Corbero CTWD30DT Electric Water Heater User Manual

Corbero CTWD30DT Electric Water Heater

Product Information
The CTWD series electric water heater is a versatile and durable appliance suitable for hot water showers and washing in families, enterprises, institutions, service industries, and other places. It is not intended for drinking water.

Features

• Temperature regulation function with flexible adjustment
• The light display shows the current water temperature
• Automatic control of heating and insulation for continuous hot water supply
• Multiple protections including overtemperature protection, water overpressure protection, and anti-hot water backflow
• Durable construction with high-quality heat-resistant stainless steel heating element and electrostatic dry powder enamel liner
• Liner anode protection device prevents rust, corrosion, and scaling
• Thickened polyurethane insulation layer for energy-saving and power-saving operation
• Water mixing valve for simple and flexible water outlet regulation
• Can supply water for multiple water points simultaneously

Product Specification

Rated Capacity (L)| Rated Power| Rated Voltage| Rated Pressure| Maximum Set Temperature
---|---|---|---|---
30| 1800W| 220-240V~50-60Hz| 0.8MPa| 80°C
50| 1800W| 220-240V~50-60Hz| 0.8MPa| 80°C
73| 1800W| 220-240V~50-60Hz| 0.8MPa| 80°C
92| 1800W| 220-240V~50-60Hz| 0.8MPa| 80°C

Product Usage Instructions

1. Before installing the electric water heater, ensure that the grounding of the power socket is reliable. Do not use an extension cable.
2. Improper installation and use may cause serious injury and property damage.
3. The electric water heater should be installed by professional installation personnel in accordance with the national standard of code for the installation of the electric water heater.
4. Installation Preparation:
   • Prepare installation tools and necessary measuring and inspection instruments.
   • Check the condition of the electric water heater and ensure that all attached documents and accessories are complete.
   • Read the operation manual carefully to understand the function and operation method.
5. Installation Operation:
   • Use the attached accessories for the installation and do not replace or omit any parts.
   • Avoid damaging the safety guarantee structure of the building during installation.

Thank you for choosing our product. Please read this manual carefully before installing and using this product.

Special Reminders

Before installing the electric water heater, check and confirm whether the grounding of the power socket is reliable. Otherwise, the electric water heater cannot be installed and used. Do not use extension cables. Improper installation and use of this electric water heater may cause serious injury and property damage.

Features

• Purpose:
• The electric water heater is suitable for hot water showers and washing in families, enterprises and institutions, service industries and other places (not drinkable). Characteristic:
  1. With the temperature regulation function, the temperature can be adjusted flexibly in the range of 40°C ~ 80°C.
  2. The heating indicator light indicates the current working state and the indicator light displays the current water temperature.
  3. Automatic control of heating and insulation ensures a hot water supply at any time.
  4. It has multiple protections such as overtemperature protection, water overpressure protection (automatic pressure relief when the inner tank pressure is too large), anti-hot water backflow and so on. It has obtained national safety certification, and its safety is more guaranteed.
  5. Durable: it adopts a high-quality heat-resistant stainless steel heating element and electrostatic dry powder enamel liner, and is equipped with a liner anode protection device to prevent rust, corrosion and scaling, with long service life.
  6. The insulation layer adopts thickened polyurethane overall foaming, which has good insulation effect, energy saving and power saving.
  7. The water mixing valve is used to regulate the water outlet, which is simple and flexible.
  8. Multi-purpose: it can supply water for multiple water points at the same time.

Product Specification

OVERALL DIMENSIONS

Installation Method

The electric water heater shall be installed by professional installation personnel in accordance with the requirements of the national standard of code for installation of electric water heaters.

1. Installation Preparation

2. Professional installation personnel shall prepare installation tools and necessary measuring qualified inspection instruments.

3. Check whether the electric water heater is in good condition and whether the attached documents and accessories are complete.

4. Carefully read the operation manual to understand the function, operation method, installation requirements and installation method of the electric water heater to be installed.

