure relief valve, this is a normal phenomenon. The pressure release hole shall not be blocked under no circumstances, otherwise, the heater may get damaged, even resulting in accidents. If there is a large amount of water leak, please contact customer care center for repair.

- The pressure relief valve need to be checked and cleaned regularly, so as to make sure it will not be blocked.

- Since the water temperature inside the heater can reach up to 75°C, the hot water must not be exposed to human bodies when it is initially used. Adjust the water temperature to a suitable temperature to avoid scalding.

- If any parts and components of this electrical water heater are damaged please contact customer care center for repair.

2. PRODUCT INTRODUCTION

2.1 Nomenclature

① is the product code of the storage electric water heater;
② is the capacity (L);
③ represents the rated power (*100W);
④ represents the pattern code (eg : A,B,C...);
⑤ represents the extension of pattern (eg : 1,2,3...);

NOTE

This manual is applicable to the storage electric water heaters (D *-***) manufactured by this company.

2.2 Technical Performance Parameters

Model	Volume (L)	Rated Power (W)	Rated Voltage (ACV)	Rated Pressure (MPa)	Rated Of Water Temperature (°C)	Rated Thermostat SET(°C)	Protection Class	Waterproof Grade
D10-15VDO	10	1500	220-240	0.8	75	75	I	IPX4
D10-15VDU	10	1500	220-240	0.8	75	75	I	IPX4
D15-15VDO	15	1500	220-240	0.8	75	75	I	IPX4
D15-15VDU	15	1500	220-240	0.8	75	75	I	IPX4
D30-15VDO	30	1500	220-240	0.8	75	75	I	IPX4
D30-15VDU	30	1500	220-240	0.8	75	75	I	IPX4

2.3 Brief introduction of product structure

Technical diagram of a mechanical or electrical component with four internal slots and mounting holes (no text or symbols)

	D10-15VD D15-15VD		D30-15VD
A	324	368	440
B	324	368	440
C	282	312	388
D	66	66	66

(Note: All dimensions are in mm)

2.4 Internal Wire Diagram

graph TD
    A["Thermal Cut Out"] --> B["Q"]
    C["Thermostat"] --> D["Q"]
    E["Power Indicator"] --> F["Yellow/Green"]
    G["Heating Element"] --> H["Light"]
    I["Heating Indicator light"] --> J["Light"]
    K["L"] --> L["Brown"]
    M["N"] --> N["Blue"]
    O["E"] --> P["Yellow/Green"]

3. UNIT INSTALLATION

3.1 Installation Instruction

① This electrical water heater shall be installed on a solid wall. If the strength of the wall cannot bear the load equal to two times of the total weight of the heater filled fully with water, it is then necessary to install a special support.
In case of hollow bricks wall, ensure to fill it with cement concrete completely.
② After selecting a proper location, install the mounting bracket to a solid wall.
Methods of installation: Follow the installation as shown in Fig.3. Use the anchors and fasteners provided along with the product for securing the bracket(Fig.2) firmly in the wall.
③ Align the slots on the back of the water heater with the projections on the bracket and mount the water heater on the bracket. Thereafter slide the water heater gently towards the bottom side on lock the water heater.

Technical diagram showing a mechanical assembly with dimension标注 (2.2) and hatched background, no readable text or symbols.

④ Install the supply socket in the wall. The requirements for the socket are as follows: 250V/10A, single phase, three electrodes. It is recommended to placed the socket on the right above the heater. The height of the socket to the ground shall not be less than 1.8m (see Fig.4).

(Fig.4)

⑤ If the bathroom is too small, the heater can be installed at another place. However, in order to reduce the pipeline heat losses, the installation position of the heater shall be closed to the location shall be as near as possible to the heater.

3.2 Pipelines Connection

① The dimension of each pipe part is G1/2"; The massive pressure of inlet should use Pa as the unit; The minimum pressure of inlet should use Pa as the unit.
② Connection of pressure relief valve with the heater on the inlet of the water heater.
③ In order to avoid leakage when connecting the pipelines, the rubber seal gaskets provided with the heater must be added at the end of the threads to ensure leak proof joints (see Fig.5).

(Fig.5)

④ If the users want to realize a multi-way supply system, refer to the method shown in fig.6 for connection of the pipelines.

