Corbero Ctwd30dt Electric Water Heater User Manual

CTWD30DT Electric Water Heater

CTWD30DT / CTWD50DT / CTWD80DT / CTWD100DT
Obrigado por ter escolhido o nosso produto. Por favor, leia atentamente este manual antes de instalar e u lizar este produto.
CTWD30DT / CTWD50DT / CTWD80DT / CTWD100DT
Obrigado por ter escolhido o nosso produto. Por favor, leia atentamente este manual antes de instalar e u lizar este produto.

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 shower and washing in families, enterprises and institutions, service industries and other places (not drinkable).
Characteristic: 1. With 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 ensure 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 the national safety certification, and its safety is more guaranteed. 5. Durable: it adopts high-quality heat-resistant stainless steel heating element and electrostatic dry powder enamel liner, and is equipped with 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

Rated Capacity (L)

30

50

73

92

Rated Power

1800W

Rated Voltage

220-240V~50-60Hz

Rated Pressure Maximum Set Temperature

0.8MPa 80

F G

A B

C

F

D

D

C

G

B

E

A

30L

516

220

280

575

406

F

199

G

207

73L

92L

516

556

556

220

240

240

280

300

300

804

1009

1219

406

441

441

199

199

199

422

560

720

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 heater.
1. Installation Preparation (1) Professional installation personnel shall prepare installation tools and necessary
measuring qualified inspection instruments. (2) Check whether the electric water heater is in good condition and whether the
attached documents and accessories are complete. (3) Carefully read the operation manual to understand the function, operation method,
installation requirements and installation method of the electric water heater to be installed. (4) To check the power supply of users, 230V~/50Hz power supply must be used. The electrical connection of electric water heater shall generally adopt special branch circuit, and its capacity shall be greater than 1.5 times of the maximum current value of 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 electric energy meter, wire and separate fixed socket meet the requirements of electric water heater. Check the water pressure of tap water with a pres-sure gauge. If the water pressure is greater than 0.8MPa, a pressure reducing valve shall be installed on the inlet pipe. (5) Assist users in selecting the installation position of 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. The bearing capacity of the mounting surface shall not be less than 4 times of 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.

2. Installation Operation (1) The attached accessories shall be used for the installation of 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.

Electric water heater body

Hook expansion bolt

Wall Wall hanging

Rated Capacity (L) 30 50 73 92

Hole Vertical

199

spacing

h (mm) Horizontal 207 422 560 720

Electric water heater body Hook expansion bolt

Note: floor mounted installation is not allowed.

Wall

Wall hanging

(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 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).

Notes: The safety valve (factory original identification

Water Inlet Joint Check Relief Valve

0.8MPa) in the accessories shall be installed

Handle

on the water inlet joint (as shown in Fig 3), and

Screw

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 Cold Water Inlet

water heater (as shown in Fig 3). The net

Sealing Gasket

sealing gasket shall be installed at the cold water inlet of the safety valve, and the drainage

with Mesh Drain Hose

Pressure Relief Port Figure 3

hose at the pressure relief outlet of the safety

valve shall be installed to maintain a continuous

downward inclination. 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

Figure 4

will automatically open and drain water from its

Electric Water Heater Power Socket

pressure relief port to release the pressure.

The water pipe connected to the electric
water heater must be able to withstand pressure of 0.8MPa and temperature of more than 100°C, and the joint shall be wrapped with sealing tape to ensure sealing.

Ground Wire

Ground

Figure 5

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

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.

L

(8) If users want multi-channel water supply, they can connect the water pipe

E

according to the method shown in Fig 4.

N

(9) 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 power socket from the ground shall

not be less than 1.8m.

(10) 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 power socket from the ground shall

not be less than 1.8m.

Notes:

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

The socket must have a reliable grounding wire.

The socket should be kept dry to prevent leakage.
Electrical installation must be carried out by professionals. 3. 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
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.