5. To check the power supply of users, a 230V~/50Hz power supply must be used. The electrical connection of the electric water heater shall generally adopt a special branch circuit, and its capacity shall be greater than 1.5 times the maximum current value of the electric water heater. The position of the separate fixed socket shall be placed in a safe position where there is no danger of electric shock and its water cannot be splashed. The separate fixed socket used by the electric water heater shall be inspected by visual inspection and special measuring devices (phase meter, test pen, grounding resistance meter, etc.)
   to ensure that the live wire and zero wire are installed correctly and grounded reliably. Carefully check whether the capacity of the electric energy meter, wire, and separate fixed socket meet the requirements of the electric water heater. Check the water pressure of tap water with a pressure gauge. If the water pressure is greater than 0.8MPa, a pressure-reducing valve shall be installed on the inlet pipe.

6. Assist users in selecting the installation position of the electric water heater: avoid the place where flammable gas leaks or the environment with strong corrosive gas. Avoid places where strong electric and magnetic fields act directly. Avoid direct sunlight, rain, and wind. Try to avoid places prone to vibration. Try to shorten the length between the electric water heater and the water point to reduce the heat loss of the pipeline. There must be a floor drain with sufficient drainage capacity near the lower part of the installation to avoid failure of drainage. In order to facilitate future repair, maintenance, and relocation, a certain space must be reserved for the installation position of the electric water heater.

7. The bearing capacity of the mounting surface shall not be less than 4 times the total mass of the electric water heater filled with water, otherwise, the user needs to install a support bracket under the electric water heater to ensure safety.

Installation Operation

1. The attached accessories shall be used for the installation of an electric water heater, and professional installation personnel shall not replace, omit or reform at will.

2. During installation, attention shall be paid not to damage the safety guarantee structure of the building.

3. The pipes and fittings installed and connected to users must comply with relevant national standards and be approved or designated by the water heater manufacturer. If a one-way valve is added to the pipeline, an expansion water tank meeting the standard volume and pressure must be installed behind the one-way valve.

4. Determine the installation position of the electric water heater, avoid the reinforcement and embedded pipeline in the wall, and drill two holes with medium 16mm and deep 90mm on the solid wall with an impact drill, and the two holes shall be on the same horizontal line, and the hole spacing is shown in the table below. More than 500mm of space shall be reserved on the right side of the electric water heater for maintenance.

5. Insert the hook expansion bolt into the hole, tighten it, and make the hook upward.

6. Lift the electric water heater, align the two square holes of the two wall hangers with the hooks of the two hook expansion bolts, and check whether the hook expansion bolts are loose to ensure that the electric water heater is firmly installed.

7. Connect the safety valve, drainage hose, water mixing valve, tap water inlet pipe and shower with the electric water heater (install a sealing ring at the joint).

8. The safety valve (factory original identification 0.8MPa) in the accessories shall be installed on the water inlet joint (as shown in Fig 3), and the raw material belt shall be wound to ensure sealing. The arrow direction shall be consistent with the water inlet flow direction of the electric water heater (as shown in Fig 3).

9. The net sealing gasket shall be installed at the cold water inlet of the safety valve, and the drainage hose at the pressure relief outlet of the safety valve shall be installed to maintain a continuous downward inclination.

10. It shall be installed in a frost-free environment and then extended to the ground leakage, kept connected with the atmosphere, and properly fixed to prevent scalding by discharging hot water or steam. The safety valve can prevent the tank pressure from exceeding the rated pressure by 0.1MPa. If the pressure in the tank is too high, the safety valve will automatically open and drain water from its pressure relief port to release the pressure. The water pipe connected to the electric water heater must be able to withstand the pressure of 0.8MPa and temperature of more than 100°C, and the joint shall be wrapped with sealing tape to ensure sealing.

11. Where water is used, it shall be able to drain smoothly.

12. Under normal use, the handle of the safety valve (Fig. 3) should be opened regularly to remove calcium carbonate deposition. The method is: pull the discharge handle upward to the horizontal position (if the handle is equipped
    with screws, remove the screws with a screwdriver before doing this action), and confirm whether the safety valve is blocked (whether there is water discharge). If it is blocked, please contact the maintenance department.

