OTGS80SMC6 - Chauffe-eau instantané et chauffe-eau GORENJE - Free user manual and instructions

Product Type	Electric Storage Water Heater
Model	Gorenje OTGS80SMC6 (OTGS 80 E5)
Volume	78.8 liters
Dimensions (H x W x D)	950 mm x 490 mm x 480 mm (approx.)
Weight (empty / filled)	31 kg / 111 kg
Rated Pressure	0.6 / 0.9 / 1.0 MPa (6/9/10 bar)
Heating Power	2000 W
Voltage	230 V~
Protection Class	I
Ingress Protection	IP24
Energy Efficiency Class	B
Control Panel	Digital display with On/Off button and temperature & EcoSmart controls
EcoSmart Function	7-day learning mode to optimize energy consumption based on usage habits
Anti-Legionella Function	Heats water to 70°C for 120 minutes if not reached 65°C for 14 days
Safety Features	Overheating protection (thermal cut-out), dry start protection, safety valve required
Temperature Settings	Freeze protection (10°C), 35°C, eco (57°C), 75°C
Installation	Vertical wall-mounting; requires qualified personnel; safety valve and expansion tank recommended
Maintenance	Annual inspection of anti-corrosion anode; descaling as needed; clean exterior with soft cloth
Digital Display	Shows set/actual temperature and error codes

Frequently Asked Questions - OTGS80SMC6 GORENJE

How do I install the OTGS80SMC6 water heater?

Installation must be performed by qualified personnel according to local regulations. The heater must be mounted vertically on a wall with screws of at least 8 mm diameter. A safety valve (rated 0.6/0.9/1.0 MPa) must be installed on the cold water inlet. Do not place a shut-off valve between the heater and the safety valve. The heater must be filled with water before connecting to electrical power.

What does the safety valve do and how do I maintain it?

The safety valve prevents pressure from exceeding 0.1 MPa (1 bar) above the rated pressure. It may drip water during heating; this is normal. The valve should be operated periodically to remove limescale and ensure it is not blocked. The outlet must be piped downwards and kept in a frost-free environment.

How do I set the temperature on the heater?

Press button 2 repeatedly to cycle through temperature levels: * (freeze protection, ~10°C), 35°C (light), eco (57°C), and ### (75°C). The display shows the current set temperature. The recommended setting for energy efficiency is the 'eco' mode at 57°C.

What is EcoSmart and how do I use it?

EcoSmart is a smart mode that learns your hot water usage patterns over 7 days and heats water accordingly to save energy. To activate, press button 4. The green light flashes during the learning period. After 7 days, it lights continuously when operating in smart mode. Press button 4 again to deactivate.

How do I clean the water heater?

Clean the exterior with a soft cloth and mild detergent suitable for varnished surfaces. Do not use alcohol-based or abrasive cleaners. Interior maintenance (e.g., descaling, anode inspection) must be carried out by an authorized service provider at least as often as specified in the warranty.

What do the error codes mean and how do I fix them?

E1 (temperature sensor error) – repeated 2 fast pulses; call service. E5 (overheating >90°C) – 3 fast pulses; resets automatically when temperature drops; if repeats, call service. E44 (dry start) – 4 fast pulses; fill heater with water and hold On/Off button for 3 seconds to clear.

How do I drain the water heater?

Disconnect the heater from power supply. Open the hot water tap to release pressure and drain warm water. Close the cold water supply, then unscrew the hot water outlet pipe. Water will drain through the inlet pipe if a T-fitting with an outlet valve is installed. Note that a small amount of water remains; when refilling, run hot water for at least 2 minutes to purge air.

How often should the anode be inspected?

The anti-corrosion magnesium anode should be inspected at intervals specified in the warranty certificate (typically annually). Inspections must be performed by an authorized service provider, who will record the check and replace the anode if necessary. Regular inspection is required for the tank corrosion warranty to remain valid.

Can children use the water heater?

Children aged 8 years and older may use the heater if supervised and instructed on safe operation. Children should not play with the appliance or perform cleaning/maintenance without supervision.

What is the energy efficiency of the OTGS80SMC6?

This model (80L) has energy efficiency class B with water heating efficiency of 39.6%. Annual electricity consumption is 1296 kWh. Using the EcoSmart function can reduce weekly consumption from 30.049 kWh to 25.564 kWh.

USER MANUAL OTGS80SMC6 GORENJE

White gas water heater with digital display and red connectors (no visible text or symbols)

OTGS 30-120 E5

Instructions for Use 22

Line drawing of a portable water heater with control panel and indicator lights (no text or symbols)

Line drawing of a portable water heater with control panel and 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 from the heater is drained through the inlet pipe of the tank. For this purpose, a special fitting (T-fitting) with an outlet valve must be mounted between the safety valve and the inlet pipe.

