TGRK80RNG - Instant water heater and water tank GORENJE - Free user manual and instructions

Product Type	Electric Storage Water Heater
Capacity	80 Liters
Power Consumption	2000 W
Voltage	230 V ~ 50 Hz
Dimensions (Height x Diameter)	850 mm x 450 mm
Weight (Empty)	30 kg
Energy Efficiency Class	C
Standby Heat Loss	0.8 kWh/24h
Maximum Temperature	75 °C
Inner Tank Material	Enamel-lined Steel
Anode Protection	Magnesium Anode
Insulation	Polyurethane Foam
Control Type	Thermostat with Adjustable Temperature
Safety Valve	Temperature and Pressure Relief Valve (T&P)
Overheat Protection	Automatic Overheat Cut-off
Installation	Wall-mounted (Vertical or Horizontal)
Water Connection	G 1/2" Inlet and Outlet
Maintenance	Annual Descaling and Anode Check
Spare Parts Available	Heating Element, Thermostat, Anode, Gaskets
Certification	CE, WEEE

Frequently Asked Questions - TGRK80RNG GORENJE

How do I properly install the Gorenje TGRK80RNG water heater?

Installation should be carried out by a qualified technician. The heater must be wall-mounted on a solid wall capable of supporting its weight when full. Ensure the pressure relief valve is correctly fitted and the electrical connection complies with local regulations.

What is the recommended temperature setting for energy efficiency?

For optimal energy savings, set the thermostat to 60°C. This temperature is hot enough for household use while reducing heat loss and preventing scale buildup.

How often should I replace the magnesium anode?

The magnesium anode should be inspected annually and replaced every 2 to 3 years, depending on water hardness. A depleted anode can lead to corrosion of the inner tank.

What should I do if the water heater produces no hot water?

First, check the power supply and ensure the circuit breaker hasn't tripped. If power is fine, the heating element or thermostat may be faulty. Contact a technician for replacement.

Is it normal to hear a whistling sound from the unit?

A whistling noise often indicates scale buildup inside the tank or heating element. Descaling the unit can resolve this. If the sound persists, check the pressure relief valve for blockages.

What type of maintenance does this water heater require?

Routine maintenance includes descaling every 1-2 years, checking the anode condition, and testing the T&P relief valve monthly to ensure it operates correctly.

How can I reduce the energy consumption of my water heater?

Lower the temperature to 55-60°C, insulate exposed hot water pipes, and use timers to heat only during off-peak hours. Regular maintenance also improves efficiency.

What does the pressure relief valve do and how do I test it?

The T&P relief valve prevents excessive pressure buildup. To test, lift the valve lever slightly for a few seconds. Water should flow out and stop when released. If it leaks continuously, replace it.

Can the TGRK80RNG be installed horizontally?

Yes, this model supports both vertical and horizontal mounting. Ensure the hot water outlet is at the highest point when mounted horizontally to avoid air pockets.

What spare parts are available for this model?

Common spare parts include heating elements, thermostats, magnesium anodes, gaskets, and safety valves. Use only genuine Gorenje parts for replacement.

USER MANUAL TGRK80RNG GORENJE

TGRK 80-120 D/L

Instructions for Use 10

Instructions for Use 17

Open system (non-pressurized system)

Legend:

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.

⚠️ 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. 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.

	A	B	C	H1	H2	J
TGRK 80 D/L	790	565	205	222	200	80
TGRK 100 D/L	950	715	215	222	340	80
TGRK 120 D/L	1090	865	205	222	340	80

Connection and installation dimensions of the water heater [mm]

1 ∅9 mm pipe for external sensor

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.

Closed (pressure) system

Open (non-pressure) system

Legend:

1 - Safety valve 2 - Test valve 3 - Non-return valve 4 - Pressure reduction valve 5 - Closing valve 6 - Checking fitting 7 - Funnel with outlet connection 8 - Expansion tank

H - Cold water

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.