N

1

2

11

1800W

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).

Close

Open

Low Temperature Zone Low Temperature Zone
Figure 6

2. Insert the power plug into the power socket to energize the water heater. At this time, the indicator light is on.
(1) 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.
(2) This electric water heater provides emergency protective measures in case of abnormal grounding system in normal use. It belongs to class I electric water heater that provides emergency protective measures in case of abnormal grounding system.
3. Description of Operation
Anti-bacteria

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50

80

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SMART
Schematic Diagram of Operation Panel

1. ” ” 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.
2. ” ” 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 5 seconds, the parameter setting result will be automatically defaulted, and the system will enter the corresponding working state. 3. ” “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, 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. 4. ” 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 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.
Detailed Description of Functions
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: a. 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. b. In the heating state, reservation state and anti freezing state, it does not enter the screen saver. c. 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 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 on, it will heat automatically. When the temperature of the inner tank is 10°C, it will stop heating. (when heating, 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-round 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.
a) Overtemperature fault:” ” key + 40°C indicator light flashes;
b) Sensor 1 fault:” ” key + 50°C indicator light flashes;
c) Dry burning fault: ” ” key+ 60°C indicator flashes;
d) 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 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
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 electric water heater dry. 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.

Anti-bacteria

65

70

55

50

80

40

SMART

Electrical Schematic Diagram

Temperature Controller

L

Brown

E N

Yellow/Green Blue

16A Power Plug

Thermal Cut-off

L in L out
N Controller

Temperature Temperature Sensor 1 Sensor 2

Heating Element 1800W

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.

11

Faults and Troubleshooting

Faults

Analysis of Causes

Troubleshooting

No water from hot water outlet
The outlet water is cold water (no display on the operation panel)
The outlet water is cold water (displayed on the operation panel)
” “+40 The indicator light flashes ” “+50 The indicator light flashes
” “+60 The indicator light flashes
” “+70 The indicator light flashes

The water supply system is cut off or the water pressure is too low The inlet valve is not opened or the water mixing valve fails Power failure or power switch in off position Internal circuit failure The heating temperature is set too low Heating time is too short Water mixing valve failure
Internal circuit failure Heating water temperature out of control exceeds 90 Is the sensor 1 damaged The water heater is not filled with water and is directly powered on, resulting in dry burning Is the sensor 2 damaged

Check the water supply system
Open the water inlet valve or replace the water mixing valve Check the power supply line Contact the maintenance department Raise the heating temperature Continue heating Replace the water mixing valve Contact the maintenance department Contact the maintenance department Contact the maintenance department Cut off the power supply and fill the water heater with water before energizing Contact the maintenance department

Note: if your water heater is abnormal and cannot be used normally, please handle it according to “fault and its handling method”. If you have any electrical problems, please contact the special maintenance department designated by the company for professional maintenance.

12

Water Inlet Joint Check Relief Valve
Handle Screw

Cold Water Inlet Sealing Gasket with Mesh
Drain Hose

Pressure Relief Port Figure 3

Figure 4
Electric Water Heater Power Socket
Ground Wire

Ground

Figure 5

30

50

73

92

1800W

220-240V~50-60Hz

0,8MPa

80

F G

A B

C

F

D

D

C

G

B

E

A

30L

516

220

280

575

406

F

199

G

207

73L

92L

516

556

556

220

240

240

280

300

300

804

1009

1219

406

441

441

199

199

199

422

560

720

F G

A B

C

F

D

D

C

G

B

E

A

30L

516

220

280

575

406

F

199

G

207

73L

92L

516

556

556

220

240

240

280

300

300

804

1009

1219

406

441

441

199

199

199

422

560

720

30

50

73

92

1800W

220-240V~50-60Hz

0.8MPa

80

Figure 3 Figure 4 Figure 5

1800W

L

E

N

N

2

Anti-bacteria

65

70

55

50

80

40

SMART