GBF80SMC6 - Water heater GORENJE - Free user manual and instructions

Product Type	Electric Water Heater
Model	GBF80SMC6
Volume	76.1 L
Mixed Water at 40 °C (V40)	116 L
Dimensions (H x W x D)	820 x 615 x 454 mm
Empty Weight / Filled Weight	30 kg / 110 kg
Power Supply	230 V~, 2000 W (2 x 1000 W)
Protection Class	I
Degree of Protection	IP24
Rated Pressure	0.6 / 0.9 / 1.0 MPa (6 / 9 / 10 bar)
Energy Efficiency Class	B
Annual Electricity Consumption	1313 kWh
Daily Electricity Consumption	7.251 kWh
Heating Time (10 °C to 65 °C)	2 h 37 min
Declared Load Profile	M
Electronic Control	EcoSmart with temperature display, smart mode, anti-legionella function
Temperature Settings	10 °C (frost protection), 35 °C, 57 °C (ECO), 75 °C
Safety Features	Overheating protection (thermal cut-out), dry start protection, safety valve required
Installation	Vertical on wall or horizontal on floor (requires qualified staff)
Maintenance	Periodic inspection of protective anode, limescale removal by authorized service
Warranty	Corrosion warranty valid only with regular anode inspections

Frequently Asked Questions - GBF80SMC6 GORENJE

How do I set the water temperature on the Gorenje GBF80SMC6?

Press the button (②) repeatedly to cycle through temperature levels: * (frost protection, ~10 °C), 35 °C, eco (~57 °C, recommended for energy saving), and 75 °C. The display shows the set temperature.

What is the EcoSmart mode and how do I use it?

EcoSmart is a smart function that learns your hot water usage habits over 7 days and optimizes heating to reduce energy consumption. To start recording, press button (④) – the green light flashes. After 7 days, the mode runs automatically. Press again to disable or hold to restart recording if habits change.

Why does water drip from the safety valve?

Dripping is normal in a closed pressurized system due to thermal expansion. The safety valve releases excess pressure. If dripping is excessive, install an expansion tank (at least 5% of heater volume) on the inlet pipe.

What should I do if the display shows error code E1, E5, or E44?

E1 (temperature sensor error): Call service. E5 (overheating >90 °C): Automatically clears when temperature drops; if repeated, call service. E44 (dry start): Fill heater with water, then switch off or hold button (②) for 3 seconds to reset.

How do I drain the water heater for storage or repair?

Disconnect power, open hot water tap to drain, close cold water inlet, and unscrew the flexible pipe on the hot water outlet. Use a T-element with a drain valve between inlet pipe and safety valve for easier draining. After refilling, let water run for at least 2 minutes.

Is it necessary to install a safety valve?

Yes, for closed pressurized systems a safety valve (rated 0.6, 0.9, or 1.0 MPa as per label) must be installed on the cold water inlet to prevent overpressure. Do not place any shut-off valve between the heater and safety valve.

How often should the protective anode be inspected?

Regular inspections by an authorized service provider are required to maintain tank corrosion warranty. The interval is stated in the warranty certificate; typically every 1-2 years depending on water quality.

Can the water heater be installed horizontally?

Yes, the universal design allows both vertical wall mounting and horizontal floor installation. Follow the dimensions in the manual (Fig. 1 and 2) and use suitable wall anchors (min. Ø8 mm) for heavy weight when filled.

What does the anti-legionella function do?

If water hasn't reached 65 °C for 14 consecutive days, the heater automatically heats to 70 °C and maintains for 120 minutes to kill Legionella bacteria.

How do I clean the exterior of the water heater?

Use a soft cloth with mild detergent for smooth varnished surfaces. Avoid alcohol-based or abrasive cleaners.

USER MANUAL GBF80SMC6 GORENJE

Line drawing of a cylindrical water heater with labeled control panel (no text or symbols beyond branding)

GBF 50-150 E5

Line drawing of a circular device with concentric rings and control knobs (no text or symbols)

Line drawing of a circular electronic device with a handle and control buttons (no text or symbols)

