Gorenje GBF 50 - User Manual

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document is a user manual for the Gorenje GBFU 50-150E/V6 electric water heater, providing instructions for installation, operation, and maintenance in multiple languages, including English.

Function Description

The Gorenje GBFU 50-150E/V6 is an electric water heater designed to provide hot water for domestic use. It can be connected to the water supply in two ways: a closed-circuit pressure system, which allows for several points of use, or an open-circuit gravity system, which supports only a single point of use. The water heater features an electronic thermostat for temperature regulation and a protective anti-corrosion magnesium anode to ensure durability. It is equipped with heating elements that warm the water within the tank. The device is designed for either vertical or horizontal wall mounting, with specific requirements for pipe orientation in the horizontal configuration.

Important Technical Specifications

The GBFU series water heaters come in various capacities, ranging from 50 to 150 liters, with corresponding dimensions and weights. All models share several core technical specifications:

Rated Pressure: 0.6 MPa
Anti-corrosion Protection: Enamelled tank with a magnesium anode
Connected Power: 2000 W
Number and Power of Heating Elements: 2 x 1000 W
Voltage: 230 V~
Protection Class: I
Degree of Protection: IP 25

Specific models have different capacities, weights, and heating times:

Model	Volume [l]	Weight / Filled with water [kg]	Heating time to 75 °C [h]	Quantity of mixed at 40°C [l]	Energy consumption [kWh/24h]
GBFU 50 E/V6	50	24/74	1:55	96/80	1.32/1.45
GBFU 80 E/V6	80	30/110	3:05	151/130	1.85/2.10
GBFU 100 E/V6	100	34/134	3:55	199/174	2.20/2.45
GBFU 120 E/V6	120	38/158	4:35	238/210	2.60/2.90
GBFU 150 E/V6	150	44/194	5:45	296/260	3.20/3.60

The heating time is calculated for the entire volume of the heater with an electric immersion heater, assuming a cold water supply temperature of 15°C. Energy consumption is measured to maintain a stable water temperature of 65°C at an ambient temperature of 20°C, in accordance with EN 60379.

Usage Features

The water heater is ready for use after being connected to the water and power supply. Users can set the desired water temperature between 10°C and 75°C by turning a rotating knob on the control panel.

Control Panel Settings:

O: Appliance switched off.
*: Protection against freezing, temperature regulation set to 10°C. This mode is recommended if the appliance will not be used for a long period but remains connected to power, preventing water from freezing.
|: Setting and regulation of temperature to 35°C.
e: Optimum setting, temperature regulation set to 55°C. This is the recommended economic mode, as it minimizes heat loss and lime deposits compared to higher temperature settings.
|||: Maximum setting, temperature regulation set to 75°C.

Signal Lamp Indications: The signal lamp on the control panel provides feedback on the heating element's status and the anti-corrosion magnesium anode's condition:

Green: Heating element switched on, Mg anode active.
Orange: Heating element switched on, Mg anode not active (Mg anode requires replacement).
Red: Heating element switched off, Mg anode not active (Mg anode requires replacement).
Lamp off: Heating element switched off, Mg anode active.
Red - flashing: Heating element not operating, sensor disconnected.

A bimetal thermometer on the housing indicates the water temperature, with its pointer rotating clockwise as water heats up.

Freezing Protection: To protect against freezing, the water heater should be set to the '*' position (10°C) without disconnecting power. If power is disconnected, the water heater must be thoroughly drained before freezing conditions begin.

Discharging Water: Water can be discharged via the inlet pipe, ideally through a special T-fitting or discharge tap installed between the relief valve and the heater inlet pipe. Alternatively, it can be discharged directly through the relief valve by rotating its handle or cap to the "check operation" position. Before draining, the heater must be disconnected from the power supply, and the hot water tap on the mixer tap should be opened. After draining through the inlet pipe, any remaining water can be discharged by removing the heating flange.

Maintenance Features

Regular maintenance is crucial for the water heater's faultless performance and long lifespan.

External Cleaning: The external parts can be cleaned with a mild detergent solution. Solvents and abrasives should not be used.
Preventive Inspections: The first inspection should be carried out by an authorized service provider approximately two years after installation. This inspection involves:
- Checking the wear of the protective anti-corrosion anode.
- Removing lime coating and sediment from the tank walls and heating element. The frequency of this depends on water quality, quantity, and temperature.
- The service provider will issue a condition report and recommend the date for the next inspection.
Anode Replacement: The magnesium anode needs replacement if its diameter has significantly reduced or if it is entirely consumed down to the steel core. Regular anode checks are necessary to maintain warranty coverage.
Relief Valve Inspection: Users should periodically inspect the relief valve by opening its outlet (turning the handle or unscrewing the nut, depending on the valve type). The valve is functioning correctly if water flows out of the nozzle when the outlet is open.
Repairs: Users should never attempt to repair the water heater themselves. All repairs must be carried out by an authorized service provider.