13. If users want a multi-channel water supply, they can connect the water pipe according to the method shown in Fig 4.

14. After confirming that the rated values of electricity meters, wires, switches, sockets, and fuses in the power supply system meet the power consumption requirements of this product, connect a separate power socket at an appropriate position to supply power to the electric water heater (as shown in Figure 5). The installation height of the power socket from the ground shall not be less than 1.8m.

15. After confirming that the rated values of electricity meters, wires, switches, sockets, and fuses in the power supply system meet the power consumption requirements of this product, connect a separate power socket at an appropriate position to supply power to the electric water heater (as shown in Figure 5). The installation height of the power socket from the ground shall not be less than 1.8m.
    Notes :

16. Do not put the socket in a place where water is easy to get into.

17. The socket must have a reliable grounding wire.

18. The socket should be kept dry to prevent leakage.

19. Electrical installation must be carried out by professionals.

Inspection and Commissioning

1. The pipeline connection and direction shall be reasonable, and there shall be no water leakage at each connection.
2. The electrical configuration shall be safe and correct, the electric water in the heater shall be reliably grounded, and the power plug and socket shall cooperate closely.
3. The mechanical connection shall be firm and reliable.
4. Check the possible leakage parts of the shell with a test pen or multi-meter to ensure that the electric water heater is safe and normal.
5. The electric water heater shall operate according to the use method in this manual, and all performance indexes shall be consistent with this manual.

CERTIFICATE OF GUARANTEE

The presentation of the purchase invoice accompanied by this guarantee certificate is essential. Covered Risks. This appliance is guaranteed against any malfunction, provided that it is intended for domestic use, proceeding to its repair within the warranty period and only by the authorized SAT network. Our Corbero appliances have the manufacturer’s legal warranty that covers any breakdown or defect for 36 months, from the invoice date of January 1, 2022. If necessary, we take care of any possible incident whenever it is due to a defective component or manufacturing fault.

Warranty Exceptions

• That the date of the certificate does not coincide with the date of sale of the original invoice.
• Faults produced by blow, by fall or any other cause of force majeure.
• If the device has been manipulated by unauthorized personnel. adults produced or derived as a consequence of improper use, installation defects, or modifications to the device that alter its operation.
•  Start-up, maintenance, cleaning, components subject to wear, lamps, aesthetic parts, oxidation, plastics, rubbers, housings, and crystals.
• Microwave ovens (with the exception of built-in ones) and tabletop ovens in the event of any incident of operation, they must be taken to the nearest technical service by the customer. They are not collected or repaired at home.
• Electric thermos guarantee. 3-year warranty including travel and labor costs that correspond to the repair of the product, having to have maintenance once every 12 months. Especially if you have installed a gas appliance, keep in mind as the owner of the installation, the obligation to carry out a complete review of the equipment, (according to Royal Decree 238 / 2013, of April 5. RITE. IT3, M. Lo thermos electrical, and boilers that include hot water storage tanks, for the benefit of the Guarantee to apply, it is mandatory that the magnesium anode is operational and that it performs the protection function adequately.
• For this, it is recommended that the anode be checked biannually by the Official Service and is renewed when necessary Periodicity must be annual in those areas with critical waters (CaCO3 content greater than 200mg/L, that is, from 20°H of hardness) Deposits without the correct state of the protection anode are not covered by the warranty Regardless of the type of tank or product, all heating or DHW overpressure valves must be channeled to avoid damage and n the house due to water discharges. The product warranty does not cover damages caused by not channeling the water spilled by this valve.

“THESE EXCEPTIONS VOID THE WARRANTY, THE REPAIR BEING CHARGED TO THE CUSTOMER”
Period covered in devices according to the law of guarantees in the sale of consumer goods Current law is ^RD 7/2021″

Method of Application

1. When using the water heater for the first time or after draining the tank and then using it again, the tank of the water heater must be filled with water first. The method is: open the water inlet valve, pull up the handle of the water
   mixing valve, and turn it clockwise to the high-temperature area, that is, start injecting water into the inner tank. When the hot water outlet comes out, it indicates that it is filled with water, then turn the handle of the water mixing
   valve counterclockwise to the low-temperature area and push it to the closed position (as shown in Fig 6).