The appliance may be used by children older than 8 years old, elderly persons and persons with physical, sensory or mental disabilities or lacking experience and knowledge, if they are under supervision or taught about safe use of the appliance and if they are aware of the potential dangers.
Children should not play with the appliance.
Children should not clean or perform maintenance on the appliance without supervision.
Installation should be carried out in accordance with the valid regulations and according to the instructions of the manufacturer and by qualified staff.
In a closed, pressurised system of installation, it is obligatory to install a safety valve on the inlet pipe with a rated pressure of 0.6 MPa (6 bar), 0.9 MPa (9 bar) or 1.0 MPa (10 bar) (see the label), which prevents the elevation of pressure in the boiler by more than 0.1 MPa (1 bar) above the rated pressure.
Water may drip from the outlet opening of the safety valve, so the outlet opening should be set to atmospheric pressure.
The outlet of the safety valve should be installed facing downwards and in a non-freezing area.
To ensure proper functioning of the safety valve, the user should perform regular controls to remove limescale and make sure the safety valve is not blocked.
Do not install a stop valve between the water heater and the safety valve, because it will impair the pressure protection of the heater!
Before connecting it to the power supply, the water heater must be filled with water!
The heater is equipped with an additional thermal cut-off for protection in case of failure of the operating thermostat. In this case, however, the temperature of the water in the heater can reach up to 130 °C according to the safety standards. During the water supply installation, the possibility of temperature overloads should be taken into account.
If the heater is to be disconnected from the power supply, please drain any water from the heater to prevent freezing.
Water can be drained from the heater through the boiler inlet pipe. For this purpose it is advisable to install a T-element with an outlet valve between the inlet pipe and safety valve.
Please do not try to fix any defects of the water heater on your own. Call the nearest authorised service provider.

Dear buyer, thank you for purchasing our product. PRIOR TO THE INSTALLATION AND FIRST USE OF THE ELECTRIC WATER HEATER, PLEASE READ THESE INSTRUCTIONS CAREFULLY.

This water heater has been manufactured in compliance with the relevant standards and tested by the relevant authorities as indicated by the Safety Certificate and the Electromagnetic Compatibility Certificate. Its technical characteristics are indicated on the label on the bottom of the heater next to the pipes. The installation must be carried out by qualified staff. All repairs and maintenance work within the water heater, e.g. lime removal or inspection/replacement of the protective anticorrosion anode, must be carried out by an authorised maintenance service provider.

INSTALLATION

The water heater shall be installed as close as possible to the outlets. When installing the water heater in a room with a bathtub or shower, take into account the requirements defined in IEC Standard 60364-7-701 (VDE 0100, Part 701). It has to be fitted to the wall using appropriate wall screws with a minimum diameter of 8 mm. A wall with a poor load-bearing capacity must be properly reinforced where the heater will be installed. Due to its universal construction, the water heater can be installed vertically on the wall or horizontally on the floor. To facilitate future service interventions, you are advised to install the heater in accordance with the installation measurements (see Fig. 1 and Fig. 2).

Fig. 1: Vertical installation on a wall

Fig. 2: Horizontal installation on the floor

	A B C G
GBF 50 E5	600 415 190 260
GBF 80 E5	820 615 210 360
GBF 100 E5	965 765 205 510
GBF 120 E5	1120 915 210 510
GBF 150 E5	1335 1115 225 510

Connection and installation dimensions of the water heater [mm]

CONNECTION TO THE WATER SUPPLY

The water heater connections for the inlet and outlet of water are colour-coded. The inlet of cold water is marked with blue colour, while the hot water outlet is marked with red colour.

The water heater can be connected to the water supply in two ways. The closed-circuit pressure system enables several points of use, while the open-circuit gravity system enables a single point of use only. The mixer taps must also be installed in accordance with the selected installation mode.

In a closed, pressurized system (Fig. 3) pressurised mix taps should be used at the outlet points. To ensure safe operation of the heater a safety valve should be installed on the inlet pipe to prevent elevation of pressure for more than 0.1 MPa (1 bar) above the nominal pressure. The outlet opening on the safety valve must be equipped with an outlet for atmospheric pressure. The heating of water in the heater causes the pressure in the tank to increase to the level set by the safety valve. As the water cannot return to the water supply system, this can result in dripping from the outlet of the safety valve. The drip can be piped to the drain by installing a catching unit just below the safety valve. The drain installed below the safety valve outlet must be piped down vertically and placed in an environment that is free from the onset of freezing conditions.

To avoid water dripping from the safety valve, an expansion tank should be installed on the inlet pipe of the heater with the capacity of at least 5 % of the heater volume.

To ensure proper operation of the safety valve, periodical inspections must be carried out to remove limescale and make sure the safety valve is not blocked.

To check the valve, open the outlet of the safety valve by turning the handle or unscrewing the nut of the valve (depending on the type of the valve). The valve is operating properly if the water comes out of the nozzle when the outlet is open.