(Fig.6)

NOTE

Please be sure to use the accessories provided by our company to install this electric water heater. This electric water heater can not be hung on the support until it has been confirmed to be firm and reliable. Otherwise, the electric water heater may drop off from the wall, resulting in damage of the heater, even serious accidents of injury. When determining the locations of the bolt holes, it shall be ensured that there is a clearance not less than 0.2m on the right side of the electric heater, to convenient the maintenance of the heater, if necessary.

4. METHODS OF USING

- First, open any one of the outlet valves at the outlet of the water heater, then, open the inlet valve. The water heater gets filled with water. When water flows out of the outlet pipe it implies that the heater has been filled fully with water, and the outlet valve can be closed.

NOTE

During normal operation, the inlet valve shall be always kept open.

• Insert the supply plug into the socket.
• If the indicator lights up, the thermostat will automatically control the temperature. When the water temperature inside the heater has reached the set temperature, it will switch off automatically, when the water temperature falls below the set point the heater will be turned on automatically to restore the heating.

(Fig.7)

① Rotate the knob according to the marking on the knob to increase or decrease the setting temperature.
② The White (up) LED is the power light. The White (down) LED is the heating light. The power light remains ON when machine is connected to power. The heating light will be ON once the knob is rotated to adjust the temperature and will be OFF when the heating process is finished.

5. MAINTENANCE

WARNING

Do cut off power supply before maintenance, to avoid danger like electric shock.

• Check the power plug and outlet as often as possible. Secure electrical contact and also proper grounding must be provided. The plug and outlet must not heat excessively.
• If the heater is not used for a long time, especially in regions with low air temperature(below 0 °C), it is necessary to drain water from the heater to prevent damage of the water heater, due to water freezing in the internal tank.(Refer Cautions in this manual for the method to drain away the water from the inner container).
• To ensure long reliable water heater operation, it is recommended to regularly clean the internal tank and remove deposits on the electric heating element of the water heater, as well as check condition (fully decomposed or not) of the magnesium anode and, if necessary, replace it with a new one in case of full decomposition. Tank cleaning frequency depends on hardness of water located in this territory. Cleaning must be performed by special maintenance services. You can ask the seller for address of the nearest service center.

• The water heater is equipped with a thermal switch, which cuts off power supply of the heating element upon water overheating or its absence in the water heater. If the water heater is connected to the mains, but water is not heated and the indicator doesn't light up, then the thermal switch was switched off or not switched on. To reset the water heater to the operating condition, it is necessary to:

• De-energize the water heater, remove the plate of the side/lower cover.

• Press the button, located at the center of the thermal switch, see Fig.8;
• If the button is not pressed and there is no clicking, then you should wait until the thermal switch cools down to the initial temperature.

Manual reset button

Pure technical line drawing of a mechanical component with mounting flanges and a central hub (no text or symbols)

(Fig.8)

WARNING

Non-professionals are not allowed to disassemble the thermal switch to reset. Please contact professionals to maintain. Otherwise our company will not take responsibility if any quality accident happens because of this.

6. TROUBLESHOOTING

Failures Reasons Treatment
The heating indicator light is off.	Failures of the temperature controller.	Contact with the professional personnel for repair.
No water coming out of the hot water outlet.	1. The running water supply is cut off.2. The hydraulic pressure is too low.3. The inlet valve of running water is not open.	1. Wait for restoration of running water supply.2. Use the heater again when the hydraulic pressure is increased.3. Open the inlet valve of running water.
The water temperature is too high.	Failures of the temperature control system.	Contact with the professional personnel for repair.
Water leak.	Seal problem of the joint of each pipe.	Seal up the joints.

NOTE

Parts illustrated in this use and care manual are indicative only, parts provided with the product may differ with illustrations. This product is intended for household use only. Specifications are subject to change without notice.

7. PRODUCE INFORMATION WITH EU REGULATION

The electrical storage water heater D10-15VDO of the company Midea was tested with a declared load profile of the size "XXS"

The product fulfills and corresponds to the requirements of the commission regulation standards (No 814/2013) for electrical storage water heater and achieved a water heating energy efficiency of

$$ \eta_ {\mathrm{wh}} = 36 \% $$

that correspond to the water heating efficiency class"

In accordance with Annex II Energy Efficiency Classeside 1 of the commission regulation (No 812/2013)

The evaluation of the result of this report with respect of conformity with the related commission regulation (No 812/2013 and 814/2019) is only a part of the conformity assessment to achieve the ErP-Label.