2. Insert the power plug into the power socket to energize the water heater. At this time, the indicator light is on. If the power cord is damaged, it must be replaced by the manufacturer or its maintenance department or similar professionals in order to avoid danger.

3. This electric water heater provides emergency protective measures in case of an abnormal grounding system in normal use. It belongs to a class I electric water heater that provides emergency protective measures in case of
   an abnormal grounding system.

4. Description of Operation

5. ” Key
   Connect the power supply and the indicator light will be on for 2 seconds to enter the standby state or the state before the last power failure. The “ ” indicator in standby mode is on and off slowly, and other indicators are off. Press this key once to start the machine and enter the working state, “ ” indicator light is on, and other indicators indicate the actual temperature and working state mode.

6.  “ ∧ ” and “ ∨ ” Adjustment Keys
   When the machine is turned on, press the “ ∧ ” or “ ∨” key to enter the temperature setting state, and the set temperature parameters flash. At this time, press this key once, the set temperature will increase/decrease by 5 on the basis of the last set temperature, and cycle within 40-80°C. During the setting process, the corresponding setting temperature indicator flashes. When the temperature setting parameter does not change within seconds, the parameter setting result will automatically default, and the system will enter the corresponding working state.

7. “ ”Bacteriostatic Key
   Press the “ ”key to turn on or off the bacteriostatic mode after power-on. After the bacteriostatic mode is turned on, the bacteriostatic indicator light is on. Under the bacteriostatic mode, the water heater is bacteriostatic every 30 days. Bacteriostasis: the bacteriostasis indicator light flashes, and the set temperature is fixed at 75°C, and the system turns to the heat preservation state after heating to 75°C. At this time, the bacteriostasis ends after 30 minutes, and the bacteriostasis indicator light turns to be normally on; During bacteriostatic insulation, when the water temperature drops by 5°C, reheat to 75°C and keep heating to 75°C.
   Note: if the bacteriostasis mode is turned on for the first time, the water heater will conduct the first bacteriostasis after 3 days, and then conduct the bacteriostasis every 30 days.

8.  “ Smart ” Key
   In the power-on state, press and hold the “ ” Smart key for 3 seconds to enter the “Smart” mode. In the power-on state, the system will analyze, process and memorize according to the user’s water consumption habit for a week, and then the system will heat in advance according to the memorized water consumption time.

When the Smart mode is started for the first time or the first time after power is on, the water heater starts to remember the water consumption habits of users, and the “Smart” indicator flashes. After the statistical data of the second week takes effect, the “Smart” indicator is always on. At this time, the water heater will prepare hot water in advance according to the user’s water use habits in memory. Long press the “Smart” key for 3 seconds to exit the “Smart Housekeeper” mode, and the “Smart” indicator light goes out.

1. Heating Function:
   In the power-on state, the water heater directly heats. When the water heater reaches the set temperature, it stops heating and enters the insulation state. Then, if the water temperature drops below the set temperature by 8 degrees,
   reheat, and cycle. In the heating state, it is lit according to the actual temperature, the temperature indicator is on, and the current set temperature indicator flashes.

2. Insulation Function:
   When entering the insulation state, the temperature indicator lights up the corresponding indicator according to the actual temperature.

3.  Automatic Sleep Function:

   • In the power-on state, if there is no key operation for 3 minutes, it will enter the screen saver state (except heating and anti-freezing), and the brightness of the indicator light will dim.
   • In the heating state, reservation state, and anti-freezing state, it does not enter the screen saver.
   • In the screensaver state, press any key to wake up (if you enter the antifreeze function automatic wake-up), you will return to the display content in front of the screensaver, and you can press the key at this time.

4. Memory Function:
   It has a memory function (memorizing the on-off state and setting temperature). After power failure, it can automatically return to the working state before power failure.

