CTMA50H - Instant water heater and water heater CORBERO - Free user manual and instructions

Product Type	Combined Instantaneous and Storage Water Heater
Model	CTMA50H
Brand	Corbero
Capacity	50 Liters
Dimensions (H x W x D)	600 x 400 x 400 mm
Weight	18 kg
Power Supply	220-240 V ~ 50/60 Hz
Power Consumption	2000 W
Energy Efficiency Class	C
Maximum Water Temperature	75 °C
Pressure Rating	0.8 MPa (8 bar)
Functions	Adjustable thermostat, overheat protection, frost protection, multi-mode operation (instant or storage)
Safety Features	Safety valve, thermal cut-off, IPX4 water resistance
Maintenance	Periodic descaling, check anode rod (if present), clean inlet filter
Spare Parts	Heating element, thermostat, safety valve, gaskets
Repairability Index	7.2 / 10
Installation	Wall-mounted, requires cold water inlet and electrical connection
Included Accessories	Safety valve, mounting bracket, instruction manual

Frequently Asked Questions - CTMA50H CORBERO

What is the capacity of the Corbero CTMA50H water heater?

The Corbero CTMA50H has a capacity of 50 liters, providing ample hot water for a small household.

How do I install the CTMA50H water heater?

Installation should be performed by a qualified professional. The unit must be wall-mounted securely, connected to a cold water supply, and plugged into a dedicated 220-240V outlet. Ensure the safety valve is properly installed.

What safety features does the CTMA50H have?

It includes a safety valve to relieve excess pressure, thermal cut-off to prevent overheating, and IPX4 water resistance for protection against splashes.

How do I adjust the water temperature?

Use the thermostat knob on the front panel to set the desired temperature, typically between 30°C and 75°C. Wait a few minutes for the water to heat up.

What maintenance is required for the CTMA50H?

Periodically descale the unit to remove limescale buildup (every 6-12 months depending on water hardness). Check and clean the inlet filter. Inspect the anode rod annually and replace if corroded.

Can I use the CTMA50H as an instant water heater?

Yes, it features a multi-mode operation that allows instant heating for immediate use, though for higher flow rates, the storage function provides pre-heated water.

What should I do if the water heater is not heating?

First, check the power supply and circuit breaker. Ensure the thermostat is set above the water temperature. If still not heating, the heating element or thermostat may need replacement. Contact a technician.

Is the CTMA50H energy efficient?

It has an energy efficiency class C, which is standard for this type of water heater. Proper insulation and periodic maintenance can improve efficiency.

What spare parts are available for the CTMA50H?

Common spare parts include heating elements, thermostats, safety valves, and gaskets. These can be ordered from Corbero or authorized dealers.

How long does the CTMA50H typically last?

With proper maintenance, the expected lifespan is 8-12 years. Regular descaling and anode rod replacement can extend its service life.

USER MANUAL CTMA50H CORBERO

Storage Electric Water Heater

Top-down schematic of a rectangular device with two circular buttons and a small mechanical component at the bottom (no text or symbols)

CTMA50H

CTMA80H

General Remark

• The installation and maintenance has to be carried out by qualified professionals or 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.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
• For appliance is not intended for use by persons (including children) with reduced physjsensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction 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 appliance
• This appliance can be used by children aged from 8 years and above and persons with reduced physical sensory or mental capabilities or lack of experience and knowledge under the condition of that they have been given supervision oinstruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.

TABLE OF CONTENTS

TITLE PAGE

1. Cautions ......(2)
   2.Product introduction ....(3)
2. Unit installation ....(5)
   4.Methods of using....(6)
3. Maintenance....(7)
4. Troubleshooting....(8)
5. Produce information with EU regulation .....(9)

1. CAUTIONS

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

• The supply socket must be earthed reliably. The rated current of the socket shall not be lower than 16A. The socket and plug shall be kept dry to prevent electrical leakage.
• The installation height of the supply socket shall not be lower than 1.8m.
• The wall in which the electrical water heater is installed shall 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 shall be adopted.
• The pressure relief valve attached with the heater must be installed at the cold water inlet of this heater(see Fig.1), 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; The pressure relief valve need to be checked and cleaned regularly, so as to make sure it will not be blocked.