Electricity consumption, water heating energy efficiency _wh and mixed water at 40^ (V40)

Description Parameter Value Unit
k-Value	k	0.23
Smart control compliance	smart	0
Smart control factor	SCF	0
Conversion coefficient	CC	2.5
Ambient correction term Q	cor	-0.173	kWh
Referenct energy	Q_ref	2.1	kWh
Useful energy content	Q_H2O	2.131	kWh
Correction ratio of reference and useful energy	Q_ref/Q_H2O	0.985	kWh
Daily electricity consumption (measured)	Q_test\_elec	2.469	kWh
Water temperature at the beginning of the 24h measurement cycle	T3	48.7	°C
Water temperature at the end of the 24h measurement cycle	T5	51.4	°C
Storage volume	M_act	10.3	kg
Storage volume	C_act	10.3	L
Daily electricity consumption (corrected)	Q_elec	2.401	kWh
Water heating energy efficiency	n_wh	36.0
Annual Electricity Consumption	AEC	512	kWh
Water heating energy efficiency class		A
Water temperature without tapping	T_set	48	°C
Average water temperature of outlet warm water	θ'_p	46.4	°C
Average water temperature of inlet cold water	θ_c	10.4	°C
Normalised value of the average temperature	θ_p	46.4	°C
Volume that delivered water of at least 40°C	V_40exp	8	L
Calculated volume that delivered hot water of at least 40°C	V_40	9	L

The electrical storage water heater D10-15VDU of the company Midea was tested with a declared load profile of the size "XXS"

The product fulfills and corresponds to the requirements of the commission regulation standards (No 814/2013) for electrical storage water heater and achieved a water heating energy efficiency of

$$ \eta_ {\mathrm{wh}} = 32 \% $$

that correspond to the water heating efficiency cl ^B

In accordance with Annex II Energy Efficiency Class 1 of the commission regulation (No 812/2013)

The evaluation of the result of this report with respect of conformity with the related commission regulation (No 812/2013 and 814/2019) is only a part of the conformity assessment to achieve the ErP-Label.

Electricity consumption, water heating energy efficiency _wh and mixed water at 40^ (V40)

Description Parameter Value Unit
k-Value	k	0.23
Smart control compliance	smart	0
Smart control factor	SCF	0
Conversion coefficient	CC	2.5
Ambient correction term Q	cor	-0.348	kWh
Referenct energy	Q_ref	2.1	kWh
Useful energy content	Q_H2O	2.142	kWh
Correction ratio of reference and useful energy	Q_ref/Q_H2O	0.980	kWh
Daily electricity consumption (measured)	Q_test\_elec	2.805	kWh
Water temperature at the beginning of the 24h measurement cycle	T3	60.7	°C
Water temperature at the end of the 24h measurement cycle	T5	62.0	°C
Storage volume	M_act	9.8	kg
Storage volume	C_act	9.8	L
Daily electricity consumption (corrected)	Q_elec	2.735	kWh
Water heating energy efficiency	_wh	32.44
Annual Electricity Consumption	AEC	569	kWh
Water heating energy efficiency class		B
Water temperature without tapping	T_set	61.8	°C
Average water temperature of outlet warm water	'_p	60.2	°C
Average water temperature of inlet cold water	_c	10.3	°C
Normalised value of the average temperature	_p	60.2	°C
Volume that delivered water of at least 40°C	V_40exp	10	L
Calculated volume that delivered hot water of at least 40°C	V_40	17	L

The electrical storage water heater D15-15VDO / D15-15VDU of the company Midea was tested with a declared load profile of the size“XXS”

The product fulfills and corresponds to the requirements of the commission regulation standards (No 814/2013) for electrical storage water heater and achieved a water heating energy efficiency of

$$ \eta_ {\mathrm{wh}} = 35 \% $$

that correspond to the water heating efficiency class

In accordance with Annex II Energy Efficiency Classet 1 of the commission regulation (No 812/2013)

The evaluation of the result of this report with respect of conformity with the related commissio regulation (No 812/2013 and 814/2019) is only a part of the conformity assessment to achieve the ErP-Label.