5. Memory Clearing Function
   Press and hold the “ ” and “ ” keys for 3 seconds at the same time, the indicator light will be fully on, and the buzzer will beep. After 2 seconds, it will enter the standby mode. At this time, press the “ ” key to return to the factory default value (standby mode, set temperature 75°C).

6. Antifreeze Protection Function:
   When the system detects that the water temperature of the inner tank is ≤ 6°C under power, it will heat automatically. When the temperature of the inner tank is ≥ 10, it will stop heating. (when heating, t °C the indicator light is not
   displayed, i.e. hidden heating mode).

7. Buzzer Function:
   The sound is sent out by the buzzer. The sound shall be clear. In case of failure, it shall sound 10 times, and each effective key operation shall sound 1 time.

8.  Safety Self-Inspection Function:
   Whether in the state of power-on or shutdown, the machine carries out real- time and all-around safety self-inspection (dry burning, sensor, and over- temperature fault detection).

9. Alarm Function and Fault Self-inspection:
   In case of dry burning, sensor, and over-temperature faults, the indicator combination flashes to indicate the fault, and other indicators do not display. At this time, all relays are disconnected and all keys are invalid; Only after the fault
   is removed and powered on again, the system will return to the shutdown state. Overtemperature fault:“ ” key + 40°C indicator light flashes;

   • Sensor 1 fault:“ ” key + 50°C indicator light flashes;
   • Dry burning fault: “ ” key+ 60°C indicator flashes;
   • Sensor 2 fault:“ ” key + 70°C indicator light flashes;

Drainage and Cleaning

1. Cut off the power supply and close the water inlet valve before the sewage discharge.
2. This product can drain and clean the electric water heater by the following methods: cut off the power supply and close the water inlet valve; Remove the water pipe connected with the water inlet and outlet; Connect the water a pipe connected with the water inlet to the water outlet; Remove the safety valve and open the water inlet valve for cleaning; Remove the water pipe connected with the water outlet to drain it by itself.
3.  After draining and cleaning, reinstall the water outlet pipe and connecting pipe.
4. To clean the outside of the water heater, gently wipe it with a damp cloth dipped in a small amount of neutral cleaning agent (do not use gasoline or other solutions), wipe it with clean water, and dry it with a dry cloth to keep the
5. When the water flow of the shower is not smooth, it may be caused by its internal blockage. Remove the shower to remove the blockage.

Electrical Schematic Diagram

Maintenance

In order to prolong the service life and ensure that the water heater always works with high efficiency, professionals can maintain the electric water heater according to the following methods:

1. Clean the heating elements regularly (according to the local water quality) and remove the scale bonded to the heating element; In high-scale areas, users can install anti-scaling devices at the front end of the inlet (cooling) pipe by themselves.
2. Check the magnesium rod installed on the heating element regularly (according to the local water quality). If it has been exhausted, please replace it in time.

Faults and Troubleshooting

No water from hot water outlet

| The water supply system is cut off or the water pressure is too low| Check the water supply system
The inlet valve is not opened or the water mixing valve fails| Open the water inlet valve or replace the water mixing valve
The outlet water is cold water (no display on the operation panel)| Power failure or power switch in off position| Check the power supply line
Internal circuit failure| Contact the maintenance department

The outlet water is cold water (displayed on the operation panel)

| The heating temperature is set too low| Raise the heating temperature
Heating time is too short| Continue heating
Water mixing valve failure| Replace the water mixing valve
Internal circuit failure| Contact the maintenance department
“  ”+40℃ The indicator light flashes| Heating water temperature out of control exceeds 90 ℃| Contact the maintenance department
“  ”+50℃ The indicator light flashes| Is the sensor 1 damaged| Contact the maintenance department

“  ”+60℃ The indicator light flashes

| The water heater is not filled with water and is directly powered on, resulting in dry burning| Cut off the power supply and fill the water heater with water before energizing
“  ”+70℃ The indicator light flashes| Is the sensor 2 damaged| Contact the maintenance department

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