TGR50SNG - Chauffe-eau instantané et chauffe-eau GORENJE - Free user manual and instructions

Product Type	Gas instantaneous water heater
Brand	Gorenje
Model	TGR50SNG
Dimensions (H x W x D)	580 x 310 x 210 mm
Weight	10 kg
Power Supply	Natural gas (G20) at 20 mbar
Nominal Heat Input	20 kW
Hot Water Flow Rate (ΔT=25°C)	11.5 L/min
Ignition	Electronic ignition (battery or mains powered)
Safety Devices	Flame failure device, overheat protection, anti-freeze function
Temperature Setting	45°C to 65°C (adjustable)
Key Functions	Instantaneous hot water supply, low water pressure start (≥0.1 bar)
Maintenance	Annual inspection by qualified technician; clean water filter periodically
Spare Parts Availability	Spare parts available from Gorenje service centers; common parts include thermocouple, burner, water valve
Installation Requirements	Wall-mounted; flue gas exhaust to chimney or outside; gas connection by certified installer
Certification	CE, Gas Appliances Directive (2009/142/EC)
Warranty	2 years (subject to terms)

Frequently Asked Questions - TGR50SNG GORENJE

What is the gas type required for Gorenje TGR50SNG?

The Gorenje TGR50SNG is designed for natural gas (G20) at a supply pressure of 20 mbar. For LPG conversion, consult a qualified technician.

How do I ignite the water heater?

The heater uses electronic ignition. Turn on the gas supply and main power (or install batteries if applicable). Open a hot water tap; the burner should ignite automatically. If not, check batteries, gas supply, and that the flue is clear.

What does the flame failure device do?

The flame failure device automatically shuts off the gas supply if the flame goes out, preventing gas leaks. If the heater repeatedly shuts off, clean the thermocouple or contact service.

How do I adjust the water temperature?

Temperature is adjustable via a knob or digital control, typically ranging from 45°C to 65°C. Lower settings save gas; higher settings increase hot water output.

What maintenance is required?

Clean the water inlet filter every 6 months. Annually, have a qualified technician inspect the burner, heat exchanger, flue, and safety devices. Descale if water is hard.

Why is the water not hot enough?

Check that the gas supply is adequate and the temperature setting is high enough. Also ensure the water flow rate is within the heater's capacity (e.g., 11.5 L/min at ΔT=25°C). If multiple taps are open, flow may be too high.

Can I install the heater outdoors?

The Gorenje TGR50SNG is intended for indoor installation with proper flue venting. For outdoor use, a specific model is needed. Do not install in bathrooms or unventilated spaces.

What does the anti-freeze function do?

The anti-freeze function triggers the heater to run briefly when temperature drops near freezing, preventing water from freezing inside the unit. It requires continuous gas and power supply.

How long is the warranty?

The warranty is typically 2 years from the date of purchase, covering manufacturing defects. Register your product online for extended warranty options.

Where can I find spare parts?

Spare parts are available through Gorenke authorized service centers. Common parts like thermocouple, burner, and water valve can be ordered online or from local dealers. Always use genuine parts.

USER MANUAL TGR50SNG GORENJE

Instructions for Use 8

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 maintain the appliance without supervision.
The installation should be performed in accordance with the valid regulations and the instructions of the manufacturer. It should be performed by a professionally trained installation expert.
In a closed, pressurised system of installation, it is obligatory to install a safety valve with a rated pressure of 0.6 MPa (6 bar), 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 functioning of the safety valve!
Before connecting it to the power supply, the water heater must be filled with water!
In case of failure of the operating thermostat, the hot water tank is additionally protected with safety device, however, it is possible that the water temperature in the tank reaches up to 130 °C, in compliance with safety standards. When connecting to water supply, take into account eventual thermal overload.
Water can be drained from the water heater through the boiler inlet pipe. For this purpose it is advisable to install a special element or 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. The technical characteristics of the product are listed on the label affixed between the inlet and outlet 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. We recommend the distance between the water heater and the ceiling is large enough to allow simple replacement of the Mg anode (see dimension G in the Installation Drawing), in order to avoid unnecessary dismounting of the heater during the servicing intervention.

TECHNICAL PROPERTIES OF THE APPLIANCE

Type		TGR 30 S	TGR 50 S	TGR 65 S	TGR 80 S
Volume	[l]	30	50	65	80
Rated pressure	[MPa (bar)]	0,6 (6)
Weight / Filled with water	[kg]	20/50	24/74	27/92	30/110
Anti-corrosion of tank		enamelled & Mg Anode
Power of electrical heater	[W]	2000
Connection voltage	[V~]	230
Protection class		I
Degree of protection		IP23
Duration of heating to 65 °C1)	[h]	059	138	207	237
Quantity of mixed water at 40 °C	[l]	55	89	124	154
Energy consumption2)	[kWh/24h]	1,00	1,45	1,75	1,85

1) Time for heating the whole content of heater if the initial temperature of cold water from water supply is 10 °C .

2) Energy consumption to maintain the temperature of water in the water heater at 65 °C if the surrounding temperature is 20 °C , measured according to EN 60379.

