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Installation instruction
Cold water
Hot water
pipe
outlet
Hot water
nozzle
pipe
Safety valve
Installing safety valve
Install the safety valve which has a rated pressure of 0.80MPa (its connection is G1/2) into
the water intake pipe with the arrow on the safety valve pointing at the water heater. When
the water heater is heated by electricity, a small amount of waterwill flow from the safety
valve's pressure relief hole due to the expansion of water in the heater. This is normal. The
pressure-relief hole should be connected to the atmosphere and
free from blockage at all times.
Installation method for safety valve's drainage pipe: Attach an end
of the water drainage pipe onto the pressure relief hole on the
safety valve. You may cut the water drainage pipe to make it
shorter, or extend it depending on the situation. Connect to the
other end of the water drainage pipe to the lower water outlet.
This will prevent the water from the pressure relief hole from
splashing. The water drainage pipe connected to the safety valve
should be installed in a slanted manner and in an environment
which is not prone to frost.
Note: If your water heater is not installed in a bathroom with sewer, our recommendation
would be that you add safety valve water drainage pipe.
Installation Precautions
When installing the water heater, certain space should be reserved (not less than 250mm
from the top and bottom, and not less than 700mm from the front and the sides) for ease
of subsequent maintenance and repair. If the water heater was to be built into clip boards,
the bottom section of the clip board should be movable for ease of removal of plastic cover
during maintenance.
Make sure the pressure on the water intake is not less than 0.05MPa, and not more than
0.8MPa.
Instruction manual
Operation
After completion of installation, make sure to turn on the water intake valve and mixing
valve since there is no water in the inner chamber. Turn the mixing valve to the maximum
for hot water outlet. Turn off the out-flow valve when water flows out from the sprinkler or
the water outlet (indicating that the container is filled with water). Turn off the water outlet
valve. Inspect all connections to ensure that there is not water leakage before connecting
to power.
1
Adjust the water temperature knob at the
bottom of the water heater to set the
temperature.
• The maximum temperature setting is 75ºC.
Temperature adjustment knob: Turn the knob
gradually clockwise to raise the temeprature
setting. The knob will not continue to turn once
it reaches maximum temperature setting. Turn
it anti-clockwise graudally to reduce the
temperature setting. Once the minimum
temperature setting is reached, the water
heater's power will be cut off if you continue to
turn the water temperature knob.
• If the heating indicator light is lit, it means that the water heater is heating.
• If the heating indicator light is off it means that heating is complete and that the water
heating is on standby.
• Power will be automatically cut off when the water temperature reaches the set temperature.
Once it lowers to certain temperature power will be automatically connected.
• When the water pressure is ≥0.8MPa and the pressure-relief hole on the safety valve emits
large volume of water, it means that the water pressure is excessive. In such case, please
notify the After-sales Department.
Things to note during use
1 Do not connect the power before filling the inner chamber with water in order to prevent
damage to the water heater.
2 Adjust the water temperature to the suitable level before use in order to prevent
scalding.
3 As long as the hot water is adequate, set a lower temperature to reduce heat loss, high
temperature corrosion and scaling, thus extending the water heater's lifespan.
4 Do not place inflammable substances such as petrol near the water heater; otherwise it
may cause fire.
Direction of cold water
Direction of hot water
Cold water inlet
Safety valve
Mini handle
Pressure-relief hole
(connected to water
drainage pipe)
3
OFF
MAX
Water temperature indicator
Heating indicator
light
5
Installation Precautions
The water heater should be installed indoors in a place where the ambient temperature is
above 0ºC. The pipes should be closely laid out. The hot water outlet should be too far
away from the point of usage. If the distance exceeds 8 meters, the hot water pipe should
have insulation protection, in order to prevent heat loss.
The wall on which the water heater should be strong such as it is able to withstand twice
the weight of the water heater when filled with water. If the wall was not weight-bearing
wall or made of hollow bricks, adequate protective measures such as addition of support
and high-strength wall screw with back panel should be adopted.
The water heater should be installed in places such as it is easy to use and maintain and
with floor drain. In order that it will not cause damage to nearby facilities or those in the
lower levels during a leakage of the water tank or water pipe. It should not be installed
over toilet bowls, bathtub, wash basin or door frame in order that users do not feel
oppressed or insecure.
Power socket for the water heater should be installed in dry places which do not easily
come into contact with water, in order not to affect the heater's normal operation (it would
be best equipped with protective cover).
Do not reverse the installation for the water intake and outlet. The safety valve should be
installed in the designated position and not moved without permission. The safety valve's
pressure-relief hole should be connected to the atmosphere and free from blockage at all
times.
