Midea D10-20VD User manual

The diagram above is just for reference. Please take the
appearance of the actual product as the standard.
Midea Storage Electric Water Heater
Instruction Manual
Model: D10-20VD
Thank you very much for purchasing our water heater.
Before installing and operating your water heater, please
read this manual carefully and keep it for future reference.

1
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)
3.Unit installation .................................................................................................................(5)
4.Methods of using ..............................................................................................................(7)
5.Maintenance.....................................................................................................................(8)
6.Troubleshooting................................................................................................................(9)
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General Remark

2
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
1. 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℃, 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.

3
2. PRODUCT INTRODUCTION
2.1 Nomenclature
D -
NOTE
This manual is applicable to the storage electric water heaters (D *-***) manufactured by
this company.
is the product code of the storage electric water heater;
is the capacity (L);
represents the rated power (*100W);
represents the pattern code (eg : A,B,C...);
represents the extension of pattern (eg : 1,2,3...);
①
①
②
②
③
③
④
④
⑤
⑤
2.2 Technical Performance Parameters
(Fig.1)
Hot water Cold water
Pressure relief valve
Thread screw
Drain handle
Pressure release hole
D10-20VD
Rated
Voltage
(ACV)
220-240
Model
IPX4
65
2000
Rated
Power
(W)
10
Volume
(L)
0.75
Rated
Pressure
(MPa)
Rated
Thermostat
SET(°C)
Protection
Class
Waterproof
Grade
I

4
2.3 Brief introduction of product structure
2.4 Internal Wire Diagram
WIRING DIAGRAM
E
N
L
QQ
Heating Element Heating Indicator light
Thermal
Cut Out
Thermostat
Power
Indicator
Brown
Blue
Yellow/Green
(Note:All dimensions are in mm)
D10-20VD
A
B
C
D
315
315
282
66
C
A
B
D

3.2 Pipelines Connection
3.1 Installation Instruction
①
②
③
3. UNIT INSTALLATION
5
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.
Incase of hollow bricks wall, ensure to fill it with cement concrete completely.
After selecting a proper location, install the mounting bracket to a solid wall.
Methods of installation: Follow the installation as show in Fig.3. Use the anchors and fasteners
provided along with the product for securing the bracket(Fig.2) firmly in the wall.
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.
①
②
③
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.
Connection of pressure relief valve with the heater on the inlet of the water heater.
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).
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.
④
Install the supply socket in the wall. The supply socket be 220V~240V. 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). If there is fault on power cable, it should be replaced by the manufacturers, agencies
or qualified person who is able to do this so as to ensure the safety.
(Fig.2) (Fig.3)
(Fig.4)
N (Blue)
L (Brown) E (Yellow/Green)
⑤
Ground
≥1.8m
100
36
20
66
2-Φ8.5
2.2

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.
If the users want to realize a multi-way supply system, refer to the method shown in fig.6 for
connection of the pipelines.
④
6
(Fig.5)
(Fig.6)
Pressure relief valve
Water inlet valve
Water inlet valve
Running water pipe
Mixing valve
Water pool
Triple joint Shower nozzle
Hot water outlet Cold water inlet
Pressure relief valve
Pressure release hole
Joint screw for cold water inlet
Adjusting handle for
mixing valve
Hot water
Hot water
outlet Cold water
inlet
Rubber seal gaskets
Rubber seal gaskets
Power supply cord

7
(Fig.7)
4. METHODS OF USING
NOTE
During normal operation, the inlet valve shall be always kept open.
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.
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.
●
①
②
Rotate the knob according to the marking on the knob to increase or decrease the setting
temperature.
The “White (up)” LED and “White (down)” LED remain ON while there is power to the system. The
green LED will turns off when the water temperature reaches the user setting, at the end of the
heating phase.
1

8
Manual reset button
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℃),
it is nessary 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.
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5. MAINTENANCE
WARNING
Do cut off power supply before maintenance, to avoid danger like electric shock.
!
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.
!
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:
1. De-energize the water heater, remove the plate of the side/lower cover.
2. Press the button, located at the center of the thermal switch, see Fig.8;
3. 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.
(Fig.8)

9
6. TROUBLESHOOTING
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.
Failures Reasons Treatment
The heating indicator
light is off.
Failures of the temperature
controller.
Contact with the professional
personnel for repair.
Contact with the professional
personnel for repair.
No water coming out
of the hot water outlet.
The water temperature
is too high.
Water leak.
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.
Failures of the temperature
control system.
Seal problem of the joint of
each pipe. Seal up the joints.

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