GBK80LN - Air-conditioner GORENJE - Free user manual and instructions

Product Type	Electric Water Heater (Combined with Heat Exchanger)
Model	GBK80LN
Volume	80 L
Rated Pressure	0.6 MPa
Weight (Empty/Filled)	51 kg / 131 kg
Power of Electrical Heater	2000 W
Connection Voltage	230 V~
Protection Class	I
Degree of Protection	IP 25
Heating Time to 75°C	3 h 05 min
Quantity of Mixed Water at 40°C	151 L
Energy Consumption (24h at 65°C)	1.39 kWh/24h
Anti-Corrosion Protection	Enamelled & Mg Anode
Dimensions (A x B x C)	803 x 207 x 345 mm
Diameter	500 mm
Water Connections	G 1/2 (inlet/outlet), G 3/4 (return pipe)
Heat Exchanger Surface (for GBK models)	0.72 m²
Max. Inlet Temperature of Heating Medium	85°C
Heat Flow of Transmitter	14400 W
Installation	Wall-mounted, upright position only
Safety Valve Included	Yes, return safety valve required
Warranty	Refer to authorized service workshop

Frequently Asked Questions - GBK80LN GORENJE

How do I connect the water heater to the water supply?

Connect cold water (blue mark) to inlet and hot water (red mark) to outlet. Use either a closed pressure system (multiple outlets) or open non-pressure system (single outlet). Install a safety valve on the supply pipe to prevent backflow. For pressure systems, use a pressure mixing tap; for non-pressure, use a cross-flow mixing tap.

What is the difference between GBK and GBL models?

GBK models (like GBK80LN) include a built-in heat exchanger for connecting to an external energy source (e.g., central heating, solar). GBL models are purely electric. Both have similar electrical heating elements but GBK allows dual heating.

How do I set the temperature?

Turn the thermostat knob on the front cover to desired temperature between 25°C and 75°C. For economy, set to position 'E' (approx. 55°C) to reduce lime scale and heat loss.

How often should I check the safety valve?

Check the return safety valve every 14 days. Open the test valve (handle or nut) and ensure water flows out. If not, the valve may be faulty.

What is the anti-corrosion protection and how does it work?

The tank is enamelled and equipped with a magnesium anode. The anode sacrifices itself to protect the tank from corrosion. It should be checked by an authorized service workshop after about two years.

Can I mount the water heater horizontally?

No, the GBK80LN must be mounted upright on the wall. Only GBL 50 and GBL 80 models can be mounted horizontally on the ceiling. Wall or floor mounting is not allowed.

How do I drain the water heater?

Disconnect from power, open hot water taps, then drain through the inlet connection. Use a drain valve between inlet and safety valve if available. Alternatively, set the safety valve lever to 'Test' position. Some residual water may remain; you can remove the heating flange to drain completely.

What should I do if the heater is not used for a long time?

To prevent freezing, leave the power on and set thermostat to '*' (about 10°C). If you must disconnect power, drain the water completely to avoid freeze damage.

Where can I find the technical specifications?

The nameplate with basic technical properties is located between the connection pipes. Detailed specifications like volume, pressure, weight, dimensions, and energy consumption are listed in the manual's technical characteristics table.

How do I clean the water heater exterior?

Use a mild detergent solution with a soft cloth. Avoid solvents or abrasive cleaners. Do not use rough cleaning tools.

USER MANUAL GBK80LN GORENJE

White cylindrical water heater with a small dial indicator and control panel (no visible text or symbols on the body)

Exterior view of a cylindrical metallic battery casing with mounting brackets (no text or symbols visible)

GBL

Instructions for Use 15

Upute za upotrebu 19

Návod k obsluze 23

Dear customer, we thank you for purchasing our product.

PLEASE READ THE INSTRUCTIONS THOROUGHLY PRIOR TO THE INSTALLATION AND FIRST OPERATION OF THE WATER HEATER.

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 PERSON RESPONSIBLE FOR THEIR SAFETY.

CHILDREN SHOULD BE SUPERVISED TO ENSURE THAT THEY DO NOT PLAY WITH THE APPLIANCE.

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 basic technical properties are stated upon the nameplate, glued between the connection pipes. The water heater may be connected to water and electric power supply only by a qualified specialist. The reach in its inside due to the repair or removal of limestone and checking and replacement of anti-corrosion protection anode may be performed only by an authorised service workshop.

INSTALLATION

The water heater shall be built as close as possible to the outlets. It has to be fitted to the wall using appropriate rag bolts with minimum diameter of 8 mm. In case the wall in question cannot support the weight three times that of the water heater filled with water, the relevant section of the wall where the heater is to be installed, must be suitably reinforced. GBK water heater must be mounted to the wall in the upright position. Only GBL 50 and GRL 80 models may be mounted horizontally to the ceiling. These water heaters may not be wall- or floor-mounted as this could damage the heaters.