Use pen multimeter to check whether the live line and zero line are reverse. Turn on power
supply only when you have ensured that the heater is filled with water and that there is no
water leakage. The power supply should also conform with requirements.
Safety reminder: In order to prevent accidents, pleae use our company's accessories during
installation. Do not replace them on your own or use substitutes. Please make sure to contact
our Maintenance Department if the pipes or accessories are damaged and replace them with
the accessories supplied by our company. Our company shall not be liaible for any direct or
indirect losses caused as a result of accidents for failure to comply with the aforesaid.
All water pipes should be installed by qualified water pipe installation workers. The pipelines
should comply with the national standards and regulations on the prohibition of prevention
tools to draw water to water source pipelines by way of inverse siphon, as well as local
building codes.
Installation method
Must be installed by personnel in our company's After-sales Department or designated
installation personnel.
The water heater is wall-mounted type.
Determine the installation position of the water heater.
Based on the measurements indicated in the technical
data form, use impact drill to drill four holes of 12mm in
diameter and 65mm in depth. Insert the expandable
hooks into the said holes and ensure that they are
securely fixed. Lift the water heater and slip its wall hook
onto the expandable hooks. For accessories such as
safety valve, please refer to the "Installation of Safety Valve" (for reference only). Make
sure to seal the joints with Teflon tapes to prevent water leakage.
For ease of installation and removal of water heater, we would recommend that G1/2 loose
joints be installed at appropriate locations on the water inlet and outlet pipes of the water
heater. Determine the position of the hot water supply. Connect the water intake and outlet
pipe together with the water pipe to the positions reserved for use of hot water. Hot water
pipe should preferably not be too long in order to prevent heat loss.
Note:Make sure that the wate heater is securely attached to the hook before letting it go;
otherwise it may drop and cause injury or property damage.
Cleaning and Maintenance·Packing List
Cleaning and Maintenance
Warning!
The water heater must be repaired or maintained by qualified professionals. Improper methods
may cause serious injury or damage to property.
Cleaning
■
External cleaning
• Power must be switched off before cleaning the water heater.
• Take a wet cloth and dab it with small quantity of neutral detergent. Lightly wipe the water
heater. Do not use petrol or other solvents. Finally use a dry cloth to wipe; make use to dry
the water heater thoroughly. Make sure not to use detergents containing abrasive agents
(e.g. toothpaste); acidic substances; chemical solvents (e.g. alcohol) or polish to clean the
water heater.
■
Internal cleaning
In order to ensure that the water heater will work with high efficiency, clean the heating tube
and inner chamber once every three years. Take care not to damage the exterior of the
heating pipe and the protective layer on the surface of the inner chamber. Depending on the
local water quality and usage habit, the magnesium rod should be regularly replaced. If
maintenance is required, please contact the local Maintenance Department.
Check
• When the water heater is in use, the safety valve should be checked once every month.
To check it, turn the safety valve's small handle on the side of the water intake (take care
not to hurt your hand). If there is water flowing out, the safety valve is working normally.
Please contact the local After-sales Department if no water flows out. In the event of
damage to the safety valve, please replace it with a safety valve of similar specifications.
• Regularly engage service personnel to carry out safety inspection and promptly clear the
water heating pipes of the scale. Check also the consumption of the magnesium rod;
change it if consumption becomes excessive.thpaste); acidic substances; chemical solvents
(e.g. alcohol) or polish to clean the water heater.
Not in use for an extended period of time
If the water heater is not used for an extended period of time, please carry out the following
steps:
1 Turn off the water pipe valve.
2 Screw the water drainage pipe to the safety valve's pressure-relief hole; turn on the safety
valve handle.
3 Turn the hot water valve to the maximum (at the same time unscrew the soft sprinkler pipe
from the water outlet valve; take care not be scalded by hot water), drain the inner chamber
of water.
When the water heater needs to be used again, our recommendation is to open hot water valve
before switching on the power in order to prevent accidents. Allow any gas that may be trapped
in the pipe to be discharged. Do not smoke or allow other exposed fire to be near the opened
valve. At the same time, make sure to carefully examine all the parts of the water heater and
ensure that they are in a perfect condition. Make sure to fill the inner chamber with water before
use.
Packing list
Name of parts
Electric water
Safety valve
Quantity
heater
drainage pipe
(Unit)
(Set)
Product Model No.
ES50V-G1(H)
ES70V-G1(H)
1
ES100V-G1(H)
Expandable
Wall-mount support
hook
4
Expandable
Expandable
Instruction
screw
Hook
Manual
(pc.)
(pc.)
(unit)
1
2
2
1
6
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