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First determine the installation position of the water heater based on your needs. Use PP-Rpipe 

recommended for installation. It should be such that maintenance, repair and dismantling of 

the water heater is convenient. Furthermore install loose joint at suitable locations for the water

intake and outlet.

Use impact drill to drill two 65mm-holes with a diameter of 12mm each at the locations based on 

the installation requirements. Insert the expandable hooks into the holes and ensure that they are 

properly fixed. Hang the water heater vertically on the expandable hooks and check whether it is 

securely fixed. Install the safety valve and drainage pipes, etc. as indicated in the illustration. Make 

Determine the water supply's position and connect the water outlet and intake to their respective 

positions. Fill the inner chamber with water to check whether there is any water leakage. If so, the 

connections must be re-done and properly carried out.

The water heater is a wall-mounted type; thus it should be securely mounted on the wall so that it 

can withstand 4 times its weight after it is filled with water.

Adequate space should be reserved during installation of water heater for ease of subsequent 

repair and maintenance. When installation care should be taken in order that the water heater is 

of a safe distance from gas pipe. It should be at least half a meter from gas cookers/gas pipe/gas 

meter, etc.
Make sure the pressure on the water intake is not less than 0.05MPa, and not more than 0.75MPa.
The water heater should be installed indoors in a place where the ambient temperature is above 0°C. 

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 metres, the hot water pipe should have insulation protection, in 

order to prevent heat loss.
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.

To ensure safety, the water heater should be connected to independent sockets (do not use 

adapters), with reliable earthing. In addition the power socket must conform to national standards. 

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.

Note: 

Make sure that the water heater is securely attached to the hook before letting it go; 

otherwise it may drop and cause injury or property damage.

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 accessories are damaged and 

replace them with the accessories supplied by our company. Our company shall not 

be liable for any direct or indirect losses caused as a result of accidents for failure to 

comply with the aforesaid.

Installation method

Installation  Precautions

Operation

Cleaning

Check

Not in use for an extended period of time

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 

Inspect all connections to ensure that there is not water leakage before connecting to power.

Warning!

The water heater must be repaired or maintained by qualified professionals. Improper 

methods may cause serious injury or damage to property.

Installation instruction

Must be installed by personnel in our company's After-sales Department 

or designated installation personnel.

The water heater is wall-mounted type.

Install the safety valve which has a rated pressure of 0.8MPa (its connection is G1/2) into the 

water intake pipe with the arrow on the safety valve pointing at the water heater. When the 

pressure relief hole due to the expansion of water in the heater. The pressure-relief hole should 

be connected to the atmosphere and free from blockage at all times.
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 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. Make sure that the connections are not leaking and 

that the power supply conforms with requirements. Test the machine by switching on the 

power.

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.

Connection and use of safety valve

Connect water drainage pipe

Instruction manual

Cleaning and Maintenance

Adjust the water temperature knob at 

the bottom of the water heater to set the 

temperature.

Maximum water temperature setting is 75°C

 

Temperature adjustment knob: Turn the 

knob gradually clockwise to raise the 

temperature setting. The knob will not 

continue to turn once it reaches maximum 

temperature setting. Turn it anti-clockwise 

gradually to reduce the temperature setting. 

If the heating indicator light is lit, it means that the water heater is heating.

If the heating indicator is power off, it means that heating is finished and it will enter 

heating insulation state or get closed totally. 

External cleaning

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 Anode rod 

should be regularly replaced. If maintenance is required, please contact the local 

Maintenance Department.

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 

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 Anode rod; 

change it if consumption becomes excessive.

If the water heater is not used for an extended period of time, please carry out the following steps:

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.

When the water temperature reaches the set temperature, it will enter 

thermal state.Once it lowers to certain temperature, power will be 

automatically connected.

Do not connect the power before filling the inner chamber with water in order 

to prevent damage to the water heater.
Adjust the water temperature to the suitable level before use in order to prevent 

scalding.
Insofar as there is adequate hot water, set a lower temperature to reduce heat 

loss, high temperature corrosion and scaling. This will extend the water heater's 

lifespan.

otherwise it may cause fire.

Observe the water drainage of the safety valve's pressure-relief hole.

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.

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To avoid danger caused by accidental resetting of the heating breaker, the 

power for the heat cannot be supplied by timer and other external switch 

devices or connected to circuit with frequent switching for facility use.  

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Things to note during use

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120mm

Expandable hook

Ø12mm, Deep 65mm

Caution

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Screw the water drainage pipe to the safety valve's pressure-relief hole; turn on the safety 

valve handle.

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.

Nozzle

Hot water 

pipe

Hot water outlet

Cold water pipe

Direction of cold water
Direction of hot water

Safety valve

Cold water inlet

MAX

OFF

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