A B C G
TGR 30 S	615	410	180	80
TGR 50 S	915	710	180	100
TGR 65 S	1135	930	180	130
TGR 80 S	1310	930	355	130

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.

The open-circuit gravity system requires the installation of a non-return valve in order to prevent the water from draining out of the tank in the event of the water supply running dry or being shut down. This installation mode requires the use of a cross-flow mixer 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.

The closed-circuit pressure system requires the use of pressure mixer taps. For safety reasons the supply pipe must be fitted with a safety valve or alternatively, a valve of the safety class that prevents the pressure in the tank from exceeding the nominal pressure by more than 0.1 MPa (1 bar). The outlet opening on the relief 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.

In case the existing plumbing does not enable you to pipe the dripping water from the safety valve into the drain, you can avoid the dripping by installing a 3-litre expansion tank on the inlet water pipe of the boiler.

In order to provide correct operation of the safety valve, periodical inspections of the relief valve must be carried out by the user to eliminate any limescale and check if the safety valve is 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.

graph LR
    A["Top Tank"] --> B["Valve"]
    B --> C["Reactor Unit"]
    C --> D["Flow Indicator 1"]
    C --> E["Flow Indicator 2"]
    C --> F["Flow Indicator 3"]
    C --> G["Flow Indicator 4"]
    C --> H["Flow Indicator 5"]
    C --> I["Flow Indicator 6"]
    C --> J["Flow Indicator 7"]
    C --> K["Turbeter T"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#cfc,stroke:#333
    style H fill:#fcc,stroke:#333
    style I fill:#ffc,stroke:#333
    style J fill:#fcc,stroke:#333

Closed (pressure) system

graph TD
    A["Top Tank"] --> B["Valve T"]
    B --> C["Valve H"]
    C --> D["Control Valve 3"]
    D --> E["Valve T"]
    E --> F["Control Valve 5"]
    style A fill:#f9f,stroke:#333
    style F fill:#ccf,stroke:#333

Open (non-pressure) system

Legend:

1 - Safety valve

6 - Checking fitting

2 - Test valve

7 - Funnel with outlet connection

3 - Non-return valve

8 - Expansion tank

4 - Pressure reduction valve

H - Cold water

5 - Closing valve

T - Hot water

Between the water heater and safety valve, no closing valve may be built in because it could impede the function of the safety valve.

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

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.

Connecting the heater to the power supply network must take place in accordance with the standards for electric appliances. To comply with the national installation regulations, an all poles disconnect switch must be installed between the water heater and the power supply network.

Legend:

1 - Connection terminal
2 - Thermostat and bipolar thermal cut-out
3 - Electric heating element
4 - Pilot lamp

L - Live conductor

N - Neutral conductor

± - Earthing conductor

Electric installation

CAUTION: Before any intervention into the interior of the water heater,

disconnect it from the power supply network!

After connecting to the water and power supply, the heater is ready for use. By turning the thermostat knob, water temperature can be set between 25 °C and 70 °C. We recommend that the knob be set to the position "eco" ensuring the most economic operation of the water heater. This way, the water temperature is maintained at 55 °C while the operation also results in less lime sediment as well as in less heat losses than is the case at higher temperatures. During the operation of an electric heater can hear noise in the water heater. The light indicator shows the operation of the heating element. On the casing of the water heater a bimetal thermometer is mounted, pointing clockwise (to the right) whenever there is hot water in the water heater. The thermometer shows the temperature at the place of installation, while the control knob on the thermostat sets the temperature of water in the bottom part of the heater. As a result these two temperatures may differ. When the water heater is not in use for longer periods of time, it should be protected from freezing by setting the temperature to "*". Do not disconnect the power. Thus the temperature of water is maintained at about 10 °C. Should you choose to disconnect the power, the water heater should be thoroughly drained before the onset of freezing conditions. Water from the heater is drained through the inlet pipe of the heater. For this purpose, a special fitting (T-fitting) must be mounted between the relief valve and the heater inlet pipe, or a discharge tap. The heater can be discharged directly through the relief valve, by rotating the handle or the rotating valve cap to the same position as for checking the operation. Before discharge, make sure the heater is disconnected from the power supply, and open the hot water on the connected mixer tap. After discharging through the inlet pipe, there is still some water left in the water heater. The remaining water will be discharged after removing the heating flange, through the heating flange opening.

The external parts of the water heater can be cleaned with a mild detergent solution. Do not use solvents and abrasives.

Regular preventive maintenance inspections ensure faultless performance and long life of your heater. The first of these inspections should be carried out by the authorised maintenance service provider about three years from installation in order to inspect the wear of the protective anticorrosion anode and remove the lime coating and sediment as required. The lime coating and sediment on the walls of the tank and on the heating element is a result of quality, quantity and temperature of water flowing through the water heater. The maintenance service provider shall also issue a condition report and recommend the approximate date of the next inspection.

Never try to repair any possible faults of the water heater by yourself, but inform about it the nearest authorised service workshop.

HINWEISE!