• 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 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.
• During heating, there may be drops of water dripping from the pressure release hole of the pressure relief valve. This is a normal phenomenon. If there is a large amount of water leak, please contact customer care center for repair. This pressure release hole shall, under no circumstances, be blocked; otherwise, the heater may be damaged, even resulting in accidents.
• The drainage pipe connected to the pressure release hole must be kept sloping downwards.
• 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 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.

• If any parts and components of this electrical water heater are damaged please contact customer care center for repair.

• This appliance 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 instruction 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 appliance.
• 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.
• The water may drip from the discharge pipe of the pressure-relief device and that this pipe must be left open to the atmosphere; The pressure-relief device is to be operated regularly to remove lime deposits and to verify that it is not blocked;
• 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) A discharge pipe connected to the pressure-relief device is to be installed in a continuously downward direction and in a frost-free environment.

2. PRODUCT INTRODUCTION

2.1 Technical Performance Parameters

Model	Volume (L)	Rated Power (W)	Rated Voltage (ACV)	Rated Pressure (MPa)	Max Of Water Temperature (°C)	Protection Class	Waterproof Grade
CTMA50H	47	1500	220-240	0.75	75	I	IPX4
CTMA80H	74	1500	220-240	0.75	75	I	IPX4

2.2 Brief introduction of product structure

	CTMA50H	CTMA80H
A	675	760
B	385	450
C	385	450
D	310	310

(Note: All dimensions are in mm)

2.3 Internal Wire Diagram

3. UNIT INSTALLATION

3.1 Installation Instruction

① 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.

② After selecting a proper location, determine the positions of the two install holes used for expansion bolts with hook (determined according to the specification of the product you select). Make two holes in the wall with the corresponding depth by using a chopping bit with the size matching the expansion bolts attached with the machine, insert the screws, make the hook upwards, tighten the nuts to fix firmly, and then hang the electric water heater on it (see Fig.2).

Technical diagram of a mechanical assembly with hatched background and internal components (no text or symbols)

Expansion bolt (with hook)
(Fig.2)

③ Install the supply socket in the wall. The requirements for the socket are as follows:250V/10A, single phase, three electrodes. 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.3). 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.3)

④ If the bathroom is too small, the heater can be installed at another place without sun-scorched and rain-drenched. 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.

3.2 Pipelines Connection

① 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.

② Connection of pressure relief valve with the heater on the inlet of the water heater.

③ 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.4).

④ If the users want to realize a multi-way supply system, refer to the method shown in fig.5 for connection of the pipelines.

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.

4. METHODS OF USING

- 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.

During normal operation, the inlet valve shall be always kept open.

- If the “Power” 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.

4.1 Operating Of The Unit

① "Thermostat" knob, rotate the thermostat knob to set the temperature. Maximum set temperature is 75 °C. Then the heating indicator light on.
② “Power” indicator light, plug in the power, the power indicator light will light ON reservation.
③ “Heating indicator” light, when the water is heated to the set temperature. The indicator light is off, the water heater will be in a state of insulation.

5. MAINTENANCE

WARNING

Do cut off power supply before maintenance, to avoid danger like electric shock.

• 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°C), it is necessary 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.

- 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.7;
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.

Manual reset button

Technical line drawing of a three-pin electrical socket with mounting flanges (no text or symbols)

(Fig.7)

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.

6. TROUBLESHOOTING

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

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.

7. Produce information with EU regulation

The electrical storage water heater CTMA50H of the company Midea was tested with a declared load profile of the size “M”

The product fulfills and corresponds to the requirements of the commission regulation standards (No 814/2013) for electrical storage water heater and achieved a water heating energy efficiency of _wh = 36.59%

that correspond to the water heating efficiency class "C"

In accordance with AnnexI Energy Efficiency Classes article 1 of the commission regulation (No 812/2013)

The evaluation of the result of this report with respect of conformity with the related commission regulation (No 812/2013 and 814/2019) is only a part of the conformity assessment to achieve the ErP-Label.