An open-circuit, non-pressurised system (Fig. 4) requires the installation of a non-return valve at the water inlet to prevent water draining out from the tank in the event of the water supply running dry. This installation mode requires the use of an instantaneous mixing tap.

As the heating of water expands its volume, this causes the tap to drip. The dripping cannot be stopped by tightening it further; on the contrary, the tightening can only damage the tap.

graph LR
    A["1234ab567"] --> B["T"]
    B --> C["Valve"]
    C --> D["Pressure Gauge"]
    D --> E["Directional Control Valve"]
    E --> F["Return Line"]
    F --> G["H"]
    style A fill:#f9f,stroke:#333
    style G fill:#ccf,stroke:#333

Fig. 3: Closed (pressure) system

graph TD
    A["Container Tank"] --> B["T"]
    A --> C["H"]
    B --> D["Valve 9"]
    C --> E["Valve 8"]
    D --> F["Directional Arrow"]
    E --> G["Directional Arrow"]
    F --> H["Downward Arrow"]
    G --> I["Downward Arrow"]

Fig. 4: Open (non-pressure) system

LEGEND

1 Pressure mixer taps
2 Expansion tank
3 Safety valve
a - Test valve
b - Non-return valve
4 Funnel with outlet connection
5 Checking fitting
6 Pressure reduction valve
7 Closing valve
8 Non-return valve
9 Low pressure mixer tap
H Cold water
T Hot water

No closing valve may be built-in between the water heater and return safety valve, because with it the pressure protection would be impeded!

The heater can be connected to the domestic water supply network without a pressure-reducing valve if the pressure in the network is lower than the nominal pressure. If the pressure in the network exceeds the nominal pressure, a pressure-reducing valve must be installed.

Before connecting it to the power supply, the water heater must be filled with water.

When filling the heater for the first time, the tap for the hot water on the mixing tap must be opened. When the heater is filled with water, the water starts to run through the outlet pipe of the mixing tap.

CONNECTING THE WATER HEATER TO THE POWER SUPPLY NETWORK

Top-down schematic of a circular device with internal components and a handle (no text or symbols)

Before connecting to the power supply network, install a power supply cord in the water heater, with a min. diameter of 1.5 mm^2 (H05VV-F 3G 1.5 mm²). To do this, the protective plate must be removed from the water heater.

In the electrical installation, please install a disconnect switch to separate all poles from the power supply network in accordance with the national regulations.

Fig. 5: Removing the protective cover

Fig. 6: Electric installation

LEGEND

1 Connection terminal
2 Thermal cut-out
3 Electronic regulator
4 Electric heating element (2 x 1000 W)
5 Temperature sensor

L Live conductor

N Neutral conductor

± Earthing conductor

CAUTION: Before any intervention into the interior of the water heater, disconnect it from the power supply network! This intervention may only be performed by a trained professional!

USE OF THE HEATER

After it has been connected to the water and power supply grid, the heater is ready to be used. When connected to the power supply, the heater runs in standby mode. In the standby mode, the heater maintains the water temperature of 10 °C .

LEGEND

1 - display of the set/actual temperature of water in the heater, signalisation of errors
2 - On/Off button, temperature setting
3 - indication of the "SMART" function
4 - switch for the "SMART" function

Fig. 7: Control panel

The heater is equipped with the "EcoSmart" electronic regulator, which enables the setting of water temperature, error diagnostics and smart mode with which you can reduce the use of electric energy.

Switching the heater on/off

The water heater can be switched on by holding the ② button for about 3 seconds. By holding the ② button for about 3 seconds again, the heater goes into standby.

Operating the heater - manual setting

Temperature is set by pressing button ② until you get the desired temperature level (preset temperature level is 57 °C):

* - Freeze protection, temperature about 10 °C
- Water temperature about 35 °C.
eco - Water temperature about 57 °C.
- Water temperature about 75 °C.

Once the maximum level "11 is achieved, pressing the 2 button returns the temperature to the first setting." We recommend the "e setting. This setting is the most energy-efficient. The temperature of water is about 57^ , while limescale production and heat loss will be smaller than in case of higher temperature settings.

The temperature of water in the heater is indicated on the display 1.

If the heater will not be used for a longer period of time, please protect its contents from freezing by setting the temperature to the " ^* position. At this setting, the heater will maintain the temperature of water at about 10 °C.