TECHNICAL CHARACTERISTICS OF WATER HEATER

Type	GBL 50 GBL 80 GBK 80 L/D GBK 100 L/D GBK 120 L/D GBK 150 L/D GBK 200 L/D
Model	GBL 50 N	GBL 80 N	GBK 80 LN/RN	GBK 100 LN/RN	GBK 120 LN/RN	GBK 150 LN/RN	GBK 200 LN/RN
Volume [l]	50	80	80	100	120	150	200
Rated pressure [MPa]	0,6
Weight / Filled with water [kg]	27/77	33/113	51/131	56/156	62/182	72/222	90/290
Anti-corrosion protection of tank	Emailed & Mg Anode
Power of electrical heater [W]	2000
Connection voltage [V~]	230
Protection class	I
Degree of protection	IP 25
Heating time to 75°C ^1) [h]	1^55	3^05	3^05	3^55	4^35	5^45	7^40
Quantity of mixed water at 40° [l]	80	117	151	189	226	276	360
Energy consumption [kWh/24h]	1,20	1,46	1,39	1,58	1,77	2,05	2,50

1) Time required for the electric heating element to heat the entire tank volume, at the water supply temperature of 15°C.

2) Power consumption required for the temperature of water in the water heater to be maintained at 65^ C, at the room temperature of 20^ C, measured in accordance with the DIN 44532 standard.

		GBK 80 L/D	GBK100 L/D	GBK	120 L/D	GBK 150	L/D	GBK 200 L/D
Nominal pressure	[MPa]	0,6
Max. inlet temperature of heating medium	[°C]	85
Surface of transmitter	[m2]	0,72	0,88
Heat flow of heat transmitter^3)	[W]	14400	17600

3) Heating medium: inlet temperature 70°C, flow 3000 l/h.

Sanitary water: inlet temperature 10°C, outlet temperature 45°C, flow 437 l/h.

	GBL 50 G	BL 80 GBK 8	0 GBK 100 GB	BK 120 GBK	150 GBK 200
A 58	3 803 803 9	48 1103 13	8 1510
B 18	7 207 207 2	202 207 222	430
C 14	5 345 565 7	15 865 106	5 1050
D			340	416	416	416	416

Connection and installation dimensions [mm].

GBK 80 - 200

GBL 50-80

CONNECTION TO THE WATER SUPPLY SYSTEM

Inlet and outlet of water are on the water heater pipes marked with colour. The supply of cold water is marked with blue, the outlet of warm water is marked with red.

The water heater can be connected to the water supply in two manners. Closed pressure system of connection enables the outlet of water on several outlet spots, non-pressure system enables only one outlet point. With regard to the system of

connection chosen, also the suitable mixing taps must be purchased. By open non-pressure system it must before the water heater a safety valve be built-in preventing the running of water of the tank if in the network the water runs short. By this system of connection, the cross-flow mixing tap must be used. In the water heater, due to the heating the volume of water is increasing, which causes the dropping of water of the mixing tap pipe. By strong squeezing of knob of the mixing tap the dropping of water can not be prevented, but the mixing tap can only be damaged. By closed pressure system of connection on the outlet spots the pressure mixing tap must be used. For safety reasons the supply pipe must be fitted with a return 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.

By heating of water in the water heater the pressure of water in the tank is increasing to the limit which is adjusted in the safety valve. Because the return of water back to the water supply is prevented, dropping of water from outlet opening of the safety valve can occur. The dropping water may be let to the outlet over an intercepting accessory which is placed under the safety valve. In order to do this you should first unscrew the protective cover off the water heater. In case the existing plumbing does not enable you to pipe the dripping water from the return 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.

You should ensure that the return safety valve is functioning properly by checking it on a regular basis i.e. every 14 days. To check the valve, you should open the outlet of the return 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.

Between the water heater and safety valve no closing valve may be built-in because it would disable the operation of non-return safety valve.

The water heater may be connected to the water supply in the house without reduction valve if the pressure in the network is lower than 0.5 MPa. If the pressure in the network surpasses 1.0 MPa, two reduction valves must be built-in, one after another.

Prior to the electric connection, the water heater must mandatorily be filled with water. By first filling the tap for the hot water upon 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.

graph TD
    subgraph Closed_circuit (pressure)
        A["1"] --> B["2"]
        B --> C["3"]
        C --> D["4"]
        D --> E["5"]
        F["T"] --> G["7"]
        H["2"] --> I["3"]
        J["6"] --> K["4"]
        L["H"] --> M["H"]
    end
    subgraph Open_circuit (gravity)
        N["3"] --> O["5"]
        P["T"] --> Q["H"]
        R["H"] --> S["H"]
    end
    style Closed_circuit (pressure) fill:#f9f,stroke:#333
    style Open_circuit (gravity) fill:#bbf,stroke:#333

Key:

1 - Safety valve
2 - Test valve
3 - Non-return valve
4 - Pressure-reducing valve
5 - Stop valve
6 - Testing piece
7 - Funnel outlet to the drain
H - Cold water
T - Hot water

graph TD
    A["Return pipe"] --> B["Process Unit"]
    B --> C["Energy source"]
    C --> D["Control Valve"]
    D --> E["Return Pipe"]
    style B fill:#f9f,stroke:#333
    style C fill:#ccf,stroke:#333
    style D fill:#cfc,stroke:#333
    style E fill:#fcc,stroke:#333