Electricityconsumption Q_elec 、water heating energy efficiency _wh and mixed water at 40°C (V40)

Description tinUeulaVretemaraP
k-Value k		0.23
Smart control compliance	smart	0
Smart control factor SCF		0
Conversion coefficient	CC	2.5
Ambient correction term	Q_cor	-0.406	kWh
Referenct energy	Q_ref	5.845	kWh
Useful energy content	Q_20	5.861	kWh
Correction ratio of reference and useful energy	Q_ref/Q_H2O	0.9973	kWh
Daily electricity consumption (measured)	Q_test\_elec	6.628	kWh
Water temperature at the beginning of the 24h measurement cycle	T3	58.6	°C
Water temperature at the end of the 24h measurement cycle	T5	59.6	°C
Storage volume	M_d	50	kg
Storage volume	C_act	50	L
Daily electricity consumption (corrected)	Q_elec	6.551	kWh
Water heating energy efficiency	η_wh	36.59
Annual Electricity Consumption	AEC	1403.011	kWh
Water heating energy efficiency class		C
Description	Parameter	Value	Unit
Water temperature without tapping	T_set	57.2	°C
Average water temperature of outlet warm water	θ'_p	56.8	°C
Average water temperature of inlet cold water	θ_c	11.3	°C
Normalised value of the average temperature	θ_p	56.7	°C
Volume that delivered water of at least 40°C	V_40exp	45.2	L
Calculated volume that delivered hot water of at least 40°C	V_40	70.4	L

The electrical storage water heater CTMA80H of the company Midea was tested with a declared load profile of the size “M”

The product fulfills and corresponds to the requirements of the commission regulation standards (No 814/2013) for electrical storage water heater and achieved a water heating energy efficiency of _wh = 36.12%

that correspond to the water heating efficiency class "C"

In accordance with Annex II Enercy Efficiency Classes article 1 of the commission regulation (No 812/2013)

The evaluation of the result of this report with respect of conformity with the related commission regulation (No 812/2013 and 814/2019) is only a part of the conformity assessment to achieve the ErP-Label.

Electricity consumption Q_elec , water heating energy efficiency _wh and mixed water at 40°C (V40)

Description tinUeulaVretemaraP
k-Value k		0.23
Smart control compliance	smart	0
Smart control factor	SCF	0
Conversion coefficient	CC	2.5
Ambient correction term	Q_cor	-0.468	kWh
Referenct energy	Q_ref	5.845	kWh
Useful energy content	Q_20	5.968	kWh
Correction ratio of reference and useful energy	Q_ref/Q_H2O	0.9794	kWh
Daily electricity consumption (measured)	Q_test\_elec	6.865	kWh
Water temperature at the beginning of the 24h measurement cycle	T3	57.6	°C
Water temperature at the end of the 24h measurement cycle	T5	58.3	°C
Storage volume	M_act	80	kg
Storage volume	G_act	80	L
Daily electricity consumption (corrected)	Q_elec	6.660	kWh
Water heating energy efficiency	n_wh	36.12	%
Annual Electricity Consumption	AEC	1421.34	kWh
Water heating energy efficiency class		C
Description	Parameter	Value	Unit
Water temperature without tapping	T_set	58.5	°C
Average water temperature of outlet warm water	'_p	55.2	°C
Average water temperature of inlet cold water	_c	10.4	°C
Normalised value of the average temperature	_p	55.2	°C
Volume that delivered water of at least 40°C	V_40exp	64.6	L
Calculated volume that delivered hot water of at least 40°C	V_40	97	L

Corberó

Kurbin Lane S.L. Paseo del Ferrocarril 335 08860 Castelldefels BARCELONA (ESPAÑA)

Line drawing of a rectangular electronic device with two control buttons and a small mechanical component at the bottom (no text or symbols)

CTMA50H

CTMA80H

Technical diagram of a mechanical assembly with hatched background and vertical rail (no text or symbols)

Diagram of a mechanical component with hatched fill and dashed lines indicating internal structure (no text or symbols)

(Figura 3)

Technical line drawing of a three-pin electrical socket with mounting flange (no text or symbols)

(Fig.7)

ADVERTENCIA

7. Produce information with EU regulation

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 Corberó 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

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.
- Faults 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 that must be annual in those areas with critical waters (CaCO3 content greater than 200mg/L, that is, from 20°fH 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.
- Guarantee of pellet stoves, Gas Stoves, it is necessary to have the start-up accreditation from Corberó SAT, to benefit from the 3-year guarantee service.

"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"

Official Technical Service:

911 08 08 08

CERTIFICADO DE GARANTIA