Gorenje OTG 50 SM Bedienungsanleitung

OTG 50-120 SM

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 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 INSTRUCTIONS CONCERNING THE USE OF THE APPLIANCE BY

A PERSON RESPONSIBLE FOR THEIR SAFETY.

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

THE APPLIANCE.

In accordance with the latest guidelines, we have developed for our more demanding

customers the electric water heater OTG equipped with an intelligent electronic regulator

allowing the setting of the temperature of water in the heater as well as smart "ECOS"

mode of operation. The heater records your habits and after a while, it calculates the

optimal operating mode that enables minimal use of electric energy necessary to meet

your warm water needs.

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 OTG 50 SM

OTG 80 SM

OTG 100 SM

OTG 120 SM

Volume [l]

50 80 100 120

Rated pressure [MPa (bar)]

0,6 (6) / 0,9 (9)

Weight / Filled with water [kg]

24/74 31/111 36/136 41/161

Anti-corrosion of tank enamelled & Mg Anode

Power of electrical heater [W]

2000

Connection voltage [V~]

230

Protection class I

Degree of protection IP24

Duration of heating to 75 °C

[h]

Quantity of mixed water at 40 °C [l]

94 148 194 226

Energy consumption

[kWh/24h]

0,99 1,26 1,71 1,81

1) Time for heating the whole content of heater if the initial temperature of cold water from water

supply is 15 °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

OTG 50 SM 690 470 250

210

OTG 80 SM 950 735 245

360

OTG 100 SM 1125

900 255

360

OTG 120 SM 1300

900 430

510

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.

445

100

350

420

100

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.

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.

When the heater is connected to the power supply, both lights on the

front panel will light up for 2 seconds.

Legend:

1 - Connection terminal

2 - Electronic regulator and

bipolar thermal cut-out

3 - Electric heating element

L - Live conductor

N - Neutral conductor

- Earthing conductor Electric installation

1 7 53546328

230 V~

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

from the power supply network!

OPERATION AND MAINTENANCE

After connecting to the water and power supply, the heater is ready for use.

The heater is equipped with an electronic regulator that enables the setting of the

temperature of water, adjustment of the heater’s operation to your habits ("ECOS"

programme) and troubleshooting application.

OPERATION

The water heater is operated by turning the regulation knob to the desired level.

Switching on/off the heater

• To switch on the heater, turn the knob in the clockwise direction to reach the desired

temperature level.

• To switch off the heater, turn the knob to the "0" position (if the heater is disconnected

from the power supply, water must be drained from it in case of danger of freezing).

Temperature setting

• The desired temperature level is set by turning the knob in the clockwise direction.

ECOS - Temperature depends on the recorded needs of the user.

- Protection against freezing, temperature around 10 °C.

- Water temperature around 35 °C.

ECO - Water temperature around 55 °C.

- Water temperature around 75 °C.

The operation of the heater in the "ECOS" mode

This mode of operation is suitable if your hot water consumption habits are relatively

consistent (example: taking a shower at approximately the same time of the day). Your

habits are recorded and then taken into account when heating the water. The operation of

the heater in the "ECOS" mode reduces the consumption of electric energy.

• The "ECOS" mode of operation can be switched on by twisting the control knob counter

clockwise. The green and red light start simultaneously. The red light symbolises the

functioning of the heater and the green light symbolises the “ECOS” mode.

• The "ECOS" function is based on a 7-day cycle. During the first week of operation, the

water temperature in the heater is maintained at 75 °C and the programme records the

consumption pattern for seven consecutive days. After that, the recorded pattern starts to

be used automatically and the heater prepares the hot water based on the

measurements from the previous week. At the same time, the heater continues to record

the consumption. If the pattern differs from the previous week in terms of time or volume,

the newly recorded pattern is used the following week.

• The water temperature in the "ECOS" mode is kept between 40 °C and 75 °C. When no

consumption is anticipated (standby temperature), the water is maintained at 40 °C.

• If, during recording, there was a power failure or the heater was switched off, the

recording is not valid.

• The "ECOS" mode can be turned off by twisting the control knob to any other position.

Anti-legionella function

The function is factory set. After connecting to the power supply or after eliminating an

error, the anti-legionella function is switched on after 3 days.

When the heater is switched on and the temperature of the water in the heater is above 62

°C continuously for 15 minutes, the countdown is finished. As soon as the temperature falls

below 62 °C, a 30-day countdown begins again. If within 30 days the heater does not reach

62 °C, the anti-legionella function is switched on and the heater heats the water to the

temperature of 62 °C for 15 minutes.

If the heater is not switched on or connected to the power supply and the 30-day period

expires, the anti-legionella function does not switch on until the heater is turned on.

If the anti-legionella function is in operation and the user switches off the heater, the

function is interrupted and a new 30-day countdown begins.

If the user lowers the set temperature during the operation of the anti-legionella functions,

the function is interrupted and a new 30-day countdown begins.

Error indication

In case of an error or warning on the heater, red and green light start blinking to indicate an

error according to the table below.

STATUS

RED light

GREEN light

Normal operation

Heater switched off

/ /

Heater switched on, no error, heater not

operating

/ /

Heater switched on, no error, heater

operating

GLOWING /

Operation in ECOS mode

Heater switched on, no error, heater not

operating

/ GLOWING

Heater switched on, no error, heater

operating

GLOWING GLOWING

ERRORS (Call the service)

Heater switched on, temp. sensor error

(sensor 1 or sensor 2 in short circuit or open

circuit, temp. difference error)

BLINKING BLINKING

Heater switched on, heater warning

BLINKING

When the water heater is not in use for a longer period of time and is switched off or

disconnected from the power supply, it must be emptied in case of danger of freezing.

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 two 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.

09/2012

407152

Gorenje

Dieses Handbuch passt für folgende Modelle

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