Functioning of the heater in the "EcoSmart" mode

This mode is appropriate especially if you have well-established hot water consumption habits (e.g. showering every day at approximately the same time). To start the heater in the "EcoSmart" mode, you first have to start recording. During the recording time, the electronic regulator remembers your habits and takes them into account while heating the water after the recording period has ended. The recording takes place for 7 days. The "EcoSmart" mode reduces the consumption of electrical energy.

• Pressing button no. 4 will begin the recording of your habits. The green control light 3 will flash during the recording period. Once recording concludes after 7 days, the recording regime will begin running automatically. The green control light 3 will light up when the heater is functioning in the "EcoSmart" mode.
• By pressing 4 again, you can switch off the recording or the "EcoSmart" function. The heater resumes to the basic mode of operation. The water is heated to the set temperature.
• The "EcoSmart" function can be resumed by pressing button no. 4. If the regime has already been recorded (if the recording was not interrupted), the regime will begin running and the green control light 3 will light up. If the recording was interrupted, a new 7-day recording period will begin and the green control light 3 will again begin flashing.
• If the electronic regulator has recorded the regime but the user's hot water consumption habits have changed, a new recording period must be started. It can be started by holding button no. 4. The recording period lasts 7 days.

The Anti-Legionella Function

If the water in the heater does not reach 65 °C for 14 consecutive days, the anti-legionella function heats the water to 70 °C and maintains this temperature for 120 minutes.

Indication of errors

In case of error, control lights start to flash on the display 1.

Error Error description Signalization Solution
E1 • Temperature sensor error		• Repeated 2x quick pulse of the control light on the display 1.	• Call service (heater out of order).
E5	• Overheating (temperature>90 °C)	• Repeated 3x quick pulse of the control light on the display 1.	• The error is automatically deleted when the temperature drops below the set value.• Should the error repeat, please call the service company.
E44 • Dry start		• Repeated 4x quick pulse of the control light on the display 1.	• Fill the heater with water.• The error is deleted by switching off the heater or by holding button 2 for 3 seconds.

Emptying the heater

If you are planning to unplug the heater from power supply, please drain out all the water to prevent freezing. Water can be drained from the heater through the boiler inlet pipe. For this purpose it is advisable to install a T-element with an outlet valve between the inlet pipe and safety valve. Before draining, please unplug the heater from the power supply, open the warm water handle on the mixing tap and drain the warm water. When the water in the heater is cooled, close the flow of cold water into the heater and unscrew the flexible pipe on the warm water outlet. The heater can now be drained through the outlet valve on the inlet pipe. After draining the water through the inlet pipe, a small quantity of water remains in the heater. When refilling the heater with water it is recommended to open the warm water tap on the mixing tap and let the water run for at least two minutes through the outlet pipe (the water stream should be steady, medium strength, about as thick as a pencil).

MAINTENANCE

Clean the exterior of the heater using a soft cloth and mild detergent intended for cleaning smooth varnished surfaces. Do not use detergents that contain alcohol or abrasives.

With regular service inspections you will ensure faultless functioning and long life of the heater. Tank corrosion warranty applies only if all the prescribed regular inspections of the protective anode wear have been made. The period between regular inspections should not be longer than stated in the warranty certificate. Inspections should be carried out by authorised service providers that will record each inspection on the warranty statement of the product. Upon inspection the service provider will inspect the amount of wear on the anti-corrosion anode and, if necessary, clean the limescale that accumulates depending on the quality, quantity and temperature of the water inside the heater. The service provider will also recommend the date for the next inspection depending on the condition of the heater.

Please do not attempt to fix any defects of the heater by yourself. Call the nearest authorised service company.

Our products incorporate components that are both environmentally safe and harmless to health, so they can be disassembled as easily as possible and recycled once they reach their final life stage.

Recycling of materials reduces the quantity of waste and the need for production of raw materials (e.g. metals) which requires a substantial amount of energy and causes release of harmful substances. Recycling procedures reduce the consumption of natural resources, as the waste parts made of plastic and metal can be returned to various production processes.