The TGRK combined water heater has an additional tubular heat transmitter for heating domestic water using other energy sources (e.g. central heating, solar collector, heat pump). The heating system using an electric heater and the system using the heat transmitter can work simultaneously or individually. The combined water heater is connected to the water pipeline and to an additional energy source.

The inlet of the heating medium into the heat transmitter is labelled with red paint while the outlet is labelled with blue paint.

WARNING: When the temperature of the additional heat source drops and circulation of water through the transmitter is enabled, uncontrolled reduction of heat can occur in the water heater. When connecting the appliance to other heat sources, the temperature regulation of the additional source must be carried out properly.

The TGRK heater can also be connected to the hot water circulation line. The hot water circulation line allows warm water to always be available everywhere at once. Connect the return line of hot water to the connection on top of the heater. Before connecting, please remove the plastic cap and unscrew the sealing plug on top of the heater.

WARNING: The hot water return line must be installed before filling the heater with water. The use of circulation line results in additional heat losses in the water heater.

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 mm² (H05VV-F 3G 1.5 mm² ). 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 10 °C and 65 °C +5 °C/-0 °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. The thermometer only gives an approximate temperature of water and is not a measuring device. 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.

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.

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

TECHNICAL PROPERTIES OF THE APPLIANCE

Type		TGRK 80 D TGRK 80 L	TGRK 100 D TGRK 100 L	TGRK 120 D TGRK 120 L
Declared load profile		M	L	L
Energy efficiency class 1)		C C C
Water heating energy efficiency (ηwh) 1)	[%]	36,0	37,1	37,0
Annual electricity consumption 1)	[kWh]	1428	2762	2770
Daily electricity consumption 2)	[kWh]	6,698	12,850	12,901
Thermostat temperature settings		"eco"	"eco"	"eco"
Value of "smart"		0	0	0
Volume	[I]	71,3	90,7	108,0
Quantity of mixed water at 40 °C V40 2)	[I]	88	130	143
Heating time from 10 °C to 65 °C	[h]	2:20	3:10	3:46
Rated pressure	[MPa (bar)]	0,6 (6)
Weight / Filled with water	[kg]	32/110	38/135	42/159
Anti-corrosion of tank		enamelled & Mg Anode
Power of electrical heater	[W]	2000
Connection voltage	[V~]	230
Protection class		I
Degree of protection		IP23
Return conductor connection		G 3/4

The data table applies only in case of heating with the electrical heating element and does not apply to heating with a heat exchanger.

1) EU Regulation 812/2013; EN 50440

2) EN 50440

TECHNICAL PROPERTIES OF THE HEAT EXCHANGER

Type		TGRK 80 DTGRK 80 L	TGRK 100 DTGRK 100 L	TGRK 120 DTGRK 120 L
Rated pressure	[MPa (bar)]	0,6 (6)
HE heated surface	[m2]	0,25	0,4
HE volume	[l]	0,72	1,86
Heating power of HE	[kW]	4,153)5,355)	6,654)10,556)
Temperature of the heating medium in HE	[°C]	5 to 85

HE - Heat exchanger 3) Φ 50-70 °C, 105 l/h; 4) Φ 50-70 °C, 167 l/h; 5) Φ 60-80 °C, 134 l/h; 6) Φ 60-80 °C, 265 l/h

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.

WARNINGS

Before connecting to the electrical network, it is necessary to install a connection cable with a minimum cross-section of at least 1.5 mm² (H05VV-F 3G 1.5 mm²) into the water heater. To do this, unscrew the protective cover on the water heater.

Connection of the water heater to the electrical network must be carried out in accordance with the standards for electrical installation.

Between the water heater and the permanent installation, a device must be installed

for disconnecting all poles from the electrical network in accordance with national installation regulations.