Combined GBK water heater operates in the same manner as the electrical GB water heater however, it has also been fitted with the cooling water heat exchanger allowing the sanitary water to be heated by alternative sources of energy (e.g. central heating, solar collector or heat pump). The two heating systems - electrical heating element and heat exchanger - can operate singly or concurrently. While the combined water heater is connected to the water supply system in the same manner as the GB model, the connection to the additional energy source has to be made as well. The inlet of the heating medium into the cooling water heat exchanger is colour-coded blue, while the outlet is colour-coded red. GBK water heaters can also be connected to the return hot water pipe. The return hot water pipe makes hot water instantly available at all points of use simultaneously. The return pipe can be connected to the inlet point at the top of the water heater after removing the plastic cap and unscrewing the stopper. The return pipe elements can also be purchased at any authorised dealer of our products at a later stage.

POWER CONNECTION

The power lead must be fitted to the water heater prior to connecting the heater to the power supply. In order to do this the plastic protective cover must be taken off by removing the plate inserted into the front side of the cover. The plate can be released by carefully inserting a flat screwdriver into the fissure between the plate and the protective cap, first next to the thermostat knob and then into the fissure opposite the knob. Once loose, the plate can subsequently be removed by hand. In order to remove the plastic protective cover, the thermostat knob must also be removed and both fixing screws undone. The protective cover can be re-fitted following the same procedure in reverse. The water heater must be connected to the power supply in accordance with the requirements set out in the relevant standards applying to the electrical installations. For safety reasons, a switch should be installed on the lead connecting the heater to the power grid, i.e. a switch disconnecting both power supply poles with the minimum of 3 mm distance between the open contacts.

Key:

1 - Thermostat
2 - Bimetal fuse
3 - Heating element (2 x 1000 W)

4 - Light indicator

5 - Connector

L - Phase conductor N - Neutral conductor 1- - Earth conductor

WARNING: The appliance must be disconnected from the power supply prior to doing anything that requires you to open the body of the water heater!

After the connection to water and electric network the heater is ready for use.

By turning the knob of thermostat at the front side of the protecting cover, the wished temperature of water between 25^ C and 75^ C is chosen. We recommend the adjustment of the knob to the position “E”. Such an adjustment is the most economic; with it the temperature of water shall be about 55^ C, the excretion of lime-stone and thermal loss shall be smaller as by adjustment to higher temperature.

The operation of electric immersion heaters is shown by pilot light. On the perimeter of the water heater there is a built-in thermometer which is showing the temperature of water. When the heater shall not be used during a longer time, its contents must be protected against freezing so that the power supply (electricity) shall not be switched off, but the thermostat knob shall be adjusted to the position “*”. With this adjustment the heater shall maintain the water temperature by about 10°C. But when the heater is switched-off from the electric network, at risk for freezing, the water must be emptied from it.

Before draining water heater should be disconnected from main supply. Than hot water valves on taps should be opened. Water heater is to be drained through inlet connection. For this purpose it is recommendable to put special fitting or a drain valve between inlet connection of water heater and safety valve. If this is not the case water can be drained directly through safety valve by putting the lever or screw cap of safety valve to "Test" position. After draining through inlet pipe there is small quantity of residual water which is to be drained by taking off of heating flange."

The outside of the water heater is cleaned by a mild solution of detergent, The solvents or rough cleaning means should not be used.

By regular service check of impeccable operation must be assured and a long lifetime of the water heater. The first check must be performed by an authorised service workshop after about two years after the first connection. At check, the use of anti-corrosion protecting anode is checked and if necessary lime stone must be cleaned which with regard to the quality, quantity and temperature of the water used is gathered in the inside of the water heater. Service workshop shall after check recommend also the date of next check of the water heater with regard to the established results.

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

Štovani kupče! Zahvaljujemo Vam na povjerenju što ste nam ga iskazali kupnjom našeg proizvoda. MOLIMO VAS DA PRIJE MONTAŽE I PRVE UPORABE POMNO PROČITATE UPUTE ZA MONTAŽU, UPORABU I ODRŽAVANJE ELEKTRIČNE GRIJALICE VODE.

UREĐAJ NIJE NAMIJENJEN NA KORIŠTENJE ZA OSOBE (UKLJUČUJUĆI I DJECU), SA SMANJENIM FIZIČKIM, PSIHIČKIM ILI SENZORNIM SPOSOBNOSTIMA ILI NEDOSTATAK ISKUŠENJA OZ. SAZNANJA, OSIM AKO SE NADZIRE ILI SU OBRAZOVANI U POGLEDU KORIŠTENJA, OD OSOBE KOJA JE ODGOVORNA ZA NJIHOVU SIGURNOST.

DJECA TREBAJU BITI POD NADZOROM, KAKO BI SE OSIGURALO, DA SE ONI NE IGRAJU S UREĐAJEM.