For more information on waste disposal, please visit your waste collection centre or the store where the product was purchased

TECHNICAL PROPERTIES OF THE APPLIANCE

Type		GBF50 E5	GBF80 E5	GBF100 E5	GBF120 E5	GBF150 E5
Declared load profile M M L L XL
Energy efficiency class 1)		B B C C C
Water heating energy efficiency (ηwh) 1)	[%] 39,2	39,1 40 39,5 40
Annual electricity consumption 1)	[kWh] 1309	1313 2542	2593	4179
Daily electricity consumption 2)	[kWh]	6,985	7,251	13,568	13,931	21,670
Thermostat temperature settings				ECO
Value of "smart" 3)		1	1	1	1	1
Weekly electricity consumption with smart control	[kWh]	24,953	28,391	51,286	52,514	89,251
Weekly electricity consumption without smart control	[kWh]	29,071	34,226	60,245	61,737	101,722
Volume	[l]	47,0	76,1	96,1	116,4	145,5
Quantity of mixed water at 40 °C V40 2)	[l]	66	116	137	172	213
Rated pressure	[MPa (bar)]		0,6 (6) / 0,9 (9) / 1,0 (10)
Weight / Filled with water	[kg]	24/74	30/110	34/134	41/161	50/200
Anti-corrosion of tank enamelled / Mg Anode		• / •	• / •	• / • • / •	• / •
Overheating protection		•	•	•	•	•
Dry start protection		•	•	•	•	•
Power of electrical heater	[W]			2000
Number and power of heating elements	[W]			2 x 1000
Voltage	[V~]			230
Protection class				1
Degree of protection				IP24
Heating time from 10 °C to 65 °C	[h] 1	38	2 37	3 16	3 55	4 54
Packaging dimensions	[mm]	480 x 490 x 615	480 x 490 x 835	480 x 490 x 980	480 x 490 x 1135	480 x 490 x 1350

The data in the table apply to vertically mounted heaters.
^1) EU Regulation 812/2013; EN 50440
2) EN 50440
^3) Information on water heating energy efficiency and annual electricity consumption relate to enabled smart control settings only.

WE RESERVE THE RIGHT TO MAKE CHANGES THAT DO NOT IMPAIR THE FUNCTIONALITY OF THE DEVICE.

The user manual can also be found at our website http://www.gorenje.com.

FIGYELEM

Technical line drawing of a circular mechanical component with concentric rings and mounting holes (no text or symbols)

Diagram of a circular device with concentric rings and control knobs, no text or symbols present

graph TD
    A["Container Tank"] --> B["T"]
    A --> C["H"]
    B --> D["Valve 9"]
    C --> E["Valve 8"]
    D --> F["Directional Arrow"]
    E --> G["Directional Arrow"]
    F --> H["Downward Arrow"]
    G --> I["Downward Arrow"]

Top-down schematic of a circular device with concentric rings and control knobs (no text or symbols)

ZACHOWUJEMY PRAWO DO ZMIAN, KTÓRE NIE WPŁYWAJĄ NA FUNKCJONALNOŚĆ.

graph TD
    A["Container Tank"] --> B["T"]
    A --> C["H"]
    B --> D["Valve 9"]
    C --> E["Valve 8"]
    D --> F["Directional Arrow"]
    E --> G["Directional Arrow"]
    F --> H["Downward Arrow"]
    G --> I["Downward Arrow"]

Fig. 4: Sistemul deschis (nepresurizat)

LEGENDĂ

Technical line drawing of a circular electronic device with labeled ports and a handle (no text or symbols)

graph TD
    A["Container Tank"] --> B["T"]
    A --> C["H"]
    B --> D["Valve 9"]
    C --> E["Valve 8"]
    D --> F["Directional Arrow"]
    E --> G["Directional Arrow"]
    F --> H["Downward Arrow"]
    G --> I["Downward Arrow"]

Line drawing of a circular electronic device with a handle and control panel (no text or symbols)

graph TD
    A["Container Tank"] --> B["T"]
    A --> C["H"]
    B --> D["Valve 9"]
    C --> E["Valve 8"]
    D --> F["Directional Arrow"]
    E --> G["Directional Arrow"]
    F --> H["Downward Arrow"]
    G --> I["Downward Arrow"]

Technical line drawing of a circular mechanical component with concentric rings and mounting holes (no text or symbols)

graph TD
    A["Container Tank"] --> B["T"]
    A --> C["H"]
    B --> D["Valve 9"]
    C --> E["Valve 8"]
    D --> F["Directional Arrow"]
    E --> G["Directional Arrow"]
    F --> H["Downward Arrow"]
    G --> I["Downward Arrow"]

Fig. 4: Sistemi i hapur (pa presion)

LEGJENDA

Technical line drawing of a circular mechanical component with mounting holes and a central knob (no text or symbols)

Fig. 6: Skema e lidhjes elektrike

LEGJENDA