⚠️ Please do not try to fix any defects of the water heater on your own. Call the nearest authorised service provider.

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.

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. The water heater may only be fixed upon the wall vertically. To facilitate future service interventions, you are advised to install the heater in accordance with the installation measurements (see Fig. 1).

A B C G
OTGS 30 E5	510	310	235	180
OTGS 50 E5	690	470	250	260
OTGS 80 E5	950	735	245	360
OTGS 100 E5	1125	900	255	510
OTGS 120 E5	1300	900	430	510

Connection and installation dimensions of the water heater [mm]
Fig. 1: Vertical installation on a wall

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. 2) 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. 3) 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
    1["Component 1"] -->|T| A["Valve"]
    A --> B["2"]
    B --> C["3"]
    C --> D["4"]
    D --> E["Valve"]
    E --> F["a"]
    F --> G["b"]
    G --> H["5"]
    H --> I["6"]
    I --> J["7"]
    J --> K["H"]

Fig. 2: Closed (pressure) system

graph TD
    A["Container Tank"] --> B["T"]
    A --> C["H"]
    B --> D["Control Unit 9"]
    C --> D
    D --> E["Valve 8"]
    D --> F["Valve 7"]

Fig. 3: 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

Line drawing of a portable water heater with control panel and indicator lights (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 mm ^2 ). 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. 4: Removing the protective cover

Legend:

1 - Connection terminal
2 - Thermal cut-out
3 - Electronic regulator
4 - Electric heating element
5 - Temperature sensor

L - Live conductor

N - Neutral conductor

÷ - Earthing conductor

Fig. 5: Electric installation

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. 6: 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 button for about 3 seconds. By holding the 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 "\\\$" is achieved, pressing the button returns the temperature to the first setting "*. We recommend the "eco" setting. This setting is the most energy-efficient. The temperature of water is about 57 °C, 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^ .

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 display1	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 display1	Fill the heater with water. The error is deleted by switching off the heater or by holding button 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 from the heater is drained through the inlet pipe of the heater. 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.

TECHNICAL PROPERTIES OF THE APPLIANCE

Type		OTGS 30 E5	OTGS 50 E5	OTGS 80 E5	OTGS 100 E5	OTGS 120 E5
Declared load profile		S	M	M	L	L
Energy efficiency class 1)		B	B	B	C	C
Water heating energy efficiency (ηwh) 1)	[%]	37,2	40	39,6	40	40
Annual electricity consumption 1)	[kWh]	496	1282	1296	2480	2554
Daily electricity consumption 2)	[kWh]	2,864	6,870	6,956	13,003	13,214
Thermostat temperature settings		"eco"
Value of "smart" 3)		1	1	1	1	1
Weekly electricity consumption with smart control	[kWh]	13,055	24,198	25,564	49,740	51,611
Weekly electricity consumption without smart control	[kWh]	16,215	28,501	30,049	57,832	58,689
Volume	[l]	29,1	49,1	78,8	98,1	118,9
Quantity of mixed water at 40 °CV40 2)	[l]	-	68	121	142	177
Rated pressure	[MPa(bar)]	0,6 (6) / 0,9 (9) / 1,0 (10)
Weight / Filled with water	[kg]	19/49	24/74	31/111	36/136	41/161
Anti-corrosion of tank enamelled / Mg Anode		• / •	• / •	• / •	• / •	• / •
Overheating protection		•	•	•	•	•
Dry start protection		•	•	•	•	•
Power of electrical heater	[W]	2000
Voltage	[V~]	230
Protection class		I
Degree of protection		IP24
Heating time from 10 °C to 65 °C	[h]	0 59 1	38 2	37 3	16	3 55
Packaging dimensions	[mm]	480x490 x630	480x490 x810	480x490 x1070	480x490 x1245	480x490 x1420

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

Line drawing of a portable water heater with control panel and indicator lights (no text or symbols)

Line drawing of a portable water heater with control panel and indicator lights (no text or symbols)

Line drawing of a portable water heater with control panel and buttons (no text or symbols)

ZACHOWUJEMY PRAWO DO ZMIAN, KTÓRE NIE WPŁYWAJĄ NA FUNKCJONALNOŚĆ.

Line drawing of a portable water heater with control panel and buttons (no text or symbols)

Line drawing of a portable water heater with control panel and indicator lights (no text or symbols)

Line drawing of a portable water heater with control panel and buttons (no text or symbols)

Line drawing of a portable water heater with control panel and buttons (no text or symbols)