Electricity consumption, water heating energy efficiency _wh and mixed water at 40^ (V40)

Description Parameter Value Unit
k-Value	k	0.23
Smart control compliance	smart	0
Smart control factor	SCF	0
Conversion coefficient	CC	2.5
Ambient correction term Q	cor	-0.208	kWh
Referenct energy	Q_ref	2.1	kWh
Useful energy content	Q_H_2O	2.134	kWh
Correction ratio of reference and useful energy	Q_ref/Q_H_2O	0.984	kWh
Daily electricity consumption (measured)	Q_est\_elec	2.478	kWh
Water temperature at the beginning of the 24h measurement cycle	T3	49.6	°C
Water temperature at the end of the 24h measurement cycle	T5	48.3	°C
Storage volume	M_act	15.6	kg
Storage volume	C_act	15.6	L
Daily electricity consumption (corrected)	Q_elec	2.462	kWh
Water heating energy efficiency	n_wh	35.3
Annual Electricity Consumption	AEC	522	kWh
Water heating energy efficiency class		A
Water temperature without tapping	T_set	50	°C
Average water temperature of outlet warm water	θ_p'	49.2	°C
Average water temperature of inlet cold water	θ_c	10.6	°C
Normalised value of the average temperature	θ_p	49.2	°C
Volume that delivered water of at least 40°C	V_40exp	12	L
Calculated volume that delivered hot water of at least 40°C	V_40	16	L

The electrical storage water heater D30-15VDO / D30-15VDU of the company Midea was tested with a declared load profile of the sizeS"

The product fulfills and corresponds to the requirements of the commission regulation standards (No 814/2013) for electrical storage water heater and achieved a water heating energy efficiency of

$$ \eta_ {\mathrm{wh}} = 33 \% $$

that correspond to the water heating efficiency class

In accordance with Annex Energy Efficiency Classes article 1 of the commission regulation (No 812/2013)

The evaluation of the result of this report with respect of conformity with the related commissio regulation (No 812/2013 and 814/2019) is only a part of the conformity assessment to achieve the ErP-Label.

Electricity consumption, water heating energy efficiency _wh and mixed water at 40^ (V40)

Description Parameter Value Unit
k-Value	k	0.23
Smart control compliance	smart	0
Smart control factor	SCF	0
Conversion coefficient	CC	2.5
Ambient correction term Q	cor	-0.330	kWh
Referenct energy	Q_ref	2.1	kWh
Useful energy content	Q_H2O	2.137	kWh
Correction ratio of reference and useful energy	Q_ref/Q_H2O	0.983	kWh
Daily electricity consumption (measured)	Q_est\_elec	2.654	kWh
Water temperature at the beginning of the 24h measurement cycle	T3	58.3	°C
Water temperature at the end of the 24h measurement cycle	T5	56.3	°C
Storage volume	M_act	29.7	kg
Storage volume	C_act	29.7	L
Daily electricity consumption (corrected)	Q_elec	2.674	kWh
Water heating energy efficiency	n_wh	33.0
Annual Electricity Consumption	AEC	558	kWh
Water heating energy efficiency class		C
Water temperature without tapping	T_set	58	°C
Average water temperature of outlet warm water	θ_p'	57.5	°C
Average water temperature of inlet cold water	θ_c	10.4	°C
Normalised value of the average temperature	θ_p	57.5	°C
Volume that delivered water of at least 40°C	V_40exp	18	L
Calculated volume that delivered hot water of at least 40°C	V_40	28	L

The product is subject to change without notice. Please keep this manual properly.

Wuhu Midea Kitchen & Bath Appliances Mfg. Co., Ltd.

Address: East Road Wanchun, East Area Economic & Technological Development Area, Wuhu City, Anhui Province, P.R.C

Web site: www.midea.com/global Postal code: 241000

Midea Italia S.r.l.

A Socio Unico Viale

(MI) www.midea.com/it

Technical line drawing of a Midea water heater component (no text or symbols)

Technical line drawing of a Midea water heater with mounting base (no text or symbols)

Technical line drawing of a mechanical component with four internal slots and mounting holes (no text or symbols)

	D10-15VD D15-15VD		D30-15VD
A	324	368	440
B	324	368	440
C	282	312	388
D	66	66	66

Technical diagram showing a mechanical assembly with a bent rod and hatched background, labeled 'Fig.3' (no text or symbols beyond labels)

(Fig.7)

Pure technical line drawing of a three-pin electrical socket or terminal block (no text or symbols)

(Fig.8)

ATTENZIONE

Wuhu Midea Kitchen & Bath Appliances Mfg. Co., Ltd.

Address: East Road Wanchun, East Area Economic & Technological Development Area, Wuhu City, Anhui Province, P.R.China

Web site: www.midea.com/global Postal code: 241000

Midea Italia S.r.l.

A Socio Unico Viale

(MI) www.midea.com/it