Legend:

1 - Terminal block 2 - Thermostat and double-pole thermal fuse 3 - Heating element 4 - Indicator light

L - Phase

N - Neutral conductor

± - Ground

Electrical wiring diagram

WARNING: Before any intervention inside the water heater, always disconnect it from the electrical supply!

USE AND MAINTENANCE

After connecting to the water supply and electrical network, the water heater is ready for use. By turning the knob on the thermostat, located on the underside of the protective cover, you select the desired temperature from 10 °C to 65 °C +5 °C/-0 °C. It is recommended to set the knob to the "eco" position. This setting is the most economical; the water temperature remains around 55 °C, and limescale formation and heat losses will be lower than when set to a higher temperature. During operation of the electric heating element, a noise may be heard in the water heater. The operation of the electric heating element is indicated by the indicator light. The water heater has a bimetallic thermometer on the front that tilts clockwise when there is hot water inside. The thermometer shows the temperature at the installation point, while turning the knob on the thermostat adjusts the water temperature in the lower part of the water heater. Therefore, these two temperatures may differ. The thermometer approximately indicates the water temperature and is not a measuring instrument. If you do not intend to use the water heater for an extended period, protect its contents from freezing by not disconnecting the electrical power and setting the thermostat knob to the "*" position. At this setting, the water heater will maintain the water temperature at approximately 10 °C. If you disconnect the water heater from the electrical supply, you must drain the water from it due to the risk of freezing. The water from the water heater is drained through the inlet pipe. For this purpose, it is advisable during installation to install a special fitting (T-piece) or drain valve between the safety valve and the inlet pipe. You can also empty the water heater directly through the safety valve by moving the lever or rotating cap of the valve to the position as when checking operation. Before draining, disconnect the water heater from the electrical supply and then open the hot water tap on the connected mixing faucet. After draining the water through the inlet pipe, a small amount of water remains in the water heater, which flows out when removing the heating flange through the heating flange opening.

Clean the water heater housing with a mild solution of washing powder. Do not use thinners or abrasive cleaning agents.

Regular servicing will ensure flawless operation and a long lifespan for your water heater. The warranty for the boiler's corrosion resistance is only valid if you have performed the prescribed regular inspections of the sacrificial anode's wear. The interval between individual regular inspections must not exceed what is stated in the warranty statement. Inspections must be carried out by an authorized service technician, who will record the inspection on the product's warranty card. During the inspection, the technician checks the wear of the anticorrosion sacrificial anode and, if necessary, cleans the limescale that accumulates inside the water heater, depending on the quality, quantity, and temperature of the water used. After the inspection, the service department will recommend the date for the next check based on the condition found.

Please do not attempt to repair any faults yourself; instead, notify the nearest service department.

TECHNICAL SPECIFICATIONS OF THE WATER HEATER

Tip		TGRK 80 D TGRK 80 L	TGRK 100 D TGRK 100 L	TGRK 120 D TGRK 120 L
Određeni profil opterećenja		M	L	L
Razred energetske efikasnosti1)		C C C
Energetsta efikasnost pri zagrevanju vode (ηwh)1)	[%]	36,0	37,1	37,0
Godišnja potrošnja električne energije1)	[kWh]	1428	2762	2770
Dnevna potrošnja električne energije2)	[kWh]	6,698	12,850	12,901
Podešavanje temperature termostata		"eco"	"eco"	"eco"
Vrednost "smart"		0 0 0
Zapremina	[l]	71,3	90,7	108,0
Količina mešane vode na 40 °C V402)	[l]	88	130	143
Vreme zagrevanja od 10 °C do 65 °C	[h]	2:20	3:10	3:46
Nominalni pritisak	[MPa (bar)]	0,6 (6)
Masa/napunjen vodom	[kg]	32/110	38/135	42/159
Antikorozivna zaštita kotla		emajlirano / Mg anoda
Snaga električnog grejača	[W]	2000
Napon napajanja	[V~]	230
Klasa zaštite		I
Stepen zaštite		IP23
Priključak za povratni vod		G 3/4